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 National Science
Foundation Award #9117576 |
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Solidification Front Instability and Silicic Chaos in Basaltic Sills
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| Investigator(s): |
Bruce Marsh (PI)
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| Sponsor: |
Johns Hopkins University, MD 21218 4105168668
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| Start Date/Expiration Date |
1992-03-01 to 1995-08-31 (amended 1994-03-08) |
| Awarded Amount to Date: |
$287,759 |
| Abstract: Compositionally disparate or bimodal magmas simultaneously occupying the same chamber have been inferred since the very beginnings of igneous petrology. This award supports a series of field-based investigations, centered around the diabase sills of Antarctica, some of which are perhaps the best examples of bimodal fractionation (solidification front instability-?SFI!), and augmented by experimental and analytical investigations, to delineate the physics and chemistry of SFI. Similar, complementary field studies will also be undertaken at the Stott Mountain, Oregon, and Zora, Pennsylvania involving, silicic lenses in gabbro and voluminous bulbous granophyre at their upper contact of a large diabase sheet. |
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| NSF Org: |
OPP - Office of Polar Programs |
| Award Number: |
9117576 |
| Award Instrument: |
Continuing grant |
| Program Manager: |
Scott Borg
OPP Office of Polar Programs
O/D OFFICE OF THE DIRECTOR
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| NSF Program(s): |
ANTARCTIC GEOLOGY & GEOPHYSICS, PETROLOGY AND GEOCHEMISTRY, PETROLOGY AND GEOCHEMISTRY
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| Field Application(s): |
Geological Sciences, Polar Programs-Related |
| Program Reference Code(s): |
ANTARCTIC GEOLOGY & GEOPHYSICS, 5112
RIDGE INTERDISC GLOBAL EXPERIMENTS, 1319
UNASSIGNED, 0000 |
| Program Element Code(s): |
5112
PETROLOGY AND GEOCHEMISTRY, 1573
, 1573
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