| Abstract: | Sedex deposits account for more than 50 percent of the world‘s zinc and lead reserves and furnish more than 25 percent of the world‘s production of these two metals. This report draws on previous syntheses as well as on topical studies of deposits in sedex basins to determine the characteristics and processes that produced sedex deposits. This analysis also uses studies of the tectonic, sedimentary, and fluid evolution of modern and ancient sedimentary basins and mass balance constraints to identify the hydrothermal processes that are required to produce sedex deposits.
This report demonstrates how a genetic model can be translated into geologic criteria that can be used in the U.S. Geological Survey National Assessments for sedex zinc-lead-silver deposits to define permissive tracts, assess the relative prospectivity of permissive tracts, and map favorability within permissive tracts. |
| Genre: | USGS Numbered Series |
| ProdID: | 97873 |
| Citation Author: | Emsbo, Poul |
| Citation Contributing Office: | U.S. Geological Survey |
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| Citation Language: | ENGLISH |
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| Citation Online Only Flag: | Y |
| Citation Phsyical Description: | iv, 21 p. |
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| Citation Publisher: | U.S. Geological Survey |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 2009-1209 |
| Citation Search Results Text: | Geologic Criteria for the Assessment of Sedimentary Exhalative (Sedex) Zn-Pb-Ag Deposits; 2009; OFR; 2009-1209; Emsbo, Poul |
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| Citation Year: | 2009 |
| Type: | citation/reference |
| Text: | Geologic Criteria for the Assessment of Sedimentary Exhalative (Sedex) Zn-Pb-Ag Deposits; 2009; OFR; 2009-1209; Emsbo, Poul |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/ofr_2009_1209.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/of/2009/1209/ |
| Date Other: | Thu, 1 Oct 2009 00:00 -0500 |
| Publisher: | U.S. Geological Survey |
