典型文献
Stratigraphy and Zircon Provenance of a Late Paleoproterozoic Terrestrial Sequence underlying the Xiong'er Volcanics in the Southern North China Craton
文献摘要：
The late Paleoproterozoic Dagushi Formation comprises a fluvial-lacustrine succession and represents the initial fill of the Xiong'er Basin in the southern North China Craton.Employing integrated outcrop surveys and detrital zircon U-Pb-Hf dating,this study examines the provenance and depositional setting of the Dagushi Formation.Five major depositional facies,including braided channel,distributary channel,subaqueous stream/mouth bar,pro-delta and shallow lake,were identified,based on lithofacies and associations.They were interpreted as representing a braided river delta-lacustrine system.The ages of the last metamorphic event of the basement,covering volcanics and the youngest zircon together constrain a depositional age of ca.1.79 Ga for the Dagushi Formation.Zircon age distributions reveal a provenance change from ca.2.7-2.5 Ga rocks in the lower part,to ca.2.3-1.9 Ga sources in the middle-upper part of the Dagushi Formation.Considering the vertical sedimentology,this provenance change could be induced by the rising water-level caused by a tectonic subsidence.The ca.2.7-2.5 Ga zircons are suggested to be locally sourced from the late Neoarchean-Paleoproterozoic metamorphic basement.The northeast Zhongtiao Mts area(current co-ordinates)is supposed to have appeared as a paleo-uplift and served as a source area for the Paleoproterozoic grains.The Dagushi Formation records an early'underfilled'stage of the Xiong'er Rift.
文献关键词：
中图分类号：
作者姓名：
SUN Fengbo;ZHENG Deshun;ZUO Pengfei;LIU Weiqing
作者机构：
Henan Polytechnic University,Jiaozuo,Henan 454003,China
文献出处：
引用格式：
[1]SUN Fengbo;ZHENG Deshun;ZUO Pengfei;LIU Weiqing-.Stratigraphy and Zircon Provenance of a Late Paleoproterozoic Terrestrial Sequence underlying the Xiong'er Volcanics in the Southern North China Craton)[J].地质学报（英文版）,2022(05):1502-1515
A类：
Volcanics,Dagushi,distributary,volcanics,Zhongtiao,underfilled
B类：
Stratigraphy,Zircon,Provenance,Late,Paleoproterozoic,Terrestrial,Sequence,underlying,Xiong,Southern,North,China,Craton,late,Formation,comprises,fluvial,lacustrine,succession,represents,initial,Basin,southern,Employing,integrated,outcrop,surveys,detrital,Pb,Hf,dating,this,study,examines,provenance,depositional,setting,Five,major,including,braided,channel,subaqueous,stream,mouth,bar,delta,shallow,lake,were,identified,lithofacies,associations,They,interpreted,representing,river,system,ages,last,metamorphic,event,basement,covering,youngest,together,constrain,Ga,distributions,reveal,change,from,rocks,lower,part,sources,middle,upper,Considering,vertical,sedimentology,could,be,induced,by,rising,water,level,caused,tectonic,subsidence,zircons,suggested,locally,sourced,Neoarchean,northeast,Mts,area,current,ordinates,supposed,have,appeared,paleo,uplift,served,grains,records,early,stage,Rift
AB值：
0.548925
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