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USGS CMG U-2-71-GM Metadata

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ID U-2-71-GM
Also Known As 71002
Abstract United States Geological Survey, Corpus Christi, Texas. Chief Scientist: Jack Vedder. Geophysical data (sonobuoy, gravity, magnetics) of field activity U-2-71-GM in East Margin Yucatan Peninsula from 06/23/1971 to 07/08/1971
Organization United States Geological Survey, Corpus Christi, Texas
Project/Theme International Decade of Ocean Exploration (IDOE)
Chief Scientist Jack Vedder
Activity Type Geophysical
Platform United Geo. I
Area of Operation East Margin Yucatan Peninsula, Gulf of Mexico
Bounding Coordinates
-87.96520     -83.74833
Dates 06/23/1971 (JD 174) to 07/08/1971 (JD 189)
Analog Materials list
Scanned Materials log (pdf)
Jack Vedder Chief Scientist, USGS Western Region
Bill Dillon Geologist
A.E. Roberts Geologist
B.D. Ruppel Geophysicist
A.G. HcHendrie Geologist
P.E. Malin Geophysicist
C.A. Rodeick Phys. Sci Tech
H.R. Hill Electronic Tech
R.A. Patrick Electronic Tech
Equipment Used
Scientific objectives of Leg 2 were:
1) to investigate the evolution of the continental margin east of the Yucatan 
Peninsula and its relation to concepts of continental margin development:
2) to explore the possibility of structural and stratigraphic links between 
western Cuba and the Yucatan Peninsula;
3) to study the western terminus of the Cayman Ridge and Trench system and to 
determine its influence on the structure of British Honduras and Guatemala;
4) to examine the Yucatan Basin in order to interpret the origin of this 
distinct sea floor feature in the northwestern Caribbean;
5) to learn more about the nature of interaction between the North American and 
Caribbean plates in this area.
NSF/IDOE, From USGS Eastern Region admincru database...
    Control # --- 843
    PlatformDate ID --- UGEO19710619
    Sea Days --- 25
    Scientists --- 12
    Scientific Days --- 300
    WHFC Persons --- 9
    WHFC Person Days --- 225
    Study Region...
         Northern East Coast --- N
         Middle East Coast --- N
         Southern East Coast --- N
         Puerto Rico --- Y
         Gulf Coast --- N
         Virgin Islands --- Y
NGDC Overview
! Converted to time format with year at start.

MCG Data Collection ID ---         U271GM
Institution Data Collection ID --- U271GM
NGDC ID ---                        06010002
Funding ---                        NSF/IDOE
Project, Cruise & Leg ---          LEG 2, E MARGIN YUCATAN PEN.
Study region ---                   +21.00000,+16.00000, -88.00000, -83.00000
Chief Scientist(s) ---             Jack Vedder
Name of vessel ---                 United Geo. I (surface ship)
Date field data collection started --- 06/27/71     (unspecified)
Date field data collection ended ---   07/08/71     (unspecified)
Parameters surveyed ---
   Bathymetry:                     surveyed, contained in data file
   Magnetics:                      surveyed, contained in data file
   Gravity:                        surveyed, contained in data file
   High-resolution seismics:       (unspecified)
   Deep penetration seismics:      (unspecified)
Format --- 

Date of data input to NGDC ---     03/10/88
Contributing institution ---       USGS Branch of Pacific Marine Geology
Country ---                        United States

Navigation instrumentation ---     (unspecified)
Position determination method ---  (unspecified)

Bathymetry instrumentation ---            (unspecified)
Additional forms of bathymetric data ---  (unspecified)
General rate of bathymetry in file ---    1.8 minutes
General collection rate of bathymetry --- (unspecified)
Assumed sound velocity ---                (unspecified)
Bathymetric datum code ---                No correction applied (sea level)
Bathmetry interpolation scheme ---        (unspecified)

Magnetics instrumentation ---            (unspecified)
Additional forms of magnetics data ---   (unspecified)
General rate of magnetics in file ---    1.8 minutes
General collection rate of magnetics --- (unspecified)
Magnetic sensor tow distance ---         (unspecified)
Magnetic sensor depth ---                (unspecified)
Two sensor horizontal separation ---     (unspecified)
Residual magnetics reference field ---   (unspecified)
Method of applying residual field ---    (unspecified)

Gravity instrumentation ---            (unspecified)
Additional forms of gravity data ---   (unspecified)
General rate of gravity in file ---    1.9 minutes
General collection rate of gravity --- (unspecified)
Theoretical gravity formula ---        (unspecified)
Reference system ---                   (unspecified)
Corrections applied ---                (unspecified)
Starting land tie ---                  (unspecified)
Ending land tie   ---                  (unspecified)

Seismic instrumentation --- (unspecified)
Formats of seismic data --- (unspecified)
Vedder, J.G., 1972, Acoustic Relfection Profiles, East Margin Yucatan Peninsula, 
International Decade of Ocean Exploration, Leg 2, 1971 Cruise, Unitedgeo I, 
USGS-GD-72-003 (see Analog materials list)

Dillon, W.P., Vedder, J.G., and Graf, R.J., 1972, Structural profile of the northwestern Caribbean: Earth and Planetary Science Letters, v. 17, no. 1, p. 175-180.

Vedder, J.G., MacLeod, N.S., Lanphere, M.A., and Dillon, W.P., 1973, Age and tectonic implications of some low-grade metamorphic rocks from the Yucatan Channel: Journal of Research of the U.S. Geological Survey, v. 1, no. 2, p. 157-164.

Arnal, R.E., and Vedder, J.G., 1976, Changes in Miocene paleobathymetry of California continental borderland north of 32 degrees: American Association of Petroleum Geologists Bulletin, v. 60, no. 4, American Association of Petroleum Geologists-Society For Sedimentary Geology annual meeting, p. 646.
Got Help? For U-2-71-GM, we would appreciate any information on -- contract, days at sea, dive count, funding, information specialist, information to be derived, kms of navigation, national plan, owner, ports, project number, scanned materials, seismic description, station count, station description, submersible, summary, tabulated info.
Type Webpage KMZ Arc         Metadata        
Bathymetry data bath    
Gravity data grav    
Magnetics data mag    
Metadata data     txt  data  FAQ  xml
Navigation data nav    
Times   050.times    

U-2-71-GM location map of where navigation 

equipment operated
U-2-71-GM location map of where navigation 

equipment operated

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