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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
4.67002.2200-0.2200-0.208 

Nearest neighbors in MBDB (within 0.5 permil):
NameClassδ18Oδ17OΔ17O: calcΔ δ18OΔ δ17OΔ Δ17O
Northwest Africa 10423Eucrite-cm4.69002.2300-0.2090.02 0.01 -0
Northwest Africa 6152Brachinite4.65002.2300-0.188-0.02 0.01 0.02
Northwest Africa 6152Brachinite4.65002.2400-0.178-0.02 0.02 0.03
Northwest Africa 8059LL3.054.70202.2280-0.2170.03 0.01 -0.01
El Médano 395Brachinite4.58202.1700-0.213-0.09 -0.05 -0
Al Huwaysah 010Achondrite-ung4.73002.3100-0.150.06 0.09 0.06
Northwest Africa 2904Eucrite-pmict4.58002.1600-0.222-0.09 -0.06 -0.01
Northwest Africa 7904Brachinite4.78102.2100-0.2760.11 -0.01 -0.07
Northwest Africa 2904Eucrite-pmict4.74002.1300-0.3350.07 -0.09 -0.13
Northwest Africa 3213Mesosiderite4.55002.1300-0.236-0.12 -0.09 -0.03
Northwest Africa 4418Mesosiderite4.52402.1450-0.207-0.15 -0.08 0
Northwest Africa 12320Angrite4.54502.3390-0.024-0.13 0.12 0.18
Northwest Africa 6023Brachinite-an4.83802.2690-0.2470.17 0.05 -0.04
Northwest Africa 8173Enst achon4.60002.40000.008-0.07 0.18 0.22
Northwest Africa 7605Brachinite4.82202.3700-0.1370.15 0.15 0.07
Northwest Africa 10637Brachinite4.79402.4050-0.0880.12 0.19 0.12
Old Homestead 003Howardite4.88002.3000-0.2380.21 0.08 -0.03
Northwest Africa 12004Angrite4.44002.2580-0.051-0.23 0.04 0.16
Northwest Africa 6292Achondrite-ung4.55002.42000.054-0.12 0.2 0.26
Zag (b)Winonaite4.84002.0600-0.4570.17 -0.16 -0.25
Northwest Africa 5400Achondrite-ung4.48602.36700.034-0.18 0.15 0.24
Northwest Africa 12004Angrite4.43102.2850-0.019-0.24 0.07 0.19
Northwest Africa 4882Brachinite4.45502.0950-0.222-0.22 -0.13 -0.01
Northwest Africa 4882Brachinite4.45502.0950-0.222-0.22 -0.13 -0.01
El Médano 395Brachinite4.89702.3290-0.2170.23 0.11 -0.01
Northwest Africa 12320Angrite4.41602.2680-0.028-0.25 0.05 0.18
Northwest Africa 12320Angrite4.40702.2810-0.011-0.26 0.06 0.2
Northwest Africa 3151Brachinite4.86002.4200-0.1070.19 0.2 0.1
Northwest Africa 11729Eucrite-an4.93402.3010-0.2650.26 0.08 -0.06
Northwest Africa 4395Diogenite4.39002.0900-0.193-0.28 -0.13 0.02
Northwest Africa 10602Eucrite-melt breccia4.95202.3490-0.2260.28 0.13 -0.02
Northwest Africa 7025Mesosiderite4.38702.0820-0.199-0.28 -0.14 0.01
Northwest Africa 4636Mesosiderite4.38002.0900-0.188-0.29 -0.13 0.02
Northwest Africa 8659Eucrite4.37602.0830-0.193-0.29 -0.14 0.02
Allan Hills 12073Eucrite4.40002.0400-0.248-0.27 -0.18 -0.04
Ramlat as Sahmah 309Brachinite4.37002.0900-0.182-0.3 -0.13 0.03
Northwest Africa 4882Brachinite4.36802.0640-0.207-0.3 -0.16 0
Northwest Africa 4882Brachinite4.36802.0640-0.207-0.3 -0.16 0
Northwest Africa 12543Winonaite4.66201.8800-0.544-0.01 -0.34 -0.34
Northwest Africa 8124LL34.71802.56800.1150.05 0.35 0.32
Northwest Africa 4872Brachinite4.35402.0610-0.203-0.32 -0.16 0.01
Northwest Africa 4872Brachinite4.35402.0610-0.203-0.32 -0.16 0.01
Los Vientos 263Pallasite, ungrouped4.34002.0900-0.167-0.33 -0.13 0.04
Dhofar 378Martian (shergottite)4.46002.52000.201-0.21 0.3 0.41
Northwest Africa 11917Winonaite4.54101.8760-0.485-0.13 -0.34 -0.28
Northwest Africa 5400Achondrite-ung4.88002.5250-0.0130.21 0.31 0.2
Old Homestead 003Howardite5.02002.3700-0.240.35 0.15 -0.03
Northwest Africa 8686Martian (shergottite)4.41702.51100.214-0.25 0.29 0.42
Northwest Africa 12004Angrite4.28402.1970-0.031-0.39 -0.02 0.18
Jiddat al Harasis 556Howardite4.98002.4800-0.110.31 0.26 0.1
Northwest Africa 10593Martian (shergottite)4.48402.58200.25-0.19 0.36 0.46
Northwest Africa 10851Winonaite5.07802.1490-0.4920.41 -0.07 -0.28
Northwest Africa 12397Mesosiderite4.32301.9920-0.256-0.35 -0.23 -0.05
Northwest Africa 4872Brachinite4.30802.0120-0.228-0.36 -0.21 -0.02
Northwest Africa 4872Brachinite4.30802.0120-0.228-0.36 -0.21 -0.02
Northwest Africa 12241Martian (shergottite)4.62002.63500.233-0.05 0.42 0.44
Northwest Africa 10637Brachinite5.04802.4020-0.2230.38 0.18 -0.01
Northwest Africa 2986Martian (shergottite)4.45002.58000.266-0.22 0.36 0.47
Northwest Africa 12522Martian (shergottite)4.42602.56700.265-0.24 0.35 0.47
El Médano 395Brachinite4.29002.0200-0.211-0.38 -0.2 -0
Northwest Africa 5718Martian (shergottite)4.47002.60000.276-0.2 0.38 0.48
Northwest Africa 10153Martian (nakhlite)4.44602.59100.279-0.22 0.37 0.49
Northwest Africa 7032Martian (shergottite)4.42302.57700.277-0.25 0.36 0.49
Northwest Africa 8679Martian (shergottite)4.56202.64200.27-0.11 0.42 0.48
Allan Hills 84001Martian (OPX)4.60002.65000.258-0.07 0.43 0.47
Northwest Africa 1457Winonaite5.10002.3000-0.3520.43 0.08 -0.14
Northwest Africa 6474Brachinite4.23402.1810-0.021-0.44 -0.04 0.19
Acfer 366CH34.61001.7810-0.616-0.06 -0.44 -0.41
Northwest Africa 10416Martian4.50002.63000.29-0.17 0.41 0.5
Northwest Africa 10416Martian4.39202.57300.289-0.28 0.35 0.5
Northwest Africa 8649LL3.054.46402.62300.302-0.21 0.4 0.51
Northwest Africa 10416Martian4.31002.50000.259-0.36 0.28 0.47
Northwest Africa 2986Martian (shergottite)4.59002.67000.283-0.08 0.45 0.49
Northwest Africa 6963Martian (shergottite)4.33202.52800.275-0.34 0.31 0.48
Northwest Africa 10720Martian (nakhlite)4.58102.66900.287-0.09 0.45 0.5
Northwest Africa 12543Winonaite5.11802.1200-0.5410.45 -0.1 -0.33
Thiel Mountains 07009EL64.21002.21000.021-0.46 -0.01 0.23
Northwest Africa 10808Martian (shergottite)4.66002.68300.26-0.01 0.46 0.47
Northwest Africa 10593Martian (shergottite)4.37302.57600.302-0.3 0.36 0.51
Northwest Africa 10153Martian (nakhlite)4.57902.67700.296-0.09 0.46 0.5
Northwest Africa 7032Martian (shergottite)4.59902.68100.29-0.07 0.46 0.5
Northwest Africa 10416Martian4.53902.66800.308-0.13 0.45 0.52
Northwest Africa 6448Winonaite5.13402.1670-0.5030.46 -0.05 -0.29
Yamato 980459Martian (shergottite)4.31002.52000.279-0.36 0.3 0.49
Yamato 980459Martian (shergottite)4.31002.52000.279-0.36 0.3 0.49
Northwest Africa 5718Martian (shergottite)4.29002.50000.269-0.38 0.28 0.48
Northwest Africa 8694Martian (Chassignite)4.55002.68000.314-0.12 0.46 0.52
Northwest Africa 8656Martian (shergottite)4.41702.62300.326-0.25 0.4 0.53
Northwest Africa 6023Brachinite-an5.11002.4020-0.2550.44 0.18 -0.05
Northwest Africa 2627Acapulcoite4.93001.8200-0.7440.26 -0.4 -0.54
Northwest Africa 7387Martian (shergottite)4.54002.68000.319-0.13 0.46 0.53
Sayh al Uhaymir 094Martian (shergottite)4.29002.51000.279-0.38 0.29 0.49
Dar al Gani 476Martian (shergottite)4.57002.69000.314-0.1 0.47 0.52
Northwest Africa 6448Winonaite5.15502.1660-0.5150.49 -0.05 -0.31
Northwest Africa 10593Martian (shergottite)4.69102.71000.2710.02 0.49 0.48
Northwest Africa 5363Achondrite-ung4.18302.1520-0.023-0.49 -0.07 0.19
Northwest Africa 7944Martian (shergottite)4.37402.61500.341-0.3 0.4 0.55
Jiddat al Harasis 395Diogenite4.23001.9900-0.21-0.44 -0.23 -0
Northwest Africa 10416Martian4.62702.71600.31-0.04 0.5 0.52
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