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Titolo:
Sm-Nd isochron age of ophiolite along northern margin of Altun Tagh Mountain and its tectonic significance
Autore:
Guo, ZJ; Zhang, ZC; Wang, JJ;
Indirizzi:
Peking Univ, Dept Geol, Beijing 100871, Peoples R China Peking Univ Beijing Peoples R China 100871 ijing 100871, Peoples R China
Titolo Testata:
CHINESE SCIENCE BULLETIN
fascicolo: 5, volume: 44, anno: 1999,
pagine: 456 - 458
SICI:
1001-6538(199903)44:5<456:SIAOOA>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
XINJIANG;
Keywords:
Altun Tagh Mountain; ophiolite; Sm-Nd isochron age;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
10
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., "Sm-Nd isochron age of ophiolite along northern margin of Altun Tagh Mountain and its tectonic significance", CHIN SCI B, 44(5), 1999, pp. 456-458

Abstract

An ophiolite belt is exposed to the northern edge of Altun Tagh Mountain. Geochronological researches were made on gabbro and basalt. Sm-Nd isochron age of gabbro is (829 +/- 60) Ma, while the age of gabbro mixed basalt is (949 +/- 62) Ma. The dating of Sm-Nd isochron proves that ophiolite formed in (829 +/- 60) Ma, which implies that the northern half of Tarim (or north Tarim Block) had been separated by an ocean from the southern half of Tarimand Qaidam (or south Tarim Block) until (829 +/- 60) Ma. The south Tarim Block could accrete to the north Tarim Block at the beginning of Sinian, thereby forming the north Altun Tagh suture. The Sinian system would be the first cover on the amalgamated Tarim craton.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 12:06:31