World Library  
Flag as Inappropriate
Email this Article

Rotliegendes

Article Id: WHEBN0026393296
Reproduction Date:

Title: Rotliegendes  
Author: World Heritage Encyclopedia
Language: English
Subject: Rhyolite, Fichtel Mountains, Kitzbühel Alps, North Sea oil, Nahe (river), Palatinate Forest, Freital
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Rotliegendes

The Rotliegend or Rotliegendes (German: the underlying red) is a lithostratigraphic unit (a sequence of rock strata) of Cisuralian (early Permian) age that is found in the subsurface of large areas in western and central Europe. The Rotliegend mainly consists of sandstone layers. It is usually covered by the Zechstein and lies on top of regionally different formations of late Carboniferous age.

The name Rotliegend has in the past not only been used to address the rock strata themselves, but also the time span in which they were formed (in which case the Rotliegend was considered a series or subsystem of the Permian). This time span corresponds roughly with the length of the Cisuralian epoch.

Facies and formation

In large parts of Pangaea, the last phases of the Hercynian orogeny were still ongoing during the start of the Permian. At the same time local crustal extension formed intramontane basins such as the large Permian Basin which covered parts of present day Germany, Poland, Denmark, the North Sea, the Baltic Sea and the Netherlands. The early development of the basin went hand in hand with volcanism. Apart from these volcanic deposits the basin was filled by the erosional products of the Hercynian mountains to the south: mostly sands and gravels deposited under an arid and warm climate.[1]

Stratigraphy

In the north of Germany and in the Netherlands the Rotliegend is usually subdivided into two groups: a Lower Rotliegend Group (mostly volcanic rocks: tuffs and basaltic lavas) and an Upper Rotliegend Group (sandstones and siltstones). During the formation of the lower group the basin was still small and the deposition was restricted to the centre of the basin in the southeastern North Sea and northern Germany, this group is very limited in thickness in the Dutch subsurface. The upper group has a larger arial distribution since the basin had grown wider.

In Dutch lithostratigraphy, the Rotliegend lies on top of the late Carboniferous Limburg Group and below the Zechstein Group. The Upper Rotliegend Group is divided in the Silverpit Formation and Slochteren Formation, the last is an important reservoir for hydrocarbons. The German Bentheim Sandstone, which crops out in the Münsterland, is part of the Slochteren Formation.

The Rotliegend of northern Germany is continuous with that of the Netherlands. In other parts of Germany contemporaneous basins exist, such as the Saar-Nahe Basin, the Wetterau or the Saale Basin. The Rotliegend of these different intramontane basins is not easy to correlate and the lithostratigraphy of each basin has its own divisions (groups and formations).

Notes

Literature

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 



Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.