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Geological & Planetary Sciences (GPS): Maps & Mapping

Welcome to Geological & Planetary Sciences Library services at Caltech!

GPS Library Map Room

The Map Room is located next to the GPS Library at 207 N. Mudd. (Access requires the GPS Division key).

Please contact us to make an appointment if you are from a non-GPS Division.

The Map Room houses geologic and topographic maps of California, Arizona, and Nevada. We also have the Dibblee collection of geologic maps.

We also have the CA Division of Mines and Geology (CDMG) and USGS Open-File Reports, as well as hundreds of QG-Series, I-Series, and MF-Series maps from the USGS.

Other maps of various locations around the United States and the world are also housed here. With the exception of the topographic maps, most of the items are cataloged and searchable in our catalog.

We have an HP large-scale printer for your convenience in the TechHub. You can submit large-scale prints (maximum of 36 in. width). The cost is $8.00 per linear foot. Please visit this link to for more information and to submit print jobs.

Interactive Map of Caltech GPS-division Theses

This map shows the coordinates of content in CaltechDATA associated with theses from the Caltech Division of Geological and Planetary Science. Data included from historic theses are supplemental pocket contents such as maps and drawings.

Scrolling inside the map will zoom and dragging will move the map. Click on any point or bounding box to see the original item in CaltechDATA.

Send us an email and we can get your thesis on the map.

Google Earth

Google Earth is a powerful application that provides search capabilities and the ability to pan, zoom, rotate, and tilt the view of the Earth. It also offers tools for creating new data layers. However, it's not a Geographic Information System (GIS).

It is free and available to download for Windows, macOS and Linux systems. Google Earth for Web is a browser-based version and Google Earth on mobile is an app. 

Additional Google Earth applications include:

  • Earth Studio - an animation tool for Google Earth's satellite and 3d Imagery.
  • Earth Engine - combines a multi-petabyte catalog of satellite imagery and geospatial datasets with planetary-scale analysis capabilities and makes it available for scientists, researchers, and developers to detect change, map trends, and quantify differences on the Earth's Surface. 
  • Earth VR - Explore the world from totally new perspectives. Stroll the streets of Tokyo, soar over Yosemite, or teleport across the globe. 


Citing Maps and other cartographic resources

USGS Resources

Online Map Resources

Online Map Resources - California