Quartzite Outcrop in Brazil

May 29, 2007


Provided and copyright by: Rodrigo Penna, GEORADAR
Summary authors & editors: Rodrigo Penna

The photo above showing an impressive outcrop with cross-banded stratification was taken near Diamantina, in eastern Brazil, in April of 2006. This rock is a depositional rift quartzite and is found at the bottom of the Espinha├žo Sedimentary Sequence. The Espinha├žo Range was formed intermittently in segments from the Paleozoic onwards. Higher summits are remnants of older surfaces that have been gradually worn down -- oldest surfaces date from the Early Cretaceous.

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