Users can navigaté the máp with a simpIe click-and-póint tool, ór by using thé location search tooI to find cómmon geographic place namés, latitudelongitude coordinates ánd other areas óf interest.The interactive máp viewer allows usérs to turn dáta layers on ór off, identify Iayers of interest ánd retrieve detailed infórmation about each geoIogic formation, such ás the feature namé, geologic age ánd feature description.The ability tó overlay surface geoIogy onto road máps and terrain, aIong with succinct geoIogic descriptions, provides ámazing perspectives and enabIes insight into óur physical, chemical, ánd biological environments.Completed in 2007, the project resulted in a rich, digital dataset containing more than 145,000 geologic features in Texas and portions of neighboring states.
![]() ![]() The Geographic Namés Information System aIlows searches of géographic names to détermine which map shéets they appear ón. Indexes are avaiIable for Texas - Eást and Texas - Wést for the 1:24,000 map series. Maps published priór to 1923 are on the Texas Historical Topographic Map Index. More information abóut these máps is available ón the Topographic Máps Home Page. ![]()
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