کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4465757 1622142 2016 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Last Glacial palaeoenvironments at Lascaux, southwest France, with special emphasis on MIS 4 (Ognon II interstadial)
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Last Glacial palaeoenvironments at Lascaux, southwest France, with special emphasis on MIS 4 (Ognon II interstadial)
چکیده انگلیسی


• MIS 4 peats filling a doline at Lascaux, southwest France
• Pollen, seeds, and beetle remains portray the image of a cool steppe with willow stands.
• Local vegetation of aquatic and hygrophilous plants
• OSL ages and palaeoenvironnemental data compatible with Ognon II interstadial
• Peats buried by 6 m-thick pleniglacial slope deposits

A deep sequence of Last Glacial peats and slope deposits at the foot of the Lascaux hill was investigated using a large array of methods (geology, geophysics, 14C and OSL dating, palynology, macro-remain analysis, entomology). The peaty levels, OSL dated to between ~ 73 and 60 ka, are found within a doline developed in a fluvial terrace of the Vézère River. These gyttja and chalky gyttja deposits covered by fen peat yielded abundant beetle and plant (seeds, pollen) remains. Palaeoecological reconstructions suggest a cool steppe with willow stands compatible with an interstadial of marine isotopic stage (MIS) 4, probably Ognon II (GI-19.2). Aquatic and hygrophilous plants (sedges), which reflect local vegetation, and their dependent insects are equally well represented in the record. The peats are covered by a sequence of slope deposits: a coarse-grained lower unit deposited during late MIS 4, overlain by a heavily decalcified sandy unit with a boreal soil complex correlated with early MIS 3, and finally, a coarse-grained, calcareous unit formed during late MIS 3 and MIS 2 in connection with slope dynamics typical of periglacial environments. The palaeosols yielded a small Middle Palaeolithic lithic assemblage.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 449, 1 May 2016, Pages 149–165
نویسندگان
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