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Titolo:
Tectonics of Precambrian basement of the Tarim craton
Autore:
Guo, ZJ; Zhang, ZC; Jia, CZ; Wei, GQ;
Indirizzi:
Peking Univ, Dept Geol, Beijing 100871, Peoples R China Peking Univ Beijing Peoples R China 100871 ijing 100871, Peoples R China CNPC, Tarim Oilfield Co, Korla 841000, Peoples R China CNPC Korla Peoples R China 841000 ield Co, Korla 841000, Peoples R China
Titolo Testata:
SCIENCE IN CHINA SERIES D-EARTH SCIENCES
fascicolo: 3, volume: 44, anno: 2001,
pagine: 229 - 236
SICI:
1006-9313(200103)44:3<229:TOPBOT>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
ND ISOCHRON AGE; DISCOVERY; OPHIOLITE; MOUNTAINS; XINJIANG; ROCKS;
Keywords:
Tarim; Altyn Tagh; craton basement; ophiolite; block collision;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Guo, ZJ Peking Univ, Dept Geol, Beijing 100871, Peoples R China Peking Univ Beijing Peoples R China 100871 0871, Peoples R China
Citazione:
Z.J. Guo et al., "Tectonics of Precambrian basement of the Tarim craton", SCI CHINA D, 44(3), 2001, pp. 229-236

Abstract

The Altyn Tagh Mountain is the main area where the Precambrian basements of Tarim craton are exposed. There are two ophiolitic belts in Altyn Tagh: one belt is exposed in the northern margin of Altyn Tagh whose formation ageis about (829 +/- 60) Ma, the other is situated along the southern margin of Altyn Tagh and has a formation age of about (1449 +/- 270) Ma. This paper proposes a simple tectonic model for the Precambrian basement of Tarim craton established from ophiolites in Altyn Tagh area. The south Tarim block had amalgamated with Qaidam block during about 1400-1500 Ma along the present Altyn fault, while the south Tarim-Qaidam united block was still separated from the north Tarim block by an ocean. The united block of south Tarim and Qaidam collided with north Tarim block along the zone of high positive anomaly of central Tarim, Hongliugou and Lapeiquan in about 800 Ma. So since the Sinian (beginning at 800 Ma) there has been an integrated basement for Tarim craton.

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Documento generato il 23/09/20 alle ore 13:14:39