Age and source of terrigenous rocks of the turan group of the bureya terrane of the eastern part of the central Asian foldbelt: Results of geochemical (Sm-Nd) and geochronological (U-Pb LA-ICP-MS) studies

被引：16
|
作者：
Sorokin, A. A. [1 ]
Smirnov, Yu V. [1 ]
Kotov, A. B. [2 ]
Kovach, V. P. [2 ]
机构：
[1] Russian Acad Sci, Inst Geol & Nat Management, Far East Branch, Blagoveshchensk 675000, Russia
[2] Russian Acad Sci, Inst Precambrian Geol & Geochronol, St Petersburg 199034, Russia
来源：
DOKLADY EARTH SCIENCES | 2014年 / 456卷 / 02期
基金：
俄罗斯基础研究基金会;
关键词：
EARLY PALEOZOIC AGE; BELT; COMPLEX; EVOLUTION; MASSIF;
D O I：
10.1134/S1028334X14060397
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
According to Sm-Nd isotopic-geochemical studies, the t (Nd(DM)) of the terrigenous rocks of the Turan Group of the Bureya terrane is 1.4-1.5 Ga and their sources are Precambrian rocks and (or) younger effusive rocks, the formation of which is related to the reworking of the Late Precambrian continental crust. The U-Pb LA-ICP-MS geochronological studies indicate dominant Vendian-Cambrian (588-483 Ma) and Late Riphean (865-737 Ma) detrital zircons. Our data point to their accumulation at the beginning of the Paleozoic rather than in the Precambrian as is accepted in modern stratigraphic schemes.
引用
收藏
页码：759 / 763
页数：5
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