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GEOREF RECORD

Salt as a fluid driver, and basement as a metal source, for stratiform sediment-hosted copper deposits

Lyudmyla Koziy, Stuart Bull, Ross Large and David Selley
Salt as a fluid driver, and basement as a metal source, for stratiform sediment-hosted copper deposits
Geology (Boulder) (December 2009) 37 (12): 1107-1110

Abstract

The source of copper for stratiform sediment-hosted copper deposits is considered to be redbed clastics situated stratigraphically below the deposits. However, for one of the principal copper provinces in the world, the Zambian Copperbelt, there is insufficient thickness of redbeds to constitute a viable source. Numerical modeling demonstrates that high-salinity sedimentary brines, generated beneath a halite seal, will develop convective hydrothermal plumes that penetrate through the redbeds, deep into the crystalline basement, despite its low permeability and regardless of the availability of cross-stratal conduits. This greatly expands the volume of the potential metal source for this style of ore deposit.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 37
Serial Issue: 12
Title: Salt as a fluid driver, and basement as a metal source, for stratiform sediment-hosted copper deposits
Affiliation: University of Tasmania, Centre of Excellence in Ore Deposits, Hobart, Tasmania, Australia
Pages: 1107-1110
Published: 200912
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 23
Accession Number: 2010-007901
Categories: Economic geology, geology of ore depositsHydrogeology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: With GSA Data Repository Item 2009274
Illustration Description: sects.
S17°00'00" - S08°00'00", E22°00'00" - E33°30'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201005
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