Conglomerate

[arrowheadman]

Anything made out of the conglomerate material sub-commonly found in the central and North central Fl area. I would actually like raw material the most for knapping. Does anyone know where that stuff is quarried or has anyone found a raw material outcropping of the stuff? I am very interested to know, b/c non of the folks I typicaly hang with know where it comes from.

[Newt]

Me either.
I do have a really cool tool made out of that material.
I only have 1 or 2 pieces in my collection.
Rare stuff when found. IMO.

Newt

[PowerG]

We find fairly small pieces of raw material in the creeks sometimes, but I have no idea of where it comes from. I don't think I've ever seen a piece big enough to make anything out of, but obviously it occurs that way somewhere, as I've seen a couple of fairly large discoidals made from it that were found somewhat locally. Interesting discussion.

[Martingeetars]

I know of a site just west of macintosh fl and thats the only material you find, makes alot of sense , I've found quite a few pieces around orange lake made out of the stuff. Not sure who owns the property now.

[MRMELON]

Claude Vanorder knows where to find just about any kind of rock avalable if someone knows how to get a hold of him. He moved up around Ocala!

[tomclark]

I've looked around Tampa Bay for many years and have only found a few conglomerate points and only a few small pieces of material. Most of the conglomerate I've found has been in South Pinellas, but never found a source.

[arrowheadman]

Its intersting that none of us really know where the stuff is from. Of the places I've hunted the only place that flakes were found with consistancy was O-lake. Based on this and what Martingeetars said, I'm inclined to think that the stuff must have occured round that lake or somwhere in the imediate area??... Ive found many a conglomerate flake around O-lake but only 2 whole points (both citrus preforms) and about 20 broke herny and citrus preforms. Others I've spoken to have similar reports with the majority of the conglomerate they find being of a later decent. Interesting.... Has anyone else noticed this?

[arrowheadman]

DD did find a conglomerate hernando made of the stuff with me also

[tomclark]

What is Conglomerate?

Conglomerate is a clastic sedimentary rock that contains large (greater than two millimeters in diameter) rounded clasts. The space between the clasts is generally filled with smaller particles and/or a chemical cement that binds the rock together.


What is the Composition of Conglomerate?

Conglomerate can have a variety of compositions. As a clastic sedimentary rock it can contain clasts of any rock material or weathering product that is washed downstream or down current. The rounded clasts of conglomerate can be mineral particles such as quartz or they can be sedimentary, metamorphic or igneous rock fragments. The matrix that binds the large clasts together can be a mixture of sand, mud and chemical cement.


How Does Conglomerate Form?

"Conglomerate forms where a sediment of rounded clasts at least two millimeters in diameter accumulates. It takes a strong water current to transport particles this large. So the environment of deposition might be along a swiftly flowing stream or a beach with strong waves. There must also be a source of large-size sediment particles somewhere up current. The rounded shape of the clasts reveal that they were tumbled by running water or moving waves.

Conglomerates often begins by being deposited as a sediment consisting mainly of small clasts as shown in the photo below. The finer size sand and clay which fill the spaces between the larger clasts is often deposited later on top of the large clasts and then sifts down between them to fill the interstitial spaces."

Ancient rivers and beaches, sedimentary. The stuff is probably all over the place, just spread out in particular spots.

[woodlandworld]

Anybody got a pic of the material or even a broke made from it ? I always viewed the term Conglomerate as a broad discription of two -three materials melded together . I gotta believe in almost 30 yrs diggin Fl Ive come across it.

[tomclark]

A Woodland point from Pinellas Co. Probably a Duval.
20404

[redfishtony]

Thanks Tom for the education, I was just fixin to google it. After seeing the picture I have seen small amounts of this material around the limerock mines. It rarely shows up in the broken cap rocks they remove while pushing the overburden materials off the surface of the rock. I have never seen any large quantities of it anywhere. Good luck finding some. Interesting material for sure. TW

[woodlandworld]

OK, now I see what yall are talking about. Ive seen one or two over the years from central Fl, dont look very disirable to Knap does it,

[ancienttrails]

Lots of types of rocks in central fla.a red one .

[arrowheadman]

Heres a few flakes and a base. I found the tip and lost it! So sad.

[Gutz54]

Found by Leo Voltze ,Hillsborough C.,Fla 1970's

[Gutz54]

Blade

[Gutz54]

The oldtimers sometimes called this material "calamity stone"

[tomclark]

OMG, Gutz!:eek::eek::eek:

Tony: "It rarely shows up in the broken cap rocks they remove while pushing the overburden materials off the surface of the rock."

From pieces of just material that I've found this seems to be the case...;)

[tomclark]

Still trying to figure if this is conglomerate or just baybottom. I like that term "Baybottom Conglomerate", also Woodland, Hernando Co, FL:)

20428

20429

[arrowheadman]

Holy S&*# Gutz those are amazing!
I also like that term Baybottom Conglomerate. Here are 2 conglomerate preforms

[arrowheadman]

its kinda hard to tell but the orange herny is conglomerate w/ green windows and the unfinished one-notched herny is a cream and green colored conglomerate.

[arrowheadman]

this pic is almost not worth posting but its a blue/purple conglomerate

[arrowheadman]

A little better pic

[arrowheadman]

i think this is conglomo

[arrowheadman]

Ive always really liked this one, its not mine. I photographed it at the Alachua show. Its not conglomerate but has the look of it.

[arrowheadman]

Guess I have more of it than I realized. Snap base herny

[arrowheadman]

Better pic

[arrowheadman]

:)

[Gutz54]

Nice!!!!

[woodlandworld]

A.man
Nice, judging by your pic's Conglomo knaps better than I thought. thanks for showin..

Yeh, I vote for BayBottm Conglomerate TC