New to geology, want to learn some basic concepts, or just need a geology refresher? Join geology professor Shawn Willsey for this new series as he presents the same lectures as his GEOL 101 (Physical Geology) course. These videos are for everyone.
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00:00 intro
03:38 why geology is important
09:27 Earth's internal layers
22:40 how we know
27:03 geologic time