Fossil gastropods from the MGS3 stratigraphic segment in the Salawusu River Valley and their climatic and environmental implications
作者： BaoSheng Li , DeNiu Chen , David Dian Zhang , XiaoHao Wen , ShiFan Qiu
DOI: 10.1007/S11430-008-0015-6
关键词:
摘要: Contemporaneous with MIS3, the MGS3 segment of Milanggouwan stratigraphic section in Salawusu River Valley, Mu Us Desert, China contains fossil gastropods (terrestrial and freshwater snails) strata 33LS, 35LS, 37FL 39LS. Examination these fossils revealed 11 species belonging to 8 families 10 genera. They can be classified as: (1) assemblage Gyraulus Galba mainly consisting convexiusculus, sibiricus, pervia superegra Gredler, etc. (2) Vallonia terrestrial snails, such as patens, Pupilla muscorum Discus paupe, Based on dating results, living habits, conditions, geographic distribution their extant species, we suggest that: ages 37FL, 39LS are 26000, 29000, 33000 38000 a, respectively, corresponding well interstadial period GRIP 4, 5, 6 terms chronology climatic characters; 35LS represent very warm-humid periods, while represents a less period; four periods fluctuations recorded were related strong impact summer monsoon East Asia Desert during MIS3 global background.
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