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Meteoritical Bulletin: Oxygen Isotope Plots

Change plot type:
Change values (separate multiple values with semicolons) -    δ18O:    δ17O:    Δ17O:
Change title:

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).


Data summary:
δ18Oδ17OΔ17O: givenΔ17O: linearComment

Nearest neighbors in MBDB (within 0.5 permil):
NameClassδ18Oδ17OΔ17O: calcΔ δ18OΔ δ17OΔ Δ17O
Mount DeWitt 12007Lunar6.05003.1300-0.016-0.12 0.03 0.09
Galb InalLunar6.19803.23800.0150.03 0.14 0.12
Northwest Africa 11962Lunar6.03003.14000.004-0.14 0.04 0.11
Northwest Africa 11729Eucrite-an6.31203.0620-0.220.14 -0.04 -0.11
Northwest Africa 8785EL36.04203.18000.038-0.13 0.08 0.15
Graves Nunataks 06128Achondrite-ung6.01003.0500-0.075-0.16 -0.05 0.03
Graves Nunataks 06128Achondrite-ung6.01003.0400-0.085-0.16 -0.06 0.02
Dhofar 1436Lunar6.24403.28600.0390.07 0.19 0.15
Northwest Africa 3136Lunar (basalt)5.96003.10000.001-0.21 0 0.11
Northwest Africa 11444Lunar (melt breccia)6.28003.28000.0140.11 0.18 0.12
Sayh al Uhaymir 188EL45.99003.21300.098-0.18 0.11 0.21
Northwest Africa 7611Lunar5.93103.16100.077-0.24 0.06 0.19
Northwest Africa 4416EL66.38503.34200.0220.22 0.24 0.13
Northwest Africa 4415EL66.38803.34000.0180.22 0.24 0.13
Northwest Africa 3136Lunar (basalt)5.83003.06000.028-0.34 -0.04 0.14
Northwest Africa 8785EL35.82002.9960-0.03-0.35 -0.1 0.08
Northwest Africa 8061H3.106.32003.43400.1480.15 0.33 0.26
Northwest Africa 8785EL35.84902.9220-0.119-0.32 -0.18 -0.01
Kalahari 008Lunar (anorth)6.52003.3200-0.070.35 0.22 0.04
Dhofar 1015EH45.74703.11600.128-0.42 0.02 0.24
Northwest Africa 4024Winonaite6.60003.0100-0.4220.43 -0.09 -0.31
Northwest Africa 4375Winonaite5.88002.7400-0.318-0.29 -0.36 -0.21
Northwest Africa 10989Lunar6.51003.42000.0350.34 0.32 0.14
Northwest Africa 6572Achondrite-ung5.70102.9560-0.009-0.47 -0.14 0.1
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