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Teleseismic Traveltime Tomography of the Upper Mantle Structure Beneath Southeastern China
Author(s) -
Shi Danian,
LV Qingtian,
Xu Xiaoming,
Zhang Yongqian,
Xu Yao,
Zhao Jinhua,
Gu Yumin
Publication year - 2019
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.14043
Subject(s) - geology , seismology , tomography , china , seismic tomography , mantle (geology) , paleontology , archaeology , geography , medicine , radiology
Southeastern China is often called “a big barn” of mineral resources in China where tungsten, tin, antimony and bismuth reserves rank first in the world, copper, uranium, vanadium, titanium, mercury, and niobium, tantalum and other rare metal reserves rank first in the country, and lead, zinc, gold, silver and platinum group elements are also at the top of the reserve list of our country. Southeastern China plays an important role in the exploration and utilization of mineral resources as well as in the social and economic activities of China. An “explosive” mineralization oocurred there during Mesozoic in an intra-continetal setting, which is thought to be unique and therefore an ideal place to address continental evolution and intra-continental metallogensis. However, restricted by knowledge of the deep, especially mantle, structure of southeastern China, we do not know what tectonic process was responsible for this Mesozoic “explosive” mineralization. One class of models associate the mineralization to subduction of the paleoPacific plate (eg., Zhou XM et al., 2006;Li ZX & Li XH, 2007),but other models attribute it to asthenosphere upwelling and anatexis in an intra-continental setting ( Sh LS,2012;Wang YJ,2013; Li SZ et al., 2011; Zhang GW et al, 2013).