Rock salt mass in the Paleoproterozoic sequence of the Onega trough in Karelia (from the Onega parametric well data)

Autor:	K. Yu. Sveshnikova, L. D. Tsvetkov, V. A. Krupenik, V. I. Gorbachev, Oleg Petrov, A. M. Akhmedov, A. F. Morozov, B. N. Khakhaev, G. V. Tarkhanov, Yu. M. Erinchek
Rok vydání:	2010
Předmět:	Proterozoic Archean Trough (geology) Geochemistry Metamorphism Structural basin chemistry.chemical_compound chemistry Earth and Planetary Sciences (miscellaneous) General Earth and Planetary Sciences Carbonate Baltic Shield Fluid inclusions Geology
Zdroj:	Doklady Earth Sciences. 435:1483-1486
ISSN:	1531-8354 1028-334X
DOI:	10.1134/s1028334x10110164
Popis:	A thick (200 m) rock salt mass covering Late Archean granitoids was exposed for the first time in the Early Proterozoic volcanogenic-sedimentary formations in the Onega trough of the east Baltic Shield by the Onega parametric well. The mineral composition of salts, their geochemical features, and the isotopic composition of carbonate carbon and oxygen have been studied. After fluid inclusions present in salts, their metamorphism temperature and isotopic composition of helium and argon were determined. The obtained results give evidence of the fact that rock salts and magnesites associated with them were formed in an evaporate basin with participation of deep crustal processes. The age of the underlying granitoids (2.716 ± 9 Ma) is determined using the Pb—Pb method.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::709c46f40cbe57ba2990fc0660b1293d https://doi.org/10.1134/s1028334x10110164 Zobrazit plný text záznamu Plný text ve formátu PDF