Chemical variations among L-chondrites. IV - Analyses, with petrographic notes, of 13 L-group and 3 LL-group chondrites

Details Chemical variations among L-chondrites. IV - Analyses, with petrographic notes, of 13 L-group and 3 LL-group chondrites Chemical variations among L-chondrites. IV - Analyses, with petrographic notes, of 13 L-group and 3 LL-group chondrites

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985metit..20...23j&link_type=abstract

Meteorites (ISSN 0026-1114), vol. 20, March 31, 1985, p. 23-36.

Computer Science

3

Chondrites, Meteoritic Composition, Petrography, Chemical Composition, Iron, Magnesium, Melting, Silicon, Sulfur

Scientific paper

Procedures are reviewed for selecting, preparing and analyzing meteorite samples, present new analyses of 16 ordinary chondrites, and discuss variations of Fe, S and Si in the L-group. A tendency for Fe/Mg, S/Mg and Si/Mg to be low in L chondrites of facies d to f testifies that post-metamorphic shock melting played a significant role in the chemical diversification of the L-group. However, these ratios also vary widely and sympathetically in melt-free chondrites, indicating that much of the L-group's chemical variation arose prior to thermal metamorphism and is in that sense primary. If all L chondrites come from one parent body, type-correlated chemical trends suggest: (1) that the body had a tradiational 'onion skin' structure, with metamorphic intensity increasing with depth; and (2) that it formed from material that became more homogeneous, slightly poorer in iron, and significantly richer in sulfur as accretion proceeded.

Affiliated with

Also associated with

No associations

Rating

Chemical variations among L-chondrites. IV - Analyses, with petrographic notes, of 13 L-group and 3 LL-group chondrites 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 Chemical variations among L-chondrites. IV - Analyses, with petrographic notes, of 13 L-group and 3 LL-group chondrites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chemical variations among L-chondrites. IV - Analyses, with petrographic notes, of 13 L-group and 3 LL-group chondrites will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-825286