[meteorite-list] Geno-, mono-, polymict, and xenolithic -- Part 3 of 3

From: MexicoDoug_at_aol.com <MexicoDoug_at_meteoritecentral.com>
Date: Mon Jul 11 15:34:55 2005
Message-ID: <201.55eab89.300423d8_at_aol.com>

Interesting. Tendency has been to "extend" vocabulary w/ the primitive
concretions called "chondrites" as if they were "igneous" (=>differentiated), and
change the "unrelated" inclusions to include related ones. The greatest
scientific diversity is always had when you ask a group of scientists to define
what everyone already takes for granted:)
 
""Strange stone". At this rate I'm just gonna call all my meteorites
xenoliths. I wonder what was wrong with the word clast, and others. Maybe the
marketing team has found that collectors pay more for noble references (to
Xenon), or getting from point A to B (Xeno)?
 
Good question.
 
Saludos, Doug
 
Bernd P. wrote:

Allende, CV3, and other carbonaceous chondrites contain xenoliths.
 
Bernd also cited:
 
NORTON O. R. (2002) The Cambridge Encyclopedia of Meteorites,
Glossary, pp. 343, 344, 345, 347:
xenolith: an inclusion of a foreign rock in an igneous host rock that is not
chemically related to the host rock.

McSWEEN H.Y. (1999) Meteorites and Their Parent Planets
(Cambridge University Press, Glossary, p. 288):
xenolith: an inclusion of a foreign rock trapped within an igneous rock.
 
HUTCHISON R. (2004) Meteorites: A Petrologic, Chemical, and Isotopic
Synthesis (Cambridge Planetary Science Series, pp. 506, Glossary, p. 444):
xenolith: a foreign rock; a lithic fragment genetically distinct from its
host rock or melt; has been extended to include fragments of related rock,
termed cognate xenoliths.
 
 
 
Received on Mon 11 Jul 2005 03:34:48 PM PDT