Till stratigraphy and ice movements in eastern Overijssel, The Netherlands |
| |
Authors: | SJOERD J KLUIVING MARTIN RAPPOL DICK VAN DER WATEREN |
| |
Institution: | Physical Geography and Soil Science Laboratory, University of Amsterdam, Nieuwe Prinsengracht 130, NL–1018 VZ Amsterdam, The Netherlands;Dick van der Wateren, Geological Survey of The Netherlands, P.O. Box 157, NL–2000 AD Haarlem, The Netherlands |
| |
Abstract: | A three–till section in eastern Overijssel, eastern Netherlands, represents the most complete till sequence of the Older Saalian glaciation presently known from The Netherlands and adjacent Germany. On the basis of structural analyses, four different glacial events within one continuous glacial cover can be distinguished: (1) deposition of till 1 (lowest till) by ice probably moving in a southerly direction, (2) glaciotectonic dislocation of till 1 under a compressive strain regime acting towards the west, (3) deposition of till 2 by ice moving in a westerly direction, and (4) deposition of till 3 by southeasterly moving ice. During deposition of tills 2 and 3, the underlying older tills were subjected to a strong extensional tectonic regimc, leading among other things to the development of characteristic sheath folds. On the basis of directional and compositional characteristics, the three tills can be correlated with the till stratigraphy of the northern Netherlands. |
| |
Keywords: | |
|
|