DOSEN PROFIL LENGKAP

for silicification. Some examples are silicified limestones of Miocene Astoria Formation in Washington, silicified ignimbrite in El Tatio Geyser Field in...

such as holes bored by crustaceans or molluscs, and that this becomes silicified. This hypothesis would explain the complex shapes of flint nodules that...

or thunder eggs. Agates also form in veins within any rock type and in silicified fossils. The processes that result in agate banding are not well understood;...

evidence that silica is deposited directly as quartz. Wood can become silicified within hundreds of years in silica-rich hot springs. While wood petrified...

Probable cyanobacteria in the vertical section of a silicified biofilm from the Lower Cretaceous. Very shallow hypersaline environment of the Urgonian...

to several hundred feet in diameter. Breccia pipes may or may not be silicified. They usually consist of fragments of the host rock (the rock layer they...

Sarsen stones are silicified sandstone blocks found extensively across southern England on the Salisbury Plain and the Marlborough Downs in Wiltshire;...

Stonehenge megaliths include smaller bluestones and larger sarsens (a term for silicified sandstone boulders found in the chalk downs of southern England). The...

discovery in Xinjiang in China of early Late Devonian (Frasnian, ca. 374 Ma) silicified fossil cladoxylopsid tree trunks (diameter up to c.70 cm) with preserved...

Stromatolites – laminated microbialites (Precambrian silicified stromatolite, Strelley Pool Chert, (Pilbara Craton), W. Australia)...

calcareous called the Hochfelln Beds, which has a substantial amount of silicified Early Jurassic gastropod fauna -- among the most diverse such assemblages...

Image Fossil Jefferson's ground sloth (Megalonyx jeffersonii) 2008 Gem Silicified Mississippian Lithostrotionella coral 1990 Rock Bituminous coal 2009 Soil...

in Devon, and R. Etheridge in Australia. A study of the taphonomy of silicified fossils (especially brachiopods) in Devon concluded beekite resulted from...

065.0101. Schwarzhans, Werner W.; Jagt, John W. M. (1 November 2021). "Silicified otoliths from the Maastrichtian type area (Netherlands, Belgium) document...

these circular structures was found. Finally, field observations found silicified sandstone dikes and igneous rocks, such as syenite, porphyries, tephrites...

Araucaria. A. mirabilis are known from large amounts of very well preserved silicified wood and cones from the Cerro Cuadrado Petrified Forest, including tree...

official state rock is bituminous coal, and the official state gemstone is silicified Mississippian fossil Lithostrotionella coral. The limestone also produced...

California Orbicular "ocean jasper" (not, strictly, a jasper, but a highly silicified rhyolite or tuff) Analalava District Madagascar, polished slab Orbicular...

often deposited around larger fossils such as Echinoidea which may be silicified (i.e. replaced molecule by molecule by flint). Chalk is so common in Cretaceous...

Silica pseudomorph after gypsum crystals and silicified serpulid polychaete tubes...

Comus fm. mud/shale with highly contorted bedding (post-depositional, soft-sediment deformation). The rock has been decalcified and weakly silicified....

Retrieved Feb 15, 2012. Sigleo, Anne (1978). "Organic geochemistry of silicified wood, Petrified Forest National Park, Arizona". Geochimica et Cosmochimica...

Silicified Gryphaea sp. from the Lower Jurassic. Le Liquier, Aveyron, France. Max Rouger collection....

Adrain, Jonathan M.; Westrop, Stephen R. "A Late Cambrian (Sunwaptan) silicified trilobite fauna from Nevada". Bulletins of American paleontology. McNamara...

mineralised with calcium phosphate rather than calcium carbonate, although silicified examples hint that some species bore carbonate or carbonaceous sclerites...

material, in the form of compact nodules, is found in the fractured, silicified limestone of Yunxian and Zhushan, Hubei province. Additionally, Marco...

Silicified and mineralized breccia. Light gray is mostly dolomite with a little translucent quartz. Dark gray is jasperoid and ore minerals. Veinlet along...

include ferruginised mudstone and siltstone, iron-stained sandstone lenses, silicified shale, and ironstone concretions formed through groundwater alteration...

tricornutum can grow in the absence of silicon and can survive without making silicified frustules. This provides opportunities for experimental exploration of...

Woodworth described it as follows: Coarse sandstones, often feldspathic, with silicified trunks of Araucarioxylon; well developed north, south, and west of Otterdale...

ISSN 0195-6671. Schwarzhans, Werner W.; Jagt, John W. M. (2021-11-01). "Silicified otoliths from the Maastrichtian type area (Netherlands, Belgium) document...

and Equisetum laterale from the Early to Middle Jurassic of Australia. Silicified remains of Equisetum thermale from the Late Jurassic of Argentina exhibit...

approaching 6, similar to turquoise. Chrysocolla chalcedony is a heavily silicified form of chrysocolla that forms in quartz deposits and can be very hard...

process took place during favourable conditions. The fossilized plants are silicified remnants of a sub-tropical forest that existed on the northwest part of...

contains variably-colored orbs or spherical inclusions or zones. In highly silicified rhyolite or tuff, quartz and feldspar crystallize in radial aggregates...

Calcareous fossils are occasionally present that have been completely silicified. Where chert occurs in chalk or marl, it is usually called flint. Nodular...

At the Emma Fiord section Taxodiaceous conifers represented 79% of the silicified tree trunk specimens recovered with the other 21% being Pinaceous conifers...

years. Various exposures of Niobrara Chalk were covered and partially silicified as the Ogallala sediments covered the Neogene plains. Re-exposed during...

this model, instead of normal subduction of oceanic plates, extensively silicified upper oceanic crust delaminated from lower oceanic crust and was deposited...

Boundary Zone: The Upper Rock Zone, 9 to 26 meters thick, consists of highly silicified, pebbly medium- to coarse-grained sandstones, forming rocky slopes in...

with silica (silicified) at its tip. In Urtica thunbergiana, individual hairs contain around 4 nanolitres (4×10−6 ml) of fluid. The silicified tip breaks...

Patagonia and Equisetum laterale from the Early-Middle Jurassic of Australia. Silicified remains of Equisetum thermale from the Late Jurassic of Argentina exhibit...

preserved uncompacted in three dimensions. The fossils are phosphatized and silicified, thus the delicate chitinous cuticle and soft parts are not affected by...

to the fresh lime plaster using a fresco technique, whereby the colours silicify with the plaster in a chemical reaction and the paintings are thus able...

(January 2020). "On the biogenicity of Fe-oxyhydroxide filaments in silicified low-temperature hydrothermal deposits: Implications for the identification...

S2CID 233820331. Liljedahl, Louis (January 1985). "Ecological aspects of a silicified bivalve fauna from the Silurian of Gotland". Lethaia. 18 (1): 53–66. Bibcode:1985Letha...

which have been heavily eroded by the tributaries of the Murg, is the silicified main conglomerate (Middle Bunter). To the east and north are the nappes...

through a 4.7 mi (7.6 km) long out-and-back hiking trail. During the 1900s, silicified alaskite aplite was mined for use in porcelain wares production. The name...

rare and restricted to these nodules, though they include a variety of silicified ammonoids, conodonts, bivalves, and gastropods. Some index fossils have...

ganisters, geologists have concluded that the typical ganister is the silicified surface horizon, i.e. E horizon, of a buried soil, called “paleosol”,...

1759-6831.2009.00001.x. Manchester, S.R.; McIntosh, W.C. (2007). "Late Eocene silicified fruits and seeds from the John Day Formation near Post, Oregon". PaleoBios...

fossils of pre-historic animals; the Lyle and Lela Jacklin Collection of Silicified Wood & Minerals; and S. Elroy McCaw Fluorescent Mineral Display. Research...

western side of the Bay, in the Southern Pacific Colliery). The trees, now silicified and still upstanding, are believed to have been buried in volcanic ash...

tents and hunted seals, seabirds and other marine animals. They used silicified slate, agate, quartzite and rock crystal as materials for their tools...

Silicified cell wall of an Amphora species consisting of two valves or overlapping halves...

It consists of mixture of cross-bedded sandstones, massive sandstone, silicified mudstone, and volcaniclastic conglomerate, and breccia. The volcaniclastic...

Gill, B. C. (2026). "Taphonomy and paleoenvironmental significance of silicified cyanobacterial fossils in the early Cambrian Harkless Formation, Nevada...

the organism was likely to have lived in. Most fossils that have been silicified are bacteria, algae, and other plant life. Silicification is the most...

of shell structures, some of which incorporate substantial organic or silicified components. "Discinida". Archived from the original on 2013-03-06. Retrieved...

collected during a set of surveys by Killian Driscoll, and 95% were formed on silicified dolomite, which outcrops locally. The remaining 5% were formed from flint...

sub-tropical and tropical climate for long enough time can end up being silicified, becoming hard and extremely difficult to erode. Erosion of peneplains...

scale bar represent 1 μm. The silicified Tetraparma pelagica The silicified Triparma laevis f. inornata The silicified Pentalamina corona The flagellated...

(January 2020). "On the biogenicity of Fe-oxyhydroxide filaments in silicified low-temperature hydrothermal deposits: Implications for the identification...

the pedicle of Nisusia emerged from between its valves, as displayed by silicified material of N. sulcata, though it still has an opening at the apex of...

PMID 16856849. Lin Dong; Shuhai Xiao; Bing Shen; et al. (January 1, 2008). "Silicified Horodyskia and Palaeopascichnus from upper Ediacaran cherts in South China:...

Teufelsmauer. They include, inter alia, rocks of Heidelberg Sandstone, a silicified quartz sandstone. Springs rise along the entire fault system, both those...

mine was developed by an inclined shaft at least 110 feet deep into a silicified replacement body in Jefferson Dolomite. The mine was worked from 1933...

low degree of silicification; however, their rims and ribs are highly silicified. This probably enables them to have high strength while being light and...

with late Cretaceous titanosaurids from India has revealed phytoliths, silicified plant fragments, that offer clues to a broad, unselective plant diet....

sediments and contains the only documented Miocene exposures in the state. A silicified conifer stump weighing several tons was unearthed near Wittsburg, and...

quality rocks (such as volcanic, magmatic and sedimentary stones as well as silicified tuff) were used. The precise technique used differed from stone to stone...

diagenetic cherty nodules, and stromatolitic limestone and is intensively silicified. The hydrothermal alteration, which created this breccia, has been dated...

Xiao; Liu, Ziwei; Zhang, Song; Gong, Meng; Bai, Lin (April 2024). "A new silicified microfossil assemblage from the Ediacaran Dengying Formation in South...

(C) Silicified roots and stumps of woody shrubs are only found in thick braided channel sandstone deposits. The plants responsible for the silicified fossils...

conditions. The intra-volcanic rocks comprise silicified mudstone interfingered with diatomites. The term ‘silicified’ points to the fact that the calcium atoms...

3374/014.065.0101. Schwarzhans, Werner W.; Jagt, John W. M. (2021-11-01). "Silicified otoliths from the Maastrichtian type area (Netherlands, Belgium) document...

ISSN 2039-4942. Schwarzhans, Werner W.; Jagt, John W. M. (2021-11-01). "Silicified otoliths from the Maastrichtian type area (Netherlands, Belgium) document...

credible fossil of the genus is Pandanus estellae, which is known from a silicified fruit found in Queensland, Australia, dating to the Oligocene epoch around...

locally conglomeratic, that contains entire trunks and fragments of silicified wood (Dadoxilon benderi) conifer 3) Rift phase - Berriasian to Hauterivian...

growth slows. When silica becomes scarce, Synura cells produce weakly silicified scales and may ultimately fail to produce scales. In contrast to diatoms—whose...

The lowest layer is upper cherty stromatolites that has been partially silicified and dolomitized. Paul Knauth, a geologist at Arizona State University...

Holotype of silicified Ganarake scalaris, naturally weathered from dolostone...

material was silicrete, whereas the lower assemblage was dominated by silicified tuff and it included rare dentate tools. Analysis of the artefacts and...

buhrstone), an open-textured, porous but tough, fine-grained sandstone, or a silicified, fossiliferous limestone. In some sandstones, the cement is calcareous...

outcrops of the Morrison Formation (Jurassic). Mineralization occurs in silicified (chalcedony and quartz) veins cutting the Morrison Formation and the subjacent...

sedimentary deposit and identifiable as the genus Elimia, and are less-silicified than those in Texas and California. Burch, J. B. (1989). North American...

lacustrine deposits, interbedded in the basalt formations, contain a range of silicified mollusc fossils. In the Antalo Limestone: large Paracenoceratidae cephalopods...

metric tons (36 long tons). For comparison, the sarsen (also a kind of silicified sandstone that resulted from Cenozoic acid leaching) stones of Stonehenge...

associated (and somewhat contemporaneous) with quartz and cinnabar, in a silicified matrix. Crystals are up to 10 × 1 × 1 mm. Carbon isotope ratios and the...

cell was colorless and non-motile. Ehrenberg subsequently diagrammed the silicified skeletal elements (pentasters) from geological deposits in various parts...

Limestone of Utah, tell a different story. Each fossil includes a distinctive silicified tube within the large posterior opening. This tube has long been interpreted...

and limited original shell material. Vertebrate fossils Shark's teeth Silicified corals and wood The Bone Valley Member (originally the Bone Valley Formation)...

thickness of 5.82 metres (19.1 ft) and is made up of nine greyish to white silicified claystone beds which range in thickness from 3–20 centimetres (1.2–7.9 in)...

JSTOR 3514834. Falcon-Lang, Howard J. (2003). "Growth interruptions in silicified conifer woods from the Upper Cretaceous Two Medicine Formation, Montana...

Melanie L.; Nowak, Michael D. (2011). "Palynoflora of the late Paleocene silicified shale at Almont, North Dakota, USA". Palynology. 35 (2): 179–211. Bibcode:2011Paly...

same age. The Gegensteine near Ballenstedt has been weathered from a silicified sandstone stratum of the Emscher epoch. The steeply inclined bands of...

Recherches sur les végétaux silicifiés d'Autun, 1876 – Research on the silicified flora of Autun. Végétaux silicifiés d'Autun et de Saint-Etienne. Nouvelles...

volcanic tuff, silicified tuff, cherts, quartz aggregates, opals or chalcedonies, and rocks of effusive origin. Tuffs and silicified tuffs were used...

The Figueroa Sulfide consists of a 1.5-meter-thick sulfide lens with a silicified core, flanked by more friable sulfides, and is structurally overlain by...

highest free falling waterfalls in Germany. Its rock shelf is made of hard, silicified sandstones of the Upper Rotliegendes (Permian), which lie over less weather-resistant...

brachiopod. Nisusias pedicle emerged from between its valves, as displayed by silicified material of N. sulcata, though it still has an opening at the apex of...

ISSN 0195-6671. Schwarzhans, Werner W.; Jagt, John W. M. (2021-11-01). "Silicified otoliths from the Maastrichtian type area (Netherlands, Belgium) document...

(creating the visible "nodule"), while in var. enodulifer it is more evenly silicified. The species Attheya ussuriensis is somewhat similar in morphology. Attheya...

average size between 10-61 μm along the apical axis. The cell wall is silicified, as is characteristic of all diatoms. The thickness of this cell wall...

around the globe, including lacustrine and offshore deposits of Brazil, silicified shales of the Eocene in Gabon, the Kimmeridge Clay Formation in the North...

rocks, including granite, dolerite, basalt and sedimentary rocks such as silicified sandstone. It occurs as the result of the chemical alteration of such...

counterparts. Atlantic DSi depleted waters tends to produce relatively less silicified organisms, which has a strong influence on the preservation of their frustules...

locations such as Ouray, Colorado, US; San Juanito, Chihuahua, Mexico, in a silicified zone among the rhyolite area; and in St. George, Utah, US, where the mineral...

concluded that this may be an illusion created by taphonomic bias in silicified fossil assemblages, with the transition beginning only in the aftermath...

structural elements in schwagerinids (superfamily Fusulinoidea) exemplified by silicified material from the Upper Carboniferous of the Carnic Alps (Austria/Italy):...

Philippe et al. (2026) report the discovery of termine coprolites in a silicified driftwood piece from the Albian strata from the Valdrôme site (France)...

detrital alluvial plains: an eocene peneplain. an aquitanian, strongly silicified peneplain. This is very well developed in the Périgord, in the Agenais...

unicellular algae that may be naked and flagellated, or spherical and silicified, covered in silica "shields". Chrysoparadoxophyceae – One enigmatic species...

2017). "Unique growth strategy in the Earth's first trees revealed in silicified fossil trunks from China". Proceedings of the National Academy of Sciences...

coalified and only partially silicified, with the largest stem reaching a diameter of nearly 50 cm. In Suture Bench, silicified tree trunks are found buried...

south and eastern end. The area is composed of a well defined ridge of silicified brown sandstone overlaying the basement rock. The ridge is made up of...

Journal of Paleontology 82 5, 884-905 Pour M. G., Popov L. E. (2009) Silicified Middle Cambrian trilobites from Kyrgyzstan, Palaeontology, 1039-1056 v...

Adelaide, South Australia and 890 km northwest of Sydney, Australia. Silicified trilobites fossils from the early middle Cambrian have been found at Gnalta...

Potamogeton-like Indeterminate Ulaan Bulag "Shoots, leaves, and fruits." Pondweed. Silicified Wood Indeterminate Altan Uul II, Nemegt "Petrified wood and trunks." Indeterminate...

on marine choanoflagellates II. Fine structural observations on some silicified choanoflagellates from the Isefjord (Denmark), including the description...

traceable, though they may be more or less completely recrystallized or silicified. In the center of a spherulite there may be a crystal (e.g. quartz or...

Geografiya 3(33):95-96 Whittington, H. B.; I.I. Evitt, W.R. (1953). "Silicified Middled Ordovician trilobites". Geological Society of America Memoirs...

single valves, all silicified" Palaeoneilo P. n. sp. Lowther Island "One complete articulated specimen and 15 isolated valves, all silicified". Paracyclas P...

to 10 feet (3.0 m). The composition of quarts varied with 60 percent silicified amphibolite to 100 % of quartzite. The veins were also filled with gauges...

Turritella shells is often referred to as "Turritella limestone", or, if silicified, "Turritella agate". Both varieties of this stone are commonly sold as...

the cartouche of Tausret was found at Tell Deir Alla in Jordan and a silicified sandstone statue found at Heliopolis represents Tausret whose names are...

South Wales caymanite is from Jenolan Caves. None of the NSW material is silicified or in any way suitable for use as a semi-precious stone. The formation...

unnamed basal marine sandstone, the Neuburg Kieselerde Member, and an upper silicified conglomerate (Homsand facies). Geographically, this formation is located...

Ryerson Ltd. ISBN 9780070887398. OCLC 46769716. Miller, C. N. Jr. (1973). "Silicified cones and vegetative remains of Pinus from the Eocene of British Columbia"...

S2CID 128491821. Dong, L.; Xiao, S.; Shen, B. & Zhou, C. (Jan 2008). "Silicified Horodyskia and Palaeopascichnus from upper Ediacaran cherts in South China:...

heterokonts. The non-motile forms do not possess flagella but instead have a silicified cell wall with a distinctive plate morphology: three shield plates, three...

Ireland Environment Agency. Retrieved 3 May 2009. Brunton, C.H.C. (1968). "Silicified Brachiopods from the Visean of County Fermanagh (II)". Bulletin of the...

PMC 6368556. Tiwari, Meera; Pant, Charu C. (January 2004). "Neoproterozoic silicified microfossils in Infra Krol Formation, Lesser Himalaya, India". Himalayan...

[citation needed] In the meantime the best available scientific collection of silicified wood from the fossil forest (itself listed as local heritage) passed to...

1989 15.047 Stone Agatized coral Agatized coral, which is a form of silicified coral similar to petrified wood, is found in Florida near Tampa Bay and...

include ferruginised mudstone and siltstone, iron-stained sandstone lenses, silicified shale, and ironstone concretions formed through groundwater alteration...

Biodiversity Institute. Retrieved 27 February 2022. Miller, C. (1975). "Silicified Cones and Vegetative Remains of Pinus from the Eocene of British Columbia"...

found in the Yangtze Gorges region of South China generally preserve silicified or dolomitized, leading to the interpretation that the tubes may have...

rose quartz, amethyst, and citrine. Decorative stones found are marble, silicified wood, and jasper. Ambatovy mine (nickel and cobalt) Ankaizina mine (bauxite)...

A large number of the finer quartz-porphyries are also in some degree silicified of impregnated by quartz, chalcedony and opal, derived from the silica...

well-bedded banded green cherts, silicified siltstones, and argillites. A majority of the chert beds contain the silicified siltstones, and range in thickness...

Avalon Peninsula, was preserved by solidified volcanic ash. Within the silicified mudstone-volcanic ash, we can see the soft-bodied organisms being well...

Of more significance is an outcrop of Triassic peat, permineralized (silicified) into chert, that occurs on Fremouw Peak. This unique chert deposit contains...

best developed in relatively fine-grained, uniform, and siliceous or silicified sandstones. The most well known example of a tessellated pavement is the...

2631. Hybertsen, F.; Kiel, S. (2018). "A middle Eocene seep deposit with silicified fauna from the Humptulips Formation in western Washington State, USA"...

heterokonts. The non-motile forms do not possess flagella but instead have a silicified cell wall with a distinctive plate morphology: three shield plates, three...

the family Glassiidae. Shi et al. (2025) report the first discovery of silicified brachiopod fossils from the Permian (Kungurian−Roadian) strata of the...

Wikidata Q136396722. Darragh, Thomas A.; Kendrick, George W. (2008). "Silicified Eocene molluscs from the Lower Murchison district, Southern Carnarvon...

Progress in Natural Science. 12 (9): 649–654. Lin, J.; et al. (2006). "Silicified egg clusters from a Middle Cambrian Burgess Shale–type deposit, Guizhou...

part of the foreland basin that leads to thrusting. An evidence of a silicified chert breccia strata existing just on top of the rigid precambrian basement...

composed from a fragment of a cuttlefish fossil (Orthoceras sp.) that was silicified during the Devonian or Carboniferous period. The fossil had to have been...

Edition, 1 (Introduction): 251-320. Ryberg, P.E., & Taylor, E.L., 2007. Silicified wood from the Permian and Triassic of Antarctica: Tree rings from polar...

abundance. The plant life known from this area included trees preserved as silicified wood, cycads like Dioonites, Ginkgo, the ground plant Selaginella and...

stage of the Miocene. The nuts were originally discovered as a single silicified, opalized mass of well over fifty nuts found in a petrified Platanus stump...

Formation Paleoflora of the Eocene Okanagan Highlands Miller, C.N. (1975). "Silicified cones and vegetative remains of Pinus from the Eocene of British Columbia"...

consists of mudstone, siltstone, and sandstone, and is named for the silicified wood or petrified logs found here. ('Shishugou' = 'stone tree valley')...

John; Kenrick, Paul (2014-10-23). "X-ray Synchrotron Microtomography of a silicified Jurassic Cheirolepidiaceae (Conifer) cone: histology and morphology of...

geological environment with remnants of reptiles like pterosaurus to silicified trunks and fossilized flowering plants. Seridó Rio Grande do Norte, Brazil...

yellowish, and reddish, but more commonly it is pinkish. Nearly always it is silicified and therefore compact and hard. The formation was deposited in an arid...

with thin seams of fine-grained sand and mica with some layers partially silicified. It preserves fossils dating back to the Paleogene period. Earth sciences...

commodities. Felsic metavolcanic rocks and mafic intrusive rocks are cut by silicified zones and veins. A zone of diorite with a maximum width of 0.75 m (2.5 ft)...

shale containing graptolites. It is generally leached, and frequently silicified. The colour of the beds alternates between grey and black, but where weathered...

walcotti in the Paleobiology Database Tripp, R. P; Evitt, W. R. (1986). "Silicified trilobites of the family Asaphidae from the Middle Ordovician of Virginia"...

characterized by ultramafic massive and pillow lavas, a trondhjemitic suite of silicified felsic intrusive and flow banded rocks, and sedimentary chert beds. Veins...

China during or before the late Miocene. Krejčíř et al. (2026) describe silicified oak wood (most closely resembling members of the genus Trigonobalanus)...

contain prominent rod-like structures within the regular grain of the silicified wood. Depending upon the angle at which they are cut by fracture, these...

species W. yakimaensis. The genus was first described from specimens of silicified rhizomes and frond bases in blocks of chert. The chert was recovered from...

associated with late Cretaceous titanosaurids has revealed phytoliths, silicified plant fragments, that offer clues to a broad, unselective plant diet....

revpalbo.2007.09.004. Mencl, Václav; Matysová, Petra; Sakala, Jakub (2009). "Silicified wood from the Czech part of the Intra Sudetic Basin (Late Pennsylvanian...

1999). "Rheological characterization of microcrystalline cellulose and silicified microcrystalline cellulose wet masses using a mixer torque rheometer"...

stone artifacts were found, some made from locally sourced materially (silicified sandstone, clear quartz and ironstone) and some from other materials sourced...

over millions of years, they can build up as much as half a mile deep. Silicified frustule of a pennate diatom with two overlapping halves Guinardia delicatula...

Sandstone but lacks coal beds. 100 feet (30 m), but highly variable. Silicified sandstone in this unit has been used to make flaked tools (Gerhardt et...

chatoyance: tiger's eye, hawk's eye, and cat's eye by lapidaries, and are silicified crocidolite. Wonderwerk Cave is located in the range near Kuruman and...

University of Birmingham, 2012. [1] Edgecombe, G. D. & Wright, A. J. (2004), "Silicified early devonian trilobites from Brogans Creek, New South Wales", Proceedings...

formation comprises red claystones and grey sandstones, medium-thick, well silicified, partly conglomeratic, whitish and reddish color thanks to the presence...

are moderately hard as well as sandy, silty, phosphatic and dolomitic. Silicified carbonates and opalized claystone have also been found. The Arcadia Formation...

erroneous interpretation of Cainozoic vertebrates as human skeletons, and silicified logs in fluvio-continental deposits as petrified ships (as Steno did)...

microalga with a range in size of 10 - 80 μm. It is encased in a heavily silicified cell wall, called the frustule, and is identified by its unique theca...

Anne-Laure; Harper, Carla J.; Serbet, Rudolph (2023-05-19). "Early Jurassic silicified woods from Carapace Nunatak, South Victoria Land, Antarctica". Fossil...

redistribution of stratigraphic layers. Different types of stones found include silicified limestone, quartz flakes, and coral limestone. Early investigations concluded...

petrified forests and petrified wood concentrations. The concentrations of silicified wood, upright standing, petrified tree trunks, and associated buried petrified...

dolomitic mudstone, and thin layers of dolomitic siltstone with chert and silicified fossils. The fauna is dominated by chonetid brachiopods, large tentaculitids...

Mohave County, Arizona, and the Lake Mead National Recreation Area, rare silicified corals, crinoid plates, gastropods, and massive stromatoporoid colonies...

ridge leading to the top of Sheehan Mesa, on the northeast side. Large silicified tree stumps in place of growth were found halfway up this ridge, hence...

brightwellii cell has a high length to diameter ratio. The cell wall is silicified, as is characteristic of all diatoms. This hard, porous covering is known...

their source is referred to as a Lagerstätten. In the laminated, and silicified, fine-grained lake deposits of Carapace Sandstone, fossil conchostracans...

limestone of the Triassic-Jurassic Paikon subzone (an old island arc). The silicified ophiolites of the Almopias subzone, bordering the Pelagonian zone to the...

Herendeen, Patrick S.; Clark, Elizabeth G.; Crane, Peter R. (2022-12-31). "Silicified cupulate seed-bearing structures from the Early Cretaceous of eastern...

is considered part of the Fifes Peak Formation. The flow consists of a silicified rhyolite tuff interbedded with the lavas from the Fifes Peak Formation...

1306/C1EA45C2-16C9-11D7-8645000102C1865D. Butts, Susan H. (January 2007). "Silicified Carboniferous (Chesterian) Brachiopoda of the Arco Hills Formation, Idaho"...

stems, brachiopods, and corals in the Chainman-Manning Canyon Shale. Silicified brachiopod and coral fossils mark the Redwall, Leadville, Madison, Gardison...

primarily composed of blue to grey weathering rhyolitic lava rock which are silicified in nature, with the lowest known sections of the member containing doleritic...

buried forest consisting of numerous in situ fossil tree stumps. These silicified stumps are up to 18 cm (7.1 in) and 20 cm (7.9 in) height and in growth...

Hergenrath layers were deposited, which formed in a swampy river delta. Silicified wood, charcoal, and numerous concretions of marcasite are embedded in...

concave landform formed by the weathering of granite intruding Precambrian silicified metasedimentary rocks. At many places, the granite-weathered topography...

outcrops of this subzone are associated in some places with sheets of silicified mudrock rich in volcanic ash. These ashfall events were likely detrimental...

14.8 ft (4.5 m) wide at its widest point. Its entrance, protected by a silicified limestone and conglomerate overhang, sits some 26 ft (8 m) above Blue...

are found in the east and west areas of Chesowanja. Besides diatoms and silicified wood, the phonolites consist of little fossils. The phonolites are believed...

Central Washington. The species was first described from specimens of silicified fruits preserved in chert of the "Yakima Canyon Flora". The chert was...

modern time. Typical materials known from this site are: Red and brown silicified sandstone or quartzite Some of the monuments known to come from this site...

evidence of trade includes Medicine Creek jasper from Nebraska, Alibates silicified dolomite from the Texas Panhandle, Olivella seashells from the Pacific...

1306/83D913D0-16C7-11D7-8645000102C1865D. Whittington, H.B. (1954). "Two silicified Carboniferous trilobites from west Texas" (PDF). Smithsonian Miscellaneous...

Silicified logs at the Queen's Laundry Bath House, 1969...

water table. Avulsion surfaces, histosols, carbonaceous fossil roots, and silicified wood all provide evidence of a low-lying forested landscape with poor...

Dong, Lin; Xiao, Shuhai; Shen, Bing; Zhou, Chuanming (January 2008). "Silicified Horodyskia and Palaeopascichnus from upper Ediacaran cherts in South China:...

volume of eroded Palaeozoic rocks. The rock forming the Gegensteine is silicified sandstone — specifically, the Involutus-Sandstein of the Coniacian epoch...

ISSN 1374-8505. Schwarzhans, Werner W.; Jagt, John W. M. (2021-11-01). "Silicified otoliths from the Maastrichtian type area (Netherlands, Belgium) document...

cavernous limestone composed of aragonite and low-Mg-calcite, partly silicified. Their structure alternates between layers of in vivo calcifying Pleurocapsales...

helped to build a legacy of inter-related publications. Mass extraction of silicified fossils from limestone samples using a specially built facility at Macquarie...

clays derived from its decomposition. Resistant materials such as chert, silicified fossils, or beds of sandstone remain and may concentrate on the surface...

develop directly into new plants and may germinate within the sporangia. Silicified peritidal carbonate rocks have been found off Somerset Island, arctic...

sandstones, mudstones and siltstones of the Elliot Formation, which contains silicified wood and dinosaur fossils. The 15 to 250 meter thick Clarens Formation...

Brazil. The name (meaning Jarau hills) comes from the prominent crests of silicified sandstones, which form a semiring of elevated hills in the northern part...

described fossil species. The species was first described from specimens of silicified acorns preserved in chert of the "Yakima Canyon Flora". The chert was...

found in Central Washington. The species was described from specimens of silicified rhizomes and frond bases in blocks of chert. The cherts were recovered...

contrast with their immediate environment, the rocks of the Battertfelsen silicified due to an east-west oriented fault line. Because of this silicification...

are 0.4–9.7 meters (1.3–31.8 feet). The Elephant Butte Member contains silicified fossils of the demosponge Chaetetes, brachiopods, solitary corals and...

the underlying siltstone and is contorted by load structures. Silicified peat, silicified logs, and fossil leaf compressions and impressions have been...

JSTOR 3514834. Falcon-Lang, Howard J. (2003). "Growth interruptions in silicified conifer woods from the Upper Cretaceous Two Medicine Formation, Montana...

succession crops out north-west of the Hajigak deposits. It consists of grey silicified limestones and dolomites interbedded with dark grey crystalline schists...

Kansas. pp. 2591–2592. ISBN 978-0-8137-3136-0. Brunton, C.H.C. (1968). "Silicified brachiopods from the Visean of County Fermanagh (II)". Bulletin of the...

multiple horizons of well-preserved petrified forests and concentrations of silicified wood found within the Lamar River Formation that is exposed on it slopes...

type and binding of the material, (clay-bound sandstone as opposed to silicified quartz sandstone) to the formation of rock layers of different hardness...

ISSN 2039-4942. Schwarzhans, Werner W.; Jagt, John W. M. (2021-11-01). "Silicified otoliths from the Maastrichtian type area (Netherlands, Belgium) document...

generally poorly cemented, and poorly sorted. However, some beds are highly silicified. The member contains some well-developed normal grading sequences a few...

Invertebrate Paleontology. pp. 1–919. Butts, Susan H. (January 2007). "Silicified Carboniferous (Chesterian) Brachiopoda of the Arco Hills Formation, Idaho"...

Tamaricoxylon T. africanum Fossilized wood A tamarisk. Phragmites P. australis Silicified culms. Reeds commonly found in association with Tamaricoylon. Accrostichum...

south of the Hartebeeskuil dam however, is composed more of partially silicified sandstone and quartzite clasts. At Mossel Bay, the Enon outcrops are often...

02583°E / 13.64733; 39.02583) is hewn in the top of a butte of Tertiary silicified limestone, under a thin cover of basalt. The columns are rather crudely...

oogenus Mycomorphoolithus are also known from the Purbeck Group. The silicified stumps and trunks of cycads and coniferous trees, often surrounded by...

scrappers, and debris. The type of stone used for tools includes chert, silicified limestone and chalceneony. Badan Pusat Statistik, Jakarta, 26 September...

coroniformis Nutlets. A borage. Eleofimbris E. svensonii A cyperaceaen. Equisetum E. sp. West-central Nebraska. Silicified leaf-sheath fragments. A horsetail....

locally conglomeratic, that contains entire trunks and fragments of silicified wood (Dadoxilon benderi) conifer 3) Rift phase - Berriasian to Hauterivian...

Turkmenistan plain. Shale with lenses of spilite, jasper-like rocks and silicified limestone outcrops in the center of the Tuarkyr elevation. Together with...

262–274. doi:10.1086/337455. S2CID 85063424. Miller Jr, C. N. (1973). "Silicified cones and vegetative remains of Pinus from Eocene of British Columbia"...

sandstones referred to as “thin layers“. The rock zones consist of partially silicified, medium- and coarse-grained sandstones, which are in part gravelly. These...

J. Ind. Bat. Soc. 12 (2), 96–101. 1934. (With B. P. Srivastava) The silicified flora of the Deccan Intertrappean Series. Pt. 3. Sausarospermum Fermori...

mudstone layers contain thin chert lenses which have been attributed to silicified tuff deposits. Alternating beds of light grey to dark greenish grey siltstone...

sandy lenses), where fluvial sandstones with conglomeratic lenses bearing silicified logs dominate. In this locality, the basal bentonite deposits are commercially...

each other. The valve face is oval with a central part that is thinly silicified, surrounded by radiating fingerlike ribs. These ribs are more pronounced...

Palaeobotanist. 42: 1–7. Gee, C.; Sprinkel, D.; Bennis, M. B.; Gray, D. (2019). "Silicified logs of Agathoxylon hoodii (Tidwell et Medlyn) comb. nov. from Rainbow...

palaeoscolecid worms, bradoriid arthropods, and molluscs, along with an important silicified trilobite assemblage representative of the "Pararaia bunyerooensis Zone"...

genus; it is defined by the morphology of the bacterial colonies and their silicified fossils. Phormidium mats are found in other geothermal areas around the...

distinguishing characters are the massive ledge of uniform thickness, the silicified nodules, and the abundance of fusulinids, chiefly in the resistant upper...

skeleton-lacking and skeleton-bearing species. Intraspecific variability in silicified skeletal structures was also observed which emphasized the uncertainty...

crusts several meters thick can also occur. Carbonaceous mudstones and silicified limestones also occur locally at the top of the succession. The Trossingen...

Italy. It occurs in chert in a manganese ore deposit as vein fillings in silicified wood. It consists of: Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols"...

tops of the shell units. The type specimen of Sphaerovum erbeni is too silicified to make out its microstructure, however many specimens of South American...

S2CID 212642535. Retrieved 16 June 2023. Murlidhar, R.G. (1991). "On a silicified wood from the Kota formation (Liassic) of the Pranhita Godavari Basin"...

ironstone or ironmasked sandstone". He furthermore wrote that there was silicified wood strewn over the ground. Jack's report also makes clear that there...

sericite schist follows the Puy-de-Cornut arkose. The arkose is strongly silicified and forms erosionally resistant morphological ridges. It is supposed to...

of the nutlet. Manchester, S.R.; McIntosh, W.C. (2007). "Late Eocene silicified fruits and seeds from the John Day Formation near Post, Oregon". PaleoBios...

single-edged core implements made on natural fragments of fossil wood and silicified tuff, which are associated with crude flake implements. However, domestications...

of tabular crystals. The crystals are found in the geodes of a deeply silicified limestone. It also occurs in the cavities of columnar stibnite. Other...

Central Washington. The species was first described from specimens of silicified infructescences in blocks of chert. The chert was recovered from the "Hi...

Mississippian times California was home to brachiopods and corals that would later silicify. Later, during the Carboniferous and Permian periods northern California...

Gold is found mainly in the form of native gold in quartz veins and in silicified and carbonate zones and in the form of tellurides and pyrite or arsenopyrite...

consist of interbedded sandstone, shale, and seams of coal. A widespread silicified zone characterized by hydrothermal alteration can be found at the summit...

conifers, cycads, and bennettitaleans have been discovered, including silicified fossil tree trunks in the sandstone sections which show evidence of being...

(frustles) are made of silicon They come in many shapes and sizes Diatoms Silicified frustule of a pennate diatom with two overlapping halves Guinardia delicatula...

calcite, and calcite precipitation in extension fractures. Outcrops of silicified mafic pillow lava are found along and west of the Ontario Northland Railway...

of Cretaceous flint and considered those dinoflagellates to have been silicified. Along with them, and of comparable size, were spheroidal to ovoidal bodies...

silica-chlorite alteration. The Cistern Formation conglomerates are intensely silicified. Whim Creek is hosted within the Rushall Slate, which is a finer-grained...

has modified the rocks around Koh-i-Sultan, with Miri Kaur featuring silicified rocks and the area southwest of Miri featuring acidic alteration. Some...

1038/297675a0. S2CID 4281064. Falcon-Lang, H.F. (2003). "Growth interruptions in silicified conifer woods from the Upper Cretaceous Two Medicine Formation, Montana...

of Paleontology 62 1, 93–103 Chatterton B. D. E., Wright A. J. (1986) Silicified Early Devonian trilobites from Mudgee, New South Wales, Alcheringa 10...

Sarighamish, which was situated in the area of maximum damage. The Miocene silicified alunite hanging wall in the southwestern overthrusts alluvial deposits...

phosphate content is of enough quantity to warrant mining. Mollusks (silicified) in casts and molds. Shark Teeth Petrified Wood Burnette, William C.,...

durable stone that occurs naturally throughout Kent, having formed out of silicified sand from the Eocene epoch. Early Neolithic builders would have selected...

west. The Straževica slopes are made of rich deposits of sandy-detrital silicified limestone, which are even today exploited in the Kijevo Quarry, which...

JSTOR 3514834. Falcon-Lang, Howard J. (2003). "Growth interruptions in silicified conifer woods from the Upper Cretaceous Two Medicine Formation, Montana...

flora'; some with cuticle preservation and some flowers preserved. Large silicified trunks (up to 9 m) of redwood, and some very soft wood preserved. Some...

(4): 667–673. doi:10.1080/00275514.1998.12026955. Miller, C. (1975). "Silicified cones and vegetative remains of Pinus from the Eocene of British Columbia"...

manufacture of stone tools included heat treatment of quartzite, flint, silicified Smoky Hill Chalk, and silcrete. Given that no evidence of permanent occupation...

seed packing of the studied cones. Gee, Xie & Howell (2025) describe silicified wood and coalified tree trunks of Agathoxylon hoodii associated with seed...

the lower part of the interior sloping inwards. The stone blocks are of silicified limestone of irregular size. Brickwork was mentioned in a newspaper report...

crinoids have been recovered from drill cuttings. Finally, well-preserved, silicified fossils of Prototaxites have been observed and collected from the black...

to 23 metres (75 ft) of boulder clay. Rock outcrops are greenschist, silicified sericite, thinly bedded argillites, and serpentinite. The significant...

main architectural feature of the building. It is built from very hard silicified limestone and supported by four massive buttresses. These rise just above...

belonging to the Tribosphenida; plesiosaurs; and possibly ichthyosaurs. Silicified wood is also present in the strata. Maganuco, S.; Dal Sasso, C.; Pasini...

; Herrera, F.; Herendeen, P. S.; Clark, E. G.; Crane, P. R. (2022). "Silicified cupulate seed-bearing structures from the Early Cretaceous of eastern...

found higher in the Valentine and the weathered Niobrara Chalk is also silicified where there is contact with these beds in the Valentine. Valentine opaline...

coarse-grained sandstones with large cross-stratification sets, associated with silicified oolitic-oncolitic calcarenites, algal mats and stromatolites. The original...

Levallois-like flaking techniques These chert deposits are interpreted as silicified residues from limestone and represent the only documented primary chert...

and ultramafic volcanics. Thin interbedded sedimentary units that have silicified into impure chert mark breaks that have resulted from eruptive activity...

toolstone sources such as the Silver Mound Quarry Complex for Hixton Silicified Sandstone in Wisconsin, and the Knife River Flint Quarries of North Dakota...

limestones consist of fragmented bivalve shells, frequently dolomitized and silicified. In more distal sections, the formation consists of dark organic matter...

quartz was by far the dominant raw material, but silex, quartzite and silicified sandstone were also used. There is no clear division between artifact...

durable stone that occurs naturally throughout Kent, having formed out of silicified sand from the Eocene. Early Neolithic builders would have selected blocks...

in the vicinity is the argillaceous slate, but according to some it is silicified schist. At the Steel Mine ore consists of thin seams of free gold, galena...

inscriptions but the major factor is the quality of stone, i.e. the softer less silicified the sandstone the faster it deteriorates. Seeping ground water, lichen...

limestone lenses Génis Sericite Schist containing Ordovician acritarchs silicified arkoses of Moulin du Guimalet, showing a possible affinity to the Ordovician...

scorpionflies, and oribatid mites known from trace fossils found in silicified wood. 2016 in paleontology Poropat, S.F.; Mannion, P.D.; Upchurch, P.;...

be approximately 564.09 million years old by Clarke et al. (2024). New silicified fossil assemblage is described from the Ediacaran Dengying Formation (Shaanxi...

where it is coarser (including boulder conglomerates) and partially silicified. The formation is interpreted as stream and floodplain deposits near the...

(2): 207–217. doi:10.1086/337765. S2CID 86651676. Miller, C. (1975). "Silicified cones and vegetative remains of Pinus from the Eocene of British Columbia"...

brown, variably sandy clay with inclusions of variably fossiliferous, silicified limestone. The residuum includes Lower to Upper Miocene and younger weathered...

dolomitic component but rarely is it dominated with dolomite or limestone. Silicified nodules are often present in the sediments and may contain 20% or more...

and contain only rarely fish remnants, planktonic organisms as well as silicified, manganized, or coalified plant fragments. Celadonite and smectite, especially...

S2CID 130147042. William J. Foster; Silvia Danise; Richard J. Twitchett (2016). "A silicified Early Triassic marine assemblage from Svalbard". Journal of Systematic...

Palaeontographica Abteilung B. 234: 19–40. Erwin, D. M.; Stockey, R. A. (1991). "Silicified monocotyledons from the Middle Eocene Princeton chert (Allenby Formation)...

1186/s13358-022-00243-5. S2CID 247060503. Schwarzhans, W.; Jagt, J. W. M. (2022). "Silicified bony fish otoliths from the Vaals Formation (lower Campanian) of Vaals-Eschberg...

quascirev.2017.08.012. ISSN 0277-3791. White, R. S.; Morgan, G. S. (2025). "Silicified plant fossils (Cyperaceae) and associated fauna from Late Pleistocene...

262–274. doi:10.1086/337455. S2CID 85063424. Miller Jr, C. N. (1973). "Silicified cones and vegetative remains of Pinus from Eocene of British Columbia"...

245–258. hdl:2027.42/48297. Retrieved 2021-01-06. Miller, C.N. (1975). "Silicified cones and vegetative remains of Pinus from the Eocene of British Columbia"...

carbonate or silica throughout their growth, resulting in calcified or silicified specimens. The second, 'replacement mineralization,' occurs when plant...

the eastern Grand Canyon. The thin chert beds in this member consist of silicified bryozoan wackestones and lime mudstones. The Thunder Springs Member gradually...

-H.; Lee, J. I. (2024). "Taxonomic revision of in situ tree trunks and silicified wood from the Early Jurassic Kirkpatrick Basalt in the Mesa Range area...

south-east. The stones consist all of the same material - a very hard, silicified and iron-bearing, very fine-grained sandstone of orange-brown colour,...

quartz, in which are found embedded fragments of the surrounding gneiss, silicified and sericitized. The Antrona Valley is surrounded by mountains on its...

cells. Resting spores use excessive amounts of silica to create a heavily silicified cell wall. They then sink to the sediment until conditions are favorable...

; Liu, L.; Wang, J. (2021). "Zhuotingoxylon liaoi gen. et sp. nov., a silicified coniferous trunk from the Changhsingian (Permian) of southern Bogda Mountains...

limestones consist of fragmented bivalve shells, frequently dolomitized and silicified. In more distal sections, the formation consists of dark organic matter...

California Press. Manchester, S.R.; McIntosh, W.C. (2007). "Late Eocene silicified fruits and seeds from the John Day Formation near Post, Oregon". PaleoBios...

enough to be anoxic, but too deep for most wave-action. Whole and broken silicified fossils of brachiopods and gastropods are known, along with the occasional...

by Polechová (2025). Shi et al. (2025) report the first discovery of silicified bivalve fossils from the Permian (Kungurian−Roadian) strata of the Wandrawandian...

marshland. The Straževica slopes are made of rich deposits of sandy-detrital silicified limestone, which are even today exploited in the Kijevo Quarry, which...

lacustrine deposits, interbedded in the basalt formations, contain a range of silicified mollusc fossils. In the Antalo Limestone: large Paracenoceratidae cephalopods...

(around Nempnett Thrubwell) consists of the Harptree Beds which incorporate silicified clay, shale and Lias Limestone. Clifton Down Limestone, which includes...

shallowing of the surface mixed layer and lower nutrient concentrations. Silicified frustule of a pennate diatom with two overlapping halves Guinardia delicatula...

dolomite bed (the Flakey dolomite). The Flakey dolomite is overlain by silicified oolites, chert beds, black shales. A pair of meter-scale dolomite beds...

revpalbo.2017.11.002.. Manchester, S.R.; McIntosh, W.C. (2007). "Late Eocene silicified fruits and seeds from the John Day Formation near Post, Oregon". PaleoBios...

Arecaceae". Palaeontographica Abteilung B. 234: 19–40. Miller, C. (1975). "Silicified cones and vegetative remains of Pinus from the Eocene of British Columbia"...

the Queensland Heritage Register. Queens Park contains two ridges of silicified magnesian limestone running north-northwest and south-southeast. This...

Retrieved 2011-12-21. Manchester, S.R.; McIntosh, W.C. (2007). "Late Eocene silicified fruits and seeds from the John Day Formation near Post, Oregon". PaleoBios...

(2017). "Unique growth strategy in the Earth's first trees revealed in silicified fossil trunks from China". Proceedings of the National Academy of Sciences...

Toarcian (claystones and grey marls). Near the border faults the Lias can be silicified. The Toarcian clays were once quarried by a (now redundant) tile factory...

in situ within sphenophytes. A study on the anatomy and affinities of silicified stems of Sphenophyllum from the Tournaisian deposits in the Montagne Noire...

Gen nov Valid Hof Late Cretaceous (Campanian) Mishash Formation Amman Silicified Limestone Formation Israel Jordan A mantis shrimp, type species is U....

locally conglomeratic, that contains entire trunks and fragments of silicified wood (Dadoxilon benderi) conifer 3) Rift phase - Berriasian to Hauterivian...

Suzukure A quiet girl who is a shiki tsukai of June. Wields the June 6 Silicified Wood shikifu and daughter of the prestigious Suzukure family. She hasn't...

and crocodilian remains and an ornithopod sacrum, as well as a large silicified log assigned to the genus Paraphyllanthoxylon, representing the largest...

subject, containing an explanation of the phaenomena exhibited by partially silicified wood, and of the progressive steps in the process of petrifaction. In...

contains fragments of wood, either in the state of lignite or partially silicified, shark's teeth, and shells in great abundance... — Charles Darwin Early...

processes and contain up to 2 chloroplasts per cell. Processes are tube-like silicified projections that protrude from the valve wall. Fultoportula processes...

Alabama. The Early Tertiary Claiborne Group is well known for preserving silicified Ostrea oysters. Claiborne Group outcrops in the state also preserve fossil...

likewise known from these deposits. The fossil flora is equally diverse and silicified tree trunks - some with evidence of being charred by fire - have also...

show 1–1.5-meter-thick pyroclastic layers with abundant charred and silicified wood. Koholma features 0.5 meters of green-brown tuff with large clasts...

.294K. doi:10.1086/657649. S2CID 84137991. Miller Jr, C. N. (1973). "Silicified cones and vegetative remains of Pinus from Eocene of British Columbia"...

2298/GABP210616006B. S2CID 243646792. Schwarzhans, W. W.; Jagt, J. W. M. (2021). "Silicified otoliths from the Maastrichtian type area (Netherlands, Belgium) document...

76 m (250 ft) Ranger Canyon Formation Roadian to Wordian dark chert, silicified sandstone, evaporite minerals 30 m (100 ft) Ross Creek Formation late...

759–778. doi:10.4202/app.00387.2017. Christopher A. McRoberts (2017). "A silicified Late Triassic (Norian) bivalve molluscan fauna from the Alexander Terrane...

Qing-Lai Feng; Maliha Zareen Khan; Stanley Awramik; Shi-Xing Zhu (2017). "Silicified microbiota from the Paleoproterozoic Dahongyu Formation, Tianjin, China"...

(4): 667–673. doi:10.1080/00275514.1998.12026955. Miller, C. (1975). "Silicified cones and vegetative remains of Pinus from the Eocene of British Columbia"...

Calça; Thomas Rich Fairchild (2020). "A widespread, nearly monospecific silicified coccoidal microbiota from the Permian of Brazil (Assistência Formation...

pebble- to cobble-sized volcanic fragments (welded tuff and andesite) and silicified woods comprise the minor component of the coarse fraction. Fossil invertebrate...

extant termites belonging to the family Kalotermitidae are described from silicified conifer woods from the Albian Kachaike Formation (Argentina) by Greppi...

nov In press Wan, Yang & Wang Late Permian Turpan–Hami Basin China A silicified gymnospermous fossil wood. Genus includes new species P. uniseriale. Phoenicopsis...

and crocodilian remains and an ornithopod sacrum, as well as a large silicified log assigned to the genus Paraphyllanthoxylon, representing the largest...

Needham; Paul Kenrick (2014). "X-ray Synchrotron Microtomography of a silicified Jurassic Cheirolepidiaceae (Conifer) cone: histology and morphology of...

al. (2018). The oldest known shipworms reported so far, preserved with silicified soft parts, are described from the mid-Cretaceous logs of the Envigne...