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Dongsheng Ma
Nanjing University
3Publications
2H-index
278Citations
Publications 3
Newest
Published on Jan 1, 2007in Geology 5.07
Bernd Lehmann33
Estimated H-index: 33
,
Thomas F. Nägler47
Estimated H-index: 47
(University of Bern)
+ 5 AuthorsPeter Dulski43
Estimated H-index: 43
We report evidence for the seawater origin of an extremely metal-enriched sulfide- and organic carbon–rich marker bed in a transgressive Early Cambrian black shale sequence along the passive margin of the Yangtze platform. The element concentration pattern in this marker bed suggests that it formed in a sediment-starved, stratified basin with a euxinic water column below an oxic surface layer. Biological activity was high in the surface layer, which was resupplied by communication with oxic ocea...
135 Citations Source Cite
Published on Jan 1, 2005
Jiayong Pan1
Estimated H-index: 1
,
Dongsheng Ma2
Estimated H-index: 2
+ 4 AuthorsWUKai3
Estimated H-index: 3
Published on May 1, 2003in Economic Geology 3.29
Jingwen Mao33
Estimated H-index: 33
,
Bernd Lehmann33
Estimated H-index: 33
+ 5 AuthorsRobert Kerrich53
Estimated H-index: 53
(U of S: University of Saskatchewan)
Black shales of the basal Lower Cambrian Niutitang Formation, southeast China, host a regionally distributed concordant, several centimeter-thick, sulfide layer which displays extreme metal enrichment, i.e., Mo-NiSe-Re-Os-As-Hg-Sb >1,000 times enriched and Ag-Au-Pt-Pd >100 times enriched over bulk continental crust. Mineable portions have about 5.5 wt percent Mo, 3.5 wt percent Ni, and 1 g/t PGE + Au. A six-point 187 Os/ 188 Os versus 187 Re/ 188 Os isochron on molybdenum-nickel ore samples defi...
143 Citations Source Cite
1