Carbon Isotope studies of Phanerozoic Mass Extinction Events
{'Code': '06030101', 'Directorate': {'Abbreviation': 'GEO', 'LongName': 'Directorate For Geosciences'}, 'Division': {'Abbreviation': 'EAR', 'LongName': 'Division Of Earth Sciences'}}
{'SignBlockName': 'John A. Maccini', 'PO_EMAI': None, 'PO_PHON': None}
Carbon isotope studies of marine limestones detect shifts in               the depositional ratio of organic carbon to carbonate carbon;                   profiles of  13C are correlative with major mass extinction events              and changes in sea level.  During the proposed renewal period we                will complete characterization of the carbon isotope profile                    through the Late Paleozoic and the Permian/Triassic boundary.  A                sequence of two dozen profiles through the Permian/Triassic                     boundary in classic sections of the Tethys Sea, from the Alps to                China, will be completed and published.  A core of over 300 m                   through the Permian/Triassic boundary in a critical section at                  Gartnerkofel in the Carnic Alps of Austria, taken in September-                 October, 1986, will be the subject of a cross-disciplinary study                by a consortium of 12 specialists.  The earlier manifestations of               the Late Paleozoic carbon isotope anomaly, previously detected by               us and others in the Late Pennsylvanian, will be confirmed by new               collections in the western USA.  Geophysical and geochemical                    models for shifts in the carbon cycle, sea level and other                      geological parameters will be considered in relation to extinction              events.
{'FirstName': 'William', 'LastName': 'Holser', 'PI_MID_INIT': 'T', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'William T Holser', 'EmailAddress': 'wholser@oregon.uoregon.edu', 'NSF_ID': '000457912', 'StartDate': '02/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of Oregon Eugene', 'CityName': 'EUGENE', 'ZipCode': '974031905', 'PhoneNumber': '5413465131', 'StreetAddress': '1776 E 13TH AVE', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Oregon', 'StateCode': 'OR', 'CONGRESSDISTRICT': '04', 'CONGRESS_DISTRICT_ORG': 'OR04', 'ORG_UEI_NUM': 'Z3FGN9MF92U2', 'ORG_LGL_BUS_NAME': 'UNIVERSITY OF OREGON', 'ORG_PRNT_UEI_NUM': 'Z3FGN9MF92U2'}
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{'Code': '1571', 'Text': 'SCEC'}
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