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Charlie Hatchett
Joined: 06 Apr 2006 Posts: 898 Location: Austin, Texas
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Charlie Hatchett
Joined: 06 Apr 2006 Posts: 898 Location: Austin, Texas
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Charlie Hatchett
Joined: 06 Apr 2006 Posts: 898 Location: Austin, Texas
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Charlie Hatchett
Joined: 06 Apr 2006 Posts: 898 Location: Austin, Texas
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Charlie Hatchett
Joined: 06 Apr 2006 Posts: 898 Location: Austin, Texas
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Charlie Hatchett
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DavidCampbell Site Admin
Joined: 01 Jun 2003 Posts: 436 Location: Occupied Republic of Texas
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Posted: Sat Jul 22, 2006 8:30 am Post subject: |
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I think these are geofacts, Charlie. They lack the progressive reduction and platforms of a true core, as well as any purposeful pattern of flaking. Some pebbles have been found up here in North Texas with one or two fractures which were apparently "Tests". I have found these usually small pebbles with one or two ends broken off as if to form a striking platform but apparently they were too small for even the Fourche Maline to use and they were past masters of efficient knapping. Several senior archaeologists have commented on how common these naturally flaked nodules are in Central Texas streams and I think they are probably correct in many cases. One or two flakes knocked from a flint nodule could possibly have been for the making of expedient onsite butchering tools but you would have to have more to corroborate that than a nodule with a couple of flakes knocked off haphazardly. _________________ David Campbell
"The going's getting weird, so I'm turning pro." |
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frank harrist
Joined: 16 Mar 2006 Posts: 107 Location: Northeast Texas
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Posted: Sat Jul 22, 2006 9:03 am Post subject: |
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I agree with David on this. Geofacts. Probably busted up in the stream. _________________ We have not inherited the earth from our fathers. We are borrowing it from our children. (Amish Farmer) |
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Charlie Hatchett
Joined: 06 Apr 2006 Posts: 898 Location: Austin, Texas
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Charlie Hatchett
Joined: 06 Apr 2006 Posts: 898 Location: Austin, Texas
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Charlie Hatchett
Joined: 06 Apr 2006 Posts: 898 Location: Austin, Texas
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Charlie Hatchett
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DavidCampbell Site Admin
Joined: 01 Jun 2003 Posts: 436 Location: Occupied Republic of Texas
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Posted: Mon Jul 24, 2006 7:26 am Post subject: |
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I still don't see these as artifacts even as molds for casting. Try pouring some molten lead over one or even some plaster of paris(you will need to put some foil or something that won't allow the plaster to bond with the stone, like saran wrap maybe). The positive will tell you more than trying to visualize the negative space image. _________________ David Campbell
"The going's getting weird, so I'm turning pro." |
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Charlie Hatchett
Joined: 06 Apr 2006 Posts: 898 Location: Austin, Texas
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Posted: Mon Jul 24, 2006 7:43 am Post subject: |
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Quote: | I still don't see these as artifacts even as molds for casting. Try pouring some molten lead over one or even some plaster of paris(you will need to put some foil or something that won't allow the plaster to bond with the stone, like saran wrap maybe). The positive will tell you more than trying to visualize the negative space image. |
What do you think may have caused the negative bulbs of percussion
apparent in the close-ups? Or maybe their not obvious in the photos. _________________ Charlie Hatchett
www.preclovis.com
http://forum.preclovis.com/
"Pregunte la Autoridad" |
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DavidCampbell Site Admin
Joined: 01 Jun 2003 Posts: 436 Location: Occupied Republic of Texas
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Posted: Mon Jul 24, 2006 9:41 am Post subject: |
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I think those bulbs of percussion are caused by tumbling down the stream with lots of other gravel and boulders. This kind of fracture appeared in experiments with cement mixers too. Also these examples of yours seem to have a number of natural flaws like fractures or impurities which would make random spalling and flaking more likely to occur. Even a good core nodule will sometimes have these in them which makes them unsuitable for further reductionsl. Kind of like a flaw in a diamond which is only revealed when it is struck or cut and shatters along the flaw. The red one with white cementation is particularly full of these. _________________ David Campbell
"The going's getting weird, so I'm turning pro." |
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