Definition of geologic fold from Wikipedia:
"The term fold is used in geology when one or a stack of originally flat and planar surfaces, such as sedimentary strata, are bent or curved as a result of plastic (i.e. permanent) deformation. Synsedimentary folds are those due to slumping of sedimentary material before it is lithified. Folds in rocks vary in size from microscopic crinkles to mountain-sized folds. They occur singly as isolated folds and in extensive fold trains of different sizes, on a variety of scales. Folds form under varied conditions of stress, hydrostatic pressure, pore pressure, and temperature - hydrothermal gradient, as evidenced by their presence in soft sediments, the full spectrum of metamorphic rocks, and even as primary flow structures in some igneous rocks. A set of folds distributed on a regional scale constitutes a fold belt, a common feature of orogenic zones."
13 comments:
Wow, that looks really cool...I never heard of a geological fold before so thanks for all the info :)
Thats a neat formation.
The rock face looks like a sculpture. The perfect backdrop for a photo.
Oof. I read the explanation but my brain didn't register anything! Looks cool though! And I imagine that's what happens during some earthquakes too.
Hiya kids!
Fascinating and a perfect photo the way the railing leads the eye to the point of interest. Where are some really great hexagonal columns at Mammoth (Devils Postpile) the mountains we go to for vacation.
Fantastic (de)formation!
My husband would never go up there. He says it doesn't matter that it has been there a million years, it could slide at the moment he is below it.
Hope, I noticed you've added me to your list of blogs that you follow (thank you!) and I can't for the life of me (maybe cuz I have the flu) figure out how to start a blogs I follow list. Can you please help me with this? I would really appreciate it. Thanks!
Hi PJ....Here is one way to start a Blog You Follow List...
I found this under Blogger Help.
Here is the link:
http://help.blogger.com/bin/answer.py?answer=104226
Hello PJ (again)....I also created my very own personal Blogs I Follow List which I have displayed at the bottom of my blog.
Here is how I created this one...
1) From your blog home page, click on "Customize" in the upper right corner of your blog.
2) Your "Layout" page should appear.
3) Under the Page Elements tab, you will see the layout of your blog. Click on the "Add a Gadget" Link.
4) When you click on Add a Gadget you will be given some "gadget" choices.
5) Click on "Add a Blog List."
6) This will open up a Blog List customization page where you can add in addresses of sites you like to follow. You can customize with thumbnails and icons if you wish.
I really like this feature because I can visit blogs from my very own homepage!
I hope this helps, PJ!
~Hope in Knoxville
Another very cute photo of your family and I learned something too. Great post!
Nice place for a picnic!
wonderful detail. Hope the waterfall doesn't hit!
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