NDLI: First information about the geology of central antarctica based on study of mineral inclusions in ice cores of the Vostok station borehole

Content Provider	Springer Nature Link
Author	Leichenkov, G. L. Belyavsky, B. V. Antov, A. V. Rodiov, N. V. Sergeev, S. A.
Copyright Year	2011
Abstract	Study of mineral inclusions in the basal part of the central Antarctic ice sheet from the borehole at the Vostok station was carried out. Mineral inclusions were trapped during freezing of the subglacial Lake Vostok water on the base of the glacier, when it crossed a shallow coastal area. It is established that the mineral inclusions are aggregates consisting mainly of clay minerals and quartz up to 150 microns. Crystals of aragonite and sulfides detected in the inclusions may indicate the presence of modern hydrothermal activity beneath the ice. Small (up to 4.5 mm) fragments of siltstone and aleuropelite in some aggregates suggest that lithified clastic sediments are exposed on the western coast of Lake Vostok, where removal of debris material occurred at the expense of exaration. Detrital zircon and monazite, found in siltstones and aleuropelite, suggest the chronology of geological complexes of the provenance area, which is, as is assumed, located in the Gamburtsev mountains in the central Antarctic. The age of the provenance area is 0.8–1.2 to 1.6–2.0 billion years.
Starting Page	1207
Ending Page	1211
Page Count	5
File Format	PDF
ISSN	1028334X
Journal	Doklady Earth Sciences
Volume Number	440
Issue Number	1
e-ISSN	15318354
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2011-10-06
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences

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