Geology and geomorphology--Monterey Canyon and Vicinity Map Area, California

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Frequently anticipated questions:

What does this data set describe?

Title:
Geology and geomorphology--Monterey Canyon and Vicinity Map Area, California
Abstract:
This part of DS 781 presents data for the geologic and geomorphic map of Monterey Canyon and Vicinity, California. The vector data file is included in "Geology_MontereyCanyon.zip," which is accessible from http://pubs.usgs.gov/ds/781/MontereyCanyon/data_catalog_MontereyCanyon.html. These data accompany the pamphlet and map sheets of Dartnell, P., Maier, K.L., Erdey, M.D., Dieter, B.E., Golden, N.E., Johnson, S.Y., Hartwell, S.R., Cochrane, G.R., Ritchie, A.C., Finlayson, D.P., Kvitek, R.G., Sliter, R.W., Greene, H.G., Davenport, C.W., Endris, C.A., and Krigsman, L.M. (P. Dartnell and S.A. Cochran, eds.), 2016, California State Waters Map Series—Monterey Canyon and Vicinity, California: U.S. Geological Survey Open-File Report 2016–1072, 48 p., 10 sheets, scale 1:24,000, https://doi.org/10.3133/ofr20161072.
Marine geology and geomorphology were mapped in the Monterey Canyon and Vicinity map area from approximate Mean High Water (MHW) across the continental shelf, as well as in Monterey Canyon to a water depth of about 1,750 m. This map area includes much of central Monterey Bay, extending just beyond the limit of California’s State Waters (note that the California’s State Waters limit, which generally is 3 nautical miles [5.6 km] from shore, extends farther offshore (as much as 12 nautical miles) between Santa Cruz and Monterey, so that it encompasses all of Monterey Bay. Offshore geologic units were delineated on the basis of integrated analyses of adjacent onshore geology with multibeam bathymetry and backscatter imagery, seafloor-sediment and rock samples, digital camera and video imagery, and high-resolution seismic reflection profiles. Aerial photographs taken in multiple years were used to map the nearshore area (0 to 10 m water depth) and to link the offshore and onshore geology.
Supplemental_Information:
Additional information about the field activities from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=SN109MB https://cmgds.marine.usgs.gov/fan_info.php?fan=S0611MB https://cmgds.marine.usgs.gov/fan_info.php?fan=S709MB https://cmgds.marine.usgs.gov/fan_info.php?fan=S2210MB
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology.
  1. How might this data set be cited?
    Maier, Katherine L., Hartwell, Stephen R., Johnson, Samuel Y., Davenport, Clifton W., and Greene, H. Gary, 2016, Geology and geomorphology--Monterey Canyon and Vicinity Map Area, California: Data Series DS 781, U.S. Geological Survey, Reston, VA.

    Online Links:

    This is part of the following larger work.

    Golden, Nadine E., 2013, California State Waters Map Series Data Catalog: Data Series DS 781, U.S. Geological Survey, Reston, VA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -122.06
    East_Bounding_Coordinate: -121.78
    North_Bounding_Coordinate: 36.84
    South_Bounding_Coordinate: 36.69
  3. What does it look like?
    https://www.sciencebase.gov/catalog/file/get/5570970be4b0d9246a9fd28a?f=__disk__c1%2F70%2F94%2Fc17094eac687179e98710a022d04ae7bd98120a1&allowOpen=true (JPEG)
    Geology of Monterey Canyon and Vicinity map area, California
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 2006
    Ending_Date: 2012
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: vector digital data
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • GT-polygon composed of chains (822)
    2. What coordinate system is used to represent geographic features?
      The map projection used is WGS 1984 UTM Zone 10N.
      Projection parameters:
      Scale_Factor_at_Central_Meridian: 0.9996
      Longitude_of_Central_Meridian: -123.0
      Latitude_of_Projection_Origin: 0.0
      False_Easting: 500000.0
      False_Northing: 0.0
      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.0001
      Ordinates (y-coordinates) are specified to the nearest 0.0001
      Planar coordinates are specified in Meter
      The horizontal datum used is D WGS 1984.
      The ellipsoid used is WGS 1984.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    MapUnitPolys
    Polygons representing geologic / geomorphic map units (Source: This report)
    OBJECTID
    Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    Shape
    Feature geometry. (Source: ESRI) Coordinates defining the features.
    MapUnitAbbrev
    Map Unit abbreviation (Source: This report)
    ValueDefinition
    afArtificial fill
    QmsMarine nearshore and shelf deposits
    QmscCoarse-grained marine nearshore and shelf deposits
    QmsfFine-grained marine shelf deposits
    QmsdMarine shelf scour depressions
    QmslMarine shelf sediment lobes
    Qms/TpSediment-covered Purisima Formation
    Qmsf/TpSediment-covered Purisima Formation
    QmshMarine shelf hummocky seafloor
    QcwSubmarine canyon wall deposits
    QcfaSubmarine canyon axial channel deposits
    Qwp3Submerged wave-cut platform
    Qwpr3Submerged wave-cut platform riser
    Qwp2Submerged wave-cut platform
    Qwpr2Submerged wave-cut platform riser
    Qwp1Submerged wave-cut platform
    Qwpr1Submerged wave-cut platform riser
    QcfPaleo-channel and canyon fill
    TpPurisima Formation
    QchcSubmarine canyon-head channel deposits
    QchrSubmarine canyon head inter-channel ridges
    QcpcfSubmarine canyon proximal active axial channel fill
    Qccf3Submarine canyon active axial channel fill
    Qccf2Submarine canyon abandoned axial channel fill
    Qcb2Submarine canyon inner bench
    Qcb1Submarine canyon outer bench
    QmscpSubmarine canyon platform
    Qccf1Submarine canyon abandoned axial channel fill
    QmscwSubmarine canyon walls
    Qctf2Tributary submarine canyon fill, Salinas River paleo-channel
    Qctf1Tributary submarine canyon fill, Pajaro River paleo-channels
    QlsmLandslides, marine, undivided
    Qlsm3Landslides, marine, third generation
    Qlsm2Landslides, marine, second generation
    Qlsm1Landslides, marine, first generation
    QlsmbLandslide blocks, marine, undivided
    Qlsmb1Granodiorite block
    QcfcwPaleo-channel and canyon fill, undivided
    TpcwPurisima Formation, undivided
    TmcwMonterey Formation
    TscwSandstone, undivided
    TvcwTertiary bedrock containing intrusive volcanics, sedimentary host rock, and Cretaceous granodiorite
    KgcwGranodiorite
    MapUnit
    short description of map unit (Source: This report) text description of map unit
    Shape_Length
    Length of feature in internal units. (Source: ESRI) Positive real numbers that are automatically generated.
    Shape_Area
    Area of feature in internal units squared. (Source: ESRI) Positive real numbers that are automatically generated.
    RuleID
    Representation rule identifier (Source: This report) This field contains the representation rule in the ArcGIS file geodatabase which applies a solid color fill of a specified CMYK value to each polygon. Representation rules have the same name as the map unit abbreviation.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Katherine L. Maier
    • Stephen R. Hartwell
    • Samuel Y. Johnson
    • Clifton W. Davenport
    • H. Gary Greene
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Attn: PCMSC Science Data Coordinator
    2885 Mission Street
    Santa Cruz, CA
    US

    831-427-4747 (voice)
    pcmsc_data@usgs.gov

Why was the data set created?

To expand geologic mapping to the seafloor within the California's State Waters, to update coastal geologic mapping, and to contribute to a uniform regional geologic database. Additionally, to provide a geologic map for the public and geoscience community to aid in assessments and mitigation of geologic hazards in the Monterey Bay and Vicinity region and to provide sufficient geologic information for land-use and land-management decisions both onshore and offshore.

How was the data set created?

  1. From what previous works were the data drawn?
    2m bathymetry (source 1 of 9)
    Dartnell, Peter, Ritchie, Andrew C., Finlayson, David P., and Kvitek, Rikk G., 2016, BathymetryA Hillshade [2m]--Monterey Canyon and Vicinity, California: Data Series DS 781, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    See metadata for ("BathymetryAHS_2m_MontereyCanyon_metadata.txt") in DS 781 for source data and postprocessing/reprocessing information.
    Type_of_Source_Media: digital file of gridded bathymetry data (ArcInfo GRID)
    Source_Contribution: Gridded bathymetry data
    5m bathymetry (source 2 of 9)
    Dartnell, Peter, Ritchie, Andrew C., Finlayson, David P., and Kvitek, Rikk G., 2016, BathymetryB Hillshade [5m]--Monterey Canyon and Vicinity, California: Data Series DS 781, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    See metadata for ("BathymetryBHS_5m_MontereyCanyon_metadata.txt") in DS 781 for source data and postprocessing/reprocessing information.
    Type_of_Source_Media: digital file of gridded bathymetry data (ArcInfo GRID)
    Source_Contribution: Gridded bathymetry data
    backscatterA (source 3 of 9)
    Dartnell, Peter, Ritchie, Andrew C., Finlayson, David P., and Kvitek, Rikk G., 2016, BackscatterA [USGS SWATH]--Monterey Canyon and Vicinity, California: Data Series DS 781, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    See metadata for ("BackscatterA_USGS_Swath_MontereyCanyon_metadata.txt") in DS 781 for amplitude source data and postprocessing/reprocessing information.
    Type_of_Source_Media: digital file of gridded amplitude data (ArcInfo GRID)
    Source_Contribution: Gridded amplitude data
    backscatterB (source 4 of 9)
    Dartnell, Peter, Ritchie, Andrew C., Finlayson, David P., and Kvitek, Rikk G., 2016, BackscatterB [EM300]--Monterey Canyon and Vicinity, California: Data Series DS 781, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    See metadata for ("BackscatterB_EM300_MontereyCanyon_metadata.txt") in DS 781 for amplitude source data and postprocessing/reprocessing information.
    Type_of_Source_Media: digital file of gridded amplitude data (ArcInfo GRID)
    Source_Contribution: Gridded amplitude data
    backscatterC (source 5 of 9)
    Dartnell, Peter, Ritchie, Andrew C., Finlayson, David P., and Kvitek, Rikk G., 2016, BackscatterC [7125]--Monterey Canyon and Vicinity, California: Data Series DS 781, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    See metadata for ("BackscatterC_7125_MontereyCanyon_metadata.txt") in DS 781 for amplitude source data and postprocessing/reprocessing information.
    Type_of_Source_Media: digital file of gridded amplitude data (ArcInfo GRID)
    Source_Contribution: Gridded amplitude data
    backscatterD (source 6 of 9)
    Dartnell, Peter, Ritchie, Andrew C., Finlayson, David P., and Kvitek, Rikk G., 2016, BackscatterD [CSUMB Swath]--Monterey Canyon and Vicinity, California: Data Series DS 781, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    See metadata for ("BackscatterD_CSUMB_Swath_MontereyCanyon_metadata.txt") in DS 781 for amplitude source data and postprocessing/reprocessing information.
    Type_of_Source_Media: digital file of gridded amplitude data (ArcInfo GRID)
    Source_Contribution: Gridded amplitude data
    seismic (source 7 of 9)
    Sliter, Ray W., Johnson, Samuel Y., Watt, Janet T., Scheirer, Daniel S., and Triezenberg, Peter J., 2013, High-resolution seismic-reflection and marine-magnetic data from Offshore Central California--San Gregorio to Point Sur: Open-File Report 2013-1071, U.S. Geological Survey, Menlo Park, CA.

    Online Links:

    Type_of_Source_Media: ASCII lat/long shot point files
    Source_Contribution:
    Digital seismic data used to interpret subsurface geologic structure
    sediment (source 8 of 9)
    Reid, Jane A., Reid, Jamey M., Jenkins, Chris J., Zimmerman, Mark, Williams, S. Jeffress, and Field, Michael E., 2006, usSEABED—Pacific Coast (California, Oregon, Washington) offshore surficial-sediment data release: Data Series DS 182, U.S. Geological Survey, Menlo Park, CA.

    Online Links:

    Type_of_Source_Media: Esri project files, csv files
    Source_Contribution:
    seafloor sediment and rock samples used to interpret seafloor geology
    imagery (source 9 of 9)
    Golden, Nadine E., and Cochran, Guy R., 2013, California Seafloor Mapping Program video and photograph portal: data release DOI:10.5066/F7J1015K, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

    Online Links:

    Type_of_Source_Media: seafloor video and photographs
    Source_Contribution:
    seafloor video and photographs used to interpret seafloor geology
  2. How were the data generated, processed, and modified?
    Date: 2012 (process 1 of 5)
    Offshore geologic units were delineated on the basis of integrated analyses of adjacent onshore geology with multibeam bathymetry and backscatter imagery, seafloor-sediment and rock samples, digital camera and video imagery, and high-resolution seismic-reflection profiles. Map unit polygons were digitized over underlying 2-meter and 5-meter base layers developed from multibeam bathymetry and backscatter data. Derivatives such as slope and curvature were generated from source rasters. Interpreted rasters include amplitude, hillshaded bathymetry (using various illumination angles and vertical exaggeration), slope, and curvature. Curvature was decomposed into profile and plan curvature for analysis purposes. Data sources used in this process:
    • 2m bathymetry
    • 5m bathymetry
    • backscatterA
    • backscatterB
    • backscatterC
    • backscatterD
    • sediment
    • imagery
    • seismic
    Date: 2014 (process 2 of 5)
    The mapped area was extended to the shoreline by using digital orthophotos to interpret the region between the inner edge of the multibeam bathymetry and the approximate shoreline. The approximate shoreline is from the NOAA Shoreline Mapping Program accessed at (http://www.ngs.noaa.gov/NSDE/). The resulting boundary was transformed to WGS 84 UTM Zone 10 North in ArcGIS 10 using the NAD83 to WGS84 (ITRF00) transformation algorithm.
    Date: 27-Nov-2018 (process 3 of 5)
    Metadata was modified to bring up to current USGS PCMSC standards. Information for accompanying Open-File Report added to Abstract and Cross Reference sections. Point of Contact information was updated. Keywords were added and refined. Details about different Network Resource Name links was given in the Access Instructions section. Minor typos were corrected. No data information was changed. Person who carried out this activity:
    Susan A Cochran
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    2885 Mission St.
    Santa Cruz, CA
    United States

    831-460-7545 (voice)
    scochran@usgs.gov
    Date: 19-Oct-2020 (process 4 of 5)
    Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 05-Apr-2022 (process 5 of 5)
    Performed minor edits to the metadata to correct typos. No data were changed Person who carried out this activity:
    U.S. Geological Survey
    Attn: Susan A. Cochran
    Geologist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7545 (voice)
    scochran@usgs.gov
  3. What similar or related data should the user be aware of?
    Dartnell, Peter, Maier, Katherine L., Erdey, Mercedes D., Golden, Nadine E., Dieter, Bryan E., Golden, Nadine E., Johnson, Samuel Y., Hartwell, Stephen R., Cochrane, Guy R., Ritchie, Andrew C., Finlayson, David P., Kvitek, Rikk G., Sliter, Ray W., Greene, H. Gary, Davenport, Clifton W., Endris, Charles A., and Krigsman, Lisa M., 2012, California State Waters Map Series--Monterey Canyon and Vicinity, California: Open-File Report 2016-1072, U.S. Geological Survey, Reston, VA.

    Online Links:

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

  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
    Polygons were primarily mapped by one of the following methods: (1) interpretation of 2-meter- or 5-meter-resolution hillshaded bathymetry data from bathymetric lidar and sonar surveys; (2) interpretation of 2-meter-resolution amplitude (backscatter) data from bathymetric sonar surveys; (3) interpretation of 2-meter interpretation of seismic-reflection-profile data. Map Unit contact locations were interpreted typically at a scale of between 1:1,000 and 1:2,000 using the above base data. Bathymetric sonar and LiDAR data have a horizontal accuracy greater than the resolution of the base data. Map unit contacts were digitized by heads-up screen digitization of line data on 2-meter-resolution DEMs described above. Horizontal accuracy is estimated to be between 2 and 5 meters depending on how clearly contacts can be resolved. Most digitized positions on the map are estimated to have better than 5 m horizontal accuracy. There is no elevation data in the database.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Data are complete. No offshore features that could be accurately identified and represented at the compilation scale of 1:24,000 were eliminated or generalized. The smallest area represented is approximately 100 square meters. All geospatial database elements are attributed.
  5. How consistent are the relationships among the observations, including topology?
    Map elements were visually checked for overshoots, undershoots, duplicate features, and other errors by the lead authors and by the GIS technician(s) who created the digital database. Review drafts of the map were reviewed internally by at least two other geologists for consistency with basic geologic principles and general conformity to USGS mapping standards.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints none
Use_Constraints USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. This information is not intended for navigation purposes.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - ScienceBase
    Denver Federal Center, Building 810, Mail Stop 302
    Denver, CO

    1-888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? The .zip file (Geology_MontereyCanyon.zip) includes the .cpg, .dbf, .prj, .sbn, .sbx, .shp, and .shx files, as well as FGDC-compliant metadata for the geology layer in the Monterey Canyon and Vicinity map area, California.
  3. What legal disclaimers am I supposed to read?
    Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
  4. How can I download or order the data?
  5. What hardware or software do I need in order to use the data set?
    The downloadable data file has been compressed with the "zip" command and can be unzipped with Winzip (or other tool) on Windows systems. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing an Esri ArcMap TIFF. Users should download the ArcGIS Project File, MontereyCanyonGIS.mxd.zip, a compressed (with the "zip" command) version of the ArcMap document (.mxd) that has all the data layers loaded in the table of contents for "Monterey Canyon" and has all the data symbolized as on the SIM map sheets. Download and save this ArcGIS project file, including all data layers, to the directory the user has created for this G

Who wrote the metadata?

Dates:
Last modified: 05-Apr-2022
Metadata author:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Attn: PCMSC Science Data Coordinator
2885 Mission Street
Santa Cruz, CA
US

831-427-4747 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/SeriesReports/DS_DDS/DS_781/XMLs_on_ScienceBase/F7XD0ZQ4_MontereyCanyon/Geology_MontereyCanyon_metadata.faq.html>
Generated by mp version 2.9.51 on Tue Apr 5 16:05:05 2022