Correlation of Carboniferous Depositional Sequences on the Yangtze Plate with Others on A Global Scale

Li Rufeng; Liu Benpei; Zhao Chenglin

Based on the correlation of the depositional sequences in different orders on the internal YangtzePlate, Yangtze Plate and Huabei Plate, Yangtze Plate and Euramerica Plate, the sea-level curve of theCarboniferous in the main areas of worldwide was worked out. within the Yangtze Plate, the 2nd orderdeposition sequence can be correlated between the Upper Yangtze and Lower Yangtze region, but trans-gression and onlap on the Lower Yangtze region lagged the Upper Yangtze region, the 3rd order deposi-tional sequence can not be correlated because of lacking enough data. In the Huabei Plate, there are one3rd order depositional sequence in the Fusulinella-Fusulina zone and four 3rd order depositional se-quences in the Triticites-Pseuoschwagerina zone, all of them can be correlated with those on the YangtzePlate. Between the Yangtze Plate and the Eurmarican Plate, the 3rd and 4th order can be correlated dur-ing Gzhelian of the Later Carboniferous, but the compositions of the the 4th order depositional sequenceis different because the Yangtze Plate and the North Mid-American continent ( representing the Eurmari-can Plate ) are located in different tectonic setting, the same number of the 4th order depositional se-quences on the two different plates is regarded as the proof of depositional records of synchroneity, whichwas caused by global glacial-eustasy. Those reasons of the similarity and difference on the depositionalsequence orders for the same plate or different plate were discussed both for the glacial period andnonglacial period. The glacial eustasy is the primary factor which controls depositional sequences.There should be global!synchroneity among depositional sequences. But the difference of depositioncondition in the some area will also affect compositions ofdepositional sequences.

1 University of Petroleum,102200;

2 Geosciences University of China,100083

Received Date: 1996-03-20

Publish Date: 1997-09-10

Key words:

Abstract: Based on the correlation of the depositional sequences in different orders on the internal YangtzePlate, Yangtze Plate and Huabei Plate, Yangtze Plate and Euramerica Plate, the sea-level curve of theCarboniferous in the main areas of worldwide was worked out. within the Yangtze Plate, the 2nd orderdeposition sequence can be correlated between the Upper Yangtze and Lower Yangtze region, but trans-gression and onlap on the Lower Yangtze region lagged the Upper Yangtze region, the 3rd order deposi-tional sequence can not be correlated because of lacking enough data. In the Huabei Plate, there are one3rd order depositional sequence in the Fusulinella-Fusulina zone and four 3rd order depositional se-quences in the Triticites-Pseuoschwagerina zone, all of them can be correlated with those on the YangtzePlate. Between the Yangtze Plate and the Eurmarican Plate, the 3rd and 4th order can be correlated dur-ing Gzhelian of the Later Carboniferous, but the compositions of the the 4th order depositional sequenceis different because the Yangtze Plate and the North Mid-American continent ( representing the Eurmari-can Plate ) are located in different tectonic setting, the same number of the 4th order depositional se-quences on the two different plates is regarded as the proof of depositional records of synchroneity, whichwas caused by global glacial-eustasy. Those reasons of the similarity and difference on the depositionalsequence orders for the same plate or different plate were discussed both for the glacial period andnonglacial period. The glacial eustasy is the primary factor which controls depositional sequences.There should be global!synchroneity among depositional sequences. But the difference of depositioncondition in the some area will also affect compositions ofdepositional sequences.

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Reference (12)

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Correlation of Carboniferous Depositional Sequences on the Yangtze Plate with Others on A Global Scale

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