The Rest of the Columbia Geology Tour

The tour is a seven-part series, in which Columbia Professor David Walker takes us around the campus to explore the geological history embedded in Columbia’s architecture. (First posted on the Earth Institute’s State of the Planet blog in September and October 2014.)

Part 1, posted previously, is here: http://bit.ly/1CE7YFM

2: Building blocks from the Mississippian Sea

3: At the corner of Mudd Hall, the secret of blue quartz

4: Seeing red: the great oxygenation event

5: Orogenous zones: how rock flows

6: Watch your step: the alpha predator of the Ordovician

7: Alma Mater’s other secret: a way forward on climate

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