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The Mendel Formation: Evidence for Late Miocene climatic cyclicity at the northern tip of the Antarctic Peninsula
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SYSNO ASEP 0375751 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The Mendel Formation: Evidence for Late Miocene climatic cyclicity at the northern tip of the Antarctic Peninsula Author(s) Nývlt, D. (CZ)
Košler, J. (CZ)
Mlčoch, B. (CZ)
Mixa, P. (CZ)
Lisá, Lenka (GLU-S) RID, SAI, ORCID
Bubík, M. (CZ)
Hendriks, B. W. H. (NO)Source Title Palaeogeography, Palaeoclimatology, Palaeoecology. - : Elsevier - ISSN 0031-0182
Roč. 299, 1/2 (2011), s. 363-384Number of pages 22 s. Publication form WWW - WWW Language eng - English Country NL - Netherlands Keywords Mendel Formation ; Late Miocene ; chmate ; Antarctic Peninsula Subject RIV DB - Geology ; Mineralogy CEZ AV0Z30130516 - GLU-S (2005-2011) UT WOS 000287051700030 EID SCOPUS 78650609676 DOI 10.1016/j.palaeo.2010.11.017 Annotation A detailed description of the newly defined Mendel Formation is presented. This Late Miocene (5.9–5.4 Ma) sedimentary sequence with an overall thickness of more than 80 m comprises cyclic deposition in terrestrial glacigenic, glaciomarine and marine environments. Subglacial till was deposited by a thick grounded Antarctic Peninsula ice stream advancing eastwards through the Prince Gustav Channel, crossing the northernmost part of present-day James Ross Island, with most of the material carried actively at the base of the warm-based glacier. The form of the Prince Gustav Channel originated before the late Miocene and its present glacial overdeepening resulted in multiple grounded glacier advances during the Neogene and Quaternary. The sea prograded from the east and the glacier margin became buoyant, building a small ice shelf, below and in front of which glaciomarine and marine sediments were deposited. These sedimentary deposits are composed of material that was transported mostly by small glaciers and subsequently by the floating ice shelf and by calving icebergs towards the open sea. The Mendel Formation sedimentary sequence is comprised of at least two glacial periods and one interglacial period. Sea level rise at the northern tip of the Antarctic Peninsula between glacial lowstand and interglacial highstand was more than 50 m during the late Miocene and was followed by a subsequent sea level fall of at least the same magnitude. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Year of Publishing 2012
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