Sub-Paleogene surface
The Sub-Paleogene surface is an ancient erosion surface that exists in southern England. In parts the Sub-Paleogene surface appear as tilted plain and parts as an unconformity beneath sediments of Paleogene age.[1] The surface was formed by the erosion of chalklands in England following a regression in the Maastrichtian age.[1] The time during which the surface formed has been estimated by comparing the age of the last Maastrichtian chalk to deposit and the age of the earliest Paleogene sediment to cover the surface. This yields a bracket between 71–73 million years ago (Mya) and 59.3 Mya.[2]
The cause of the regression and hence of the erosion above sea level has been debated. It has been linked to
The surface was formerly known as Sub-Eocene surface until it was discovered that some sediments overlying the surface were in fact Paleogene.[1]
See also
References
- ^ ISBN 978-0-203-86008-3.
- ^ S2CID 133817989.
 | This article about a specific United Kingdom geological feature is a stub. You can help Wikipedia by expanding it. |
 | This article about stratigraphy is a stub. You can help Wikipedia by expanding it. |