History of the Earth

We've concentrated the history of Planet Earth into one year. Follow the geology podcasts chronologically from the origin of the Earth to the origin of Mankind.

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Thursday, May 30, 2019

Cone-in-Cone

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The mineral here is just calcite (even though it’s mostly almost black), but it shows interesting features. Cone-in-cone structures a...

Monday, May 27, 2019

The Llanite Dike

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Mineral Monday + Tectonic Tuesday. Blue quartz is uncommon and is usually colored by inclusions of unusual minerals like crocidolite, tou...

Tuesday, May 21, 2019

History of Geology: Recognizing overthrusts

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Middle section of the 38-inch cross-section Cover This Tectonic Tuesday is also an example of the History of Geology. “The thru...

Sunday, May 19, 2019

Epitaxy

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Epitaxy, from Greek words meaning “upon” or “above” and “ordered arrangement,” in minerals means crystals of one (or the same) minera...

Friday, May 17, 2019

An extension of the Mid-Continent Rift?

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In the far northwest corner of the flat, flat Texas panhandle, extending into New Mexico, there’s a narrow, elongate magnetic low. The i...

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About Me

Richard Gibson: I'm a geologist, historian and tour guide in Butte, Montana. Author of three books:1) What Things Are Made Of; 2) History of the Earth—A Perpetual Calendar; and 3) Lost Butte, Montana.

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