Late Paleozoic granitoid magmatism of Eastern Kazakhstan and Western Transbaikalia: plume model test
- 1 May 2016
- journal article
- Published by GeoScienceWorld in Russian Geology and Geophysics
- Vol. 57 (5) , 773-789
Abstract
We present results of a comparative study of Late Paleozoic granitoids of Eastern Kazakhstan and Western Transbaikalia composing the large Kalba–Narym and Angara–Vitim batholiths. We have established that despite the different geologic history of these regions, granitoid magmatism there proceeded nearly synchronously at the Carboniferous/Permian boundary (330–280 Ma) and was accompanied by mantle magmatism. The regularities of its evolution are considered in terms of the plume model and different stages of interaction of mantle plumes with the lithosphere. The major principles of plume–lithosphere interaction in accretion-collision fold belts have been formulated: (1) Plume-lithosphere interaction results in large-scale melting of sublithospheric mantle, lower lithosphere, and crustal substrates warmed by the preceding orogenic processes; (2) The processes last 30 to 50 Myr and produce large volumes of igneous rocks, mostly granitoids; (3) The sequence of formation of granitoid and basic igneous complexes and the metallogenic specialization can be different and depend on the lithosphere structure and preceding geologic history of the region.Keywords
This publication has 30 references indexed in Scilit:
- Late Paleozoic and Early Mesozoic rare-metal magmatism of Central Asia: Stages, provinces, and formation settingsGeology of Ore Deposits, 2012
- Late Paleozoic oceanic basalts hosted by the Char suture-shear zone, East Kazakhstan: Geological position, geochemistry, petrogenesis and tectonic settingJournal of Asian Earth Sciences, 2012
- The Baikal-Vitim Fold System: Structure and geodynamic evolutionGeotectonics, 2012
- Sequence of magmatic events in the Late Paleozoic of Transbaikalia, Russia (U-Pb isotope data)Russian Geology and Geophysics, 2010
- A thermochemical model of Eurasian Permo-Triassic mantle plumes as a basis for prediction and exploration for Cu-Ni-PGE and rare-metal ore depositsRussian Geology and Geophysics, 2010
- Zircon U–Pb ages and tectonic implications of Paleozoic plutons in northern West Junggar, North Xinjiang, ChinaLithos, 2010
- Thermochronology of the Chernorud granulite zone, Ol’khon Region, Western Baikal areaGeochemistry International, 2009
- Composition of the Continental Crust2003
- Boundary lines within petrologic diagrams which use oxides of major and minor elementsLithos, 1989
- Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronologyEarth and Planetary Science Letters, 1977