tag:blogger.com,1999:blog-5211670216140060946.post7620901881140940104..comments2024-03-17T18:37:36.377-07:00Comments on Geotripper: Driving Through the Most Dangerous Plate Boundary in the World: At the Portal of Hell in the Diablo RangeGarry Hayeshttp://www.blogger.com/profile/00531226195147986457noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-5211670216140060946.post-32302322291081436672015-05-14T10:12:40.597-07:002015-05-14T10:12:40.597-07:00It's a vein or dike of quartz and calcite that...It's a vein or dike of quartz and calcite that I guess is hydrothermal in origin, probably in relation to faulting.Garry Hayeshttps://www.blogger.com/profile/00531226195147986457noreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-58294268197895150202015-05-11T17:46:53.757-07:002015-05-11T17:46:53.757-07:00More (though not much more) on the railroad line i...More (though not much more) on the railroad line is at: http://www.abandonedrails.com/Patterson_and_Western_Railroad<br /><br />What's that light-colored dike-like formation that shows up in Google at about 37.4378551,-121.3212959? Interesting, and it's only on the south side of the creek not the north.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-23119475461605900222015-05-09T09:52:22.618-07:002015-05-09T09:52:22.618-07:00Amazing views of geological features! I am a petro...Amazing views of geological features! I am a petroleum engineering student and we were studying about geology in general and we've studied about plate boundaries but I haven seen one before, though we have one here in kurdistan region between Iran and Iraq.<br />I really appreciate the sharing of such things! thank you,Petroleum Engineerhttps://www.blogger.com/profile/04088970745679574358noreply@blogger.com