[meteorite-list] Tektite Information

From: Sterling K. Webb <sterling_k_webb_at_meteoritecentral.com>
Date: Sun, 29 Aug 2010 17:10:04 -0500
Message-ID: <91C11AA3E7804C03AA056D0D9BFFD912_at_ATARIENGINE2>

Jean-Alix,

Thanks. An excellent book. It understands tektites,
which is to say it admits it doesn't understand tektites:

"These unusual glassy bodies, especially tektites
and microtektites, have been the objects of active,
intense, and frequently controversial study (for
reviews see O'Keefe, 1963, 1976; papers in
L. D. Pye et al., 1984 and Konta, 1988;
Koeberl, 1986, 1994a)"


"...the mechanics of their formation and the factors
that govern their distribution are still not well
understood. Exactly when do tektites form during the
impact process, and how are they distributed so widely?
What is the relation of tektites to other types of impact
melts, and especially to similar dense glasses found in
and around certain craters? Why do tektites appear
to form only in a few craters, although numerous young
structures of the required minimum size (probably >10 km
diameter, based on the diameter of the Bosumtwi Crater) are
known? What are the relations of tektite-forming events to
other major terrestrial changes like extinctions and magnetic
reversals? It is clear that the small fraction of impact melt
that produces tektites during impact events will continue to
generate a large amount of discussion and research."

He's wrong about that last. The number of specialists
concentrating on tektites primarily is minute, tiny. For
researchers, tektite questions are a nuisance.

Thanks! Great book.


Sterling K. Webb
-------------------------------------------------------------------------------
----- Original Message -----
From: <barrat at univ-brest.fr>
To: "Sterling K. Webb" <sterling_k_webb at sbcglobal.net>
Cc: "Meteorite List" <meteorite-list at meteoritecentral.com>
Sent: Sunday, August 29, 2010 4:25 PM
Subject: Re: [meteorite-list] Tektite Information


> Hi,
>
> this book is interesting, but many works have been made on tektites
> since
> 1976... (See for example all the Christian Koeberl's papers...)
>
> By the way, a very interesting link for people interested by impact
> processes is
> the book entitled "traces of catastrophe" that can be downloaded on
> the lpi
> website:
>
> http://www.lpi.usra.edu/publications/books/CB-954/CB-954.intro.html
>
>
> Jean-Alix
>
>
>
> Selon "Sterling K. Webb" <sterling_k_webb at sbcglobal.net>:
>
>> Hi, List,
>>
>> The first five chapters of John O'Keefe's 1976 book,
>> "Tektites and Their Origin," long out-of-print (Amazon
>> $200) had been posted for many years on a website
>> ("originoftektikes.com") but is now a dead link.
>>
>> Those first five chapters of O'Keefe's "Tektites and
>> Their
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Received on Sun 29 Aug 2010 06:10:04 PM PDT