Early Cambrian black shales along the southern margin of the Yangtze Block are characterized by polymetallic mineralization in the lower part,including Ni-Mo sulfide ore,V ore,barite ore,phosphate ore,and"stone c...Early Cambrian black shales along the southern margin of the Yangtze Block are characterized by polymetallic mineralization in the lower part,including Ni-Mo sulfide ore,V ore,barite ore,phosphate ore,and"stone coal"(Fig.1a)[1,2],which were likely related to or at least coincident with the global ocean oxygenation event[3]and the radiation of early animals[4].The source of oreforming elements and the metallogenic mechanism of these polymetallic mineralization layers are highly debated.The models proposed include hydrothermal venting,seawater scavenging,and a combination of key mineralization factors such as terrigenous input,hydrothermal supply,seawater contribution,and impacts of clay mineral and organic matter(Fig.S1 online)[1].展开更多
基金supported by the National Key Research and Development Program of China(2021YFA0718200)the National Natural Science Foundation of China(41972072,42172091,and 42172180)the Science and Technology Research Project for the Research Institute of Petroleum Exploration and Development,CNPC(2021YJCQ03)。
文摘Early Cambrian black shales along the southern margin of the Yangtze Block are characterized by polymetallic mineralization in the lower part,including Ni-Mo sulfide ore,V ore,barite ore,phosphate ore,and"stone coal"(Fig.1a)[1,2],which were likely related to or at least coincident with the global ocean oxygenation event[3]and the radiation of early animals[4].The source of oreforming elements and the metallogenic mechanism of these polymetallic mineralization layers are highly debated.The models proposed include hydrothermal venting,seawater scavenging,and a combination of key mineralization factors such as terrigenous input,hydrothermal supply,seawater contribution,and impacts of clay mineral and organic matter(Fig.S1 online)[1].
