首页|The absolute paleoposition of the North China Block during the Middle Ordovician
The absolute paleoposition of the North China Block during the Middle Ordovician
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万方数据
维普
Present-day hot spots and Phanerozoic large igneous provinces (LIPs) and kimbedites mainly occur at the edges of the projections of Large Low Shear Wave Velocity Provinces (LLSVPs) on the earth's surface.If a plate contains accurately dated LIPs or kimberlites,it is possible to obtain the absolute paleoposition of the plate from the LIP/kimberlite and paleomagnetic data.The presence of Middle Ordovician kimberlites in the North China Block provides an opportunity to determine the absolute paleoposition of the block during the Middle Ordovician.In addition to paleobiogeographical information and the results of previous work on global plate reconstruction for the Ordovician Period,we selected published paleomagnetic data for the North China Block during the Middle Ordovician and determined the most reasonable absolute paleoposition of the North China Block during the Middle Ordovician:paleolatitude of approximately 16.6°S to 19.1°S and paleolongitude of approximately 10°W.The block was located between the Siberian Plate and Gondwana,close to the Siberian Plate.During the Cambrian and Ordovician periods,the North China Block may have moved toward the Siberian Plate and away from the Australian Plate.
North China BlockMiddle OrdovicianAbsolute paleopositionPlume Generation Zone
WANG HongHao、LI JiangHai、ZHANG HuaTian、XU Li、LI WeiBo
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Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, School of Earth and Space Sciences, Peking University, Beijing 100871, China
This study was supported by the National Basic Research Program of China
NETL
NSTL
万方数据
维普
