Geochemical and Sm–Nd isotope–geochemical patterns of metavolcanic rocks, diabase, and metagabbroids on the northeastern flank of the South Mongolian–Khingan orogenic belt
- Authors: Smirnov Y.V.1, Sorokin A.A.1
-
Affiliations:
- Institute of Geology and Nature Management, Far East Branch
- Issue: Vol 474, No 1 (2017)
- Pages: 574-578
- Section: Geochemistry
- URL: https://ogarev-online.ru/1028-334X/article/view/189931
- DOI: https://doi.org/10.1134/S1028334X17050178
- ID: 189931
Cite item
Abstract
The first results of geochemical and Sm–Nd isotope–geochemical studies of metavolcanic rocks, metagabbroids, and diabase of the Nora-Sukhotino terrane, the least studied part of the South Mongolian–Khingan orogenic belt in the system of the Central Asian orogenic belt are reported. It is established that the basic rocks composing this terrane include varieties comparable with E-MORB, tholeiitic, and calc-alkaline basalt of island arc, calc-alkaline gabbro-diabase, and gabbroids of island arcs. Most likely, these formations should be correlated with metabasalt and associated Late Ordovician gabbro-amphibolite of the Sukdulkin “block” of the South Mongolian–Khingan orogenic belt, which are similar to tholeiite of intraplate island arcs by their geochemical characteristics.
About the authors
Yu. V. Smirnov
Institute of Geology and Nature Management, Far East Branch
Author for correspondence.
Email: smirnova@ascnet.ru
Russian Federation, Blagoveshchensk, 675000
A. A. Sorokin
Institute of Geology and Nature Management, Far East Branch
Email: smirnova@ascnet.ru
Russian Federation, Blagoveshchensk, 675000
Supplementary files
