Origin of the serpentinites in the Lichi melange,eastem Taiwan,China:implication from petrology and geochronology

作     者：Long Huang Wei Geng Zhi-lei Sun Long Huang;Wei Geng;Zhi-lei Sun

作者机构：Qingdao Institute of Marine GeologyQingdao 266071China Laboratory for Marine Mineral ResourcesQingdao National Laboratory for Marine Science and TechnologyQingdao 266071China The Key Laboratory of Gas HydrateMinistry of Land and ResourcesQingdao 266071China 

出 版 物：《China Geology》 (中国地质（英文）)

年 卷 期：2018年第1卷第4期

页      面：477-484页

学科分类：07[理学] 

基　　金：Geological Survey Program of China Geological Survey (DD20160218, DD20160137) the National Natural Science Foundation of China (41506083,41606086,41606087,41606050, 91858208) National Key Research and Development Program of China (2017 YFC0307600,2017YFC0307704) 

主　　题：Lichi melange Serpentinite Arc-continent collision Taiwan U-Pb geochronology 

摘      要：Lichi melange,located in the southern coastal range,eastern Taiwan,China,is a typical tectonic melange of the plate s boundary zone between the Eurasian Plate and the Philippine Sea *** formed during the collision of the Luzon arc with the Eurasian Continent (arc-continent collision).It is composed of sandstone and/or mudstone matrix and many kinds and sizes of rock fragments,including some sedimentary rocks,volcanic rocks and a few metamorphic *** serpentinite is one of the common fragments in the Lichi *** the petrographic characteristics and the zircon U-Pb chronology analyses,protolith of the serpentinite is peridotite,the age is 17.7 ±0.5 *** the tectonic background into account,it is inferred that the serpentinite (serpentinised peridotite)come from the forearc basin (the North Luzon Trough)and was taken into the melange by a second thrust *** origin of the serpentimte in Lichi melange is helpful to understand the formation of the Lichi melange and can provide reliable detailed information for the study of the arc-continent collision orogenic activity in and offshore Taiwan.