Creative Commons Attribution

​An Introduction to Geology by Chris Johnson, Matthew D. Affolter, Paul Inkenbrandt, Cam Mosher is licensed under CC BY-NC-SA 4.0

Natural Disasters and Human Impacts by R. Adam Dastrup, MA, GISP is licensed under CC BY-NC-SA 4.0

Physical Geology – 2nd Edition by Steven Earle is licensed under CC BY-NC-SA 4.0

Geology by Lumen Learning is licensed under CC BY-NC-SA 4.0

Earth Science by Lumen Learning is licensed under CC BY-NC-SA 4.0

References

JetStream by National Oceanic and Atmospheric Administration is Public Domain