LATE PALEOZOIC EARLY MESOZOIC GRANITOID M AGMATISM IN ALTAI

Authors
VLADIMIROV AG PONOMAREVA AP SHOKALSKII SP KHALILOV VA KOSTITSYN YA PONOMARCHUK VA RUDNEV SN VYSTAVNOI SA KRUK NN TITOV AV
Citation
Ag. Vladimirov et al., LATE PALEOZOIC EARLY MESOZOIC GRANITOID M AGMATISM IN ALTAI, Geologia i geofizika, 38(4), 1997, pp. 715-729
Citations number
30
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Geologia i geofizika → ACNP
ISSN journal
00167886
Volume
38
Issue
4
Year of publication
1997
Pages
715 - 729
Database
ISI
SICI code
0016-7886(1997)38:4<715:LPEMGM>2.0.ZU;2-5
Abstract
New data on composition, radiological age, and tectonic position of RE -specialized granitoids of Altai have been summarized. It has been est ablished that the granite massifs belong to two stages corresponding t o Permian-Triassic and Triassic-Jurassic borders. The granite and alka line-basalt complexes associated with the same shift faults are intima tely joint in time and structure. This suggests rift strike-slip natur e of granite magmas. It has been shown that Altai is one of the wester n sectors of the Asian largest Permian-Triassic rift system, which con tains igneous rocks of the OrhonSelenga trough (Mongolia) and Semeitau volcano-plutonic structure (Eastern Kazakhstan).