Rare earth abundances in a high-temperature peridotite intrusion

Details Rare earth abundances in a high-temperature peridotite intrusion Rare earth abundances in a high-temperature peridotite intrusion

Nov 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969gecoa..33.1429f&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 33, Issue 11, pp.1429-1447

Statistics

Applications

26

Scientific paper

Rare-earth (RE) abundances are reported for several rocks and separated minerals of the Lizard Peridotite intrusion, Cornwall, England. The results are interpreted as providing evidence that this peridotite equilibrated with a basic magma either as a deep-seated accumulate or as a residue left after partial melting. Crustal-mantle RE mass balances indicate that the RE abundances of the primary peridotite are consistent with chondritic RE abundances for undifferentiated terrestrial material. The RE abundances of the peridotite and contact rocks are consistent with an interpretation of contact metamorphism, but other interpretations for the origin of the metamorphic country rocks can not be eliminated on the basis of the RE data. RE analysis of unaltered minerals indicate that serpentinization has removed some of the light REE from the peridotite. The data for unaltered minerals are utilized to determine RE distribution coefficients among coexisting ultramafic phases. There are some significant differences between these distribution coefficients and the values determined from phenocryst data. The applications of the Lizard data to partial melting models for basalt generation indicate that residue mineralogies which account for basaltic major element composition do not result in correct basaltic RE abundances. All partial melting models require that the basaltic source rocks have RE absolute abundances about 4 times the chondritic average.

Affiliated with

Also associated with

No associations

Rating

Rare earth abundances in a high-temperature peridotite intrusion does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Rare earth abundances in a high-temperature peridotite intrusion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rare earth abundances in a high-temperature peridotite intrusion will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1412826