PRECAMBRIAN

作品数：133被引量：978H指数：14
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Rare earth element enrichment in sedimentary phosphorites formed during the Precambrian-Cambrian transition,Southwest China
《Geoscience Frontiers》2024年第2期334-348,共15页Jieqi Xing Yuhang Jiang Haiyang Xian Wubin Yang Yiping Yang Hecai Niu Hongping He Jianxi Zhu 
This work was financially supported by the National Natural Science Foundation of China(Grant Nos.41825003,41921003);Key Research Program of the Institute of Geology&Geophysics,CAS(Grant No.IGGCAS-201901);Guangdong Special Support Program(Grant No.2019TX05L169);Science and Technology Planning Project of Guangdong Province,China(Grant No.2023B1212060048);Youth Innovation Promotion Association CAS(Grant No.2021353).
Numerous sedimentary phosphorites in Southwest China were formed around the Precambrian–Cambrian transition(PC–C),including the upper Ediacaran Doushantuo Formation and lower Cambrian Gezhongwu Formation.The Gezhong...
关键词：REE enrichment Francolite phosphorites Sedimentary reworking Rate of sedimentary 
Detrital Zircon Geochronology and Provenance of Metasedimentary Rocks from the Susong Complex Zone in the Dabie Orogen被引量：3
《Acta Geologica Sinica(English Edition)》2023年第5期1335-1354,共20页WU Zheng YANG Yang LIU Yican ZHANG Chengwei 
financially supported by the National Natural Science Foundation of China(Grant No.42072059)。
The Susong complex zone is a relatively low-grade metamorphic unit located in the southern part of the Dabie orogen and preserves a variety of metasedimentary rocks,mostly with epidote-amphibolite facies.However,their...
关键词：PROVENANCE metasedimentary rocks SHRIMP dating Hf isotope PRECAMBRIAN Susong complex zone 
A New Machine-Learning Extracting Approach to Construct a Knowledge Base: A Case Study on Global Stromatolites over Geological Time
《Journal of Earth Science》2023年第5期1358-1373,共16页Xiaobo Zhang Hao Li Qiang Liu Zhenhua Li Claire E.Reymond Min Zhang Yuangeng Huang Hongfei Chen Zhong-Qiang Chen 
supported by three grants from the National Natural Science Foundation of China (Nos.41821001,41902315,41930322)。
Within any scientific disciplines, a large amount of data are buried within various literature depositories and archives, making it difficult to manually extract useful information from the datum swamps. The machine-l...
关键词：machine learning knowledge base construction STROMATOLITES PRECAMBRIAN knowledge graph 
Paleo-to Mesoproterozoic Tectono-Magmatic Events Recorded in the Huwan Complex from the Dabie Orogen,Central China:Evidence from Petrology and U-Pb Geochronology被引量：1
《Acta Geologica Sinica(English Edition)》2023年第4期1150-1162,共13页ZHU Jiang CHEN Yuqiong CHEN Chao LI Zhanke SHI Xianbin CHEN Song ZOU Yuanbing 
granted by National Natural Science Foundation of China(Grant No.42172103);China Geological Survey(DD20221645);Hubei Geological Bureau(KJ2023-11,KCDZ2022-06,KCDZ2023-01)。
To better understand the Paleo-to Mesoproterozoic tectonic evolution of the Dabie Orogen in the northern margin of Yangtze Block,we present geochronological data for metasedimentary and metavolcanic rocks in the Huwan...
关键词：geochronology detrital zircon Huwan complex PRECAMBRIAN Yangtze block 
Provenance,depositional process,and tectonic setting of gold placer from the Bétaré-Oya Gold District(East-Cameroon,Central Africa)along the Precambrian Sanaga fault
《International Journal of Sediment Research》2023年第4期576-596,共21页Milan Stafford Tchouatcha Arnaud Patrice Kouske Primus Azinwi Tamfuh Epimarc Gildas Tchameni Ngouabe Gerald Chuye Yango 
The Bétaré-Oya Gold District is one of the three gold districts in East Cameroon with varied types of mining.The study site is an open-cast mine located in an alluvial plain.The strata succession globally consists o...
关键词：PROVENANCE Gold placer SEDIMENTOLOGY Geochemistry Betare-Oya Cameroon 
How did Reefs Evolve during the Precambrian-Cambrian Transition?
《Journal of Earth Science》2023年第4期1306-1307,共2页Yangfan Li Fei Li 
supported by NSFC (No.42172136)。
Reefs are considered to be one of the most abundant and diverse niches in the marine ecosystem, and the study of the composition, distribution, and evolution of reefs over geologic time can provide important clues to ...
关键词：CAMBRIAN GEOLOGIC abundant 
Neoproterozoic(750–711 Ma)Tectonics of the South Qinling Belt,Central China:New Insights from Geochemical,Zircon U-Pb Geochronological,and Sr-Nd Isotopic Data from the Niushan Complex
《Acta Geologica Sinica(English Edition)》2023年第1期106-121,共16页WANG Shuo LIU Yunhua YANG Benzhao TAN Le LI Xiaoyan DENG Nan 
supported by the National Natural Science Foundation of China(Grant No.41872219);the Key Research and Development Program of Shaanxi(Grant No.2019SF-245);the Natural Science Foundation of Shaanxi Province(Grant No.2023-JC-YB-222);an integrated research project of Integrated Exploration of China Geological Survey(Grant No.WKZB1911BJM300369/002)。
The Xiejiaba and Fuqiangbei plutons form part of the newly identified Neoproterozoic Niushan complex,which is located in the southern South Qinling belt(SQB).The plutons are compositionally similar,were emplaced at 75...
关键词：geochronology geochemistry magmatism TECTONICS PRECAMBRIAN South Qinling 
Genesis and Geodynamic Significance of Chromitites from the Fuchuan Ophiolite,Southern China,as Evidenced by Trace Element Fingerprints of Chromite,Olivine and Pyroxene
《Acta Geologica Sinica(English Edition)》2023年第1期134-148,共15页WU Jun LIU Ting WANG Fangyue 
granted by the Natural Science Research Program of Colleges in Anhui Province(Grant Nos.2020zk01,KJ2019A1047 and KJ2021A1532);the Domestic Visit Training Program for Outstanding Young Teachers in Colleges in Anhui Province(Grant No.gxgnfx2020168)。
The Fuchuan ophiolite is located in the northeasternmost segment of the Neoproterozoic Jiangnan orogen and consists mainly of harzburgites,with minor dunites,pyroxenite and gabbro veins and dykes.In order to investiga...
关键词：igneous petrology trace elements METASOMATISM BACK-ARC OPHIOLITE PRECAMBRIAN 
Carbonatite Occurrence in Ambaji-Sendra Belt of NW Indian Shield: Evidence of Carbonatitic Magmatism in the Subduction Setting
《International Journal of Geosciences》2023年第1期52-74,共23页Sadaf Siddiqui Sadaf Fatima Tavheed Khan Mohammad Shamim Khan 
The paper represents a new discovery of a late Mesoproterozoic lenticular and discontinuous, carbonatitic body exposed at Basantgarh, Sendra and near the Abu-road area of the Ambaji-Sendra belt of the South Delhi Fold...
关键词：Aravalli Craton Ambaji-Sendra Belt Precambrian Carbonatite Subduction Set-ting 
Precambrian Tectonic Affinity of the Southern Langshan Area, Northeastern Margin of the Alxa Block: Evidence from Zircon U-Pb Dating and Lu-Hf Isotopes被引量：3
《Acta Geologica Sinica(English Edition)》2022年第5期1516-1533,共18页NIU Pengfei QU Junfeng ZHANG Jin ZHANG Beihang ZHAO Heng 
funded by the Basic Scientific Research Fund of the Institute of Geology, Chinese Academy of Geological Sciences (Grant No. J2103);National Key Research and Development Project of the Ministry of Science and Technology of China (Grant No. 2017YFC0601301);the National Natural Science Foundation of China (Grant No. 41972224);the China Geological Survey (Grant No. DD2019004)。
The Alxa Block is the westernmost part of the North China Craton(NCC), and is regarded as one of the basement components of the NCC. Its geological evolution is of great significance for the understanding of the NCC.H...
关键词：zircon U-Pb dating Hf isotop PALEOPROTEROZOIC NEOARCHEAN Diebusige Metamorphic Complex Alxa Block North China Craton 
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