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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
5.27602.2960-0.4890-0.448 
6.65503.0220-0.4910-0.439Δ17O off by 0.052
5.84302.5880-0.4970-0.45 
8.19703.9400-0.3880-0.322Δ17O off by 0.066
6.01902.6660-0.5120-0.464 
5.88102.5770-0.5280-0.481 

Nearest neighbors in MBDB (within 0.5 permil):
NameClassδ18Oδ17OΔ17O: calcΔ δ18OΔ δ17OΔ Δ17O
Northwest Africa 11729Eucrite-an6.31203.0620-0.220 0.21 0.21
Ooldea 014Achondrite-prim-ung6.56702.7660-0.6490.26 -0.08 -0.21
Aridal 010Brachinite6.17003.1000-0.108-0.14 0.25 0.33
Northwest Africa 4024Winonaite6.60003.0100-0.4220.29 0.16 0.01
Dhofar 732Achondrite-ung6.64002.7700-0.6830.33 -0.08 -0.25
Kota-KotaEH36.22103.1920-0.043-0.09 0.34 0.39
Graves Nunataks 06128Achondrite-ung6.01003.0400-0.085-0.3 0.19 0.35
Graves Nunataks 06128Achondrite-ung6.01003.0500-0.075-0.3 0.2 0.36
HvittisEL66.02703.0820-0.052-0.28 0.23 0.38
PillistferEL66.03903.0990-0.041-0.27 0.25 0.39
Ooldea 014Achondrite-prim-ung6.16902.4930-0.715-0.14 -0.36 -0.28
Ghadduwah 001Lunar (anorth)6.15203.1980-0.001-0.16 0.35 0.43
Mount DeWitt 12007Lunar6.05003.1300-0.016-0.26 0.28 0.42
QingzhenEH36.08003.1600-0.002-0.23 0.31 0.43
Northwest Africa 12821EL36.09103.16800.001-0.22 0.32 0.43
Almahata SittaUreilite-an6.22003.2300-0.004-0.09 0.38 0.43
Northwest Africa 12592Lunar (frag. breccia)6.17403.21700.007-0.14 0.37 0.44
KhairpurEL66.08903.17300.007-0.22 0.32 0.44
Almahata SittaUreilite-an6.26003.2500-0.005-0.05 0.4 0.43
Northwest Africa 11962Lunar6.03003.14000.004-0.28 0.29 0.44
Galb InalLunar6.19803.23800.015-0.11 0.39 0.45
Northwest Africa 12593Lunar (frag. breccia)6.10603.20300.028-0.21 0.35 0.46
Northwest Africa 5517Achondrite-ung6.61802.5700-0.8710.31 -0.28 -0.44
PillistferEL66.21003.25000.021-0.1 0.4 0.45
Northwest Africa 11071EH-melt rock5.99603.12000.002-0.32 0.27 0.44
Almahata SittaUreilite-an6.17003.24000.032-0.14 0.39 0.47
Northwest Africa 12592Lunar (frag. breccia)6.33303.2660-0.0270.02 0.42 0.41
Northwest Africa 8785EL36.04203.18000.038-0.27 0.33 0.47
Northwest Africa 3136Lunar (basalt)5.96003.10000.001-0.35 0.25 0.43
Northwest Africa 11444Lunar (melt breccia)6.28003.28000.014-0.03 0.43 0.45
Northwest Africa 12821EL36.06803.21600.061-0.24 0.37 0.49
Dhofar 1436Lunar6.24403.28600.039-0.07 0.44 0.47
Northwest Africa 4375Winonaite5.88002.7400-0.318-0.43 -0.11 0.12
Northwest Africa 13531Lunar (feldsp. breccia)5.93303.0830-0.002-0.38 0.23 0.43
Northwest Africa 12980Lunar (melt breccia)6.28903.29400.024-0.02 0.45 0.46
Almahata SittaUreilite-an6.05003.21000.064-0.26 0.36 0.5
Northwest Africa 7214EH-melt rock6.32703.29600.0060.02 0.45 0.44
Northwest Africa 12821EL35.89203.0450-0.019-0.42 0.2 0.42
Northwest Africa 12821EL36.02303.21200.08-0.29 0.36 0.51
Northwest Africa 12821EL36.08103.25400.092-0.23 0.41 0.53
Northwest Africa 8785EL35.84902.9220-0.119-0.46 0.07 0.31
Jajh deh Kot LaluEL65.88603.0510-0.01-0.43 0.2 0.42
Saint-SauveurEH55.93003.13000.046-0.38 0.28 0.48
AbeeEH46.08003.27000.108-0.23 0.42 0.54
Northwest Africa 12593Lunar (frag. breccia)6.36103.32800.020.05 0.48 0.45
Northwest Africa 4799EH-melt rock6.32703.33100.0410.02 0.48 0.47
Sayh al Uhaymir 188EL45.99003.21300.098-0.32 0.36 0.53
Northwest Africa 12997Lunar (troct)5.88003.07450.017-0.43 0.23 0.45
Northwest Africa 7611Lunar5.93103.16100.077-0.38 0.31 0.51
IndarchEH46.05603.27500.126-0.26 0.43 0.56
Northwest Africa 4415EL66.38803.34000.0180.08 0.49 0.45
Ghadduwah 001Lunar (anorth)5.85203.0420-0.001-0.46 0.19 0.43
Northwest Africa 4416EL66.38503.34200.0220.07 0.49 0.46
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