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Há 2 dias · National Geologic Map Database. Home Catalog Lexicon MapView TopoView New Mapping Geochronology Standards Comments. USGS (U.S. Geological Survey) National Geologic Map Database.
Há 4 dias · National Geologic Map Database"GeMS" — Geologic Map Schema. In 2014-2017, this database design was extensively reviewed and test-implemented by the U.S. Geological Survey and the State Geological Surveys. During this process, certain modifications and clarifications were made to the now-superceded version, NCGMP09v1.1.
25 de abr. de 2024 · Links to general, historical and topographic maps and other raster maps as well as interactive atlases. USGS TopoView. View, select and download current and historical USGS topographic maps at a number of different scales. USGS Store. Download the following series of USGS topographic maps for free.
Há 5 dias · The latest version of TopoView includes both current and historical maps and is full of enhancements based on hundreds of your comments and suggestions. It includes scales from 24K to 250K. Maps can be downloaded as GeoPDF, GeoTIFF, JPEG, KMZ.
Há 5 dias · GIS Data. USGS is a primary source of geographic information system (GIS) data. Our data and information is presented in spatial and geographic formats, including The National Map, Earth Explorer, GloVIS, LandsatLook, and much more. Explore GIS Data Maps. Filter Total Items: 9481.
Há 4 dias · 3DEP Elevation Viewer. U.S. Geological Survey (USGS) An application enabling the dynamic display of US Digital Elevation Models (DEMs) that are published by USGS on The National Map. The application is a dynamic display of different renderings of the data including contours, multiple hillshade maps, slope, and aspect.
Há 4 dias · Two notable mechanisms now exist in the United States to promote the coordination of widely-accepted standards: 1) the National Geologic Mapping Act of 1992 stipulates that necessary standards be developed by USGS and the Association of American State Geologists (AASG) to support the National Geologic Map Database (NGMDB); and 2) the Federal ...
