Инд. авторы:	Kokh S.N., Shnyukov Y.F., Sokol E.V., Novikova S.A., Kozmenko O.A., Semenova D.V., Rybak E.N.
Заглавие:	Heavy carbon travertine related to methane generation: A case study of the Big Tarkhan cold spring, Kerch Peninsula, Crimea
Библ. ссылка:	Kokh S.N., Shnyukov Y.F., Sokol E.V., Novikova S.A., Kozmenko O.A., Semenova D.V., Rybak E.N. Heavy carbon travertine related to methane generation: A case study of the Big Tarkhan cold spring, Kerch Peninsula, Crimea // Sedimentary Geology. - 2015. - Vol.325. - P.26-40. - ISSN 0037-0738. - EISSN 1879-0968.
Внешние системы:	DOI: 10.1016/j.sedgeo.2015.05.005; SCOPUS: 2-s2.0-84930959428; WoS: 000358094800003;
Реферат:	eng: The Big Tarkhan cold spring is located within the Bulganak zone of mud volcanism in the northern Kerch Peninsula (Crimea). The spring waters mainly have CI-HCO3-Na-Ca chemistry and temperatures from 18 to 23 degrees C. Active travertine deposition at the site produces abundant calcite and minor amounts of siderite, halite, tincalconite, trona, gaylussite, northupite and amorphous iron hydroxides. Calcite contains the impurities of 0.26-2.16 wt.% MgO, up to 0.87 wt.% FeO, 0.15-0.73 wt.% SrO, 0.28-0.98 BaO, up to 0.43 wt.% MnO, and 0.09-0.60 Na2O. Active travertines are depleted in REE (Sigma REE = 2.6-4.8 ppm) compared to the inactive ones. The Kerch travertine calcite shows unusual carbon and oxygen isotope compositions (+8.1 divided by +12.5% VPDB delta C-13 and +10.1 divided by + 12.9%0 VPDB delta O-18). Their isotopic and trace element signatures (including REE patterns) suggest their relation to basinal waters and origin from the organic-rich clayey Maikop Fm., which is the principal source rock of the area. The Big Tarkhan travertine deposits are associated with thermogenic methane production. (C) 2015 Elsevier B.V. All rights reserved.
Ключевые слова:	WATERS; CALCITE; GEOCHEMISTRY; NATIONAL-PARK; MEDITERRANEAN RIDGE; TRACE-ELEMENT; MUD VOLCANOS; FLUID; RARE-EARTH-ELEMENTS; Crimea; Kerch peninsula; Methane generation; Calcite; Mud volcanism; Travertine; MAMMOTH HOT-SPRINGS;
Издано:	2015
Физ. характеристика:	с.26-40