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Some Pennsylvanian Fusulinids


Missourian

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On 7/30/2012 at 7:55 PM, Bullsnake said:

I need to go to school!

 

No school needed. Just follow the scarp across the map :) :

 

post-6808-0-07567300-1343696438_thumb.jpg

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I found these today:

post-6808-0-17350700-1343536832_thumb.jpg

Triticites sp.

Toronto Limestone

Leavenworth County, Kansas

I like the color of the piece.

This color attracts me, nice :D

"I like honest men of all colors."

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  • 2 weeks later...

I found these yesterday:

 

post-6808-0-69013400-1344623705.jpg.6df3fe74f0e3e007794849ce592e9c2c.thumb.jpg.1d4b53613a50596f4aee3007634edd3a.jpg

 

Triticites sp. (primarius?)

Stoner Limestone

Clay County, Missouri

 

I have never seen fusulinid this thick in Kansas City metro rocks. Normally, they are inconspicuous.

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Attractive specimen, Mr M... as are all that you have posted I'd say. I wonder though how much surface detail is visible on these under magnification.. maybe not enough for a confident ID but is it comparable to, say, Bullsnake's loose Leavenworth Co. samples, or are they more eroded than that?

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I didn't spot any details on the weathered surface of the rock, or in individuals on the freshly broken side. The fusulinids seem to be quite worn, as would be expected after a few decades in the elements. But then again, I just eyeballed them without a lens. I'll drag them under the scope to look for the details that are assuredly there. :)

 

Edit: Using a loupe, these show some beautifully intricate internal structure. I'm not sure if they have surface furrows like some others fusulinids.

I based the tentative ID on a publication ( http://www.kgs.ku.ed...s/83/07_up.html ) that reported abundant T. irregularis in the Stoner Limestone of northeast Kansas.

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Some microscopic views moved from another thread....

 

Triticites sp.

Beil Limestone

Osage County, Kansas

 

post-6808-0-25449400-1343600593.thumb.jpg.c77321fa81f7f114a9369e93cb374e09.jpg

 

post-6808-0-31675500-1359359736.thumb.jpg.0ec78ca64782b9eee07f825a473516e0.jpg

 

post-6808-0-40307100-1359359730.thumb.jpg.4909e6087a1e5283877b49b8b0194a39.jpg

 

From the unpolished side:

 

post-6808-0-50952500-1359359721.thumb.jpg.e3260a081cbafdb01e8d933f81548fec.jpg

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Triticites sp.

Ervine Creek Limestone

Holt County Missouri

 

post-6808-0-81527100-1343536557.thumb.jpg.dc22bad5f2e1c781d46ad9fbdfae7b12.jpg

 

post-6808-0-96856000-1356678073.thumb.jpg.16d9053a40bd1b3884e3f24bb86e37ed.jpg

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Triticites sp.

Plattsmouth Limestone

Leavenworth, Kansas

 

post-6808-0-60234500-1357464636.thumb.jpg.8dddf004736f0a99865d185c0e38738b.jpg

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Triticites sp.

Beil Limestone (Virgilian)

Osage County, Kansas

 

post-6808-0-13917000-1343203409.thumb.jpg.4307ceb7f7cb0707e7bbb1ad85205f63.jpg

 

post-6808-0-50032000-1356593710.thumb.jpg.32d55c95693ecda33f21053635f3799a.jpg

Context is critical.

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Triticites sp. (primarius?)

Stoner Limestone

Clay County, Missouri

 

post-6808-0-69013400-1344623705.thumb.jpg.28bb58c0dfc919343f53a6fc6a781fa4.jpg

 

post-6808-0-73227500-1357464631.thumb.jpg.368530167417e7e896972cdd313af6e5.jpg

  • I found this Informative 1

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