 | | Journal (article/letter/editorial) | | Polanco, Barriga Negra, Cerro Espuelitas, Cerros San Francisco and Cerro Victoria Formations (Gaucher, 2000;...2.6-3.4Ga SAL CH CC + ++ + + ++ ++ BRAZIL ARGENTINA + + + + + + ++ SBS Z SAL + ++ CUCHILLA...riemkeae Bavlinella faveolata P1 BN Arroyo Polanco Cerro Espuelitas CSF CV Fm. R. Frei et al. / Gondwana...Negra Formation, CSF Fm: Cerros San Francisco Formation, CV: Cerro Victoria Formation. “P” and “N” denote...the new stratigraphic scheme in more detail. The Cerro Espuelitas Formation conformably overlies the Polanco |  | Gao, Ping, Li, Shuangjian, Lash, Gary G., He, Zhiliang, Xiao, Xianming, Zhang, Dianwei, Hao, Yunqin (2020) Silicification and Si cycling in a silica-rich ocean during the Ediacaran-Cambrian transition. Chemical Geology, 552. 119787pp. doi:10.1016/j.chemgeo.2020.119787 | Journal (article/letter/editorial) | | Geosciences (Beijing), Beijing, 100083, China b , Department of Geology and Environmental Sciences, State...NY 14063, USA d -p , Science and Technology Department, SINOPEC, Beijing 1007 28, China * re Corresponding...the black shale succession at Meishucun, Yunnan Province (Compston et al., 2008). It is noteworthy that...were ground to a 200 mesh size in an automatic agate mortar. Approximately 4 g of powdered samples of...Sprechmann, P., 2007. Chemostratigraphy of the Cerro Victoria Formation (Lower Cambrian, Uruguay): Evidence |
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