Isopachs--Salt Point to Drakes Bay, California

This part of DS 781 presents data for the isopachs for the Salt Point to Drakes Bay, California, region. The vector data file is included in "Isopachs_SaltPointToDrakesBay.zip," which is accessible from http://pubs.usgs.gov/ds/781/SaltPointToDrakesBay/data_catalog_SaltPointToDrakesBay.html. As part of the USGS's California Seafloor Mapping Program, a 20-m grid ofsediment thickness for the seafloor within the 3-nautical-mile limit of California's State Waters between Salt Point and Drakes Bay was generated from seismic-reflection data collected in 2009 (USGS activity (S-8-09-NC) supplemented with outcrop and geologic structure from sheet DS 781. The resulting grid covers an area of approximately 600 sq km. The volume of sediment accumulated since the Last Glacial Maximum is approximately 9,000 million cubic meters. Contours at 2.5-meter intervals were derived from this grid.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier USGS:b2412ba3-4c45-4bbe-ba92-4362f39cdba2
metadata_type geospatial
modified 20211021
old-spatial -123.473993, 37.868433, -122.762732, 38.640196
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 34acefcb333dc91327e5c2924eb862134d36c506
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-123.473993, 37.868433], [-123.473993, 38.640196], [ -122.762732, 38.640196], [ -122.762732, 37.868433], [-123.473993, 37.868433]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • bodega-bay
  • ckan
  • coastal-geology
  • environment
  • geo
  • geoscientificinformation
  • geospatial-datasets
  • geoss
  • maps-and-atlases
  • marin-county
  • marine-geology
  • national
  • north-america
  • oceans
  • pacific-ocean
  • point-reyes
  • sediment-isopach
  • sediment-thickness
  • seismic-reflection-data
  • seismic-reflection-methods
  • sonoma-county
  • state-of-california
  • stratigraphic-thickness
  • united-states
  • usgs-b2412ba3-4c45-4bbe-ba92-4362f39cdba2
isopen False
license_id notspecified
license_title License not specified
maintainer PCMSC Science Data Coordinator
maintainer_email pcmsc_data@usgs.gov
metadata_created 2025-11-22T03:23:22.881570
metadata_modified 2025-11-22T03:23:22.881574
notes This part of DS 781 presents data for the isopachs for the Salt Point to Drakes Bay, California, region. The vector data file is included in "Isopachs_SaltPointToDrakesBay.zip," which is accessible from http://pubs.usgs.gov/ds/781/SaltPointToDrakesBay/data_catalog_SaltPointToDrakesBay.html. As part of the USGS's California Seafloor Mapping Program, a 20-m grid ofsediment thickness for the seafloor within the 3-nautical-mile limit of California's State Waters between Salt Point and Drakes Bay was generated from seismic-reflection data collected in 2009 (USGS activity (S-8-09-NC) supplemented with outcrop and geologic structure from sheet DS 781. The resulting grid covers an area of approximately 600 sq km. The volume of sediment accumulated since the Last Glacial Maximum is approximately 9,000 million cubic meters. Contours at 2.5-meter intervals were derived from this grid.
num_resources 2
num_tags 27
title Isopachs--Salt Point to Drakes Bay, California