典型文献
Mid-Cretaceous Hainan back-arc basin:record of the sustained extension of South China margin
文献摘要：
The continued subduction of the Pacific oceanic lithosphere during the Jurassic-Cretaceous time formed a large magmatic province as"Basin and Range"at the South China Block.However,the timing and mechanisms of such a huge rifting and magmatism belt are still controversial.Here we present new petro-logical,sedimentological and geochemical analyses for the Cretaceous Lumuwan Formation and coeval intruded mafic dykes under the robust age constrain in Hainan Island.Our results show that the mid-Cretaceous Lumuwan Formation was a typical lacustrine stratigraphic sandwich that accumulated in an intracontinental back-arc extensional basin.The Hainan mafic dykes(-108-93 Ma)were probably sourced from asthenospheric and lithospheric mantle which were metasomatized by subducted oceanic sediments in a back-arc extension of the continental lithosphere.The timing of the NW-SE-directed back-arc extension in the Hainan Basin has been constrained as 108-93 Ma and played a significant role in the formation of Basin and Range-type tectonics and landscape evolution in the South China.
文献关键词：
中图分类号：
作者姓名：
Yan Chen;Jun Meng;Hao Liu;Tao Liu;Ze-Ying Zhao
作者机构：
State Key Laboratory of Biogeology and Environmental Geology,School of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing,100083,China;School of Ocean Sciences,China University of Geosciences(Beijing),Beijing,100083,China
文献出处：
引用格式：
[1]Yan Chen;Jun Meng;Hao Liu;Tao Liu;Ze-Ying Zhao-.Mid-Cretaceous Hainan back-arc basin:record of the sustained extension of South China margin)[J].古地理学报（英文版）,2022(04):584-600
A类：
Lumuwan
B类：
Mid,Cretaceous,Hainan,back,arc,basin,record,sustained,South,China,margin,continued,subduction,Pacific,oceanic,lithosphere,during,Jurassic,formed,large,magmatic,province,Basin,Range,Block,However,timing,mechanisms,such,huge,rifting,magmatism,belt,are,still,controversial,Here,present,new,petro,sedimentological,geochemical,analyses,Formation,coeval,intruded,mafic,dykes,under,robust,age,Island,Our,results,show,that,mid,was,typical,lacustrine,stratigraphic,sandwich,accumulated,intracontinental,extensional,Ma,were,probably,sourced,from,asthenospheric,lithospheric,mantle,which,metasomatized,by,subducted,sediments,NW,SE,directed,has,been,constrained,played,significant,role,formation,type,tectonics,landscape,evolution
AB值：
0.617044
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