Geology professor Shawn Willsey takes you on a tour of the "petrified watermelons" or Melon Gravels, the huge boulders deposited by the massive Bonneville Flood of the Pleistocene. Learn why the size of the boulders varies and how the boulders were shaped by water and sediment. For a more comprehensive presentation of the Bonneville Flood, go to
• The fascinating story ...
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Shawn Willsey
College of Southern Idaho
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Twin Falls, ID 83303
Approximate GPS Locations:
Intro and sign: 42.97521, -115.15911
Cliff: 42.94861, -115.16055
Boulder Bar: 42.95074, -115.16303
00:00 Introduction to Melon Gravels
02:38 Huge boulders atop basalt cliffs
08:40 Boulder bar near Snake River
11:56 Up close view of asymmetric boulder
12:17 Explanation diagram
Негізгі бет Ғылым және технология HUGE Boulders Transported by a Megaflood in Southern Idaho: a geologist's tour
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