Three new images of plumose structure
Took all these images of joint surfaces this summer in Glacier National Park on my Rockies trip. Enjoy!
Appekunny Formation, with two concentric ribs:
Grinnell Formation, showing well-developed hackle fringe (rough area at bottom):
In the lovely fine-grained limestones of the Helena Formation:
Appekunny Formation, with two concentric ribs:
Grinnell Formation, showing well-developed hackle fringe (rough area at bottom):
In the lovely fine-grained limestones of the Helena Formation:
Labels: montana, national parks, proterozoic, structure, weathering
1 Comments:
Check out the size of the plumose structure I GigaPanned at Mount Rainier National Park this summer: http://www.gigapan.org/gigapans/31973/.
Edi and Berti (each about 10cm tall) are in the GigaPan near the bottom for scale.
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