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Dikes- WC583
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Dikes- WC583

by Jim Lockhart

Gallery: Weekly ChallengePosted May 7, 2013168 views3 comments
Well, I do love rocks, in all sizes, shapes, and colors. This interesting feature was taken on an island off the coast of Stonington, ME. Had to consult a geologist at UCONN for an explanation. He told me it was a dike. Hundreds of thousands of years ago, the granite consolidated, cooled, then cracked. Residual fluids from below migrated up to fill the crack. This particular vein came out of the water and continued on a more or less straight line for another 100 feet. Taken with my Canon SX30, ISO 80, f/4, 1/640, focal length of 30mm, AWB, natural light. Comments and suggestions always welcome.

Comments

3 comments
Comment posted by Mark Seaver on May 8, 2013 at 10:53 AM
That looks like some fine grained granite, which means it was close to the surface (cooled fast). I like all the color in the vein and how you've angled it across the frame. For me, from a photographic point of view, I'd like to see more of the weathering seen in the upper left or a tighter look at the vein. As presented, this does a good job of illustrating some interesting geology.
Registered on January 23, 2011, 1103 Posts, 17270 Comments
Comment posted by Jim Lockhart on May 8, 2013 at 2:51 PM
Thank you Mark for adding some info as to how this was formed. I actually tried a crop to lose the clutter in the upper left, but that meant giving up the diagonal boundary on the granite too, and wasn't sure I wanted to do that.
Registered on February 19, 2013, 91 Posts, 500 Comments
Comment posted by Carolyn Derstine on May 8, 2013 at 9:18 PM
Nice comp in this, Jim. I like the diagonal line across the image contrasting with some vertical cracks in the rock. The rocks in the top left add interest with their variety of sizes and help give an environmental context. It would be nice to see a closer view of this interesting vein in the rock but this is also a great scene as is. I find it fascinating to view various geologic formations and learn how they were made so thanks for your additional info. :smile:
Registered on February 16, 2011, 610 Posts, 3684 Comments