Tuesday, October 7, 2014

Geo 730: October 7, Day 645: CRB Rears Its Head?

In contrast to much of the sedimentary rock along this portion of the coast, I left Boiler Bay thinking I'd seen no evidence of Miocene Columbia Basalt Flows into the area. But looking at some of these photos, such as the one above, I was probably mistaken. It looks like many of the rocks to the ENE across the bay are black CRB's, not beige Astoria Formation. In fact, looking carefully, I thinking I'm seeing a clastic dike cutting into one of the flows:
I don't know if this area is accessible, and this was on the higher end of the tide, but it might be interesting to try to get at this area.

Photo unmodified. July 15, 2014. FlashEarth Location.

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