The Cretaceous System in China |
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作者姓名: | WAN Xiaoqiao CHEN Peiji WEI Mingjian |
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作者单位: | Capital Normal University, 105 Xishanhuan Beilu, Beijing 100037; China University of Geosciences, 29 Xueyuan Road, Beijing 100083;Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, Jiangsu 210008;Capital Normal University, 105 Xishanhuan Beilu, Beijing 100037 |
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基金项目: | This work was supported by the National Basic Research Program of China (No. 2006CB701400), the National Natural Science Foundation of China (Grant Nos. 40672020 and 40472011), and the Beijing City Key Lab. of Resources, Environment and GIS. |
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摘 要: | This paper provides an outline of Cretaceous stratigraphy and paleogeography in China, which is based on rich data obtained from recent researches. Cretaceous deposits are widespread in China. Most strata are of nonmarine origin and marine sediments occur only in Tibet, western Tarim Basin of Xinjiang, Taiwan and limited localities of eastern Heilongjiang. All deposits are rich in fossils and well-constrained biostratigraphically. The stratigraphic successions of different regions are illustrated, and general stratigraphic division and correlation have been introduced. The marine deposits are described in the Tibetan Tethys, Kashi-Hotan Region of Xinjiang, eastern Heilongjiang, western Yunnan and Taiwan; the nonmarine deposits are outlined from northeast China, southeast China, southern interior China, southwest China, the Shaanxi-Gansu-Ningxia region, and northwestern China intermontane basins. The sedimentary facies and paleogeography are diversified. In Tibet the basin evolution is largely related to the subduction and collision of the Indian Plate against the Eurasian Continent, and shows a tectonic evolution in the Cretaceous. Foraminifera are a dominant biota in the Tibet Tethys. Nonmarine sediments include variegated and red beds, coal- or salt-bearing horizons, and volcanic rocks. These deposits contain diverse and abundant continental faunas and floras, as well as important coal and oil resources. The Cretaceous stratigraphy and paleogeography in China have presented a foundation for geological studies.
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关 键 词: | China Cretaceous stratigraphy paleogeography marine nonmarine |
收稿时间: | 2007/8/21 0:00:00 |
修稿时间: | 2007/9/25 0:00:00 |
The Cretaceous System in China |
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Authors: | WAN Xiaoqiao CHEN Peiji WEI Mingjian |
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Abstract: | This paper provides an outline of Cretaceous stratigraphy and paleogeography in China, which is based on rich data obtained from recent researches.Cretaceous deposits are widespread in China.Most strata are of nonmarine origin and marine sediments occur only in Tibet,western Tarim Basin of Xinjiang,Taiwan and limited localities of eastern Heilongjiang.All deposits are rich in fossils and well-constrained biostratigraphically.The stratigraphic successions of different regions are illustrated,and general stratigraphic division and correlation have been introduced.The marine deposits are described in the Tibetan Tethys,Kashi-Hotan Region of Xinjiang,eastern Heilongjiang, western Yunnan and Taiwan;the nonmarine deposits are outlined from northeast China,southeast China,southern interior China,southwest China,the Shaanxi-Gansu-Ningxia region,and northwestern China intermontane basins.The sedimentary facies and paleogeography are diversified. In Tibet the basin evolution is largely related to the subduction and collision of the Indian Plate against the Eurasian Continent,and shows a tectonic evolution in the Cretaceous.Foraminifera are a dominant biota in the Tibet Tethys.Nonmarine sediments include variegated and red beds,coal-or salt-bearing horizons,and volcanic rocks.These deposits contain diverse and abundant continental faunas and floras,as well as important coal and off resources.The Cretaceous stratigraphy and paleogeography in China have presented a foundation for geological studies. |
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Keywords: | China Cretaceous stratigraphy paleogeography marine nonmarine |
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