NSF Org:	EAR Division Of Earth Sciences
Recipient:
Initial Amendment Date:	August 22, 2000
Latest Amendment Date:	August 22, 2000
Award Number:	0003803
Award Instrument:	Standard Grant
Program Manager:	Enriqueta Barrera EAR  Division Of Earth Sciences GEO  Directorate for Geosciences
Start Date:	August 1, 2000
End Date:	July 31, 2005 (Estimated)
Total Intended Award Amount:	$70,507.00
Total Awarded Amount to Date:	$70,507.00
Funds Obligated to Date:	FY 2000 = $70,507.00
History of Investigator:	Matthew Saltzman (Principal Investigator) saltzman.11@osu.edu
Recipient Sponsored Research Office:	Ohio State University Research Foundation -DO NOT USE 1960 KENNY RD Columbus OH  US  43210-1016 (614)688-8734
Sponsor Congressional District:	03
Primary Place of Performance:	Ohio State University 1960 KENNY RD COLUMBUS OH  US  43210-1016
Primary Place of Performance Congressional District:	03
Unique Entity Identifier (UEI):	QR7NH79713E5
Parent UEI:
NSF Program(s):	SCEC
Primary Program Source:	app-0100
Program Reference Code(s):	0000, OTHR
Program Element Code(s):	157100
Award Agency Code:	4900
Fund Agency Code:	4900
Assistance Listing Number(s):	47.050

ABSTRACT


0003803
Saltzman

The proposed research will result in a high-resolution (meter-scale) d13C stratigraphy for nearly 1.3 km of Carboniferous limestones exposed in the Arrow Canyon Range in southeastern Nevada. The Arrow Canyon Range has served a global reference section for the Carboniferous as a result of nearly 40 years of detailed work by academic, industry and government geologists. However, little geochemistry has been done to this point that can be used to address global processes (e.g., carbon cycling, continental weathering). The Mississippian samples for the carbon isotope curve will come from a section at Tungsten Gap and the Pennsylvanian portion will come from the section at Arrow Canyon. The two sections are essentially unfaulted and separated by less than 10 km along strike. Previous work has produced a detailed biostratigraphic framework for both sections using conodont and foraminifers, which will allow for the placement of the carbon isotope curve within a zonal time scale. Previous carbon isotope study in the Lower Mississippian portion of the Arrow Canyon succession has revealed well-preserved trends that can be correlated on a regional to global scale, indicating that the Arrow Canyon Range is well-suited for a detailed geochemical investigation. Carboniferous formations in the Arrow Canyon Range are almost entirely limestone, and make up an upward-shallowing succession during the Mississippian and at least two transgressive-regressive cycles, including cyclothemic deposition, during the Pennsylvanian. The carbon isotope curve will be integrated with similar data sets generated for the Carboniferous elsewhere in North America and Europe in order to test hypotheses about global changes in organic carbon burial rates and riverine weathering fluxes during a Greenhouse to Icehouse transition.

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