Regional Geological Features and Tectonic Evolution in the Eastern Euroasian Arctic
Li Xuejie
Yao Yongjian
Yang Chupeng
Li Bo
Li Tao
Abstract：Resources in eastern Arctic are quite abundant,however,a number of problems exist due to complicated regional geological structure and low degree of exploration.In this paper,the structure diagram of the study area is compiled,and the regional geological structure and its evolution are presented on the basis of a large collection of regional geological documents.The main tectonic units in the area include Verkhoyansk-Kolyma orogen,microplate of Arctic Alaska-Chukotka,Kolyma-Omolon superterrane,and South Anyui suture.As the open of Amerasia basin in Early Jurassic to Early Cretaceous,the microplate of Arctic Alaska-Chukotka rifted from the north margin of Canada.With the close of the Anui-Anvil (Angayucham) ocean,Alaska-Chukotka microplate collided with Kolyma-Omolon superterrane,resulting in the formation of South Anyui suture.Moreover,Verkhoyansk-Kolyma orogen resulted from collision between Verkhoyansk margin of Siberia continent and Kolyma-Omolon superterrane.
Keywords：regional geologyEuroasian ArcticVerkhoyansk-Kolyma orogenNovosibirsk-Chukchi-Brookian orogenytectonics
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 315-324 )