Facies Architecture and Depositional Processes Resulting    from Intra-Basinal Maar Volcanism, Hopi Buttes, NortheasternArizona
{'Code': '06030107', 'Directorate': {'Abbreviation': 'GEO', 'LongName': 'Directorate For Geosciences'}, 'Division': {'Abbreviation': 'EAR', 'LongName': 'Division Of Earth Sciences'}}
{'SignBlockName': 'John L. Snyder', 'PO_EMAI': None, 'PO_PHON': None}
The primary goal of this research is to determine the effect of                 intrabasinal volcanism, specifically maar volcanism, upon lowland               sedimentation.  The investigation will be carried out in the Hopi               Buttes volcanic field of northeastern Arizona, and will focus                   upon the depositional processes and resulting lithofacies                       architecture of the Mio-Pliocene Bidahochi Formation.  This                     comprises fluvial and lake-bed deposits of interbedded, reworked                tephra, un-reworked tephra representing the ejecta rims of maar                 volcanoes, and maar crater-filling sequences.  A secondary                      objective is to compare the "wetness" of the surficial                          environment (standing lake, dry playa, ephemeral streams)                       inferred from the sedimentological study of the Bidahochi                       Formation with independent estimates of "wetness" derived from                  study of the depositional features and pyroclast morphology of                  the maar volcanoes' tephra rims.  Maar fields are complex                       depositional environments.  The maar volcanoes themselves are                   both sediment sources (erupted tephra) and sinks (the craters can               capture through-flowing streams).  The resulting facies                         architecture cannot be interpreted without understanding both the               sedimentary and the volcanic processes operating within the                     depositional basin.                                                             The Hopi Buttes area is ideal for the study.  Exposures are                     excellent and continuous in cliffs bordering the buttes, and                    erosion has exposed various levels of the system, from slightly                 above the paleo-surface of eruption to the bases of many crater                 deposits.
{'FirstName': 'Richard', 'LastName': 'Fisher', 'PI_MID_INIT': 'V', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Richard V Fisher', 'EmailAddress': 'fisher@magic.ucsb.edu', 'NSF_ID': '000462946', 'StartDate': '03/01/1989', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of California-Santa Barbara', 'CityName': 'SANTA BARBARA', 'ZipCode': '931060001', 'PhoneNumber': '8058934188', 'StreetAddress': '3227 CHEADLE HALL', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'California', 'StateCode': 'CA', 'CONGRESSDISTRICT': '24', 'CONGRESS_DISTRICT_ORG': 'CA24', 'ORG_UEI_NUM': 'G9QBQDH39DF4', 'ORG_LGL_BUS_NAME': 'UNIVERSITY OF CALIFORNIA, SANTA BARBARA', 'ORG_PRNT_UEI_NUM': None}
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[{'Code': '155700', 'Text': 'VOLCANOLOGY & MANTLE GEOCHEMIS'}, {'Code': '157100', 'Text': 'SCEC'}]
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