Mineralogical–geochemical features of travertines of the modern continental hydrotherms: A G-1 well, Tunka depression, Baikal rift zone; Geology of Ore Deposits; Vol. 57, iss. 4

Mineralogical–geochemical features of travertines of the modern continental hydrotherms: A G-1 well, Tunka depression, Baikal rift zone; Geology of Ore Deposits; Vol. 57, iss. 4

Bibliografiske detaljer
Parent link:	Geology of Ore Deposits.— , 2006- Vol. 57, iss. 4.— 2015.— [Р. 331-337]
Institution som forfatter:	Национальный исследовательский Томский политехнический университет (ТПУ) Институт природных ресурсов (ИПР) Кафедра геоэкологии и геохимии (ГЭГХ)
Andre forfattere:	Soktoev B. R. Bulat Rinchinovich, Rikhvanov L. P. Leonid Petrovich, Iljenok (Il'enok) S. S. Sergey Sergeevich, Baranovskaya N. V. Nataliya Vladimirovna, Taysaev T. T. Trofim Tabanovich
Summary:	Title screen The mineral and chemical composition of travertines is studied in the modern discharge zone of the hydrothermal fluids of the Tunka depression, Baikal rift zone. The matrix of travertines is mostly made up of aragonite and calcite, which host about 20 mineral phases of Ag, Au, Pb, Cu, Sb, Sn, Fe, and other chemical elements. Similar rocks have previously been found in areas of modern submarine ore formation and tectonically active structures of the crust (New Zealand, the Cheleken Peninsula and others). Our materials confirm the opinion of some researchers who study modern hydrothermal ore formation in spreading zones that the formation of hydrothermal deposits requires favorable geochemical barriers rather than significant contents of metals in thermal waters. It is shown that microbial communities, concentrating chemical elements playing an important role in formation of ore mineralization in the discharge zones of thermal waters may be these barriers. According to our data, at the territory of the Tunka depression, thermal carbonic waters with endogenic components are delivered to the upper crustal horizons, involved in the existing hydrogeological systems, mixed with waters of active water exchange, and contribute to their chemical composition. This is manifested in the specific elemental and micromineral (Au, Ag, etc.) composition of the limescale of drinking water. In this local discharge zone, an effect of radioactive orphans has been found, which is similar to that established in barite chimneys from the Juan-de-Fuca Ridge.
Sprog:	engelsk
Udgivet:	2015
Fag:	электронный ресурс труды учёных ТПУ
Online adgang:	http://dx.doi.org/10.1134/S1075701515040042
Format:	Electronisk Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=644159

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