Petrological characteristics of mafic-ultramafic intrusions of the Khangay upland (Mongolia)

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Abstract

New data on the petrology and geochemistry of lithologies from the mafic-ultramafic massifs of Oortsog, Dulaan, Mankhan and Yamat (Khangay upland of the Central Asian Orogenic Belt, CAOB) are presented. The petrological characteristic of the massifs, together with their inherent positive anomalies of Cs, Sr and negative anomalies of Ta, Nb, indicates that magmatism stemmed from two different mantle source regions - a mantle plume interacting with the lithospheric mantle portions of a subduction zone. The received characteristics are comparable with the data of massifs of East Kazakhstan and Western Baikal described earlier. The aim of study is identification of typomorphic features of these massifs to understand the type of mantle magmatism and geodynamic environment of region.

Original languageEnglish
Title of host publicationLIFE WITH ORE DEPOSITS ON EARTH, PROCEEDINGS OF THE 15TH SGA BIENNIAL MEETING, 2019, VOLS 1-4
PublisherSOC GEOLOGY APPLIED MINERAL DEPOSITS-SGA
Pages561-564
Number of pages4
Publication statusPublished - 2019
Event15th SGA Biennial Meeting on Life with Ore Deposits on Earth - Glasgow
Duration: 27 Aug 201930 Aug 2019

Conference

Conference15th SGA Biennial Meeting on Life with Ore Deposits on Earth
CityGlasgow
Period27.08.201930.08.2019

Keywords

  • MANTLE

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