Crystallization conditions of olivine in dunites the Guli massif, Siberian platform-Reference-Cited by-同舟云学术

Crystallization conditions of olivine in dunites the Guli massif, Siberian platform

Published:2024-04-04 Issue:1 Volume:10 Page:16-31
ISSN:2782-2044
Container-title:МИНЕРАЛОГИЯ (MINERALOGY)
language:
Short-container-title:МИНЕРАЛОГИЯ (MINERALOGY)

Author:

Simonov V.A.¹,Kotlyarov A.V.¹,Sharygin V.V.¹,Vasiliev Yu.R.¹

Affiliation:

1. Institute of Geology and Mineralogy SB RAS

Abstract

Crystallization conditions of olivine in dunites of the Guli massif (Siberian Platform) are established using petrological, geochemical, mineralogical and thermobarogeochemical methods. The formation of olivine and chromite from picrite-meimechite ultramafc magmas was followed by the fractionation of clinopyroxenes from basaltic systems with the formation of residual high-alkaline melts. The calculations in PETROLOG and COMAGMAT programs based on the compositions of inclusions and minerals, as well as using olivine-spinel geothermometer, showed that a magmatic system, which was responsible for the formation of dunites of the Guli massif, evolved during the crystallization of olivine in a wide temperature range of 1520–1250 °C in a magma chamber at a depth of about 17 km.

Publisher

South Urals Federal Research Center for Mineralogy and Geoecology of the Urals Branch of the RAS

Link

https://journal.mineralogy.ru/wp-content/uploads/2024/04/2024_10_1_2.pdf

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