Geologic maps are incredibly beautiful. ... This map's legend has some other neat symbols for dikes, calderas, ash, glaciers, and historical glacier extents. Great Smoky Mountains National Park.

March 23, 1769 marks the birthday of pioneering stratigrapher William Smith, who is credited creating the first geological map, however like many other great accomplishments also Smith's idea of ...

On January 29, 1934, Jean Bosquet of the L.A. Times reported that Shufelt, a geological engineer, had discovered a secret lizard city far underground using Native American lore and “radio X-ray.” ...

It took 16 years and data from four orbiting spacecraft to assemble, but the U.S. Geological Survey’s new map of Mars is awesome. In beautiful color and excellent detail, the map shows the ...

The new bedrock map of Vermont is a chronology of this state expressed in stone as old as 1.4 billion years, and it is an emerging tool for making informed decisions about everything from highways ...