Lithologic Boundaries in Permian Post-glacial Sediments of the Gondwana-affinity Regions of China： Typical Sections, Age Range and Correlation

In Southwest China, Gondwana-affinity Permo-Carboniferons deposits are known to occur in the Northern Himalayas, the Lhasa Block and the South Qiangtang Block, the Baoshan Block and the Tengchong Bock. The three-fold clastic successions, namely diamictite-pebbly mudstone-dark mudstone and shale are...

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Published inActa geologica Sinica (Beijing) Vol. 85; no. 2; pp. 373 - 386
Main Authors JIN, Xiaochi, HUANG, Hao, SHI, Yukun, ZHAN, Lipei
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Publishing Ltd 01.04.2011
Wiley Subscription Services, Inc
Institute of Geology, Chinese Academy of Geological Sciences,26 Baiwanzhuang Road, Beijing 100037, China%Department of Earth Sciences, Nanjing Univeristy,22 Hankou Road, Nanjing, Jiangsu 210093, China
EditionEnglish ed.
Subjects
Gondwana-affinity
Permian
post-glacial
Tibet
Yunnan
中国西南地区
二叠纪
亲和
典型剖面
冈瓦纳古陆
冰期
沉积物
碳酸盐沉积
Pakistan, Himalayas
China, People's Rep
post-glacial
Yunnan
Permian
Tibet
Gondwana-affinity
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Summary:In Southwest China, Gondwana-affinity Permo-Carboniferons deposits are known to occur in the Northern Himalayas, the Lhasa Block and the South Qiangtang Block, the Baoshan Block and the Tengchong Bock. The three-fold clastic successions, namely diamictite-pebbly mudstone-dark mudstone and shale are commonly interpreted as representing deposits of glacial-deglacial-postglacial periods in marine environments. Deposits, for example, the Dingjiazhai Formation in the Baoshan Block, the Kongshuhe Formation in the Tengchong Block, the Yongzhu Group and the Poindo Group in the Lhasa Block, are all succeeded by carbonate deposits. This marks a significant change from post-glacial clastic environment to a carbonate environment. Available paleontological data show that the change from post-glacial clastic environment to carbonate environment took place in the Baoshan, Tengchong and Lhasa Block at the beginning of the Artinskian. The carbonate environment in the Baoshan Block was spoiled by the eruption of the Woniusi Basalts, and in the Xainza area of the Lhasa Block was shortly replaced by clastic environment until the Kungurian. In the northern Himalayas limestones began to occur in the Late Permian in a fluctuating manner.
Bibliography:Permian; Gondwana-affinity; post-glacial; Yunnan; Tibet
11-2001/P
In Southwest China, Gondwana-affinity Permo-Carboniferons deposits are known to occur in the Northern Himalayas, the Lhasa Block and the South Qiangtang Block, the Baoshan Block and the Tengchong Bock. The three-fold clastic successions, namely diamictite-pebbly mudstone-dark mudstone and shale are commonly interpreted as representing deposits of glacial-deglacial-postglacial periods in marine environments. Deposits, for example, the Dingjiazhai Formation in the Baoshan Block, the Kongshuhe Formation in the Tengchong Block, the Yongzhu Group and the Poindo Group in the Lhasa Block, are all succeeded by carbonate deposits. This marks a significant change from post-glacial clastic environment to a carbonate environment. Available paleontological data show that the change from post-glacial clastic environment to carbonate environment took place in the Baoshan, Tengchong and Lhasa Block at the beginning of the Artinskian. The carbonate environment in the Baoshan Block was spoiled by the eruption of the Woniusi Basalts, and in the Xainza area of the Lhasa Block was shortly replaced by clastic environment until the Kungurian. In the northern Himalayas limestones began to occur in the Late Permian in a fluctuating manner.
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content type line 23
ISSN:1000-9515
1755-6724
DOI:10.1111/j.1755-6724.2011.00406.x