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Table 1 The total carbon, total nitrogen, and isotopic compositions of CI and CO carbonaceous chondrites

From: Amino acid compositions in heated carbonaceous chondrites and their compound-specific nitrogen isotopic ratios

Meteorite Group TC (wt.%) TN (wt.%) C/N (wt ratio) δ13C (‰, vs. PDB) δ15N (‰, vs. air) Reference
Y-980115 CI1 3.8 0.09 41.0 −11.6 −2.8 This study
Orgueil CI1 3.75 0.15 25.4 −15.6 +46 Kerridge (1985)b
Ivuna CI1 3.7 0.19 19.5 −9.4 +52 Kerridge (1985)b
ALHA77003 CO3 0.33 0.005a 85.3 −12.7 −10.5a This study
Ornans CO3 0.12 0.0012 100 −16.0 −13 Kerridge (1985)b
  1. The profiles of CI and CO chondrites for total carbon, total nitrogen, and bulk isotopic compositions. The isotopic compositions of Y-980115 and ALHA77003 were obtained using EA/IRMS in this study
  2. aData from this study were the average of duplicate analyses (n = 2)
  3. bData were previously reported by Kerridge (1985) and references therein