Spectroscopic features of ultrahigh-pressure impact glasses of the Kara astrobleme.

ABSTRACT: The state of substances under ultrahigh pressures and temperatures (UHPHT) now raises a special interest as a matter existing under extreme conditions and as potential new material. Under laboratory conditions only small amounts of micrometer-sized matter are produced at a pressure up to 100 GPa and at room temperature. Simultaneous combination of ultrahigh pressures and temperatures in a lab still requires serious technological effort. Here we describe the composition and structure of the UHPHT vein-like impact glass discovered by us in 2015 on the territory of the Kara astrobleme (Russia) and compare its properties with impact glass from the Ries crater (Germany). A complex of structural and spectroscopic methods presents unusual high pressure marks of structural elements in 8-fold co-or

SUBMITTER: Shumilova TG 

PROVIDER: S-EPMC5932052 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature