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Don Barrett (aka DBs travels)

Don Barrett (aka DBs travels) club

Posted: 16 Jun 2017

Taken: 10 Apr 2017

0 favorites     1 comment    189 visits

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Washington •
Columbia River •
OreApr2017 •

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189 visits

Port Kelley WA (#0374)

Port Kelley WA (#0374)
The Two Sisters basalt columns.
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Comments
 slgwv
slgwv club
And here it was in Dec '85:
www.ipernity.com/doc/289859/33009659/in/album/438843

We geologists will say it's an erosional feature, due to the Scabland floods, from a single thick basalt flow. The blocky, somewhat lighter part below is in the lower part of the flow, which cooled more slowly, while the more spindly buttes above are basalt that cooled from the surface and thus more quickly. The cooling fronts met in the middle of the flow, so that what looks like two flows is in fact a single flow with very different textures from the different cooling histories.
6 years ago.

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