Abstracts of Acta Geologica Sinica (Chinese Edition) Vol. 77, No. 1,2003

Distribution of Mid-Cretaceous Orbitolinids in Tibet and ItsPaleobiogeographic ImplicationsWAN Xiaoqiao, WU Yianhua and LI Guobiao (China Universityof Geosciences, Beijing 100083, China)Orbitolinids is a kind of large foraminifera. It occurredfrequently during the late Barremian to Cenomanian of theCretaceous and is distributed worldwide, especially in theshallow marine belts surrounding the Tethys Ocean. Itsdistribution in Tibet is limited to the Lhasa Block and some partsof the Qiangtang Basin. On both sides of this area, the     

Abstracts of Acta Geologica Sinica (Chinese Edition)Vol.77,No.2,2003

Members of the Chengjiang Biota from the Lower CambrianNiutitang Formation, Zunyi County, Guizhou Province,ChinaYANG Ruidong, ZHANG Weihua, JIANG Lijun and GAO Hui(Guizhou University of Technology Guiyang, Guizhou 550003)The Chengjiang Biota was called a window of the "Cambrianexplosion". The occurrence of the biota is all along restricted ineastern Yunnan Province. Recently, Naronia, Archotubaconoidalis, Isoxys, Perspicaris, Lingulepis, Tsunyidiscus,Scenella, medusiform fossil, Leptomitus, Rhabdopleura fossil,Hyolithids, Zunyiphyton perelegans Yang et Zhao, 1999,Yuknessia sp., Longenema Ding, 1996, and Sphaerocongregusvariabilis were discovered in the Lower Cambrian Niutitang     

Abstracts of Acta Geologica Sinica （Chinese Edition） Vol. 80, No. 4, 2006

Natural Environment during the Living Period of Early Human and Gigantic Ape in West Hubei CHENG Jie, ZHENG Shaohua, GAO Zhenji, ZHANG Zhaoqun, FENG Xiaobo, and WANG Xiaoning (School of Earth Science and Mineral Resources, China University of Geosciences, Beijing 100083; Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Science, Beijing 100044; Department of Urban and Environment, Peking University, Beijing 100871; Institute of Cultural Relics and Archaeology of Hubei Province, Wuhan, Hubei 430077; Enshi Museum, Enshi, Hubei 445000)     

Abstracts of Acta Geologica Sinica （Chinese Edition） Vol. 78, No. 4, 2004

A New Study on the Stratotype and Biostratigraphy of the Yixian Stage in the Yixian-Beipiao Region, Liaoning --Establishment and Study of the Yixian StratotypeWANG Wuli, ZHANG Lijun, ZHENG Shaolin, ZHENG Yuejuan, ZHANG Hong, LI Zhitong and YANG Fanglin (Shenyang Institute of Geology and Mineral Resources, Shenyang, Liaoning 110032)     

Abstracts of Acta Geologica Sinica （Chinese Edition） Vol. 80, No. 5, 2006

Space-Time Coordinate of the Evolution and Reformation and Mineralization Response in the Ordos Basin LIU Chiyang, ZHAO Hongge, GUI Xiaojun, YUE Leping, ZHAO Junfeng and WANG Jianqiang (State Key Laboratory of Continental Dynamics (Northwest University), Institute of Oil and Gas of Northwest University, Xi'an, Shannxi 710069) The Ordos Basin developed during the middle-late Triassic and early Cretaceous and has been reformed since the late Cretaceous. It mainly possesses the intra-craton characters and is a residual basin with multi-stage and different reformation. The Ordos Basin     

Abstracts of Acta Geologica Sinica (Chinese Edition) Vol.72, No.1,1998

Establishment and Evolutionary Successions of Entomofaunas in the North of ChinaHONG Youchong (Beijing Museum of Natural History, Beijing, 100050)Terrestrial strata are widely distributed in China, especially in the North of the Chinese palaeocontinent,yielding abundant fossil insects associated with other fossil biotas. Through acumulation of nationwide in-sect specimens and their systematic study for several decades it has been found that the stratigraphic rangeof these fossi1 insects is Upper Carboniferous to Miocene in northern China. In various geological periodsthere appeared various unique insects. According to the history of their appearance, development, flour-ishing and disappearance in geological ages three (Late Palaeozoic, Mesozoic, and Tertiary) evolutionary     

Abstracts of Acta Geologica Sinica (Chinese Edition)Vol. 72, No.3,1998

Since the 1970s, Precambrian metazoans and metaphytes, such as macro-algae, soft-body fossils, spongespines, skeletal fossils and trace fossils in the whole Sinian biota have been studied in China, exceptstrotomatolies and microplants. A series of biotas or floras have been set up in different localities, in-cluding the Huainan biota, Liaonan biota, Lantian flora, Miaohe biota, Gaojiashan biota and Xilingxiabiota. In order to carry out a more intensive study of Precambrian palaeontology and genetic stratigraphy,     

Abstracts of Acta Geologica Sinica (Chinese Edition)Vol. 76, No. 3,2002

At the end of the Oligocene, the "long-range effect" of the India-Eurasia collision terminated the link between the Tarim basin and the Paiaeo-Mediterranean and the Tarim basin started a development of continental basin. A very thick continental sequence mainly of fluvial-lacustrine facies deposited in the western Tarim basin in the Neogene. This sequence, composed mainly of clastic rocks with intercalation of evaporites, and of varying thickness with maximum of 6050 m, is classified into the     

Abstracts of Acta Geologica Sinica （Chinese Edition） Vol. 80, No. 6, 2006

Discovery of the Bivalvia-Qiyangia Assemblage in the Northern Qiangtang Area and Its Stratigraphic Significances LI Qian, LU Gang, ZHANG Nen, XU Hua, TANG Zhaoxia and WEI Xiaoyan (Guangxi Institute of Regional Geological Survey, Guilin, Guangxi 541003; No. 271 Team of Geological Survey, Guangxi Bureau of Geological Exploration, Guilin, Guangxi 541100) A set of Early Jurassic freshwater Bivalvia assemblage, Qiyangia assemblage, was discovered recently from the "Qoima Co Formation" in the Duxue Mountain area in the Qiangtang Basin,     

Abstracts of Acta Geologica Sinica (Chinese Edition)Vol. 74, No. 4,2000

Our field work and geochronologic studies in northern Hebei and western Liaoning areas indicate that the major Mesozoic contractional events in the Yanshan belt are of(1) pre-Middle Jurassic(Indosinian?),(2) Late Jurassic and(3) Early Cretaceous age. The first N-S shortening could be a consequence of the collision of the Mongolian arcs along the Solon suture against the North China plate. Siberian-North China plate colli-     

Abstracts of Acta Geologica Sinica (Chinese Edition): Vol. 73, No. 4, 1999

The Reservior Characteristics of Lower Ordovician Dolomites Below Pre-Mesozoic Unconformity in Yakela Fault-convex, Tarim Basin The Blueschist Belt in the Shuanghu Region, Central-Northern Tibet and Its Tectonic Implications Reef Palaeopool and Prediction of Buried Reefs in the Lower Permian Series from Shiwandashan Basin of Guangri Province Geochemistry of Rare Earth Elements in Late Paleozoic Coals in the North China Phase Transition and Composition Change of Minerals from Melting Experiment of Two Kinds of Metamorphics in Fuping Group, Pingshan, Hebei Province, China Palaeoecology and Palaeoenvironment of the Jehol Biota — A Palaeoecological and Palaeoenvironmental Reconstruction of Conchostracan Palaeocommunities in the Northern Hebei-Western Liaoning Area Research on Micro-FT.IR of Macerals of C-P Coals in the Bohal Bay Basin Self-similar Texture of the Mid—Longling—Ruili Strike-Slip System and the Location of Hydrothermal Deposits Metamorphism of the Eclogites from the ZK703 drillhole in Donghai, South Sulu (Jiangsu-Shandong) Ultrahigh-pressure Metamorphic Belt, Eastern China     

Abstracts of Acta Geologica Sinica (Chinese Edition)Vol. 72,2,1998

The reef-chert suite is an important rock assemblage, and consists mainly of four types of rocks with a fixed andorderiy relation in space and time. Its lower part is composed of carbonate rocks of reef facies (including reef,mound and organic bank); the upper part is represented by fine black detrital rocks; and the transitional partbetween the lower and upper parts is marked by hydrothermal sedimentary infilling, metasomatic and dynamicrocks (ores) characterized by cherts (nonbiogenic laminar, banded and massive cherts) and metal ore layers.