Investigations of Hydrothermal Activity on the Gorda Ridge  using ALVIN
{'Code': '06040302', 'Directorate': {'Abbreviation': 'GEO', 'LongName': 'Directorate For Geosciences'}, 'Division': {'Abbreviation': 'OCE', 'LongName': 'Division Of Ocean Sciences'}}
{'SignBlockName': 'Nicholas Anderson', 'PO_EMAI': 'nanderso@nsf.gov', 'PO_PHON': '7032924715'}
As a continuation of the investigations of hydrothermal                 activity on sediment covered ridge axes begun in the Gulf of                    California (Guaymas Basin), support is provided for a diving                    expedition to the Gorda Ridge in the Northeast Pacific.  The                    southern end of this slow spreading ridge (Escanaba Trough; half-               rate  (12 mm/yr) is buried under several hundred meters of                      turbidite sediments derived from the mountainous coasts of the                  Pacific Northwest.  The sediment composition, immature sands of                 metamorphic and granitic origin, contrasts sharply with the                     mixture of andesitic and biogenic debris encountered in Guaymas.                The hydrothermal system is thus an extreme end-member with only                 three components:  seawater, tholeiites, turbidites and as a                    result, the contribution of the sediment to the chemistry of the                hydrothermal fluids will be easy to discern.  This is especially                true since the sediment- starved northern part of the Ridge is                  also available for study.  In a comparative study of these two                  systems it will be possible to establish the effectiveness of                   reactions with purely detrital sediments in localizing ore                      deposits and in controlling their chemistry.//
{'FirstName': 'John', 'LastName': 'Edmond', 'PI_MID_INIT': 'M', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'John M Edmond', 'EmailAddress': None, 'NSF_ID': '000458757', 'StartDate': '01/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Massachusetts Institute of Technology', 'CityName': 'CAMBRIDGE', 'ZipCode': '021394301', 'PhoneNumber': '6172531000', 'StreetAddress': '77 MASSACHUSETTS AVE', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Massachusetts', 'StateCode': 'MA', 'CONGRESSDISTRICT': '07', 'CONGRESS_DISTRICT_ORG': 'MA07', 'ORG_UEI_NUM': 'E2NYLCDML6V1', 'ORG_LGL_BUS_NAME': 'MASSACHUSETTS INSTITUTE OF TECHNOLOGY', 'ORG_PRNT_UEI_NUM': 'E2NYLCDML6V1'}
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{'Code': '1670', 'Text': 'Chemical Oceanography'}
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