{
 "culture": "en-US",
 "name": "mapunitpolys_quat",
 "guid": "FA90015E-3DCF-4592-9BC1-E6CC34734356",
 "catalogPath": "",
 "snippet": "Polygons that record distribution of map units (including water, snowfields, glaciers, and unmapped areas) on the particular map horizon.",
 "description": "This layer is assembled procedurally from GeMS (NCGMP, 2020) geologic maps. The data in this layer mimics the structure and definitions provided by the GeMS data standard, with the exception that citation information (e.g., from a DataSources table), information from the original published descriptions of map units, information pertaining to national synthesis map units (e.g., Johnstone and others, 2020), standardized age information, and alternative polygon colors are joined onto the spatial data for ease of use here. The 'symbol' field is renamed 'fgdc_symbol' to make it explicit which cartographic standard is used for symbolization (USGS, 2006). Johnstone, S.A., Colgan, J.P., and Roe, W.P., 2025, A synthesis engine for constructing geologic maps of the United States: U.S. Geological Survey Data Report 1210, 36 p., https://doi.org/10.3133/dr1210. National Cooperative Geologic Mapping Program [NCGMP], 2020, GeMS (Geologic Map Schema)\u2014A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods 11-B10, 74 p., https://doi.org/10.3133/tm11B10. U.S. Geological Survey [USGS], 2006, FGDC digital cartographic standard for geologic map symbolization (PostScript implementation): U.S. Geological Survey Techniques and Methods 11-A2, at https://doi.org/10.3133/tm11A2.",
 "summary": "Polygons that record distribution of map units (including water, snowfields, glaciers, and unmapped areas) on the particular map horizon.",
 "title": "mapunitpolys_quat",
 "tags": [
  "geology",
  "geologic map",
  "natural resources",
  "natural hazards"
 ],
 "type": "Feature Service",
 "typeKeywords": [
  "ArcGIS",
  "ArcGIS Server",
  "Data",
  "Feature Access",
  "Feature Service",
  "providerSDS",
  "Service"
 ],
 "thumbnail": "thumbnail/thumbnail.png",
 "url": "",
 "extent": [
  [
   -125.381241399313,
   24.3963123002838
  ],
  [
   -66.8854433292997,
   49.3844874393866
  ]
 ],
 "minScale": 0,
 "maxScale": 1.7976931348623157E308,
 "spatialReference": "WGS_1984_Web_Mercator_Auxiliary_Sphere",
 "accessInformation": "The compilation can be cited as: Johnstone, S.A., Colgan, J.P., and Roe, W.P., 2025, A synthesis engine for constructing geologic maps of the United States: U.S. Geological Survey Data Report 1210, 36 p., https://doi.org/10.3133/dr1210. Platt, B.W., Colgan, J.P., Hirtz, J.A.M., Johnstone, S.A., Campos, J.-M., and Roe, W.P., 2025, Cooperative National Geologic Map\u2014Pre-Quaternary geology: U.S. Geological Survey data release, https://doi.org/10.5066/P147SGSS.",
 "licenseInfo": "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 for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. These map services and data are free and in the public domain. There are no restrictions; however, we request the citations above be included. Additionally, appropriate citations for each record are included in the attribute table for that record.",
 "portalUrl": ""
}