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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
4.83802.2690-0.2850-0.247 
5.11002.4020-0.2960-0.255 
5.16202.4450-0.2810-0.239 
5.22602.4910-0.2680-0.227 

Nearest neighbors in MBDB (within 0.5 permil):
NameClassδ18Oδ17OΔ17O: calcΔ δ18OΔ δ17OΔ Δ17O
Northwest Africa 10637Brachinite5.04802.4020-0.223-0.04 0 0.02
Old Homestead 003Howardite5.02002.3700-0.24-0.06 -0.03 0
Northwest Africa 1457Winonaite5.10002.3000-0.3520.02 -0.1 -0.11
Jiddat al Harasis 556Howardite4.98002.4800-0.11-0.1 0.08 0.13
Northwest Africa 10602Eucrite-melt breccia4.95202.3490-0.226-0.13 -0.05 0.02
Northwest Africa 2251Howardite5.20002.3000-0.4040.12 -0.1 -0.16
Northwest Africa 4042Achondrite-ung5.17802.5390-0.1540.09 0.14 0.09
Northwest Africa 11729Eucrite-an4.93402.3010-0.265-0.15 -0.1 -0.02
Dhofar 1983Lunar (feldsp. breccia)5.10002.6000-0.0520.02 0.2 0.19
El Médano 395Brachinite4.89702.3290-0.217-0.19 -0.07 0.02
Thiel Mountains 07014Eucrite5.27002.5100-0.230.19 0.11 0.01
Northwest Africa 8173Enst achon5.01302.6050-0.002-0.07 0.2 0.24
Northwest Africa 3151Brachinite4.86002.4200-0.107-0.22 0.02 0.13
Northwest Africa 10637Brachinite5.27302.5260-0.2160.19 0.12 0.03
Old Homestead 003Howardite4.88002.3000-0.238-0.2 -0.1 0
SilistraAchondrite-ung5.30002.5000-0.2560.22 0.1 -0.01
Northwest Africa 10851Winonaite5.24202.2240-0.5020.16 -0.18 -0.26
Northwest Africa 5400Achondrite-ung4.88002.5250-0.013-0.2 0.12 0.23
Northwest Africa 6448Winonaite5.13402.1670-0.5030.05 -0.23 -0.26
Northwest Africa 6448Winonaite5.15502.1660-0.5150.07 -0.24 -0.27
Northwest Africa 7904Brachinite4.99902.63400.035-0.09 0.23 0.28
Northwest Africa 10851Winonaite5.07802.1490-0.492-0.01 -0.25 -0.25
Northwest Africa 4537Aubrite5.02102.65000.039-0.06 0.25 0.28
Northwest Africa 4741Achondrite-ung4.99002.64000.045-0.09 0.24 0.29
Northwest Africa 7605Brachinite4.82202.3700-0.137-0.26 -0.03 0.1
Northwest Africa 5400Achondrite-ung5.06102.68100.049-0.02 0.28 0.29
Northwest Africa 6077Achondrite-ung5.18002.6670-0.0270.1 0.27 0.22
Northwest Africa 12543Winonaite5.11802.1200-0.5410.03 -0.28 -0.3
Northwest Africa 10637Brachinite4.79402.4050-0.088-0.29 0 0.15
Northwest Africa 5548Achondrite-ung5.00002.69000.09-0.08 0.29 0.33
Northwest Africa 7904Brachinite5.16602.69400.0080.08 0.29 0.25
Northwest Africa 6369Iron, IAB complex5.39002.3500-0.4530.31 -0.05 -0.21
Northwest Africa 5548Achondrite-ung5.08002.72000.078-0 0.32 0.32
Northwest Africa 8059LL3.055.27702.6880-0.0560.19 0.29 0.19
Northwest Africa 8173Enst achon5.26502.7080-0.030.18 0.31 0.21
Northwest Africa 10851Winonaite5.43802.3450-0.4830.35 -0.06 -0.24
Northwest Africa 7904Brachinite4.78102.2100-0.276-0.3 -0.19 -0.03
Al Huwaysah 010Achondrite-ung4.73002.3100-0.15-0.35 -0.09 0.09
Northwest Africa 5400Achondrite-ung5.22302.74100.0250.14 0.34 0.27
Northwest Africa 8124LL34.71802.56800.115-0.37 0.17 0.36
Northwest Africa 11807Winonaite5.48702.3600-0.4930.4 -0.04 -0.25
Northwest Africa 8059LL3.054.70202.2280-0.217-0.38 -0.17 0.02
Zag (b)Winonaite4.84002.0600-0.457-0.24 -0.34 -0.21
Northwest Africa 10423Eucrite-cm4.69002.2300-0.209-0.39 -0.17 0.03
Northwest Africa 2904Eucrite-pmict4.74002.1300-0.335-0.34 -0.27 -0.09
Northwest Africa 7388Brachinite5.41302.7050-0.110.33 0.3 0.13
Dar al Gani 670Martian (shergottite)4.95002.83000.256-0.13 0.43 0.5
Northwest Africa 10497Brachinite4.67002.2200-0.208-0.41 -0.18 0.03
Northwest Africa 12241Martian (shergottite)4.87502.80800.273-0.21 0.41 0.51
Larkman Nunatak 06319Martian (shergottite)4.92002.83000.272-0.16 0.43 0.51
Northwest Africa 7944Martian (shergottite)4.89202.81900.275-0.19 0.42 0.52
Northwest Africa 6172Achondrite-ung5.35002.7800-0.0020.27 0.38 0.24
Northwest Africa 6152Brachinite4.65002.2400-0.178-0.43 -0.16 0.06
Northwest Africa 4518Achondrite-ung5.47002.6600-0.1840.39 0.26 0.06
Northwest Africa 6152Brachinite4.65002.2300-0.188-0.43 -0.17 0.05
Northwest Africa 8679Martian (shergottite)4.93402.84500.279-0.15 0.44 0.52
Northwest Africa 7904Brachinite5.34802.79700.0160.26 0.4 0.26
Northwest Africa 4222Martian (shergottite)4.91002.85000.297-0.17 0.45 0.54
Northwest Africa 11807Winonaite5.56702.3950-0.50.48 -0.01 -0.26
Northwest Africa 10153Martian (nakhlite)4.96302.87000.289-0.12 0.47 0.53
Northwest Africa 8173Enst achon4.60002.40000.008-0.48 -0 0.25
Northwest Africa 10720Martian (nakhlite)4.90302.85400.304-0.18 0.45 0.55
Northwest Africa 8686Martian (shergottite)4.98402.87900.287-0.1 0.48 0.53
Northwest Africa 10720Martian (nakhlite)4.80202.80000.303-0.28 0.4 0.54
Elephant Moraine 87521Lunar (basalt)5.39002.7900-0.0130.31 0.39 0.23
Northwest Africa 10416Martian4.74002.76000.295-0.34 0.36 0.54
Northwest Africa 10593Martian (shergottite)4.71402.73600.285-0.37 0.33 0.53
Northwest Africa 10593Martian (shergottite)4.69102.71000.271-0.39 0.31 0.51
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