The recognizing of ca. 1.95 Ga tectono-thermal eventin Kongling nucleus and its significance for the evolution of Yangtze Block, South China

被引：58

作者：

Ling, WL ^{[1
]}

Gao, S

Zhang, BR

Zhou, L

Xu, QD

机构：

[1] China Univ Geosci, Fac Earth Sci, Wuhan 430074, Peoples R China

[2] NW Univ Xian, Dept Geol, Xian 710069, Peoples R China

来源：

CHINESE SCIENCE BULLETIN | 2001年 / 46卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Kongling high-grade metamorphic terrain; tectono-thermal event; Paleoproterozoic; unitive basement;

D O I：

10.1007/BF03187196

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Some 1.95 Ga metamorphism of high-grade Archean rocks in Kongling terrain, continental nucleus of Yangtze Block, South China, are recognized by Sm-Nd dating. This event is further confirmed by the ages of single zircon SHRIMP U-Pb and K-Ar analyses of TTG and (or) paragneisses, and intrusions of potassic-granitic batholith in the region. The coincidence in period between the high-grade metamorphism in the Kongling area and the creation of major basement rocks of its neighborhoods of the Yangtze Block around the Kongling Archean nucleus makes it a favorable explanation for their tectonic connections that, in the whole Yangtze Block there was some tectono-thermal event of ca. 2.0-1.8 Ga, which resulted in the formation of unitive Yangtze basement.

引用

页码：326 / 329

页数：4

共 17 条

[1]

Chen Jiangfeng, 1989, CHINESE SCI BULL, V20, P1572

[2]

*CHIN TEAM CHRON S, 1987, CHRON SCAL CHIN, P148

[3]

FENG DY, 1991, GEOLOGY HUBEI PROVIN, V5, P1

[4]

FU GQ, 1993, ROCKS MINERALS, P5

[5] Contrasting geochemical and Sm-Nd isotopic compositions of Archean metasediments from the Kongling high-grade terrain of the Yangtze craton: Evidence for cratonic evolution and redistribution of REE during crustal anatexis [J].

Gao, S ;

Ling, WL ;

Qiu, YM ;

Lian, Z ;

Hartmann, G ;

Simon, K .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1999, 63 (13-14) :2071-2088

[6]

GAO S, 2000, IN PRESS SCI CHINA D

[7]

JING JS, 1987, J CHANGCHUN COLL GEO, P1

[8] Secular variation in the Nd isotopic composition of Neoproterozoic sediments from the southern margin of the Yangtze Block: Evidence for a proterozoic continental collision in southeast China [J].

Li, XH ;

McCulloch, MT .

PRECAMBRIAN RESEARCH, 1996, 76 (1-2) :67-76

[9]

Ling WL, 1998, CHINESE SCI BULL, V43, P1187

[10]

LING WL, 1998, J CHINA U GEOSCIENCE, V9, P100

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