NDLI: Geochemical evidence for the ophiolitic nature of the gabbros, gabbroanorthosites, and ultramafic rocks of the Gerbikan fragment of the Baladek Massif of the southeastern framing of the North Asian craton

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Russian Journal of Pacific Geology : Volume 4, Issue 4, August 2010

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Geochemical evidence for the ophiolitic nature of the gabbros, gabbroanorthosites, and ultramafic rocks of the Gerbikan fragment of the Baladek Massif of the southeastern framing of the North Asian craton

Content Provider	Springer Nature Link
Author	Sorokin, A. A. Buchko, I. V. Kotov, A. B. Velikoslavinsky, S. D.
Copyright Year	2010
Abstract	The Baladek Massif represents a tectonic block located at the boundary between the SE framing of the North Asian craton and the fold structures of the Galam terrane of the Mongol-Okhotsk fold belt. According to the existing concepts, the rocks of this massif are regarded as Precambrian complexes of the aforementioned craton. This paper reports the results of studying the fragment of the Baladek Massif in the Gerbikan River basin. New geochemical data obtained on the gabbros, gabbroanorthosites, and ultramafic rocks testify to their similarity with typical ophiolite complexes. An underlying complex of metamorphic ultrabasic rocks, a layered complex of pyroxenites and “cumulate” gabbros, gabbroanorthosites, and a complex of isotropic gabbros were distinguished within this fragment. It is highly possible that the basic volcanic rocks and jaspers of the Silurian-Lower Devonian sequences of the Galam segment of the Mongol-Okhotsk fold belt also belong to the inferred ophiolite complex.
Starting Page	418
Ending Page	428
Page Count	11
File Format	PDF
ISSN	18197140
Journal	Russian Journal of Pacific Geology
Volume Number	4
Issue Number	5
e-ISSN	18197159
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2010-10-21
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	gabbro-anorthosites ophiolites southeastern framing of the North Asian craton Baladek Massif Geology
Content Type	Text
Resource Type	Article
Subject	Geology Geophysics Geochemistry and Petrology Oceanography Paleontology Stratigraphy

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