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Re: Saturday, January 21, 2006
Hey Doc, I can't call myself a "real geologist" anymore, but I did study geology for 5 years at Edinburgh Uni. I've loved your photos and geo-musings ever since first finding your blog 2 years ago. About the name for those uplifted blocks...structures can get pretty complicated around transverse fault zones, and the exact terminology will depend on the fault geometry of the locality in question. One term for uplifted blocks on the "restraining bend" of a strike-slip fault (where the ground is getting pushed together) is simply "pop-ups". Often you get additional faulting arising from the compression, and "flower structures" develop. You may also have been thinking of "horsts" which are the (relatively) uplifted blocks resulting from normal faulting (like in rift valleys). I'm sure someone familiar with the area in question can give you better info than me. I love the idea of stitching images of the world together. There is so much potential for geoscience education using tools like Google Earth, geotagged flickr photos etc. I'm currently building a site about using Google Earth for geology, pulling together different people's work. Your photos could make some great overlays. And the book idea you mentioned the other day is a great one - I'll buy it!
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