Geologic Quadrangles - Search for gQuad USGS Geologic Quadrangles are detailed geologic maps depicting areas of special importance to the solution of geologic problems. Search Land Matters for 1,784 GQ maps. TIP: Add a State, County or Quad name to narrow your search

SELECT the National Geologic Map Index Page from the USGS webpage to download the files.

Folios of the Geologic Atlas - Search for gFolio 227 of these detailed geologic reports were done between 1894 and 1945. Each folio includes topographic and geologic maps for the quad. TIP: Add a State, County or Quad name to narrow your search

SELECT the National Geologic Map Index Page from the USGS webpage to download the files.

Geology is the scientific study of the earth, the material of which it is made, the processes that act on these materials, the products formed, and the history of the planet and its life forms since origin.

The study of Geology can help us understand how the Grand Canyon was formed, why a mudslide occurred, or where to search for mineral resources in the earth.  

Search our Geology Library to learn the basics and discover what the earth has to tell you about your own backyard. It is almost certain that there is a geologic map of some type that covers your neighborhood. Land Matters can help you find it...and understand it.

In the Land Status Library

There is a huge amount of geologic information available in the public domain. Maps and reports have been generated by the US Geologic Survey since its inception and provide excellent sources of information on almost every corner of the country. Here in the Land Matters Geology Library you will find;

Basic Geology Texts

Historic Geologic Maps & Reports

Current Geologic Maps & Reports

Guides to help you read geologic maps.

Articles to help you understand the geology around you.

Links to comprehensive resources for detailed research

Search the Library and find out about the geologic make up your area. Search by State, or County name or look for a Geologic Map of a National Park or Wilderness area before your visit.

To BROWSE the entire Earth Sciences Library:

Enter "EARTH" into the search box.

Land Matters. Learn its history.