[meteorite-list] cumulate vs. noncumulate eucrites

From: bernd.pauli at paulinet.de <bernd.pauli_at_meteoritecentral.com>
Date: 01 Dec 2006 19:52:32 UT
Message-ID: <DIIE.000000290000123E_at_paulinet.de>

Mike wrote: We should also understand "cumulate".

Noncumulate eucrites: have crystallized from basaltic melts on the
s u r f a c e of the HED parent body. Millbillillie is such a non-
cumulate eucrite.

Cumulate eucrites (O.R. Norton, Encyclopedia, Glossary, p. 342): An
igneous rock made up of relatively large crystals that settled out of
a magma by gravity and accumulated on the *floor of a magma chamber*.

Best wishes,

Bernd
Received on Fri 01 Dec 2006 02:52:32 PM PST