The 366 daily episodes in 2014 were chronological snapshots of earth history, beginning with the Precambrian in January and on to the Cenozoic in December. You can find them all in the index in the right sidebar. In 2015, the daily episodes for each month were assembled into monthly packages, and a few new episodes were posted. Now, the blog/podcast is on an occasional schedule with diverse topics, and the Facebook Page showcases photos on Mineral Monday and Fossil Friday. Thanks for your interest!

Thursday, January 16, 2014

January 14. Africa’s Architecture


By Richard I. Gibson

Much of the Transvaal or Cape Craton, in South Africa, is exposed at the earth’s surface. This is one reason that the oldest examples of earth rocks come from this area, and why South Africa is so rich in the kinds of dense elements that were concentrated in the early earth, like diamonds, platinum and palladium.

Map of some of Africa's cratons modified from U.S. Geological Survey. 

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