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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
5.10002.3000-0.4000-0.352 

Nearest neighbors in MBDB (within 0.5 permil):
NameClassδ18Oδ17OΔ17O: calcΔ δ18OΔ δ17OΔ Δ17O
Northwest Africa 2251Howardite5.20002.3000-0.4040.1 0 -0.05
Northwest Africa 6023Brachinite-an5.11002.4020-0.2550.01 0.1 0.1
Old Homestead 003Howardite5.02002.3700-0.24-0.08 0.07 0.11
Northwest Africa 10637Brachinite5.04802.4020-0.223-0.05 0.1 0.13
Northwest Africa 13917Winonaite5.10702.1790-0.4770.01 -0.12 -0.12
Northwest Africa 6448Winonaite5.13402.1670-0.5030.03 -0.13 -0.15
Northwest Africa 13432Winonaite5.19602.1960-0.5060.1 -0.1 -0.15
Northwest Africa 6448Winonaite5.15502.1660-0.5150.06 -0.13 -0.16
Northwest Africa 13917Winonaite5.23602.2320-0.4910.14 -0.07 -0.14
Northwest Africa 10851Winonaite5.07802.1490-0.492-0.02 -0.15 -0.14
Northwest Africa 10602Eucrite-melt breccia4.95202.3490-0.226-0.15 0.05 0.13
Northwest Africa 12532Brachinite5.11902.4560-0.2060.02 0.16 0.15
Northwest Africa 6023Brachinite-an5.16202.4450-0.2390.06 0.15 0.11
Northwest Africa 10851Winonaite5.24202.2240-0.5020.14 -0.08 -0.15
Northwest Africa 11729Eucrite-an4.93402.3010-0.265-0.17 0 0.09
Errachidia 004Winonaite5.27602.2960-0.4480.18 -0 -0.1
Northwest Africa 12543Winonaite5.11802.1200-0.5410.02 -0.18 -0.19
Grapevine MesaCBa4.99802.4560-0.143-0.1 0.16 0.21
Northwest Africa 12951Winonaite5.03502.1190-0.499-0.06 -0.18 -0.15
Northwest Africa 12532Brachinite4.90802.3450-0.207-0.19 0.05 0.14
El Médano 395Brachinite4.89702.3290-0.217-0.2 0.03 0.13
Jiddat al Harasis 556Howardite4.98002.4800-0.11-0.12 0.18 0.24
Old Homestead 003Howardite4.88002.3000-0.238-0.22 0 0.11
Kota-KotaEH35.12002.5200-0.1420.02 0.22 0.21
Northwest Africa 6023Brachinite-an5.22602.4910-0.2270.13 0.19 0.13
Allan Hills 88046EH34.90502.4200-0.131-0.19 0.12 0.22
Northwest Africa 13432Winonaite5.32802.2720-0.4990.23 -0.03 -0.15
MacAlpine Hills 88136EL35.00102.5100-0.091-0.1 0.21 0.26
Northwest Africa 4042Achondrite-ung5.17802.5390-0.1540.08 0.24 0.2
Happy CanyonEL6/74.98602.5260-0.067-0.11 0.23 0.29
Northwest Africa 6023Brachinite-an4.83802.2690-0.247-0.26 -0.03 0.11
Northwest Africa 3151Brachinite4.86002.4200-0.107-0.24 0.12 0.24
Thiel Mountains 07014Eucrite5.27002.5100-0.230.17 0.21 0.12
Grapevine MesaCBa5.28302.0910-0.6560.18 -0.21 -0.3
Northwest Africa 13917Winonaite4.95902.0550-0.524-0.14 -0.25 -0.17
SilistraAchondrite-ung5.30002.5000-0.2560.2 0.2 0.1
Northwest Africa 10637Brachinite5.27302.5260-0.2160.17 0.23 0.14
Northwest Africa 7605Brachinite4.82202.3700-0.137-0.28 0.07 0.21
BishopvilleAubrite5.08502.5870-0.057-0.01 0.29 0.29
Mayo BelwaAubrite4.95302.5470-0.029-0.15 0.25 0.32
Northwest Africa 6369Iron, IAB complex5.39002.3500-0.4530.29 0.05 -0.1
Norton CountyAubrite4.97902.5720-0.017-0.12 0.27 0.33
Northwest Africa 4929Brachinite5.33002.4900-0.2820.23 0.19 0.07
Dhofar 1983Lunar (feldsp. breccia)5.10002.6000-0.0520 0.3 0.3
Yamato 691EH34.83002.4600-0.052-0.27 0.16 0.3
Northwest Africa 5400Achondrite-ung4.88002.5250-0.013-0.22 0.23 0.34
Northwest Africa 8173Enst achon5.01302.6050-0.002-0.09 0.31 0.35
Northwest Africa 10637Brachinite4.79402.4050-0.088-0.31 0.11 0.26
Elephant Moraine 90033Aubrite5.02602.61900.005-0.07 0.32 0.36
Lewis Cliff 88714EL65.01802.61800.009-0.08 0.32 0.36
Northwest Africa 12951Winonaite4.88702.0490-0.492-0.21 -0.25 -0.14
Norton CountyAubrite5.02002.62000.01-0.08 0.32 0.36
Northwest Africa 7904Brachinite4.78102.2100-0.276-0.32 -0.09 0.08
South OmanEH4/55.41002.4400-0.3730.31 0.14 -0.02
Northwest Africa 10851Winonaite5.43802.3450-0.4830.34 0.05 -0.13
BusteeAubrite4.83002.5100-0.002-0.27 0.21 0.35
PesyanoeAubrite4.78902.4570-0.033-0.31 0.16 0.32
Northwest Africa 7904Brachinite4.99902.63400.035-0.1 0.33 0.39
Zag (b)Winonaite4.84002.0600-0.457-0.26 -0.24 -0.1
ZakłodzieEnst achon-ung4.86002.56000.033-0.24 0.26 0.38
Northwest Africa 4741Achondrite-ung4.99002.64000.045-0.11 0.34 0.4
Northwest Africa 4537Aubrite5.02102.65000.039-0.08 0.35 0.39
Al Huwaysah 010Achondrite-ung4.73002.3100-0.15-0.37 0.01 0.2
Allan Hills A78113Aubrite4.81002.53000.029-0.29 0.23 0.38
Northwest Africa 13432Winonaite4.85502.0160-0.509-0.24 -0.28 -0.16
Northwest Africa 6077Achondrite-ung5.18002.6670-0.0270.08 0.37 0.33
Peña Blanca SpringAubrite5.26702.6390-0.10.17 0.34 0.25
ItqiyEH7-an4.80002.53000.034-0.3 0.23 0.39
Lewis Cliff 87007Aubrite5.09002.68000.033-0.01 0.38 0.39
Peña Blanca SpringAubrite5.06002.68000.049-0.04 0.38 0.4
Northwest Africa 5400Achondrite-ung5.06102.68100.049-0.04 0.38 0.4
Northwest Africa 11807Winonaite5.48702.3600-0.4930.39 0.06 -0.14
Elephant Moraine 83322EH35.17602.6850-0.0070.08 0.39 0.35
Northwest Africa 2904Eucrite-pmict4.74002.1300-0.335-0.36 -0.17 0.02
Elephant Moraine 90033Aubrite5.18002.6900-0.0040.08 0.39 0.35
Northwest Africa 7904Brachinite5.16602.69400.0080.07 0.39 0.36
Northwest Africa 5548Achondrite-ung5.00002.69000.09-0.1 0.39 0.44
Northwest Africa 8059LL3.054.70202.2280-0.217-0.4 -0.07 0.13
Allan Hills A78113Aubrite5.27002.6700-0.070.17 0.37 0.28
Northwest Africa 10423Eucrite-cm4.69002.2300-0.209-0.41 -0.07 0.14
Queen Alexandra Range 94204EH74.71302.45300.002-0.39 0.15 0.35
QingzhenEH34.70002.4200-0.024-0.4 0.12 0.33
Ramlat Fasad 531Winonaite5.50602.4000-0.4630.41 0.1 -0.11
Northwest Africa 5548Achondrite-ung5.08002.72000.078-0.02 0.42 0.43
Northwest Africa 8059LL3.055.27702.6880-0.0560.18 0.39 0.3
Peña Blanca SpringAubrite5.19002.72500.0260.09 0.43 0.38
LaPaz Icefield 03719Aubrite-an5.16002.73200.0490.06 0.43 0.4
Northwest Africa 10497Brachinite4.67002.2200-0.208-0.43 -0.08 0.14
Northwest Africa 8173Enst achon5.26502.7080-0.030.17 0.41 0.32
LaPaz Icefield 02233Aubrite5.16002.74000.0570.06 0.44 0.41
Allan Hills A78113Aubrite5.11702.75100.090.02 0.45 0.44
Northwest Africa 1617Acapulcoite5.06001.8500-0.781-0.04 -0.45 -0.43
Northwest Africa 6152Brachinite4.65002.2400-0.178-0.45 -0.06 0.17
Northwest Africa 6152Brachinite4.65002.2300-0.188-0.45 -0.07 0.16
Northwest Africa 5400Achondrite-ung5.22302.74100.0250.12 0.44 0.38
Northwest Africa 8124LL34.71802.56800.115-0.38 0.27 0.47
Cumberland FallsAubrite5.18002.76000.0660.08 0.46 0.42
Ooldea 014Achondrite-prim-ung5.04501.8280-0.795-0.05 -0.47 -0.44
Pecora Escarpment 91020EL35.27002.74400.0040.17 0.44 0.36
Northwest Africa 11807Winonaite5.56702.3950-0.50.47 0.1 -0.15
BishopvilleAubrite5.29002.7400-0.0110.19 0.44 0.34
Northwest Africa 13735Winonaite4.74201.9740-0.492-0.36 -0.33 -0.14
Allan Hills A78113Aubrite5.22002.77000.0560.12 0.47 0.41
Northwest Africa 12543Winonaite5.58302.3450-0.5580.48 0.05 -0.21
Lewis Cliff 88180EH55.29502.7460-0.0070.2 0.45 0.34
Khor TemikiAubrite5.28702.75200.0030.19 0.45 0.35
Northwest Africa 12951Winonaite4.73001.9690-0.491-0.37 -0.33 -0.14
Tanezrouft 031EL55.25902.77100.0360.16 0.47 0.39
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