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A New Occurrence Model for National Assessment of Undiscovered Volcanogenic Massive Sulfide Deposits

Open-File Report 2009-1235

By:
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Abstract

Volcanogenic massive sulfide (VMS) deposits are very significant current and historical resources of Cu-Pb-Zn-Au-Ag, are active exploration targets in several areas of the United States and potentially have significant environmental effects. This new USGS VMS deposit model provides a comprehensive review of deposit occurrence and ore genesis, and fully integrates recent advances in the understanding of active seafloor VMS-forming environments, and integrates consideration of geoenvironmental consequences of mining VMS deposits. Because VMS deposits exhibit a broad range of geological and geochemical characteristics, a suitable classification system is required to incorporate these variations into the mineral deposit model. We classify VMS deposits based on compositional variations in volcanic and sedimentary host rocks. The advantage of the classification method is that it provides a closer linkage between tectonic setting and lithostratigraphic assemblages, and an increased predictive capability during field-based studies.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
A New Occurrence Model for National Assessment of Undiscovered Volcanogenic Massive Sulfide Deposits
Series title:
Open-File Report
Series number:
2009-1235
Edition:
-
Year Published:
2009
Language:
ENGLISH
Publisher:
U.S. Geological Survey
Contributing office(s):
U.S. Geological Survey
Description:
iv, 27 p.
Online Only (Y/N):
Y