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《Acta Sedimentologica Sinica》 1991-02
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Volcanic Rock and Radiolarian Silicilith of Wufeng Formation in Lower Yangtze Region

Huang Zhicheng Huang Zhongjin Cheng Zhina (Department of Earth Science, Nanjing University)  
Shallow sea deposit or deep sea deppsit? two different opinions about its origin had been put forward since Wufeng Formation was named in 1931. Researching the cross-section of Wufeng Formation again in Lunshan mountain of Jurong county, Jiangsu Province, in 1989, the authors found profuse Fadiolarians in silicilith and volcanic rock intercalated between silicilith layers, which provides evidences for volcanicism, oringin of the silicilith, and tectonic evolution during Wufeng Age. Thicker than 6.33m which divided into 26 layers, containing abundant radiolarians and graptolithines and spongioid spicules but not benthons, the formation of Upper Ordovician Series is mainly composed of dark thinlayered chertlith and siliceous shale, intercalated more than 97 layers (0.1 to 7cm thick per layer) of yellow mudded volcanic rock as well as a little lava. With the primary composition ranging from neutrality to neutral-basicity to alkaline-neutrality, the volcanic rock consists principally of neutral crystal-vitrie tuff and volcanic dust tuff with a little ignimbrite and andesitic lava and autoclastic- lavaflow- pyroclastic, all of which had illitized, vermiculitized and chloritized.The frequency of volcanic eruption was 8 to 18 times per ma., with the feature of approximately symmetric normal-distribution. According to its thickness and size, the ejecta is of remote origin, and the craters, which spread probably along both grand intraplate extension fault and the top of the uplifted upper mantle, are located at the southeast and the south 300 to 520km or so to Lunshan Mountain, with a little lava from the east dozens of kilometers to Lunshan Mountain.The REE' s geochemical characteristic of volcanic rock is similar to that of neutral extrusive-rock related to continental-crust-derived alkaline femic rock, which indicates that the volcanic eruption originated from continental-crust-estension of the continental margin. With a few clastic spongioids and other powdered organisms and a little microcrysialline quartz, the content of the radiolarians and their fragments is about 20-30% in the radiolarian-chertlith.Beside illite, its main component, the siliceous shale-contains a small amount of volcanic-glass pieces and volcanogenic heavy minerals.the silicilith comprises trace elements, such as plentiful Ba, Ti and P as well as poor Sr and Ca, some of which change regularly with the sequence of strata. And the higher the content of radiolarians and silica, the larger the quantity of δ18O (SMOW) in the rocks.The difference of temperature calculated by δ18O is 30℃ .So the silicilith was deposited under the condition of the shallow-sea gradually turned into deep sea and the volcanic rock was decomposed, therefore, SiO2in the seawater was considerably increased, and siliceous organisms such as radiolarians, remains of which composed siliceous ooze, reproduced in large amounts.Consequently, opal-A in the skeletons of the radiolarians and other siliceous organ. isms was dissloved and precipitated again, and then crystallized into opal-CT lepispheres which, by burial diagenesie, became fibrous chalcedony and microcrystalline quartz and the formation of bedded chertlith was followed.The cause of this formation is called volcano-organogenic mechanism. The distributive pattern of the radiolarian-silici-lite and the intercalated volcanic rock layers as well as all other deposited substances in the whole region at Wufeng Age prove that, during Late Ordovician epoch, the continental-plate-margin of Lower Yangtzi was extended so fiercely that its crust was thinned to sink and the sea water got deeper and deeper from the east to the west, which formed the marine tectonic and geographical framework put in order from tidal flat to shelf to continental- slope ( including depression) to deep sea basin. And richly distribution radiolarian-silicilith in the vast west area of Maoshan Mountain to Yangzhou line became a blocked and uncompensated small deep sea basin and extended far westernly.The collision between North China Plate and Yangtzi Plat
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【References】
Chinese Journal Full-text Database 10 Hits
1 Fang Yiting Bian Lizeng Yu Jianhua Feng Houngzhen (Department of Earth Sciences,Nanjing University);Sedimentary Environment Pattern of Yangtz Plate in Wufeng Age of Late Ordovician[J];Acta Sedimentologica Sinica;1993-03
2 Li Wenhou (Department of Geology,Northwest University\ Xian\ 710069);Petrological Characteristics of Radiolarian Silicalite and Its Geological Significance of Lower Silurian in the Hanzhong Region[J];ACTA SEDIMENTOLOGICA SINICA;1997-03
3 FENG Bao-hua( Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, 100037 );SPECIAL FUNCTION OF THE NUCLEAR LOG AND THE APPLICATION OF ITS DATA TO THE REGIONAL GEOLOGIC SURVEY AND STRATIGRAPHIC STUDY——A NEW METHOD FOR THE STRATIGRAPHIC STUDY[J];Journal of Stratigraphy;2005-S1
4 DENG Yi-nan~ 1) ,WANG Yue~ 1) ,CHEN Hong-de~ 2) ,HOU Ming-cai~ 2) ,ZHU Jiang~ 1) and ZHAO Ming-sheng~ 1) 1) School of Resources and Environments,Guizhou University,Guiyang 550003;2) Institute of Sedimentology,Chengdu University of Technology,Chengdu 610059;BIVALVES AND GASTROPODS FROM THE ORDOVICIAN GUANYINQIAO MEMBER OF THE WUFENG FORMATION IN TONGZI,GUIZHOU,SOUTH CHINA,AND THEIR ECOLOGICAL SIGNIFICANCE[J];Journal of Stratigraphy;2010-03
5 ZHAO Mingsheng1),WANG Yue1),CHEN Hongde2),YIN Haijian1),HOU Mingcai2)1) School of Resources and Environments,Guizhou University,Guiyang,550003;2) Institute of Sedimentology,Chengdu University of Technology,Chengdu,610059;Contemporaneous Deformed Structures in Ordovician Wufeng Formation in Southern Chongqing and Northern Guizhou,and Its Geological Significances[J];Geological Review;2010-02
6 XU Lunxun, XIAO Chuantao, GONG Wenping, HE Youbi Geosciences College of Yangtze University, Jingzhou, Hubei, 434023;A Study on the Deep-sea Sediment of the Guanyinqiao Memberof the Upper Ordovician Wufeng Formation in the Yangtze Area[J];Acta Geologica Sinica;2004-06
7 Wu Haoruo Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029;TECTONOPALAEOGEOGRAPHIC ANALYSIS OF THE GEOLOGIC PROBLEMS RELATED TO OPHIOLITIC BELT IN NORTHEASTERN JIANGXI PROVINCE[J];Journal of Palaeogeography;2003-03
8 Gao Zhenzhong 1 He Youbin 1 Li Luozhao 1 Qing Chongwen 2Xiao Mingguo 1 Cheng Sihong 1 Zhang Wencheng 1 Liu Weiwei 1 1 College of Geoscience,Yangtze University, Jingzhou 434023,Hubei2 Jingzhou Institute of New Territory Exploration, Exploration & Production Research Institute, SINOPEC, Jingzhou 434100,Hubei;Genesis of the Guanyinqiao Member of Upper Ordovician Wufeng Formation in southern China:"Shallow water shelly facies" or deep-water allogenic deposition?[J];Journal of Palaeogeography;2008-05
9 Xiao Chuantao, Jiang Yanwen, Zhu Zhongde, Li Yibin (Jianghan College of petroleum, Jiangsha, Hubei, 434102) pan Yuntang (Graduate School, Academia Sinica, Beijing, 100039);A STUDY ON ORDOVICIAN SEQUENCE STRATIGRAPHY IN YICHANG DISTRICT, HUBEI PROVINCE AND SEDIMENTARY ENVIRONMENT OF THE WUFENG FORMATION IN YANGTZE AREA[J];GEOLOGICAL JOURNAL OF UNIVERSITIESF;1996-03
10 Wang Chuanshang Wang Xiaofeng Chen Xiaohong (Yichang Institute of Geology and Mineral Resources,Yichang 443003);RELATIONSHIPS BETWEEN RHABDOSOME COMPLICATION AND ORDOVICIAN SEA LEVEL CHANGES[J];GEOLOGY AND MINERAL RESOURCES OF SOUTH CHINA;2000-01
China Proceedings of conference Full-text Database 1 Hits
1 Wu Haoruo Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029;TECTONOPALAEOGEOGRAPHIC ANALYSIS OF THE GEOLOGIC PROBLEMS RELATED TO OPHIOLITIC BELT IN NORTHEASTERN JIANGXI PROVINCE[A];[C];2003
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 TANG Jia-fu 1, YAO Sui 2(1 Reginal Geological Survey of Anhui Province,Hefei 230001,China;2 The Museum of Science and Technology of Anhui Province,Hefei 230088,China);ON SEVERAL SIGNIFICANT FUNDAMENTAL GEOLOGICAL ISSUES CONCERNED WITH ANHUI AND ITS NEIGHBOURING AREA[J];GEOLOGY OF ANHUI;2000-02
2 Thong Yuming ( Changsha Institute of Geotectonics, Academia Sinica ) Zhou Zuxun ( Institute of Survey and Design, Huangshi, Hubei );PRELIMINARY STUDY ON THE ORIGIN OF THE RADIOLARIA- BEARING SILICEOUS ROCKS OF MAOKOU FORMATION (LOWER PERMIAN), SOUTHEAST HUBEI PROVINCE[J];Acta Sedimentologica Sinica;1985-02
3 Huang Zhichen Zhu Sizhao ( Nanjing University );ORIGIN OF IRON-BEARING NON-SKELETAL ONCOLITE AND ITS ROLE IN CONCENTRATING IRON IN ORDOVICIAN LIMESTONE, ANHUI PROVINCE[J];Acta Sedimentologica Sinica;1987-02
4 Xia Bangdong Lü Hongbo Xiong Binhui He Yongming Hu Baosheng ( Department of Geology, Nanjing University );SPIRODESMOS KAIHUAENSIS IN THE UPPER ORDOVICIAN FLYSCH IN THE KAIHUA COUNTY, WEST PART OF ZHEJIANG PROVINCE[J];Acta Sedimentologica Sinica;1987-02
5 Tong Zaisan (Department of Geology, Lanzhou University);DISCOVERY OF PERMIAN VOLCANICLASTIC ROCK IN SHANDAN COALFIELD, GANSU AND ITS MASTER CHARACTER ISTICS[J];Acta Sedimentologica Sinica;1988-01
6 Xia Bangdong Lu Hongbo (Department of Geology,Nanjing University);A STUDY ON THE ENVIRONMENT OF UPPER ORDOVICIAN FLYSCH IN WESTERN ZHEJIANG AND SOUTHERN ANHUI PROVINCES AND A SHORT COMMENT ON THE APPLICATION OF BOUMA' S SEQUENCE[J];Acta Sedimentologica Sinica;1988-04
7 Feng Baohua (Institute of Mineral Deposits, Chinese Academy of Ceological Sciences);CARBONIFEROUS-PERMIAN TONSTEINS FORMED BY HYDROLYTIC REFORMATION OF VOLCANIC ASH SEDIMENTS IN NORTHERN CHINA[J];Acta Sedimentologica Sinica;1989-01
8 Cheng Hongde Zeng Yunfu Li Xiaoquan (Chengdu College of Geology) (The Regional Survey Brigade of Guangxi);EVOLUTION OF THE SEDIMENTATION AND TECTONICS OF LATE PALEOZOIC DANCHI BASIN[J];Acta Sedimentologica Sinica;1989-04
9 Mei Zhichao Lu Huanyong Li Wenhou (Department of Geology, Northwest University, Xi'an);Bedded Radiolarian Cherts in the Ordovician of Weibei, Shaanxi[J];Acta Sedimentologica Sinica;1992-02
10 Dongye Maixing (Geological Institute for Chemical Minerals Product, Ministry of Chemical Industry, Zhuozhou, Heibei);Progress of the Phosphorite Research and Its Theory of Biomineralization[J];Acta Sedimentologica Sinica;1992-03
【Secondary References】
Chinese Journal Full-text Database 10 Hits
1 HE Wei-hong WANG Xiao-feng BU Jian-jun (Centre for Stratigraphy and Paleontology, China Geological Survey, Yichang Hubei 443003);The Eustatic Cycles and the Depth of Water Mass of the Latest Ordovician Wufengian in the Yangtse Basin[J];Acta Sedimentologica Sinica;2002-03
2 XIAO Chuan-tao~ 1,2 GONG Wen-ping~ 2 LUO Shun-she~ 2 HE You-bin~ 2 LI Yi-bin~ 2 (1. China University of Geosciences, Wuhan 430074; 2. Geosciences College of Yangtze University, Jingzhou Hubei 434102);Ordovician Cephalopoda Biofacies and Their Provincialization in the South China[J];Acta Sedimentologica Sinica;2006-02
3 ZHAO Wen-jin 1),WANG Shi-tao 2),WANG Jun-qing 1)and ZHU Min 1)1)Laboratory of Evolutionary Systematics of Vertebrates,Institute of Vertebrate Paleontology and Paleoanthropology,Chinese Academy of Sciences,Beijing 100044;2)Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037;THE SUBDIVISION AND CORRELATION OF THE SILURIAN FISH-BEARING STRATA AND CALEDONIAN MOVEMENT IN KALPIN AND BACHU REGIONS,THE TARIM BASIN,XINJIANG[J];Journal of Stratigraphy;2009-03
4 DENG Yi-nan~ 1) ,WANG Yue~ 1) ,CHEN Hong-de~ 2) ,HOU Ming-cai~ 2) ,ZHU Jiang~ 1) and ZHAO Ming-sheng~ 1) 1) School of Resources and Environments,Guizhou University,Guiyang 550003;2) Institute of Sedimentology,Chengdu University of Technology,Chengdu 610059;BIVALVES AND GASTROPODS FROM THE ORDOVICIAN GUANYINQIAO MEMBER OF THE WUFENG FORMATION IN TONGZI,GUIZHOU,SOUTH CHINA,AND THEIR ECOLOGICAL SIGNIFICANCE[J];Journal of Stratigraphy;2010-03
5 RONG Jia-yu,CHEN Xu, ZHAN Ren-bin, FAN Jun-xuan, WANG Yi, ZHANG Yuan-dong, LI Yue, HUANG Bing, WU Rong-chang and WANG Guang-xu State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008; LIU Jian-bo Department of Geology, Peking University, Beijing 100871;NEW OBSERVATION ON ORDOVICIAN-SILURIAN BOUNDARY STRATA OF SOUTHERN TONGZI COUNTY,NORTHERN GUIZHOU,SOUTHWEST CHINA[J];Journal of Stratigraphy;2010-04
6 XIAO Chuan-tao,ZHU Zhong-de,LI Xiang-ming(Department of Geosciences,Jianghan Petroleum Institute,Jingz hou434102,Hubei,China);Sequence stratigraphy of Lower Ordovician reef-bearing strata in the Middle Yangtze platform[J];Chinese Geology;2003-03
7 ZHANG Ting-shan, JIANG Zhao-yong, CHEN Xiao-hui(Southwest Petroleum University, Chengdu 610500, Sichuan, China);Characteristics and controlling factors of development of Paleozoic reef-banks in the Sichuan basin[J];Geology in China;2008-05
8 HE Wei-hong1, BU Jian-jun2 (1.Faculty of Earth Sciences, China University of Geosciences, Wuhan430074, China; 2.Yichang Institute of Geology and Mineral Resources, Yichang443003, China);Distribution of Latest-Ordovician Shell Fauna in Yangtze Basin and Its Paleogeographic Significance[J];;2003-03
9 SU Wen-bo1, LI Zhi-ming2, Frank R. Ettensohn3, Markes E. Johnson4, Warren D. Huff5, WANG Wei1, MA Chao1, LI Lu1, ZHANG Lei1, ZHAO Hui-jing11.School of Earth Sciences and Resources, China University of Geosciences, Beijing100083, China2.Faculty of Earth Sciences, China University of Geosciences, Wuhan430074, China3.Dept. of Earth & Environ. Sciences, University of Kentucky, Lexington, KY40506-0053, USA4.Dept. of Geosciences, Williams College, Williamstown, MA01267, USA5.Dept. of Geology, University of Cincinnati, Cincinnati, OH45221-0013, USA;Distribution of Black Shale in the Wufeng-Longmaxi Formations (Ordovician-Silurian),South China: Major Controlling Factors and Implications[J];Earth Science(Journal of China University of Geosciences);2007-06
10 HE Weihong WANG Xiaofeng BU Jianjun (Center for Stratigraphy and Palaeotology, China Geological Survey, Yichang, Hubei,443003);Sea-level Change of the Central Yangtze Sea Basin in the Late Ordovician Wufengian Period[J];Acta Geosicientia Sinica;2003-01
China Proceedings of conference Full-text Database 1 Hits
1 Jiang Yuehua Ye Zhizheng Yue Wenzhe(Nanjing Institute of Geology and Mineral Resources, GAGS);Characteristics and Origin of Iron-Manganese Nodule of the Middle Ordovician Platform Margin in Anhui[A];[C];1999
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