Publication Date:
2011-06-15
Description:
High-resolution biostratigraphy has been established on the basis of fossil ostracodes from cores of the Cretaceous Continental Scientific Drilling borehole-Songke 1 (south) (SK1(s)) in the Songliao Basin, northeast China. More than 80 species belonging to 13 genera have been identified and 15 ostracode assemblage zones have been recognized. On the basis of ostracode paleoecological analysis, paleoenvironments, for example lake levels and salinity, have been reconstructed. Two inferred deep-water phases occurred during the deposition of the lower Qingshankou and lower Nenjiang formations, whereas shallower water phases probably occurred during deposition of the upper Quantou and uppermost Qingshankou to Yaojia formations. The salinity of paleo-Songliao lake is interpreted as predominantly freshwater to oligohaline. Oligohaline to mesohaline water environments may have occurred during the first and middle third members of the Qingshankou formation and the lower first and lower second members of the Nenjiang formation. Content Type Journal Article Pages 1-11 DOI 10.1007/s10750-011-0765-6 Authors Dangpeng Xi, School of Earth Sciences and Resources, China University of Geosciences, Xueyuan Road, Haidian District, Beijing, 100083 People’s Republic of China Shun Li, School of Earth Sciences and Resources, China University of Geosciences, Xueyuan Road, Haidian District, Beijing, 100083 People’s Republic of China Xiaoqiao Wan, School of Earth Sciences and Resources, China University of Geosciences, Xueyuan Road, Haidian District, Beijing, 100083 People’s Republic of China Xia Jing, School of Earth Sciences and Resources, China University of Geosciences, Xueyuan Road, Haidian District, Beijing, 100083 People’s Republic of China Qinghua Huang, Daqing Oilfield, Daqing, Heilongjiang, People’s Republic of China Jean-Paul Colin, Impassse des Biroulayres, 33610 Cestas, France Zhuo Wang, School of Earth Sciences and Resources, China University of Geosciences, Xueyuan Road, Haidian District, Beijing, 100083 People’s Republic of China Weiming Si, School of Earth Sciences and Resources, China University of Geosciences, Xueyuan Road, Haidian District, Beijing, 100083 People’s Republic of China Journal Hydrobiologia Online ISSN 1573-5117 Print ISSN 0018-8158
Print ISSN:
0018-8158
Electronic ISSN:
1573-5117
Topics:
Biology
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