AA Lava at Sullivan Bay on Santiago Island in Galápagos, EC - Encircle Photos

AA Lava at Sullivan Bay on Santiago Island in Galápagos, EC

You will also examine a’a (or aa) lava at Sullivan Bay. This Hawaiian term describes when lava rapidly flows down a steep slope. It leaves behind rugged surfaces with a spectrum of reds, oranges and browns caused by the oxidation of the material’s iron. In a few places, the molten crust heaved up and snapped into pieces during tremors. This allows you to examine the successive lava flows like rings in a tree. The field’s average depth is about five feet.

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Sullivan Bay, Santiago Island, Ecuador

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