Work

The oldest island-arc granitoids of Chingiz-Tarbagatay region (Eastern Kazakhstan): age substantiation and сomposition affinities

Year: 2024

Type: article

Abstract: The oldest granitoids of Kan-Сhingiz complex in Chingiz-Tarbagatay region of Eastern Kazakhstan, composed of quartz diorites, granodiorites, plagiogranites and granites, are first dated. U-Pb (ID-TIMS and SIMS) geochronological study of granites and plagiogranites is carried out and age estimates 509±2 and 512±3 Ma, approximately corresponding to the boundary of Early and Middle Cambrian, are obtained. These data allow to consider the age of volcanic-sedimentary sequences, host for granitoids, as Early Cambrian. Composition affinities of granitoids of Kan-chingiz complex indicate their formation within ensimatic island arc.

Source: Доклады РОССИЙСКОЙ АКАДЕМИИ НАУК Науки о Земле

DOI: 10.31857/s2686739724050018

Authors: К. Е. Degtyarev, М. V. Luchitskaya, А. А. Тret’yakov, Е. B. Sal’nikova, Y. V. Plotkina

Institutions: Geological Institute, Russian Academy of Sciences, Institute of Precambrian Geology and Geochronology

Language: English

Topic: Geological and Geochemical Analysis

Subfield: Geophysics

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W4405483933

FWCI:

Cites: 11

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Related to: 10