Ultrahigh-Pressure Liquation of an Impact Melt

T. G. Shumilova; S. I. Isaenko; B. A. Makeev; A. A. Zubov; S. N. Shanina; Ye. M. Tropnikov; A. M. Askhabov

doi:10.1134/S1028334X18050070

Ultrahigh-Pressure Liquation of an Impact Melt

Authors: Shumilova T.G.¹^,2, Isaenko S.I.¹, Makeev B.A.¹, Zubov A.A.¹, Shanina S.N.¹, Tropnikov Y.M.¹, Askhabov A.M.¹
Affiliations:
1. Institute of Geology, Komi Science Center, Ural Branch
2. Hawaii Institute of Geophysics and Planetology
Issue: Vol 480, No 1 (2018)
Pages: 595-598
Section: Geochemistry
URL: https://journals.rcsi.science/1028-334X/article/view/193072
DOI: https://doi.org/10.1134/S1028334X18050070
ID: 193072

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Abstract

Liquation structures were described in ultrahigh-pressure impact glasses of the Kara astrobleme (Pay-Khoy) with differentiation into the bisilica, aluminosilicate, and ore components for the first time. The sequence of differentiation of mineral phases upon solidification of an ultrahigh-pressure impact melt was established: coesite, silicate glass, augite, aluminosilicate glass of albite composition, and pyrite. The discovered impact glasses are highly resistant to postimpact alterations.