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Precambrian Geology of ChinaEarly Precambrian Geological Signatures in South China Craton

Precambrian Geology of China: Early Precambrian Geological Signatures in South China Craton [The South China Craton is formed through coalescence of the Yangtze and Cathaysian blocks in the Neoproterozoic and with 3 tectonic units included, the Yangtze and Cathaysia blocks and the intervening Jiangnan orogenic belt. As relatively young in formation time, the Yangtze craton is only sporadically distributed with Early Precambrian terranes. Some occurrences of Archean outcrop in northern Yangtze craton, such as the localities at Kongling, Yichang city, Huji, Zhongxiang city, of Hubei Province, and Yudongzi locality, Mian-Lue area, of Shaanxi Province. Among them, the Kongling terrane is well exposed, including the Meso–Neoarchean metamorphic supracrustal rocks of khondalite feature, the TTG gneiss series of 3.3, 2.9 and 2.7–2.6 Ga, and the metamorphism grade reached upper amphibolite to granulite facies. The Paleoproterozoic terranes are the Tangdan Group at southwestern margin, Houhe Complex at the northern margin of the Yangtze craton, the Badu Group, and the S-, I-granites at the northern margin of the Cathaysian block. Though the Archean and Paleoproterozoic rocks are sporadically exposed in South China Craton, the ubiquitous presence of the older detrital and inherited zircons suggests the once widespread occurrence of the Early Precambrian terranes on the craton. The zircon Hf-isotope compositions demonstrate three major magmatic events which were manifested substantially by the recycling of the crustal materials, accompanied by minor juvenile crustal accretion.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

Precambrian Geology of ChinaEarly Precambrian Geological Signatures in South China Craton

Part of the Springer Geology Book Series
Editors: Zhai, Mingguo
Geng, Yuan-Sheng
Precambrian Geology of China — Aug 12, 2015
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33 pages

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Publisher
Springer Berlin Heidelberg
Copyright
© Springer-Verlag Berlin Heidelberg 2015
ISBN
978-3-662-47884-4
Pages
207 –239
DOI
10.1007/978-3-662-47885-1_5
Publisher site
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Abstract

[The South China Craton is formed through coalescence of the Yangtze and Cathaysian blocks in the Neoproterozoic and with 3 tectonic units included, the Yangtze and Cathaysia blocks and the intervening Jiangnan orogenic belt. As relatively young in formation time, the Yangtze craton is only sporadically distributed with Early Precambrian terranes. Some occurrences of Archean outcrop in northern Yangtze craton, such as the localities at Kongling, Yichang city, Huji, Zhongxiang city, of Hubei Province, and Yudongzi locality, Mian-Lue area, of Shaanxi Province. Among them, the Kongling terrane is well exposed, including the Meso–Neoarchean metamorphic supracrustal rocks of khondalite feature, the TTG gneiss series of 3.3, 2.9 and 2.7–2.6 Ga, and the metamorphism grade reached upper amphibolite to granulite facies. The Paleoproterozoic terranes are the Tangdan Group at southwestern margin, Houhe Complex at the northern margin of the Yangtze craton, the Badu Group, and the S-, I-granites at the northern margin of the Cathaysian block. Though the Archean and Paleoproterozoic rocks are sporadically exposed in South China Craton, the ubiquitous presence of the older detrital and inherited zircons suggests the once widespread occurrence of the Early Precambrian terranes on the craton. The zircon Hf-isotope compositions demonstrate three major magmatic events which were manifested substantially by the recycling of the crustal materials, accompanied by minor juvenile crustal accretion.]

Published: Aug 12, 2015

Keywords: Archean; Paleoproterozoic; South China Craton; Yangtze block; Cathaysian block; Jiangnan (orogenic) belt; Dongchonghe complex

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