This Geologic map of Oregon consists of semi-transparent colored polygons that cover the entire state.
Click on a colored area to get the applicable geologic unit symbol. Then open up the Legend to look up the symbol and the characteristics of that geologic unit.
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Credits 1991 Geologic Map of Oregon produced by the USGS at a 1:500 scale (Walker, GW and MacLeod NS) and updated in 1992 and 1993. |
The European Digital Archive on Soil Maps of the World (EuDASM) is a massive repository of scanned soil and geologic maps covering large areas of Africa, Asia, Canada, Caribbean Islands, Europe, Latin America, and the United States. The maps were archived over the years by ISRIC – World Soil Information and were recently been scanned and made available online. It looks like there are 1,000’s of maps in the EuDASM digital library.
An engineer working in Kenya for Engineers Without Borders contacted me recently about converting some of the maps into overlays for Google Earth, which I was happy to do. These maps can be accessed from the link at the bottom of this post.
I’m not sure how much of a demand there is out there for Google Earth versions of these maps. It would be great if they were all converted into Google Earth overlays, but that would be a huge undertaking. In the meantime, I’d be more than happy to help out any other individuals or groups out there that could benefit from having some of these maps available in Google Earth. I don’t have the resources or time to do all of the maps in the archive, but I can certainly help out with regional efforts. If you have a specific group of maps that you’d like to see added to the Google Earth overlays, contact me.
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Credits European Digital Archive of Soil Maps (EuDASM). 2005. Maps are holdings of ISRIC. Maps are made available by the European Commission – Joint Research Centre through http://eusoils.jrc.it/esdb_archive/EuDASM/EUDASM.htm |
This collection contains 28 1×2 degree geologic maps covering the entire state of California.
The 1:250,000 scale maps were produced in the 1960s and 1970s by the USGS and State of California Division of Mines and Geology.
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Credits |
Highly detailed digital geologic maps of the US states (not including Alaska and Hawaii) with consistent descriptions (lithology, age, etc) from state to state. The original geologic data was from various sources and compiled by the USGS into KML format.
Click on a polygon to bring up information about that geologic unit. From there you can also access a more detailed description provided online by the USGS.
Each state is covered by a separate map and the size of the maps vary (Texas is 26 megabytes!!!) so give them time to load when you select a state. It may also take a minute or two for Google Earth to process the state map after it downloads. Google Earth may appear to have locked up as it’s crunching the data. You might also want to turn off the Terrain layer if the terrain bleeds through the map.
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Credits |
The 1:2,500,000 scale Geologic Map for the United States produced by the USGS (King, Beikman and Edmonston) dated 1974. It does not include AK or HI.
This is based on a 77 meg JPG produced by the USGS. The Google Earth version retains the quality and resolution of the original.
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KML Content Created By Original Data |
