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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
5.88002.7400-0.3100-0.318 

Nearest neighbors in MBDB (within 0.5 permil):
NameClassδ18Oδ17OΔ17O: calcΔ δ18OΔ δ17OΔ Δ17O
Northwest Africa 8785EL35.84902.9220-0.119-0.03 0.18 0.2
Northwest Africa 8785EL35.70702.8800-0.088-0.17 0.14 0.23
Northwest Africa 8785EL35.82002.9960-0.03-0.06 0.26 0.29
Northwest Africa 7388Brachinite5.63502.8620-0.068-0.25 0.12 0.25
Yamato 983885Lunar (anorth)5.65002.8900-0.048-0.23 0.15 0.27
Northwest Africa 6572Achondrite-ung5.70102.9560-0.009-0.18 0.22 0.31
LaPaz Icefield 02205Lunar (basalt)5.60002.7000-0.212-0.28 -0.04 0.11
Northwest Africa 11807Winonaite5.75802.4770-0.517-0.12 -0.26 -0.2
Graves Nunataks 06128Achondrite-ung5.63002.8900-0.038-0.25 0.15 0.28
Northwest Africa 6572Achondrite-ung5.61902.8810-0.041-0.26 0.14 0.28
Northwest Africa 12821EL35.89203.0450-0.0190.01 0.31 0.3
Northwest Africa 032Lunar (basalt)5.63002.9200-0.008-0.25 0.18 0.31
Northwest Africa 6065Achondrite-ung5.59802.8730-0.038-0.28 0.13 0.28
Northwest Africa 7493Lunar (feldsp. breccia)5.64602.96300.027-0.23 0.22 0.34
Northwest Africa 3136Lunar (basalt)5.83003.06000.028-0.05 0.32 0.35
Northwest Africa 5885Aubrite5.58502.8750-0.029-0.3 0.14 0.29
Graves Nunataks 06128Achondrite-ung6.01003.0400-0.0850.13 0.3 0.23
Northwest Africa 6065Achondrite-ung5.55802.8300-0.06-0.32 0.09 0.26
Graves Nunataks 06128Achondrite-ung6.01003.0500-0.0750.13 0.31 0.24
SilistraAchondrite-ung5.55002.6400-0.246-0.33 -0.1 0.07
Northwest Africa 11729Eucrite-an5.54002.6800-0.201-0.34 -0.06 0.12
Northwest Africa 3333Lunar5.59002.94000.033-0.29 0.2 0.35
Northwest Africa 4642Enst achon5.61402.97500.056-0.27 0.24 0.37
Northwest Africa 2828EL-melt rock5.56002.90000.009-0.32 0.16 0.33
Yamato 981031Lunar (anorth)5.64003.01000.077-0.24 0.27 0.39
Northwest Africa 3136Lunar (basalt)5.96003.10000.0010.08 0.36 0.32
Dhofar 1441Achondrite-ung5.50802.6750-0.189-0.37 -0.07 0.13
Ooldea 014Achondrite-prim-ung6.16902.4930-0.7150.29 -0.25 -0.4
Northwest Africa 12821EL35.84603.11900.079-0.03 0.38 0.4
MacAlpine Hills 88104Lunar (anorth)5.50002.7000-0.16-0.38 -0.04 0.16
Northwest Africa 8061H3.105.63203.04000.111-0.25 0.3 0.43
Northwest Africa 6077Achondrite-ung5.53602.93200.053-0.34 0.19 0.37
Dhofar 1015EH45.74703.11600.128-0.13 0.38 0.45
Northwest Africa 2828EL-melt rock5.50002.89000.03-0.38 0.15 0.35
Northwest Africa 4518Achondrite-ung5.47002.6600-0.184-0.41 -0.08 0.13
Northwest Africa 7611Lunar5.93103.16100.0770.05 0.42 0.39
Mount DeWitt 12007Lunar6.05003.1300-0.0160.17 0.39 0.3
Northwest Africa 11962Lunar6.03003.14000.0040.15 0.4 0.32
Northwest Africa 6172Achondrite-ung5.54003.00000.119-0.34 0.26 0.44
Abar al' Uj 012Lunar5.46002.86000.021-0.42 0.12 0.34
Northwest Africa 6424Achondrite-ung5.46002.89000.051-0.42 0.15 0.37
Northwest Africa 8061H3.105.65203.13900.2-0.23 0.4 0.52
Aridal 010Brachinite6.17003.1000-0.1080.29 0.36 0.21
Northwest Africa 11807Winonaite5.56702.3950-0.5-0.31 -0.35 -0.18
Northwest Africa 7388Brachinite5.41302.7050-0.11-0.47 -0.04 0.21
Northwest Africa 8785EL36.04203.18000.0380.16 0.44 0.36
Northwest Africa 12821EL36.09103.16800.0010.21 0.43 0.32
Ooldea 014Achondrite-prim-ung6.05602.2930-0.8560.18 -0.45 -0.54
Sayh al Uhaymir 188EL45.99003.21300.0980.11 0.47 0.42
Elephant Moraine 87521Lunar (basalt)5.39002.7900-0.013-0.49 0.05 0.3
Northwest Africa 12821EL36.02303.21200.080.14 0.47 0.4
Northwest Africa 12543Winonaite5.58302.3450-0.558-0.3 -0.4 -0.24
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