31 March 2011

Mount Washington 4: folded granite dikes

Posted by Callan Bentley

We now return to Mount Washington, New Hampshire, where our intrepid heroes summit the mountain in a mere three hours (from Pinkham Notch via the Lion Head):

To refresh your memory of the story so far, we had seen metamorphosed turbidites, like this one (new image):

…and checked out some gorgeous metamorphic porphyroblasts of “pseudoandalusite,” like these (new image):

… and some lovely folds in the metamorphic foliation.

Now we descended into Tuckerman Ravine where we espied some more lovely folds, this time deforming a series of petite granite dikelets:

Intense! Intestine-like! Parasitic! Ptygmatic! …Groovy!