| NSF Org: |
EAR Division Of Earth Sciences |
| Recipient: |
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| Initial Amendment Date: | June 2, 2003 |
| Latest Amendment Date: | July 6, 2005 |
| Award Number: | 0309935 |
| Award Instrument: | Continuing Grant |
| Program Manager: |
Sonia Esperanca
EAR Division Of Earth Sciences GEO Directorate for Geosciences |
| Start Date: | July 1, 2003 |
| End Date: | June 30, 2007 (Estimated) |
| Total Intended Award Amount: | $267,873.00 |
| Total Awarded Amount to Date: | $267,873.00 |
| Funds Obligated to Date: |
FY 2004 = $90,623.00 FY 2005 = $91,691.00 |
| History of Investigator: |
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| Recipient Sponsored Research Office: |
1664 N VIRGINIA ST # 285 RENO NV US 89557-0001 (775)784-4040 |
| Sponsor Congressional District: |
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| Primary Place of Performance: |
1664 N VIRGINIA ST # 285 RENO NV US 89557-0001 |
| Primary Place of
Performance Congressional District: |
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| Unique Entity Identifier (UEI): |
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| Parent UEI: |
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| NSF Program(s): |
Petrology and Geochemistry, EPSCoR Co-Funding |
| Primary Program Source: |
app-0104 app-0105 app-0403 |
| Program Reference Code(s): |
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| Program Element Code(s): |
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| Award Agency Code: | 4900 |
| Fund Agency Code: | 4900 |
| Assistance Listing Number(s): | 47.050 |
ABSTRACT
EAR-0309935
Arehart
Carlin-type deposits are amongst the richest and most important hydrothermal gold deposits in North America and appear to be associated in time and space with Eocene magmatism. In contrast, older magmatic episodes do not appear to have generated similar deposits. To better understand the interaction of ascending magmas, which were the driving force for these hydrothermal systems, with crustal rocks through which the magmas passed, measurements of stable isotopes of sulfur and oxygen will be made of unaltered plutonic rocks in the Great Basin. These measurements will be compared to similar isotopic measurements of crustal (cratonic basement, late Proterozoic rift-filling sedimentary rocks, Phanerozoic sedimentary rocks) and mantle materials that could have provided components to these igneous rocks. These data, when combined with extant geological, geochemical and geophysical data, will then be used to elucidate the crustal architecture of the region, to understand its control on the development of giant hydrothermal systems. These data will also address the question of why magmatism of different ages but in the same region, apparently did not generate the same large-scale metal redistribution in the crust that occurred in the Eocene.
The proposed research will provide opportunities to students focused on developing careers in mineral deposits research . The combination of applied science supported by both industry and government will provide students exposure to multiple aspects of mineral deposit research, and is critical in training the upcoming generation of mineral geoscientists for positions in industry, academia, or government. Support for this research will help to maintain and enhance the infrastructure for research and education, including the Nevada Stable Isotope Laboratory
PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH
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