The Heat from Within: Earthly insights into planetary volcanism

The Heat from Within Teacher Training Workshop

GALAPAGOS VOLCANOS - 2

To "Galapagos Volcanos - 1"

On the workshop, we could only see volcanos in a portion of Oregon, which is unusual in having so many different kinds of volcanos together, and in being at the boundaries of so many geological/tectonic areas. So, the skeptic might ask "Are these volcanos representative of the Earth and other planets, or just weird and peculiar to this spot?" Fortunately, most of the features we saw are representative, and here is evidence!

Ocean islands, like the Galapagos, represent a geologic environment far different from any we saw in Oregon, but which still have basalt volcanos. My sister, Evelyn Treiman, visited the Galapagos Islands earlier this year with a tour from the New Mexico Museum of Natural History. She took lots of photos of wildlife and geology, and agreed to share these with our Workshop. Credit.



Red Cone
not a'a

Pahoehoe. Basalt lava on the Galapagos Islands flows just the same as basalt lave in Oregon, and presumably on Mars or the Moon. Here are some typical pahoehoe lobes, like the one example we saw on Rich's flow. Darwin Bay, Genovesa Island. Credit.

Lava Tube. Here are some small, broken lava tubes, very similar to the ones we saw at Rich's flow on Santiam pass. Bartolome Island. Credit.
Red Cone
not a'a

Lava Tube Cave. Even in the Galapagos, lava flows produce long large lava tubes as they flow. Here, a skylight formed when a part of the roof collapsed. Santa Cruz Island. Credit.

Lava Tube Walls. Just as we saw in Oregon, the walls of the Galapagos lava tube have benches (hanging over Bryan), and have horizontal lines marking the levels of the flowing lava. Credit.

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Updated 07/28/06.
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