Jump to content

AAI Cragging Category 2013 Photo Submission Thread


jon
 Share

Recommended Posts

  • Replies 59
  • Created
  • Last Reply

Top Posters In This Topic

522882_434092959942584_767217874_n.jpg

 

"Into The Mystic" first ascent by Plaidman aka Scott Peterson

photo credit Rick McDonald.

 

Ascent of a Spiracle found in The Columbia River Gorge.

 

Spiracle (also pipe vesicles and vesicle cylinders) rise from the bottoms ... where the relations of individual flows to vents are generally obvious from their .... Columnar joints are typical of tube fillings even though the rock surround- .... the spiracle but is continually pushed back by the rising column of steam.

 

http://earth.geology.yale.edu/~ajs/1960/ajs_258A_11.pdf/350.pdf

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share




×
×
  • Create New...