Geologic structure and composition of Munilkan massif Verkhoyansk-Kolyma orogenic area
| Autor: | V. A. Trunilina, S. P. Roev, A. I. Zaitsev |
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| Jazyk: | English<br />Russian |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Литосфера, Vol 0, Iss 2, Pp 81-102 (2015) |
| Druh dokumentu: | article |
| ISSN: | 1681-9004 2500-302X |
| Popis: | This article presents the results of detailed study of geologic structure and composition of Munilkan massif of the Main batholith belt of Verkhoyansk-Kolyma mesozoides (Tas-Khayakhtakh Ridge). Granites include numerous xenoblocks of gabbro, dolerites and subvolcanic granites they are intruded by fissure bodies and dikes of leucogranites-alaskites and trachybasalts-trachydolerites and have neutral ratio with gabbro-diorites, diorites and monzonites, which were formed during interaction of basite and granite magma. Igneous activity occurred at some stages, from Oxfordian to the end of the Early Cretaceous (157-119 Ma). Composition parameters of magmatic rocks correspond to formation of early derivatives in island-arc conditions, late derivatives - in post-collisional and intraplate conditions, that is covers the entire cycle of geologic development of Verkhoyansk-Kolyma mesozoides. |
| Databáze: | Directory of Open Access Journals |
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