Recent Carbonate Deposits from the Arabian Gulf:  An        Investigation of Elemental Partitioning Downflow in a       Freshwater Aquifer and Diagenesis of Sabkha-type Dolomite
{'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}
Zones of Holocene age carbonate deposits from immediately                  offshore of Al Jubayl, Saudi Arabia (in the Arabian Gulf), have                 been neomorphosed to low-magnesian calcite within a "freshwater"                aquifer.  Beneath the low-magnesian calcites are Pleistocene                    sabkha-type dolomites which are well-ordered, close to ideal                    stoichiometry, and have a "relatively" light  18O signature                     (i.e., these dolomites are intermediate between modern and                      ancient sabkha-type dolomites).                                                      Detailed microscopic (binocular, petrographic, cathodo-                    luminescent petrographic, and SEM) and geochemical (A.A. and                    stable isotopic) analyses will be employed to determine (1)                     trends due to differential elemental partitioning associated with               diagenesis of the low-magnesian calcites in the downflow direc-                 tion within the freshwater aquifer, and (2) diagenesis of the                   dolomites.                                                                           Three major contributions anticipated as a result of this                  investigation will be (1) the establishment of the validity of                  downflow trends in trace element abundances to determine ancient                paleoflow directions of diagenetic fluids, and (2) a better                     understanding of the diagenetic evolution of sabkha dolomites and               (3) contribution of new ideas related to mineral resource                       management.
{'FirstName': 'Henry', 'LastName': 'Chafetz', 'PI_MID_INIT': 'S', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Henry S Chafetz', 'EmailAddress': 'hchafetz@uh.edu', 'NSF_ID': '000166015', 'StartDate': '10/15/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of Houston', 'CityName': 'HOUSTON', 'ZipCode': '772043067', 'PhoneNumber': '7137435773', 'StreetAddress': '4300 MARTIN LUTHER KING BLVD', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Texas', 'StateCode': 'TX', 'CONGRESSDISTRICT': '18', 'CONGRESS_DISTRICT_ORG': 'TX18', 'ORG_UEI_NUM': 'QKWEF8XLMTT3', 'ORG_LGL_BUS_NAME': 'UNIVERSITY OF HOUSTON SYSTEM', 'ORG_PRNT_UEI_NUM': None}
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