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
Major and trace element,including REE,concentrations of the Doushantuo cap carbonate(c. 635 Ma) in South China...
JING HUANG~(1,2),XUELEI CHU~(1,2*),GANQING JIANG~3,LIANJUN FENG~1 & HUAJIN CHANG~4 1 Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China 2 State Key Laboratory of Lithospheric Evolution,Beijing 100029,China 3 Department of Geoscience,University of Nevada,Las Vegas,NV 89154-4010,USA 4 School of Life and Geography Sciences,Qinghai Normal University,Key Laboratory of Tibetan Plateau Environment and Resources,Ministry of Education,Xining 810008,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°.
A sample from the top of the Banxi Group(early Neoproterozoic) in Hunan Province(South China) was dated by the...
Qi-Rui Zhang,Xian-Hua Li,~1 Lian-Jun Feng,Jing Huang,and Biao Song~2 State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics, Chinese Academy of Sciences,P.O.Box 9825,Beijing 100029,China 1 Previous address:Key Laboratory of Isotope Geochronology and Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China. 2 Beijing SHRIMP Center,Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China.
