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What does this data set describe?

Title:
Data of field activity L-12-81-NP in North Pacific Ocean from 09/19/1981 to 10/05/1981
Abstract:
Chief Scientists: Dennis Mann, Don Tompkins. Data (12khz, 3dot5khz, gravity, landtie, courserecorder, dopplersonar, integratednavigation, RhoRho, transitsatellite, 24channel, airgun, sonobuoy) of field activity L-12-81-NP in North Pacific Ocean from 09/19/1981 to 10/05/1981, <http://walrus.wr.usgs.gov/infobank/l/l1281np/html/l-12-81-np.meta.html>.
Supplemental_Information:

Equipment Used -
12khz
3dot5khz
gravity
landtie
courserecorder
dopplersonar
integratednavigation
RhoRho
transitsatellite
24channel
airgun
sonobuoy
Publications -
Morton, Janet L., Sleep, Norman H., Normark, William R., and Tompkins, Donald H., 1987,
Structure of the southern Juan de Fuca Ridge from seismic reflection records, in Special
section on The southern Juan de Fuca Ridge; hydrothermal fluids, sulfides, and geophysical
studies [modified]: Journal of Geophysical Research, B, Solid Earth and Planets, v. 92,
no. 11, p. 11,315-11,326.<BR>
<HR>
Morton, Janet L., Normark, William R., Mann, Dennis M., and Tompkins, Donald H., 1987, Geology,
evolution, and mineral potential of the Juan de Fuca Ridge, in Scholl, David W.,
Grantz, Arthur, and Vedder, John G., eds., Geology and resource potential of the continental
margin of western North America and adjacent ocean basins, Beaufort Sea to Baja California:
Circum-Pacific Council for Energy and Mineral Resources, Earth Science Series, v. 6, p. 537-547.<BR>
<HR>
Morton, Janet L., Zierenberg, Robert A., and Reiss, Carol A., eds., 1994, Geologic,
hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern
California: U.S. Geological Survey Bulletin 2022, 359 p.<BR>
<HR>
Morton, Janet L., Zierenberg, Robert A., and Reiss, Carol A., 1994, Geologic,
hydrothermal, and biologic studies at Escanaba Trough; an introduction, in Morton,
Janet L., Zierenberg, Robert A., and Reiss, Carol A., eds., Geologic, hydrothermal,
and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California:
U.S. Geological Survey Bulletin 2022, p. 1-18.<BR>
<HR>
Morton, Janet L., and Fox, Christopher G., 1994, Structural setting and interaction
of volcanism and sedimentation at Escanaba Trough; geophysical results, in Morton, Janet
L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic
studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological
Survey Bulletin 2022, p. 21-43.<BR>
<HR>
Davis, Earl E., and Becker, Keir, 1994, Thermal and tectonic structure of Escanaba
Trough; new heat-flow measurements and seismic-reflection profiles, in Morton, Janet
L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic
studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological
Survey Bulletin 2022, p. 45-64. <BR>
<HR>
Denlinger, Roger P., and Holmes, Mark L., 1994, A thermal and mechanical model for
sediment hills and associated sulfide deposits along Escanaba Trough, in Morton, Janet
L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic
studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological
Survey Bulletin 2022, p. 65-75.<BR>
<HR>
Karlin, Robert E., and Morton, Janet L., 1994, Crustal magnetization and basement
structure of Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol
A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge,
offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 77-90.<BR>
<HR>
Normark, William R., Gutmacher, Christina E., Zierenberg, Robert A., Wong, Florence L.,
and Rosenbauer, Robert J., 1994, Sediment fill of Escanaba Trough, in Morton, Janet
L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic
studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological
Survey Bulletin 2022, p. 91-129.<BR>
<HR>
Karlin, Robert E., and Zierenberg, Robert A., 1994, Sedimentation and neotectonism
in the SESCA area, Escanaba Trough, southern Gorda Ridge, in Morton, Janet
L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic
studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological
Survey Bulletin 2022, p. 131-141.<BR>
<HR>
Ross, Stephanie L., and Zierenberg, Robert A., 1994, Volcanic geomorphology of the SESCA
and NESCA sites, Escanaba Trough, in Morton, Janet
L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic
studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological
Survey Bulletin 2022, p. 143-151.<BR>
<HR>
Davis, Alice S., Clague, David A., and Friesen, Walter B., 1994, Petrology and mineral
chemistry of basalt from Escanaba Trough, in Morton, Janet
L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic
studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological
Survey Bulletin 2022, p. 153-170.<BR>
<HR>
Zierenberg, Robert A., Morton, Janet L., Koski, Randolph A., and Ross, Stephanie L., 1994,
Geologic setting of massive sulfide mineralization in Escanaba Trough, in Morton, Janet
L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic
studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological
Survey Bulletin 2022, p. 171-197.<BR>
<HR>
Campbell, Andrew C., German, Chris R., Palmer, Martin R., Gamo, Toshitaka, and Edmond,
John M., 1994, Chemistry of hydrothermal fluids from Escanaba Trough, Gorda Ridge, in
Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal,
and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California:
U.S. Geological Survey Bulletin 2022, p. 201-221.<BR>
<HR>
Bohlke, J.K., and Shanks, W.C., III, 1994, Stable isotope study of hydrothermal vents
at Escanaba Trough; observed and calculated effects of sediment-seawater interaction,
in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal,
and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California:
U.S. Geological Survey Bulletin 2022, p. 223-239.<BR>
<HR>
Magenheim, Andrew J., and Gieskes, Joris M., 1994, Evidence for hydrothermal fluid flow
through surficial sediments, Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A.,
Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough,
Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022,
p. 241-255.<BR>
<HR>
Zierenberg, Robert A., and Shanks, Wayne C., III, 1994, Sediment alteration associated
with massive sulfide formation in Escanaba Trough, Gorda Ridge; the importance of seawater
mixing and magnesium metasomatism, in Morton, Janet L., Zierenberg, Robert A., Reiss,
Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough,
Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022,
p. 257-277.<BR>
<HR>
Kvenvolden, Keith A., Rapp, John B., and Hostettler, Frances D., 1994, Hydrocarbons in
sediment from Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss,
Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough,
Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022,
p. 279-292.<BR>
<HR>
Koski, Randolph A., Benninger, Laura M., Zierenberg, Robert A., and Jonasson, Ian R.,
1994, Composition and growth history of hydrothermal deposits in Escanaba Trough,
southern Gorda Ridge, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A.,
eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge,
offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 293-324.<BR>
<HR>
Grassle, J. Frederick, and Petrecca, Rosemarie F., 1994, Soft-sediment hydrothermal
vent communities of Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A.,
Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba
Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin
2022, p. 327-335.<BR>

Similar information is available for thousands of other USGS/CMG-related Activities.
If known, available are Activity-specific navigation, gravity, magnetics, bathymetry, seismic, and sampling data; track maps; and equipment information; as well as summary overviews, crew lists, and information about analog materials.
If available, access to physical samples is described in the "WR CMG Sample Distribution Policy" at: <http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html>
Primary access to the USGS/CMG Information Bank's digital data, analog data, and metadata is provided through... <http://walrus.wr.usgs.gov/infobank/>
This page accomodates a variety of search approaches (e.g., by platform, by region, by scientist, by equipment type, etc.).
  1. How should this data set be cited?

    U.S. Geological Survey (USGS) <http://www.usgs.gov/>, Coastal and Marine Geology Program (CMGP) <http://marine.usgs.gov/>, 20131101, Data of field activity L-12-81-NP in North Pacific Ocean from 09/19/1981 to 10/05/1981: U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>, Menlo Park, CA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -130.79816
    East_Bounding_Coordinate: -122.11925
    North_Bounding_Coordinate: 45.35836
    South_Bounding_Coordinate: 37.50413

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 19-Sep-1981
    Ending_Date: 05-Oct-1981
    Currentness_Reference: ground condition

  5. What is the general form of this data set?

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      Indirect_Spatial_Reference: North Pacific Ocean
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.00001. Longitudes are given to the nearest 0.00001. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.

      Vertical_Coordinate_System_Definition:
      Depth_System_Definition:
      Depth_Datum_Name: Local surface
      Depth_Resolution: 0.1
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Attribute values


  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    Bathymetry with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/bath.html>
    Entity_and_Attribute_Overview:
    Gravity with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/grav.html>
    Entity_and_Attribute_Overview:
    Magnetics with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/mag.html>
    Entity_and_Attribute_Overview:
    Navigation with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/nav.html>
    Entity_and_Attribute_Overview:
    Seismic Shots with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/seis.html>


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Dennis Mann (Chief Scientist); Don Tompkins (Chief Scientist); Aaron Dunwald (Chief Engineer); Allen Adams (Watchstander); Barb Blubaugh (Dafe Curator); Barbara Seekins (Watchstander); Chris Gutmacher (Geologist); Dan Hurlbert (Mechanical Technician); Dave Hogg (Electronics Technician); Dave Melendrez (Chief Mate); Greg Smith (Watchstander); Jan Morton (Geologist); Kaye Kinoshita (Navigator); Kevin O'Toole (Mechanical Technician); Lisa Gossett (Navigator); Mark Breitbart (Watchstander); Mike Casey (Watchstander); Roy Fields (Electronics Technician); Terry Ruff (Ship Captain)

  3. To whom should users address questions about the data?

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>


Why was the data set created?

These data and information are intended for science researchers, students from elementary through college, policy makers, and general public.


How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

    Date: 19-Jan-1996 (process 1 of 4)
    Navigation Data
    Converted to time format with year at start.
    
    10/21/85 KAYE DRS$DATA:[LD81NP.N]LC81NP.053;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    
    

    Person who carried out this activity:

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

    Date: 31-Oct-1998 (process 2 of 4)
    Gravity Data
    10/31/1998  /tiger/l/l1281np/grav/l-12-81-np.161_053
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    10/16/85 BARB DRS$DATA:[LC81NP.G]LC81NP.161;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    
    Input was...
    Converted to time format with year at start.
    
    10/21/85 KAYE DRS$DATA:[LD81NP.N]LC81NP.053;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    
    time, lat, long, time(sec) to nearest nav fix, data values
    

    Person who carried out this activity:

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

    Date: 20-Jun-2012 (process 3 of 4)
    Magnetics Data
    06/20/2012 carolyn l-12-81-np.220_053
    
    Reprocessed using subroutines from Susan Macmillan's
    IGRF SYNTHESIS PROGRAM <http://www.ngdc.noaa.gov/IAGA/vmod/igrf11.f>
    with IGRF-11 coeffiecients integrated into the source code.
    /infobank/programs/mag/magred11/magred11.for
    Using geodetic coordinate system (Earth shape approximated by spheriod)
    with altitude 0.0 km (for sea level).
    
    Input was...
    10/31/1998  /tiger/l/l1281np/mag/l-12-81-np.200_053
    /bear/programs/edit/automerge/automerge
    
    Converted to time format with year at start.
    
    10/07/85 CAROLYN DRS$DATA:[LC81NP.M]LC81NP.200;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    was LC81NP._.MAGSB1 on TAM306
    was LC81NP220.DAT   on VAM306
    
    Converted to time format with year at start.
    
    10/21/85 KAYE DRS$DATA:[LD81NP.N]LC81NP.053;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    
    time, lat, long, time(sec) to nearest nav fix, data values
    

    Person who carried out this activity:

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

    Date: 31-Oct-1998 (process 4 of 4)
    Bathymetry Data
    10/31/1998  /tiger/l/l1281np/bath/l-12-81-np.305_053
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    09/05/85 BECKIE DUA0:[DATA.LC81NP.B]LC81NP.305;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    This file is hand-digetized bathymetry in cor-
    rected meters in the Delgado Deep Sea Fan area.
    
    Input was...
    Converted to time format with year at start.
    
    10/21/85 KAYE DRS$DATA:[LD81NP.N]LC81NP.053;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    
    time, lat, long, time(sec) to nearest nav fix, data values
    

    Person who carried out this activity:

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

  3. What similar or related data should the user be aware of?

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>, Unknown, USGS/CMG Information Bank <http://walrus.wr.usgs.gov/infobank/>: U.S. Geological Survey (USGS) <http://www.usgs.gov> Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>, Menlo Park, CA.

    Online Links:

    Other_Citation_Details:
    Morton, Janet L., Sleep, Norman H., Normark, William R., and Tompkins, Donald H., 1987, Structure of the southern Juan de Fuca Ridge from seismic reflection records, in Special section on The southern Juan de Fuca Ridge; hydrothermal fluids, sulfides, and geophysical studies [modified]: Journal of Geophysical Research, B, Solid Earth and Planets, v. 92, no. 11, p. 11,315-11,326. Morton, Janet L., Normark, William R., Mann, Dennis M., and Tompkins, Donald H., 1987, Geology, evolution, and mineral potential of the Juan de Fuca Ridge, in Scholl, David W., Grantz, Arthur, and Vedder, John G., eds., Geology and resource potential of the continental margin of western North America and adjacent ocean basins, Beaufort Sea to Baja California: Circum-Pacific Council for Energy and Mineral Resources, Earth Science Series, v. 6, p. 537-547. Morton, Janet L., Zierenberg, Robert A., and Reiss, Carol A., eds., 1994, Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, 359 p. Morton, Janet L., Zierenberg, Robert A., and Reiss, Carol A., 1994, Geologic, hydrothermal, and biologic studies at Escanaba Trough; an introduction, in Morton, Janet L., Zierenberg, Robert A., and Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 1-18. Morton, Janet L., and Fox, Christopher G., 1994, Structural setting and interaction of volcanism and sedimentation at Escanaba Trough; geophysical results, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 21-43. Davis, Earl E., and Becker, Keir, 1994, Thermal and tectonic structure of Escanaba Trough; new heat-flow measurements and seismic-reflection profiles, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 45-64. Denlinger, Roger P., and Holmes, Mark L., 1994, A thermal and mechanical model for sediment hills and associated sulfide deposits along Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 65-75. Karlin, Robert E., and Morton, Janet L., 1994, Crustal magnetization and basement structure of Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 77-90. Normark, William R., Gutmacher, Christina E., Zierenberg, Robert A., Wong, Florence L., and Rosenbauer, Robert J., 1994, Sediment fill of Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 91-129. Karlin, Robert E., and Zierenberg, Robert A., 1994, Sedimentation and neotectonism in the SESCA area, Escanaba Trough, southern Gorda Ridge, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 131-141. Ross, Stephanie L., and Zierenberg, Robert A., 1994, Volcanic geomorphology of the SESCA and NESCA sites, Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 143-151. Davis, Alice S., Clague, David A., and Friesen, Walter B., 1994, Petrology and mineral chemistry of basalt from Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 153-170. Zierenberg, Robert A., Morton, Janet L., Koski, Randolph A., and Ross, Stephanie L., 1994, Geologic setting of massive sulfide mineralization in Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 171-197. Campbell, Andrew C., German, Chris R., Palmer, Martin R., Gamo, Toshitaka, and Edmond, John M., 1994, Chemistry of hydrothermal fluids from Escanaba Trough, Gorda Ridge, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 201-221. Bohlke, J.K., and Shanks, W.C., III, 1994, Stable isotope study of hydrothermal vents at Escanaba Trough; observed and calculated effects of sediment-seawater interaction, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 223-239. Magenheim, Andrew J., and Gieskes, Joris M., 1994, Evidence for hydrothermal fluid flow through surficial sediments, Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 241-255. Zierenberg, Robert A., and Shanks, Wayne C., III, 1994, Sediment alteration associated with massive sulfide formation in Escanaba Trough, Gorda Ridge; the importance of seawater mixing and magnesium metasomatism, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 257-277. Kvenvolden, Keith A., Rapp, John B., and Hostettler, Frances D., 1994, Hydrocarbons in sediment from Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 279-292. Koski, Randolph A., Benninger, Laura M., Zierenberg, Robert A., and Jonasson, Ian R., 1994, Composition and growth history of hydrothermal deposits in Escanaba Trough, southern Gorda Ridge, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 293-324. Grassle, J. Frederick, and Petrecca, Rosemarie F., 1994, Soft-sediment hydrothermal vent communities of Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 327-335.



How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    Identified as best available version.

  2. How accurate are the geographic locations?

    Unspecified

  3. How accurate are the heights or depths?

    Unspecified

  4. Where are the gaps in the data? What is missing?

    Start and end date/times of data

    Navigation Data (l-12-81-np.053 [SINS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198109191714340    198109191830360
    198109191838360    198109192122360
    198109192154560    198109232232550
    198109232250500    198110051416000
    198110051544000    198110051544000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Gravity Data (l-12-81-np.161_053)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198109191725180    198109220826180
    198109220909300    198109231844000
    198109231856060    198109232037360
    198109232044240    198109250845000
    198109250850300    198109271033180
    198109271038540    198109271928300
    198109271934300    198109290654420
    198109290700000    198109302234480
    198109302240300    198110010653360
    198110010817060    198110020950540
    198110020959000    198110032122420
    198110032128420    198110051533000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Magnetics Data (l-12-81-np.220_053)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198109230117550    198109231849000
    198109231901080    198109232043200
    198109232049240    198109252254560
    198109261710000    198109271038520
    198109271043560    198109271934040
    198109271939320    198109290659480
    198109290704520    198109291914160
    198109300208200    198110010658400
    198110010822040    198110020956480
    198110021004000    198110021157480
    198110021244440    198110032128040
    198110032133440    198110041533040
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Bathymetry Data (l-12-81-np.305_053)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Seismic Shots Data (l-12-81-np.420_053)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198109230303230    198109231406300
    198109231457400    198109231642080
    198109231716450    198109240124070
    198109240217440    198109242010570
    198109242054200    198109250144430
    198109250217490    198109250842500
    198109250944080    198109251331530
    198109251528530    198109252256220
    198109261920160    198109270446280
    198109270551300    198109271528450
    198109271616430    198109280159580
    198109280236080    198109282322590
    198109282329120    198109292255510
    198109292324580    198109300829190
    198109300908240    198110010129550
    198110010200180    198110011822530
    198110011857390    198110020748160
    198110020818040    198110020900310
    198110020907310    198110021127560
    198110021206220    198110031707260
    198110032010530    198110032235350
    198110032307040    198110040904400
    198110040935530    198110041530070
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    

  5. How consistent are the relationships among the observations, including topology?

    Unspecified


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:
Physical materials are under controlled on-site access.
If available, access to physical samples is described in the "WR CMG Sample Distribution Policy" at: <http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html>
Use_Constraints:
Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Physical materials are under controlled on-site access.
Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user.
This information is not intended for navigational purposes.
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

  1. Who distributes the data set? (Distributor 1 of 1)

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

  2. What's the catalog number I need to order this data set?

    Downloadable Data L-12-81-NP data set <http://walrus.wr.usgs.gov/infobank/l/l1281np/html/l-12-81-np.meta.html>

  3. What legal disclaimers am I supposed to read?

    Please recognize the U.S. Geological Survey (USGS) as the source of this information.
    Physical materials are under controlled on-site access.
    Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user.
    This information is not intended for navigational purposes.
    Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

  4. How can I download or order the data?

    • Availability in digital form:

Data format: ASCII Size: 0.4
Network links: <http://walrus.wr.usgs.gov/infobank/l/l1281np/html/l-12-81-np.nav.html>

Data format: ASCII Size: 1.9
Network links: <http://walrus.wr.usgs.gov/infobank/l/l1281np/html/l-12-81-np.grav.html>

Data format: ASCII Size: 1.3
Network links: <http://walrus.wr.usgs.gov/infobank/l/l1281np/html/l-12-81-np.mag.html>

Data format: ASCII Size: 0.1
Network links: <http://walrus.wr.usgs.gov/infobank/l/l1281np/html/l-12-81-np.bath.html>

Data format: ASCII Size: 2.8
Network links: <http://walrus.wr.usgs.gov/infobank/l/l1281np/html/l-12-81-np.seis.html>

  • Cost to order the data: None


  • Who wrote the metadata?

    Dates:
    Last modified: 01-Nov-2013
    Metadata author:
    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

    Metadata standard:
    FGDC Content Standards for Digital Geospatial Metadata <http://www.fgdc.gov/> (FGDC-STD-001-1998 <http://www.its.nbs.gov/nbs/meta/meta.html>)


    Generated by mp version 2.9.13 on Fri Nov 1 13:59:17 2013