Yangjiaping section is located in Hupingshan Town,Shimen County,Hunan Province.The section has been intensivel...
FENG Lianjun~(1,2),CHU Xuelei~(1,2),ZHANG Qirui~1, ZHANG Tonggang~(1,2),LI He~1 & JIANG Neng~(1,2) 1.Institute of Geology and Geophysics.Chinese Academy of Sciences. Beijing 100029.China: 2.Key Laboratory for Mineral Resources Research.Chinese Academy of Sciences.Beijing 100029.China
In South China,the Datangpo black shales(663Ma-654.5 Ma) were deposited during the Cryognian interglacial time...
Lian-Jun Feng~(a,*),Xue-Lei Chu~(a,b),Jing Huang~(a,b),Qi-Rui Zhang~a,Hua-Jin Chang~(a,b) a Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China b Key Laboratory for Mineral Resources,Chinese Academy of Sciences,Beijing 100029,China
The Kaigas, Sturtian, Marinoan, and Gaskiers glaciations are widely recognized in Neoproterozoic. However, in the South China Block only the Jiangkou (Sturtian) and Nantuo (Marinoan) are symbolized by sedimentary records. The Kaigas, recorded by isotopic and chemical proxies, exhibited likely the nature of cold paleoclimate with local mountain glaciation. The correlation of the Doushantuo Formation with the Gaskiers is indicated by the carbon isotope excursion and the dated age from the interval, however the South China Block was then under non-glacial weather. With no paleomagnetic data, the position of the South China Block during the Sturtian glaciation cannot be determined. The paleolatitudes of the South China Block during the Kaigas and Nantuo glaciations are intermediate, even though the Nantuo was once rendered erratically deduced equatorial. In fact, the paleolatitudes of the South China Block during the Neoproterozoic glaciations are all likely at about 30°―40°.
