THERMOCHRONOLOGY OF EARLY PALEOZOIC COLLISIONAL AND SUBDUCTION-COLLISIONAL STRUCTURES OF CENTRAL ASIA
A.V. Travin1,2,3
1V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia
2Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia
3Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russia
Keywords: Коллизионный тектогенез, метаморфические деформации, U/Pb, Ar/Ar изотопное датирование
, термохронология, Центральная Азия, Collisional tectogenesis, metamorphic deformations, U-Pb and Ar-Ar dating, thermochronology, Caledonides, Central Asia
Abstract
The thermochronology of the Early Paleozoic collisional and subduction-collisional systems and blue schist complexes of the Central Asian Orogenic Belt has been reconstructed by the proposed method of total isotope dating. The evolution of these geologic structures is divided into short synchronous stages of active thermal events related to large-scale mantle-crustal magmatism, high-pressure/low-temperature and high-temperature/low-pressure metamorphism, and intense tectonic deformations. The plume activity of different intensities, both in intraoceanic and intracontinental environments, is presumed to be the deep mechanism of synchronization.
|
