Thank you, very interesting. Did not know there was a string of volcanoes there. In the Pacific Northwest there's OWL--Olympic Wallowa Lineament. Various studies, but possibly less explanation than Jemez. There is even the view that it's nonexistent. However, Walla Walla County Emergency Management and DOE (Hanford) take it seriously enough because of earthquake possibility, based on records of a very strong earthquake in 1872 just east of the Cascades near Wenatchee.
I've done some work on the Olympic-Wallowa Lineament as part of regional tectonic analyses, mostly back in the '80s and early '90s. There are certainly intriguing geophysical and geologic alignments, with diverse expression over long geologic times, but it is challenging to say whether or not it is some coherent entity or just coincidence. Maybe a future post!
My favorite subject . . . Colorado. I clipped your map image to insert it to the appropriate chapter in Lon Abbott's Geology Underfoot along Colorado's Front Range. I had been under the impression the the lineament ran on a diagonal more centered from corner to corner of the state. I guess that we came in on the same island arc as Arizona. Thanks
Thanks! It's certainly a complex zone, and there might be some kinds of features that do indeed have a more corner-to-corner aspect. I appreciate your support!
Thank you, very interesting. Did not know there was a string of volcanoes there. In the Pacific Northwest there's OWL--Olympic Wallowa Lineament. Various studies, but possibly less explanation than Jemez. There is even the view that it's nonexistent. However, Walla Walla County Emergency Management and DOE (Hanford) take it seriously enough because of earthquake possibility, based on records of a very strong earthquake in 1872 just east of the Cascades near Wenatchee.
I've done some work on the Olympic-Wallowa Lineament as part of regional tectonic analyses, mostly back in the '80s and early '90s. There are certainly intriguing geophysical and geologic alignments, with diverse expression over long geologic times, but it is challenging to say whether or not it is some coherent entity or just coincidence. Maybe a future post!
Thank you.
Exceptionally well done, Richard!
Thanks!
My favorite subject . . . Colorado. I clipped your map image to insert it to the appropriate chapter in Lon Abbott's Geology Underfoot along Colorado's Front Range. I had been under the impression the the lineament ran on a diagonal more centered from corner to corner of the state. I guess that we came in on the same island arc as Arizona. Thanks
Thanks! It's certainly a complex zone, and there might be some kinds of features that do indeed have a more corner-to-corner aspect. I appreciate your support!