Jump to content

Help with geological oddities


Recommended Posts

Lone Hunter

Hope I'm not boring everyone as I'm going through my pile,  my curiosity has no limits. Found all these at various North Texas creeks,  probably all concretions just wondering if there's a name to put with them.  One looks like my dogs poop, wondering if it's coprolite.  Appreciate any feedback!

IMG_20210307_004424143.jpg

IMG_20210307_003317846.jpg

IMG_20210307_003235582.jpg

IMG_20210307_001357267.jpg

IMG_20210306_233649174.jpg

IMG_20210306_233547887.jpg

IMG_20210306_233423889.jpg

IMG_20210306_234732785.jpg

IMG_20210307_204122965.jpg

IMG_20210307_205639369.jpg

IMG_20210307_205648959.jpg

IMG_20210307_210249418.jpg

Link to post
Share on other sites
Creek - Don

First four photos are ironstone concretion with high iron content (iron oxide) filling of cracks that developed in the original concretion. Ironstone concretions are common at certain levels in the Woodbine, and there are usually a lot of them scattered on the upper surface of eroding Woodbine-Grayson contact exposures.  I even have some in my collection. 

 

image.png.684e10bd68d05da984d9423b06e95382.png

 

  • Enjoyed 1
Link to post
Share on other sites
Lone Hunter

I have gathered several of those at lake Grapevine,  just never one with those lines in the 'bubbles', wasn't sure if there was a worm or something else involved.  Thanks for the help!

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...