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Meteoritical Bulletin: Oxygen Isotope Plots

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Change values (separate multiple values with semicolons) -    δ18O:    δ17O:    Δ17O:
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Oxygen isotope composition of primitive achondrites (SNCs shown for comparison). Data for brachinites, winonaites, acapulcoite-lodranite clan from Greenwood et al. (2012). Data for ureilites from Clayton and Mayeda (1999). Data for Martian meteorites (SNCs) from Franchi et al. (1999) and compiled from laser fluorination analyses in the Meteoritical Bulletin. Δ17O calculated as: Δ17O = δ17O – 0.52δ18O. Individual winonaite and acapulcoite-lodranite clan samples are very highly susceptible to terrestrial weathering resulting in large shifts in δ18O and to a lesser extent Δ17O. Most analysis points for these two groups plotted on this diagram have been cleaned in EATG (ethanolamine thioglycollate) in order to reduce the influence of terrestrial weathering (see Greenwood et al., 2012 for further details). TFL: terrestrial fractionation line, Y&R: slope 1 line (Young and Russell, 1998), CCAM: carbonaceous chondrite anhydrous mineral line (Clayton et al., 1977; Clayton and Mayeda 1999).

References:


Data summary:
δ18Oδ17OΔ17O: givenΔ17O: linearComment
5.48702.3600-0.5370-0.493 
5.56702.3950-0.5440-0.5 
5.75802.4770-0.5630-0.517 

Nearest neighbors in MBDB (within 0.5 permil):
NameClassδ18Oδ17OΔ17O: calcΔ δ18OΔ δ17OΔ Δ17O
Northwest Africa 11807Winonaite5.56702.3950-0.5-0.04 -0.02 0
Northwest Africa 12543Winonaite5.58302.3450-0.558-0.02 -0.07 -0.05
Northwest Africa 11807Winonaite5.48702.3600-0.493-0.12 -0.05 0.01
Northwest Africa 11807Winonaite5.75802.4770-0.5170.15 0.07 -0.01
Northwest Africa 10851Winonaite5.43802.3450-0.483-0.17 -0.07 0.02
Northwest Africa 6369Iron, IAB complex5.39002.3500-0.453-0.21 -0.06 0.05
SilistraAchondrite-ung5.55002.6400-0.246-0.05 0.23 0.26
Northwest Africa 11729Eucrite-an5.54002.6800-0.201-0.06 0.27 0.3
Dhofar 1441Achondrite-ung5.50802.6750-0.189-0.1 0.26 0.31
Northwest Africa 4518Achondrite-ung5.47002.6600-0.184-0.13 0.25 0.32
Northwest Africa 4929Brachinite5.33002.4900-0.282-0.27 0.08 0.22
LaPaz Icefield 02205Lunar (basalt)5.60002.7000-0.212-0 0.29 0.29
MacAlpine Hills 88104Lunar (anorth)5.50002.7000-0.16-0.1 0.29 0.34
SilistraAchondrite-ung5.30002.5000-0.256-0.3 0.09 0.25
Thiel Mountains 07014Eucrite5.27002.5100-0.23-0.33 0.1 0.27
Northwest Africa 10637Brachinite5.27302.5260-0.216-0.33 0.12 0.29
Northwest Africa 7388Brachinite5.41302.7050-0.11-0.19 0.29 0.39
Northwest Africa 6023Brachinite-an5.22602.4910-0.227-0.38 0.08 0.28
Northwest Africa 10851Winonaite5.24202.2240-0.502-0.36 -0.19 0
Northwest Africa 2251Howardite5.20002.3000-0.404-0.4 -0.11 0.1
Northwest Africa 6065Achondrite-ung5.55802.8300-0.06-0.05 0.42 0.44
Northwest Africa 8059LL3.055.27702.6880-0.056-0.33 0.28 0.45
Northwest Africa 4375Winonaite5.88002.7400-0.3180.28 0.33 0.19
Ooldea 014Achondrite-prim-ung5.55101.9820-0.905-0.05 -0.43 -0.4
Elephant Moraine 87521Lunar (basalt)5.39002.7900-0.013-0.21 0.38 0.49
Northwest Africa 6023Brachinite-an5.16202.4450-0.239-0.44 0.03 0.26
Northwest Africa 4042Achondrite-ung5.17802.5390-0.154-0.43 0.13 0.35
Northwest Africa 6172Achondrite-ung5.35002.7800-0.002-0.25 0.37 0.5
Northwest Africa 8173Enst achon5.26502.7080-0.03-0.34 0.3 0.47
Northwest Africa 7388Brachinite5.63502.8620-0.0680.03 0.45 0.44
Northwest Africa 6065Achondrite-ung5.59802.8730-0.038-0.01 0.46 0.47
Northwest Africa 7904Brachinite5.34802.79700.016-0.26 0.39 0.52
Northwest Africa 5885Aubrite5.58502.8750-0.029-0.02 0.46 0.47
Ooldea 014Achondrite-prim-ung6.05602.2930-0.8560.45 -0.12 -0.35
Northwest Africa 6572Achondrite-ung5.61902.8810-0.0410.01 0.47 0.46
Abar al' Uj 012Lunar5.46002.86000.021-0.14 0.45 0.52
Graves Nunataks 06128Achondrite-ung5.63002.8900-0.0380.03 0.48 0.47
Northwest Africa 8785EL35.70702.8800-0.0880.1 0.47 0.42
Yamato 983885Lunar (anorth)5.65002.8900-0.0480.05 0.48 0.46
Northwest Africa 2828Aubrite5.50002.89000.03-0.1 0.48 0.53
Northwest Africa 2828Aubrite5.56002.90000.009-0.04 0.49 0.51
Northwest Africa 6023Brachinite-an5.11002.4020-0.255-0.49 -0.01 0.25
Northwest Africa 6077Achondrite-ung5.18002.6670-0.027-0.42 0.26 0.48
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