Foundered strata

Foundered strata is a term used by the British Geological Survey in its maps and geological memoirs, and by other authors, to describe rock strata which have collapsed due, for example, to the dissolution of underlying strata. Foundered strata may retain original bedding more or less intact or they may assume a chaotic structure in the process of collapse or some intermediate state of disruption.

Examples of foundered strata are found along the northern margin of the outcrop of the Twrch Sandstone (the former Basal Grit of the Millstone Grit) in the Brecon Beacons National Park of South Wales. The immediately underlying Carboniferous Limestone has dissolved away in numerous locations such as at Pwll Byfre and resulted in the wholesale collapse of the sandstone beds above it. It is thought that the sandstone has been let down several hundred feet in places due to the removal by solution of limestone strata.[1][2]

See also

  • Karst – Topography from dissolved soluble rocks

References

  1. ^ T.R.Owen, Geology Explained in South Wales, David & Charles 1973
  2. ^ British Geological Survey 1:50,000 map sheet 231 'Merthyr Tydfil' and accompanying memoir


Stub icon

This article about structural geology is a stub. You can help Wikipedia by adding missing information.

Stub icon

This article about a specific United Kingdom geological feature is a stub. You can help Wikipedia by adding missing information.

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.