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An Upper Triassic Hexacoral from the Yungching District, Hsikang

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地质学报 1940年第Z1期 269-274+387页

作者： Y.S.cHI c.j.peng geological survey of china

During his reconnaissance survey of the Takuangshan iron ore deposit ofYungching, Hsikang, in the autumn of 1939, c. j. peng collected specimens offossil coral from the Triassic limestone of that region. The material ... 详细信息

关键词： An Upper Triassic Hexacoral from the Yungching District Hsikang

A Preliminary Study of Progressive Metamorphism in the country around Tienwan,Sikang

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地质学报 1946年 129-161页

作者： c. j. peng geological survey of china

It is well-known that a fairly large tract of country of Sikang (chineseTibet) is occupied by various kinds of metamorphic rocks; but our knowledgeof their nature and origin is as yet far from complete. In thi8 connex... 详细信息

关键词： A Preliminary Study of Progressive Metamorphism in the country around Tienwan,Sikang

Genesis of the Maku Hematite Deposit, Weining, Kueichou

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地质学报 1942年第Z1期 169-175页

作者： c. j. peng (geological survey of china)

INTRODUcTION It was not until c: c. Wang’s work’ was carried out in 1939 that the Maku iron deposit of the Weining district, western Kueichou (Fig. 3), has become known among mining engineers and economic geologists... 详细信息

关键词： Kueichou Weining

Notes on the Bauxite Deposits of Kueichou,with Special Reference to Their Variation in Quality

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地质学报 1944年第Z1期 98-114页

作者： c. j. peng (geological survey of china)

The discovery of bauxite from a number of places in Kueichou in 1941 made by Dr. S. S. Yoh and his colleagues [13] is of economic as well as scientific significance. In the following year, the writer, in collaboration with Dr. c. Y. Li, had an opportunity of making an investigation of the three deposits found, namely, Yunwushan;, Wangbi;and Wangkuan;. Though a

关键词： Notes on the Bauxite Deposits of Kueichou,with Special Reference to Their Variation in Quality

On the Occurrence of Pre-Sinian Volcanic Series and Related Intrusive Rocks in the Vicinity of Fulin,Sikang

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地质学报 1944年第Z1期 76-97页

作者： c. j. peng and H. cHU (geological survey of china)

Ⅰ. INTRODUcTION During the geological reconnaissance in E Sikang in 1941-1942 the writers observed an old acid volcanic series, together with related intrusive rocks, in the southeastern part of the province, mainly in the valley of the Tatuho （Tungho）;. In 1930, the extrusive rocks of this valley between Tsutati （Anshunchang）;and chinkouho

关键词： On the Occurrence of Pre-Sinian Volcanic Series and Related Intrusive Rocks in the Vicinity of Fulin,Sikang

On the Occurrence of Zellia from the Maping Limestone of chengkung,central Yunnan

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地质学报 1949年第Z1期 105-109+178页

作者： j. c SHENG (geological survey of china)

INTRODUcTIONThe specimens described in the present paper were collected in 1939 by the late Mr. T. Y. Hsu and Mr. c. S. Pien from the Maping limestone exposed E of Tuikoshan, chengkung district, central Yunnan. All specimens belong to Zellia, a subgenus of Pseudoschwagerina; three forms may be referred to known subspecies while two are new.

关键词： On the Occurrence of Zellia from the Maping Limestone of chengkung,central Yunnan

An accurately delineated Permian-Triassic Boundary in continental successions

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Science china Earth Sciences 2007年第9期50卷 1281-1292页

作者： YIN HongFu1, YANG FengQing2, YU jianXin2, peng YuanQiao1, WANG ShangYan3 & ZHANG SuXin1 1 Laboratory of Biological and Environmental Geology, china University of Geosciences, Wuhan 430074, china 2 State Key Laboratory of geological Process and Mineral Resources, china University of Geosciences, Wuhan 430074, china 3 geological survey of Guizhou Province, Guiyang 550011, china Laboratory of Biological and Environmental Geology China University of Geosciences Wuhan China State Key Laboratory of geological Process and Mineral Resources China University of Geosciences Wuhan China geological survey of Guizhou Province Guiyang China

The Permian-Triassic Boundary Stratigraphic Set (PTBST), characteristic of the GSSP section of Meishan and widespread in marine Permian-Triassic Boundary (PTB) sequences of South china, is used to trace and recognize the PTB in a continental sequence at chahe (Beds 66f―68c). Diversified Permian plant fossils extended to the PTBST, and a few relicts survived above that level. Sporomorphs are dominated by fern spores of Permian nature below the PTBST, above which they are replaced by gymnosperm pollen of Triassic aspect. In the nearby Zhejue Section, the continental PTBST is charac- terized by the fungal 'spike' recorded in many places throughout the world. The boundary claybeds (66f and 68a,c) of the PTBST are composed of mixed illite-montmorillonite layers analogous with those at Meishan. They contain volcanogenic minerals such as β quartz and zircon. U/Pb dating of the upper claybed gives ages of 247.5 and 252.6 Ma for Beds 68a and 68c respectively, averaging 250 Ma. In con- trast to the situation in Xinjiang and South Africa, the sediment sequence of the Permian-Triassic tran- sition in the chahe section (Beds 56―80) become finer upward. Shallowing and coarsening upward is not, therefore, characteristic of the Permian-Triassic transition everywhere. The occurrence of relicts of the Gigantopteris Flora in the Kayitou Fm. indicates that, unlike most marine biota, relicts of this pa- leophytic flora survived into the earliest Triassic. It is concluded that Bed 67 at chahe corresponds to Bed 27 at Meishan, and that the PTB should be put within the 60-cm-thick Bed 67b④, now put at its base tentatively. This is the most accurate correlation of the PTB in continental facies with that in the marine GSSP.

关键词： Permian-Triassic Boundary, terrestrial sequence, U-Pb age, chahe section, accuracy

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Zircon LA-IcPMS study and petrogenesis simulation of Dahuabei pluton in the Wulashan area,Inner Mongolia

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Progress in Natural Science:Materials International 2009年第12期19卷 1727-1737页

作者： Dapeng Li~(a,b),Yuelong chen~(a,*),Liemeng chen~c,Zhong Wang~d,jinbao Liu~d a School of Earth Sciences and Resources,china University of Geosciences(Beijing),Beijing 100083,china b State Key Laboratory of geological Process and Mineral Resources,china University of Geosciences,Wuhan 430074,china c State Key Laboratory of Ore Deposit Geochemistry,Institute of Geochemistry,chinese Academy of Sciences,Guiyang 550002,china d geological survey Institute of Inner Mongolia,Hohhot 010010,china School of Earth Sciences and Resources China University of Geosciences (Beijing) Beijing 100083 China State Key Laboratory of geological Process and Mineral Resources China University of Geosciences Wuhan 430074 China State Key Laboratory of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China geological survey Institute of Inner Mongolia Hohhot 010010 China

Dahuabei pluton in the Wulashan area,Inner Mongolia,is an alkaline and peraluminous granitic ***-IcPMS U-Pb dating of zircons indicates that this pluton crystallized at 330±10 *** pluton did not experience apparent zircon *** consistent temperatures between Zr saturation(765℃) and the average zircon-rutile Ti equilibrium(780℃),together with zircon ages and their cL images,indicated that there were no inherited zircons in this *** the simulation of the dry-system crystallization process of magma cooling at 200 MPa and 1100-709℃,the phase diagram and composition evolution tendency of different phases were *** magma reached its liquidus at 1069℃.Sanidine was the first crystallized phase;at 709℃the residual magma was less than 4%,and the range of 1069-719℃should be the most suitable approach to the real *** is shown that at least some part of the pluton underwent such isobaric equilibrium crystallization processes during its crystallization.

关键词： Dahuabei pluton Petrogenesis simulation Geochemistry Zircon LA-IcPMS

Dinosaur eggs and dinosaur egg-bearing deposits(Upper cretaceous) of Henan Province,china:Occurrences,palaeoenvironments,taphonomy and preservation

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Progress in Natural Science:Materials International 2009年第11期19卷 1587-1601页

作者： Xinquan Liang~(a,*),Shunv Wen~(a,b),Dongsheng Yang~a,Shiquan Zhou~c,Shichong Wu~d a Key Laboratory of Isotope Geochronology and Geochemistry,Guangzhou Institute of Geochemistry,chinese Academy of Sciences, Guangzhou 510640,china b Graduate School of the chinese Academy of Sciences,Beijing 100039,china c First Geology and Exploration Institute,Henan Bureau of Geology,Mineral Exploration and Development Supervision,Nanyang 473003,china d Zhuzhou Institute of Mineral Resources and geological survey,Hunan geological survey,Zhuzhou 412007,china Key Laboratory of Isotope Geochronology and Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China Graduate School of the chinese Academy of Sciences Beijing 100039 China First Geology and Exploration Institute Henan Bureau of Geology Mineral Exploration and Development Supervision Nanyang 473003 China Zhuzhou Institute of Mineral Resources and geological survey Hunan Geological Survey Zhuzhou 412007 China

The Upper cretaceous dinosaur egg-bearing deposits in Henan Province,central china are divided into three formations in ascending order:Gaogou,Majiacun and *** Gaogou Formation belongs to alluvial fan deposits containing the fossil dinosaur egg assemblage of Faveoloolithus,Dendroolithus,Dictyoolithus,Paraspheroolithus and *** Majiacun Formation is interpreted as braided stream to meandering stream deposits with assemblage of Ovaloolithus,Paraspheroolithus,Placoolithus,Dendroolithus,Prismatoolithus, rare Youngoolithus and *** Sigou Formation is shallow lacustrine/palustrine to low-sinuosity river sedimentary rocks with assemblage of Macroolithus,Elongatoolithus,Ovaloolithus and Paraspheroolithus. To date,37 oospecies,13 oogenera and 8 oofamilies of dinosaur eggs have been *** dinosaur eggs are preserved in the floodplain deposits,whereas allochthonous and parautochthonous dinosaur eggs are preserved in the alluvial *** suggests that river floodplains are the best environments for the preservation of numerous autochthonous dinosaur *** preservation of most dinosaur eggs in brown to red calcic palaeosoils,muddy siltstones or mudstones suggests that the paleoclimate of the nesting area was *** presence of gray and green mudstone and coal layers,however,indicates that there existed an ephemeral subhumid climate during the middle and Late *** is suggested that such a climate was favorable for the development of meandering streams in a vegetated environment.

关键词： Dinosaur eggs Upper cretaceous Fluvial deposit characteristics of taphonomy and preservation Henan central china