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The Study on Stectonic and Sedimentary Environment during the Carboniferous-Permian in the Eastern Part of Inner Mongolia

Author: ZhaoLiMin
Tutor: LiuYongJiang
School: Jilin University
Course: Structural Geology
Keywords: Eastern Inner Mongolia Tectono - sedimentary environment Carboniferous - Permian Xilamulun collision zone
CLC: P542
Type: Master's thesis
Year: 2010
Downloads: 301
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Abstract


Summarized by finishing 1:200000 regional survey of the eastern part of Inner Mongolia , combined with field geology study , the Carboniferous - Permian tectono - sedimentary environment . Study area Early Carboniferous little formation deposition , may for ancient land areas ; Late Carboniferous , southern mainly to marine clastic and carbonate rocks , the Northern Territory Supreme Carboniferous deposits ; Early Permian very frequent volcanic activity , the era of the deposition of a thick pyroclastic rocks ; middle Permian Zhesi group belonging to the marine and land and sea interaction deposition , mainly developed in carbonate rocks , sandstone , mudstone , silty mudstone , regressive features ; late Permian linxi group mainly for continental deposits, and development of sandstone , mudstone , silty mudstone . Sedimentary environment combined with previous studies infer ancient ocean between the North China plate with good Mongolian block began to shrink in the mid - Permian , the end of the end of the Late Permian collision collage . According to the depositional environment , Permian sandstone geochemical characteristics and source analysis to infer the end of the Early Carboniferous - Late Carboniferous Paleoasian to Jia Meng block the southern edge of subduction formation Sunitezuoqi, - Xilinhot - Sioux Everest Qin flag arc magmatic rocks ; Early Permian , the subduction zone Move Paleoasian formation of the widely developed Dashizai area volcanic rocks of ; middle Permian , subduction of the Paleo-Asian Ocean to the south main , and began to shrink in the medium term closed, good Mongolian block south edge in a passive continental margin tectonic setting , development of stable marine Zhesi Formation , late Permian Paleo-Asian Ocean in the closed state , strata of development continental Linxi group .

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CLC: > Astronomy,Earth Sciences > Geology > Structural Geology > Tectonic movement
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