Jump to content

Jackson g

Recommended Posts

The sun is exposed, snows melting, and many a birds chirping means it's nice enough to go scope out some Missouri Mississippian limestone! With the randomness of the weather this state gets, this is the first chance this year I've had to return to one of my favorite spots. This is one of many Burlington Formation exposures in Missouri. There are spots where the limestone consists of almost entirely crinoidal bits and pieces! Being the picky man I am, I mainly collect and prepare calyxs and brachs. 

 

Crinoids are king here, and will be by far the most common critter. They dominated the early shallow sea Missouri once was covered by. Its cool to see how many crinoidal bits some rock has just weathering away.

20200304_114048.jpg

 

 

20200304_114559.jpg

 

There is about a good 12-16 feet (guesstimate) of the limestone currently exposed, much of remains underwater still. Eventually as time takes it toll, more pieces will weather, crumble, and eventually roll down hill. This area is constantly going above and under water. There is really no reliable time to hunt this spot, unless you know when water levels are low in the area.

20200304_114813.jpg

 

Rarely, one may find a nice crinoid calyx among the countless stems and other crinoid pieces. Usually they are pretty weathered like this one if they don't require any prep. Many of the calyxs found are just pieces, distorted, or crushed. It usually takes my eyes a hour or so before I can recognize calyxs quickly. 

20200304_114740.jpg

I thought this chunk was cool. Its a heavily weathered calyx, with a small chunk of the stem at the base.

20200304_120024.jpg

I was shirtless today with it being the nice 60 degree weather. Seems Mr. Snake was enjoying it as well. ;)

20200304_120829.jpg

 

That's all of the photos I got to take out at the lake. Finds coming soon when I'm home to take better pictures. 

 

I've only got a 30 minute drive from home, so here are the finds! I'll ID most of what I found later when I'm home with literature. I found a nice assortment of crinoidal calyxs, cups, plates, stems, and a few spines. Everything in the upper portion of the photo needs cleaned with some scribe/ abbrasive work. The rest should look good after I clean them with a pick, toothbrush, and warm soapy water. I also managed to pick up a nice rugose coral, a blastoid, a bryozoan, and a few brachiopods as well. March 3, 2020.

 

 

20200304_124223.jpg

 

My favorite find of the day

20200304_124504.jpg

 

And for those of you who like minerals, I found some nice calcite crystal as well.

20200304_130749.jpg

20200304_130646.jpg

My favorite the honey color calcite

2020-03-04 13.16.25.jpg

 

Thanks for reading. :)

  • I found this Informative 11
Link to comment
Share on other sites

5 minutes ago, Al Dente said:

Nerodia sp., possibly a Northern Watersnake.

Yes indeed. May not be venomous, but I keep my distance!

Link to comment
Share on other sites

Very nice haul!

Opalised fossils are the best: a wonderful mix between paleontology and mineralogy!

 

Q. Where do dinosaurs study?

A. At Khaan Academy!...

 

My ResearchGate profile

Link to comment
Share on other sites

What a great collection from this site.  Love the calcite too.  :default_faint:

Link to comment
Share on other sites

Nice crinoid calyces - I'd love to find one of those in my area!  :envy:  Congrats!  :dinothumb:

Link to comment
Share on other sites

Great finds! No real Mississippian exposures here in the NE so I'm jealous of your esposures.

-Dave

__________________________________________________

Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPhee

If I'm going to drive safely, I can't do geology. - John McPhee

Check out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/

Link to comment
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
×
×
  • Create New...