<HTML>Ah, so your basic contention is that the double helix grooves noted by Chris Dunn (I noted his addresses above) were actually just the gravity causing the errant sand to drop further into the drilling area as the drill was turned around and around. So, with every revolution, this might have only moved the piece of errant grit 1/100th of the way around the core sample, and therefore the ACTUAL drilling rate may be as much as 100 TIMES what we have been hypothesizing?
Sounds plausible to me.
Now, about the lathe...
Absence of evidence is not evidence of absence!
(JUST KIDDING!!!!!)
Do you suppose they had a hardmounted fixed drill bit that they used to grind stone surfaces? Maybe a piece of spinning quartz, which they would move the stones OVER and shape them into wonderful vases and the like?
Anthony
ps.
Thanks for giving me the answers I requested, Frank. I seriously couldn't find other references to OTHER cores anywhere. You have saved me much legwork.
A</HTML>
Subject |
Author |
Posted |
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John Wall |
September 25, 2001 03:54PM |
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Sandy J. Perkins |
September 25, 2001 05:49PM |
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R. Avry Wilson |
September 26, 2001 12:23AM |
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Brad |
September 26, 2001 01:47AM |
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Katherine Reece |
September 26, 2001 10:43AM |
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John Wall |
September 26, 2001 10:46AM |
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Sandy J. Perkins |
September 26, 2001 02:33PM |
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Anthony |
September 26, 2001 04:40PM |
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Don Holeman |
September 26, 2001 12:10PM |
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Sandy J. Perkins |
September 26, 2001 02:13PM |
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Anthony |
September 26, 2001 04:43PM |
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Sandy J. Perkins |
September 27, 2001 08:28PM |
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Archae Solenhofen |
September 27, 2001 10:01PM |
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Sandy J. Perkins |
October 03, 2001 12:02AM |
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Sandy J. Perkins |
September 26, 2001 02:00PM |
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Don Holeman |
September 26, 2001 02:26PM |
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Anthony |
September 26, 2001 04:48PM |
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John Wall |
September 26, 2001 05:04PM |
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Anthony |
September 26, 2001 06:14PM |
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sandy J. Perkins |
September 27, 2001 08:32PM |
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Anthony |
September 28, 2001 06:36AM |
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Sandy J. Perkins |
September 28, 2001 08:42PM |
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Anthony |
September 26, 2001 04:46PM |
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Archae Solenhofen |
September 26, 2001 06:14PM |
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Sandy J. Perkins |
September 27, 2001 08:38PM |
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Archae Solenhofen |
September 27, 2001 09:43PM |
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Frank Doernenburg |
September 28, 2001 04:57AM |
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Anthony |
September 28, 2001 06:45AM |
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Claire |
September 28, 2001 05:17PM |
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John Wall |
September 28, 2001 05:28PM |
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Claire |
September 29, 2001 05:10AM |
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Sandy J. Perkins |
September 28, 2001 08:44PM |
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Anthony |
September 28, 2001 08:49PM |
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Sandy J. Perkins |
September 28, 2001 08:40PM |
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Sandy J. Perkins |
September 28, 2001 08:30PM |
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Archae Solenhofen |
September 29, 2001 12:28AM |
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Archae Solenhofen |
September 29, 2001 02:16AM |
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Sandy J. Perkins |
September 29, 2001 07:55PM |
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Don Holeman |
September 29, 2001 09:11PM |
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Archae Solenhofen |
September 29, 2001 09:41PM |
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Sandy J. Perkins |
September 30, 2001 07:29PM |
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Anthony |
September 30, 2001 07:47PM |
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Anthony |
September 30, 2001 07:53PM |
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Archae Solenhofen |
September 30, 2001 08:31PM |
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Sandy J. Perkins |
October 01, 2001 10:19PM |
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Archae Solenhofen |
October 01, 2001 11:23PM |
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Sandy J. Perkins |
October 02, 2001 11:56PM |
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Archae Solenhofen |
October 03, 2001 03:52AM |
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Sandy J. Perkins |
October 03, 2001 09:01PM |
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Sandy J. Perkins |
September 29, 2001 07:56PM |
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Stephen Tonkin |
September 30, 2001 01:58AM |
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Anthony |
September 30, 2001 06:08AM |
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Stephen Tonkin |
September 30, 2001 07:43AM |
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Archae Solenhofen |
September 30, 2001 11:23AM |
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Stephen Tonkin |
September 30, 2001 11:36AM |
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Anthony |
September 30, 2001 07:59PM |
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Archae Solenhofen |
September 30, 2001 10:56PM |
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Anthony |
October 01, 2001 07:35AM |
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Frank Doernenburg |
October 01, 2001 04:06PM |
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Anthony |
October 01, 2001 04:37PM |
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Frank Doernenburg |
October 01, 2001 05:44PM |
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Archae Solenhofen |
October 01, 2001 10:11PM |
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R. Avry Wilson |
September 26, 2001 01:04PM |
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R. Avry Wilson |
September 26, 2001 07:31PM |
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Anthony |
September 27, 2001 06:19AM |
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R. Avry Wilson |
September 27, 2001 02:51PM |
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Anthony |
September 28, 2001 07:04AM |
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Claire |
September 28, 2001 05:12PM |