THE UPPER CHEGEM CALDERA COMPLEX IN THE NORTH CAUCASUS

Autor:	Peter W. Lipman, A. G. Gurbanov, A. A. Tsvetkov, N. V. Koronovskiy, V. I. Kovalenko, O. A. Bogatikov
Rok vydání:	1992
Předmět:	geography geography.geographical_feature_category Volcano Pluton Rhyolite Geochemistry Caldera Geology Geomorphology
Zdroj:	International Geology Review. 34:131-147
ISSN:	1938-2839 0020-6814
Popis:	The Upper Pliocene-Pleistocene volcanic and plutonic rocks in the basins of the Chegem and Baksan rivers in the North Caucasus are interpreted as parts of a single magmatic system with an age of 2.8-3.0 Ma. At that time, a large caldera was produced in the upper course of the Chegem; layers of its rhyolitic tuffs are of considerable thickness even as far as 50 km from the source. The similarity in composition and age of the rocks constituting the caldera to the intrusive in the Chegem and Baksan basins suggests that they are parts of one large ore-magmatic system, similar in type to the magmatic system of the molybdenum-bearing Questa caldera complex of New Mexico.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::60a243a47fe16ec30faf6ce1dfdf44e2 https://doi.org/10.1080/00206819209465589 Zobrazit plný text záznamu