all rocks, hard and soft
Friday, May 9, 2014
Kola super deep bore hole - just under 12300m
https://www.facebook.com/photo.php?fbid=685196844874696&set=a.352867368107647.80532.352857924775258&type=1
Tuesday, May 6, 2014
Washington landslide forces land use discussions
https://www.facebook.com/GSA.1888/posts/10152418138907079
Geologic map overlays for google earth
https://www.facebook.com/GSA.1888/posts/10152418195532079:0
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