| Late Proterozoic Colisional Orogen and Geosuture in Southeastern China：Petrological Evidence |
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| 引用本文： | 周新民,朱云鹤.Late Proterozoic Colisional Orogen and Geosuture in Southeastern China：Petrological Evidence[J].中国地球化学学报,1993,12(3):239-251. |
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| 作者姓名： | 周新民 朱云鹤 |
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| 作者单位： | [1]DepartmentofEarthSciences,NanjingUniversity,Nanjing,210008 [2]DepartmentofEarthSciences,NanjingUniversit |
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| 摘 要： | The Jiangshan-Shaoxing fracture belt(JSFB)is a Late Proterozoic geosuture due to island arc-continent collision in South China,The Cathaysian Block(CT),lying on the southeast side of JSFB,is composed of green schist-amphibolite complexes in the form of a series of tectonic flakes. On the northwest side of JSFB,which is located in the border area of Zheijiang,Jiangxi and Ahhhi provinces(abbreviated as ZJP-JXP-AHP),are distrbuted and ophiolite suite and other rocks,constituting the Jiangnan ancient island arc(JN)on the southeast margin of the Yangtze Block(YZ).The collision between JN and CT at-0.9Ga ago led to the folding of JN.followed by the intrusion(-0.9-0.8Ga ago)of many dioritic and ultramafic stitching plutons along the fracture belt.As a result,the basic Precambrian tectonic framework of southeastern China was shaped.
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| 关 键 词： | 地缝合线 碰撞造山带 华夏板块 东南地区 江南地区 |
Late Proterozoic colisional orogen and geosuture in Southeastern China: Petrological evidence |
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| Zhou Xinmin,Zhu Yunhe.Late Proterozoic colisional orogen and geosuture in Southeastern China: Petrological evidence[J].Chinese Journal of Geochemistry,1993,12(3):239-251. |
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| Authors: | Zhou Xinmin Zhu Yunhe |
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| Institution: | (1) Department of Earth Sciences, Nanjing University, 210008 Nanjing |
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| Abstract: | The Jiangshan-Shaoxing fracture belt (JSFB) is a Late Proterozoic geosuture due to island arc-continent collision in South
China. The Cathaysian Block (CT), lying on the southeast side of JSFB, is composed of green schist-amphibolite complexes in
the form of a series of tectonic flakes. On the northwest side of JSFB, which is located in the border area of Zhejiang, Jiangxi
and Anhhi provinces ( abbreviated as ZJP-JXP-AHP ), are distributed an ophiolite suite and other rocks, constituting the Jiangnan
ancient island arc (JN) on the southeast margin of the Yangtze Block (Y Z). The collision between JN and CT at R∼ 0.9Ga ago
led to the folding of JN, followed by the intrusion (∼ 0.9–0.8Ga ago) of many dioritic and ultramafic stitching plutons along
the fracture belt. As a result, the basic Precambrian tectonic framework of southeastern China was shaped. |
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| Keywords: | Jiangshan-Shaoxing fracture belt Jiangnan ancient island arc Cathaysian Block geosuture collisional orogen |
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