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Episode Info:

Description:

In episode 8.3 Bryan speaks with Joel Kane, seasonal park ranger and geologist at Grand Canyon National Park about how the Grand Canyon is one of the best geology classrooms in the world showing 2 billion years of geologic history visible to visitors. 

Discussion includes the following:

· How was the canyon formed and why are we able to see so much of earth’s history (2:35)

· Vishnu basement rocks at bottom of the Canyon and why named after Hindu God (3:56)

· Plate tectonics and recycling rocks s(6:01)

· Colorado River and pace of erosion (7:34)

· The rocks of the Grand Canyon tell a story including supercontinents Pangea and Rodinia (8:30)

· Fossils at the Grand Canyon (14:54)

· The Trail of Time interpretive exhibit (17:53)

· Changes in Grand Canyon in human lifetime (20:38)

· Joel’s special moment and Navajo Sandstone (24:35)

Resources:

Grand Canyon – Geology

Grand Canyon – Geologic Formations

Trail of Time at Grand Canyon National Park

Everybody's National Parks Episode 3.4 Zion National Park: Geology

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