geology

Graywacke Imprints

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Recently I noticed some interesting imprints in the graywacke at John Brown’s Beach. As best I can tell, something that was formerly there is no longer there, and that something was different than the rest of the rock. Perhaps it was some sort of softer stone embedded in the harder graywacke that eroded easily? I … Read more

Documenting Striations

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I recently set up some pages and forms to document glacial striations around Sitka. It’s a project suggested by Jim Baichtal, a geologist for the forest service, while he was in town recently. The main intent is to document striations on islands in and around Sitka Sound to get a better sense the direction of … Read more

Katlian Outcrops

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Rock Outcrop in Katlian Bay Last summer while hiking on Starrigavan Ridge, I noticed some interesting looking rock outcrops along the shoreline of Katlian Bay. They appeared to be more red in color, and after my experiences at Red Bluff Bay, I wondered if maybe it was an outcrop of similar rock. It was only … Read more