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Artifact or Geofact?
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Charlie Hatchett



Joined: 06 Apr 2006
Posts: 898
Location: Austin, Texas

PostPosted: Thu Jul 20, 2006 3:52 pm    Post subject: Artifact or Geofact? Reply with quote



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%206.jpg



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%207.jpg



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%208.jpg



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%209.jpg


Specimen I
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Last edited by Charlie Hatchett on Thu Jul 20, 2006 10:15 pm; edited 1 time in total
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Charlie Hatchett



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PostPosted: Thu Jul 20, 2006 6:58 pm    Post subject: Reply with quote



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2010.jpg



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2011.jpg



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2012.jpg

Specimen II
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Last edited by Charlie Hatchett on Thu Jul 20, 2006 10:16 pm; edited 1 time in total
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Charlie Hatchett



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PostPosted: Thu Jul 20, 2006 10:13 pm    Post subject: Reply with quote



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2022.jpg

"Core"- approx 8" x 5"

Specimen III




http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2023.jpg

Another "Core"- approx 12" x 9"

Specimen IV
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Charlie Hatchett



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PostPosted: Thu Jul 20, 2006 10:23 pm    Post subject: Reply with quote



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2013.jpg



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2014.jpg



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2015.jpg

Specimen V
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Charlie Hatchett



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PostPosted: Thu Jul 20, 2006 10:28 pm    Post subject: Reply with quote



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2016.jpg



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2017.jpg


Specimen VI
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Charlie Hatchett



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PostPosted: Thu Jul 20, 2006 10:34 pm    Post subject: Reply with quote



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2018.jpg



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2019.jpg



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2020.jpg

Specimen VII
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DavidCampbell
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PostPosted: Sat Jul 22, 2006 8:30 am    Post subject: Reply with quote

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.
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frank harrist



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PostPosted: Sat Jul 22, 2006 9:03 am    Post subject: Reply with quote

I agree with David on this. Geofacts. Probably busted up in the stream.
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Charlie Hatchett



Joined: 06 Apr 2006
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Location: Austin, Texas

PostPosted: Sun Jul 23, 2006 11:14 am    Post subject: Reply with quote

Close up shots of Specimen I:



http://cayman.globat.com/~bandstexas.com/afw222.jpg



http://cayman.globat.com/~bandstexas.com/afw223.jpg



http://cayman.globat.com/~bandstexas.com/afw224.jpg



http://cayman.globat.com/~bandstexas.com/afw225.jpg


Whole specimen:



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%206.jpg



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%207.jpg

Note: this is Gray Georgetown Chert heavily coated with calcium

carbonate.
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Last edited by Charlie Hatchett on Sun Jul 23, 2006 8:21 pm; edited 1 time in total
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Charlie Hatchett



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PostPosted: Sun Jul 23, 2006 8:20 pm    Post subject: Reply with quote

Specimen 4 Close-ups:



http://cayman.globat.com/~bandstexas.com/afw226.jpg



http://cayman.globat.com/~bandstexas.com/afw227.jpg


Whole Specimen:



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2023.jpg

Any takers yet? Confused
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Charlie Hatchett



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PostPosted: Sun Jul 23, 2006 8:29 pm    Post subject: Reply with quote

Quote:
They lack the progressive reduction and platforms of a true core, as well as any purposeful pattern of flaking.


Look at the specimens from an art perspective versus functional.

These are what I feel are casts for pouring smelted metal over.

Their heavily dominated by the bird motif, apparrently very important to

these people. Recall the two magnetic pourings...both bird motifs.

Note the specimens are heavily iron stained.



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2023.jpg



http://cayman.globat.com/~bandstexas.com/afw230.jpg
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Last edited by Charlie Hatchett on Sun Jul 23, 2006 9:27 pm; edited 3 times in total
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Charlie Hatchett



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PostPosted: Sun Jul 23, 2006 8:45 pm    Post subject: Reply with quote

Specimen 7 Close-ups:



http://cayman.globat.com/~bandstexas.com/afw228.jpg



http://cayman.globat.com/~bandstexas.com/afw229.jpg


Whole Specimen:



http://cayman.globat.com/~bandstexas.com/extreme%20paleo%20artifact%2018.jpg
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DavidCampbell
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PostPosted: Mon Jul 24, 2006 7:26 am    Post subject: Reply with 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.
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Charlie Hatchett



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PostPosted: Mon Jul 24, 2006 7:43 am    Post subject: Reply with quote

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.
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PostPosted: Mon Jul 24, 2006 9:41 am    Post subject: Reply with quote

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.
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