Sulfur isotopes in anhydrite from Badenian (Middle Miocene) salts of the Hrynivka area (Ukrainian Carpathian Foredeep)

Abstract

1 Na tional Acad emy of Sci ences of Ukraine, In sti tute of Ge ol ogy and Geo chem is try of Com bus ti ble Min er als, Naukowa 3A, 79060 Lviv, Ukraine 34 S is +21.4 ± 0.3‰. Those val ues are sim i lar to those of the Neo gene ma rine sulphates. Com par i son to other geo chem ical data (chem i cal com po si tion of the brine con tained in fluid in clu sions and the bro mine con tent in ha lite) sug gests that the Badenian Carpathian Foredeep evaporite ba sin was sup plied pre dom i nately by sea wa ter sol utes where, at dif fer ent stages of salt ac cu mu la tion, the in flu ence of con ti nen tal wa ters with lighter iso to pic com po si tions of dis solved sul phate was im portant. The iso to pic com po si tion of sul phur (d 34 S) of Badenian sea wa ter, cal cu lated on the ba sis of sixty anal y ses of anhydrite re lated to ha lite of the Carpathian re gion, is ap prox i mately +20.3‰, this value be ing sim i lar to the sul phur iso to pic com po sition of pres ent-day sea wa ter. The d 34 S value for Badenian sea wa ter may have been slightly higher if we con sider po ten tial changes of the brine com po si tion of salt-bear ing bas ins caused by in flow of con ti nen tal wa ters en riched in light 32 S iso topes.

Geochemical Data and Fluid Inclusion Study of the Middle Miocene Halite from Deep Borehole Huwniki-1, Situated in the Inner Zone of the Carpathian Foredeep in Poland

“…The chemical composition of primary brine, originating fluid brines of the Huwniki-1 well, corresponded more closely to the geochemical characteristics of brines collected in the eastern segment of the Carpathian Foredeep-e.g., at Hrynivka [62] or Slanic-Prahova [46]. Upon comparison of these results with the results of the chemical composition of modern seawater (Table 1, Figure 7), it was concluded that the former contained slightly fewer sulfate ions.…”

The sulphur and oxygen isotopic composition of anhydrite from the Upper Pechora basin (Russia): new data in the context of the evolution of the sulphur isotopic record of Permian evaporites

“…The fluc tu a tion in the ob served iso tope val ues of anhydrite can be ex plained by chem i cal and bi o log i cal pro cesses dur ing sed i men ta tion and early diagenesis in the evaporite ba sin (Pankina et al, 1985;Shekhunova and Stadnichenko, 2010;Galamay et al, 2014). There fore, frac tion ation in d 34 S and d…”

“…The ex ten sive de velop ment of bac te rial sul phate re duc tion con trib uted to a high alka lin ity of brine (Galamay et al, 2013) and a high con tent of organic mat ter bur ied in sed i ments. For ex am ple, the de fi ciency of such fac tors was the cause of the poor de vel op ment of bac terial sul phate re duc tion in the Badenian sa line bas ins Galamay et al, 2014).…”

Characteristics of diagenesis, isotopic relations and reservoir properties of the Middle Miocene sandstones in the Carpathian Foredeep (Poland and Ukraine)

“…Hence, de tailed sedimentological, pet ro log i cal, min er al og i cal, iso to pic and fluid in clu sion stud ies on the Up per Badenian and Sarmatian rocks from south east ern Po land and west ern Ukraine have been carried out in the last two de cades (e.g., Dziadzio, 2000;Maliszewska et al, 2001aMaliszewska et al, , b, 2004Jasionowski and Peryt, 2010;Jarmo³owicz-Szulc et al, 2011;Koz³owska et al, 2011;Kuberska et al, 2011;Lis and Wysocka, 2012;Jasionowski et al, 2012;Wysocka et al, 2012;Peryt et al, 2014;Galamay et al, 2014). Iso to pic anal y sis and par tic u larly stron tium iso to pic anal y ses have proven a pow er ful chronostratigraphic tool (e.g., McArthur et al, 2001, with ref er ences therein).…”