Hornstone Nodule 1 - Spalling Part 1 of 2
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- Опубліковано 28 кві 2020
- Edit - changed boulder to nodule in title, more
appropriate.
This isn't going to be the best example of spalling down a raw boulder of stone, far from it, but hey at least I got some practice on camera taking really large flakes. This is the last video I took in the old place, since moving to a new place I haven't had any time to knap. That will change soon. First thing to do is fix up this core and remove hopefully 5 more good flakes. Coming soon. - Наука та технологія
Excellent....thanks for doing these for
Cheers, thanks for watching and commenting.
That hornstone is really cool looking inside!
It’s some amazing stuff, thanks for giving me the opportunity to work it.
That looks like Meade County hornstone . I used to live in Brandenburg Ky on the Ohio and collected it for knapping . I've got some Indiana hornstone now but it doesn't have any platforms at all on it . Perfectly sealed in its cortex . Any thoughts on bipolar percussion to open them up ? Have you ever tried that ? I've only bipolared small river gravels, never a 10lb nodule .Good content man,you got a sub from me .
Meade County eh? Cool. This was the first hornstone I ever worked, pretty good stuff. Very similar to the little bit of Cobden I've worked, but a little grainier and different colours. I've done some bipolar percussion on big pieces before, but they at least had some flat-ish surfaces to crack into. I imagine you could do the same thing you do with smaller river gravels, but ramp up the anvil and hammerstone size? Just make sure its really well stabilized, maybe bury your anvil in the dirt a ways and pack some dirt around the nodule too. And make sure your toes and fingers are out of the danger zone!
By counting the rings from inside out, looks like the rock's around 1500 yrs old. Great job.
Thanks
@DeeDee Edwin Burks you can't be serious. Rocks can't be dated by rings like a tree can! Give me a break! First of all, I'm not even certain this is hornstone. It looks more like Brush Creek chert to me and the "rings" are what we call "banded" in geology. If this nodule is Brush Creek Chert, (and it wouldn't be that far off from the age of hornstone, either) then it is from The Kasimovian Period, which is a geochronologic age or chronostratigraphic stage in the ICS geologic timescale. It is the third stage in the Pennsylvanian (late Carboniferous), lasting from 307 to 303.7 Ma. The Kasimovian Stage follows the Moscovian and is followed by the Gzhelian.
The Kasimovian saw an extinction event which occurred around 305 mya (305 MILLION YEARS AGO), referred to as the Carboniferous Rainforest Collapse.
THAT'S RIGHT... THE ROCK IS BETWEEN 250 AND 450 MILLION YEARS OLD. Those rings didn't tell you that, though, did they!?
@@lulabell79_31 He made a joke and you took it this far, jeez
@@piggyslayer1999 I don't think he was joking.
Dude, too much caffeine
#truth