Latérite als Leithorizonte zur Rekonstruktion tektonischer Vorgänge auf den Festländern |
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| Authors: | Prof Dr Ida Valeton |
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| Institution: | 1. Sedimentpetrographisches Labor, Geologisch-Pal?ontologisches Institut der Universit?t Hamburg, VonMelle-Park 11, 2 Hamburg 13
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| Abstract: | A reconstruction is made of the relief which is probably developed through peneplanation and a contemporary deep kaolinisation during late Cretaceous time before the laterite formation and the relief at the time of the laterite formation in Eocene in the region of the present Guiana shield and its foreland. A characteristic plain with very shallow valleys and a thick Al-laterite on its surface was formed during Eocene time. The Al-laterite is used as a characteristic and reference horizon for the post Eocene tectonic which is characterized by a main bulge of the Guiana shield in Surinam, a weaker lift in Guyana and a submergence below sea level in the north. |
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