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Liquefied rocks: seismites
Israel

In a canyon by the dead sea, these (Lissan) sediments where depositing at the bottom of the sea or a lake millions of years ago, when they have been deformed by an earthquake. They started to form wavy structures, that where visible due to the alternance between summer and winter sediments, depositing as mm sized light or dark layers - with a thick layer corresponding to flooding deposits from time to time. Other sediments came on top, the rock hardened, leading to the formation of seismites, the name of these deformed sedimentary rocks. Other similar events happened, with other seismite layers on top of the first ones. These seismites extend over long canyons, corresponding to the liquefaction of a large area. This was pictured during a field trip through the ITN Flowtrans first topical school (http://flowtrans.digijuice.co.uk , organized by E. Aharonov, Hebrew Univ. of Jerusalem, with the guidance of N. Wetzler, T.A.U. - many thanks. More info on http://eost.unistra.fr/renaud/

Copyright: Renaud toussaint
Type: Spherical
Resolution: 11516x5758
Uploaded: 11/11/2013
Updated: 15/08/2014
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Tags: desert; seismites; liquefaction; sediments; canyon; dead-sea; geology; itn; field; earthquake; rock; waves; mer-morte; géologie; terrain; tremblement de terre; roches; ondes
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