tag:blogger.com,1999:blog-5211670216140060946.post7744823799156237749..comments2024-03-17T18:37:36.377-07:00Comments on Geotripper: An Old Fashioned Friday Foto Mystery...Garry Hayeshttp://www.blogger.com/profile/00531226195147986457noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-5211670216140060946.post-83447018923762384852011-06-04T08:12:37.274-07:002011-06-04T08:12:37.274-07:00It looks like lichen-covered agglomerate. Is that ...It looks like lichen-covered agglomerate. Is that the Table Mtn Latite up above?Silver Foxhttps://www.blogger.com/profile/03131032620978696727noreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-50607014445757918312011-06-03T12:09:45.288-07:002011-06-03T12:09:45.288-07:00Yup, also made me think of the coast and the pillo...Yup, also made me think of the coast and the pillow lava on Cayucos beach: http://academic.cuesta.edu/physci/Geology/pillow_lava.htm<br /><br />I shall look forward to the unveiling of the true answer.Alaskanoreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-9659448833574017772011-06-03T11:27:47.806-07:002011-06-03T11:27:47.806-07:00Could they be tufa?Could they be tufa?Randy A.noreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-80696741436189872192011-06-03T09:48:11.607-07:002011-06-03T09:48:11.607-07:00As much as I agree that it resembles pillow basalt...As much as I agree that it resembles pillow basalt, I think that I'd heard once that it was actually weathered sandstone, from along the coast. I've seen such outcrops while driving north of Bodega Bay.Davenoreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-23773211340437037622011-06-03T09:34:48.447-07:002011-06-03T09:34:48.447-07:00My wild guess: a weathered reef? It would be nice ...My wild guess: a weathered reef? It would be nice to know if it would react to acid.Rockdawghttps://www.blogger.com/profile/17773192781210146517noreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-37094283291234640212011-06-03T08:51:36.406-07:002011-06-03T08:51:36.406-07:00I was thinking pillow basalt too, but then remembe...I was thinking pillow basalt too, but then remembered that you were in East California; not much there. Then, looking a bit more, it looks like the coast, say Pt. Reyes (cow trails on hills, redwoods in sheltered corner?). So, pillow basalt, Pt. Reyes.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-73895435739142245732011-06-03T08:15:45.840-07:002011-06-03T08:15:45.840-07:00Looks like lava to me too.Looks like lava to me too.Gaelynhttps://www.blogger.com/profile/05784162697113288888noreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-24372299713154113412011-06-03T01:08:38.633-07:002011-06-03T01:08:38.633-07:00From here they look suspiciously basaltic. If the...From here they look suspiciously basaltic. If they are, then I would guess they are pillow basalts, formed as hot lava spilled out onto the ocean floor, interacting with the seawater and the previously formed pillows to cause the unusual shapes. They would have been brought here along with the rest of the package of rocks scraped off onto the accretionary wedge that formed during subduction of the Juan de Fuca Plate. <br /><br />I admit, though, that I don't know where in California these photos were taken.Erika https://www.blogger.com/profile/12766636366043651969noreply@blogger.com