USGS CMG L-5-80-AA Metadata

! Converted to time format with year at start.
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DATA COLLECTION OVERVIEW  (use NGDC GEODAS CD to retrieve data)

MCG Data Collection ID ---         L580AA
Institution Data Collection ID --- L580AA
NGDC ID ---                        06050035
Funding ---                        (unspecified)
Project, Cruise & Leg ---          (unspecified)
Study region ---                   +58.00000,+50.00000,-175.00000,-152.00000
Chief Scientist(s) ---             DAVE SCHOLL / TRACY VALLIER
Name of vessel ---                 Lee (surface ship)
Date field data collection started --- 06/23/80     LEAVE KODIAK
Date field data collection ended ---   07/05/80     ARRIVE DUTCH HARBOR
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 --- 

(I1,A8,F5.2,4I2,F5.3,F8.5,F9.5,I1,F6.4,F6.1,I2,i1,3F6.1,I1,F5.1,F6.0,F7.1,F6.1,F5.1,A8,4I1)
Date of data input to NGDC ---     06/12/87
Contributing institution ---       USGS Branch of Pacific Marine Geology
Country ---                        United States

Navigation instrumentation ---     SATNAV,INTEGRATED NAVIGATION
Position determination method ---  PRIM-SATNAV SEC-INTEGRATED NAV

Bathymetry instrumentation ---            12KHZ NARROW 1 SEC, 3.5KHZ WIDE 1 SEC
Additional forms of bathymetric data ---  RECORDER ROLLS
General rate of bathymetry in file ---    2.0 minutes
General collection rate of bathymetry --- 20/SECONDS
Assumed sound velocity ---                1463.0 m/sec
Bathymetric datum code ---                No correction applied (sea level)
Bathmetry interpolation scheme ---        (unspecified)

Magnetics instrumentation ---            PROTON PRECESSION MAG-GEOMETRICS G-801
Additional forms of magnetics data ---   ANALOG RECORDS
General rate of magnetics in file ---    1.0 minutes
General collection rate of magnetics --- 4 seconds
Magnetic sensor tow distance ---         213 meters
Magnetic sensor depth ---                (unspecified)
Two sensor horizontal separation ---     (unspecified)
Residual magnetics reference field ---   IGRF-75
Method of applying residual field ---    LINEAR INTERP.BETWEEN NAV POINTS

Gravity instrumentation ---            (unspecified)
Additional forms of gravity data ---   (unspecified)
General rate of gravity in file ---    1.0 minutes
General collection rate of gravity --- 15 seconds
Theoretical gravity formula ---        International 1930
Reference system ---                   System IGSN 71
Corrections applied ---                DRIFT CORRECTIONS
Starting land tie ---                  968857.3   KODIAK, AK.
Ending land tie   ---                  (unspecified value)  (unspecified

Seismic instrumentation --- SINGLE CHANNEL, 24 CHANNEL
Formats of seismic data --- ANALOG RECORDS

McCarthy, Jill, Stevenson, Andrew J., Scholl, David W., and Vallier, Tracy L., 
1984, Speculations on
the petroleum geology of the accretionary body; an example from the central 
Aleutians: Marine and
Petroleum Geology, v. 1, no. 2, p. 151-167. 


McCarthy, Jill, and Scholl, David W., 1985, Mechanisms of subduction accretion 
along the
central Aleutian Trench: Geological Society of America Bulletin, v. 96, no. 6, 
p. 691-701.


Harbert, W.P., Scholl, David W., Mann, D., Vallier, Tracy L., and Stevenson, 
Andrew J., 1982,
Geologic and tectonic history of Atka Basin, Aleutian Ridge, in American 
Geophysical Union
1982 fall meeting: American Geophysical Union Eos, Transactions, v. 63, no. 45, 
p. 1115.


McCarthy, J., Scholl, David W., Mann, D., Vallier, Tracy L., and Stevenson, Andrew J., 1982,
Mechanisms of accretion along the Aleutian Trench, in American Geophysical Union 
1982 fall
meeting: American Geophysical Union Eos, Transactions, v. 63, no. 45, p. 
1115.


Harbert, William, Scholl, David W., Vallier, Tracy L., Stevenson, Andrew J., and 
Mann, D.M., 1986,
Major evolutionary phases of a forearc basin of the Aleutian Terrace; relation 
to North Pacific
tectonic events and the formation of the Aleutian subduction complex: Boulder, 
CO, Geology,
v. 14, no. 9, p. 757-761.


McCarthy, Jill, Scholl, David W., and Sleep, Norman H., 1983, Accretionary structures along
the central Aleutian Trench: American Geophysical Union Eos, Transactions, v. 
64, no. 45, p. 870.


McCarthy, Jill, 1987, Seismic reflection imaging of plate boundaries; examples 
from the
central Aleutians, the North Atlantic, and the Basin and Range Province of the 
Western U.S.:
Stanford, CA, Stanford University Ph. D. Dissertation.


Mann, Dennis M., Scholl, David W., and Sliter, Ray W., 1989, Multichannel seismic-reflection
data collected in 1980 across the Aleutian Arc and Trench, Alaska: U.S. 
Geological Survey
Open-File Report 89-0202, 4 p., 1 sheet.