![]() |
||
|
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). |
δ18O | δ17O | Δ17O: given | Δ17O: linear | Comment |
---|---|---|---|---|
4.2900 | 2.0200 | -0.2450 | -0.211 | |
4.5820 | 2.1700 | -0.2500 | -0.213 | |
4.8970 | 2.3290 | -0.2560 | -0.217 |
Name | Class | δ18O | δ17O | Δ17O: calc | Δ δ18O | Δ δ17O | Δ Δ17O |
---|---|---|---|---|---|---|---|
El Médano 395 | Brachinite | 4.5820 | 2.1700 | -0.213 | -0.01 | -0 | 0 |
Northwest Africa 2904 | Eucrite-pmict | 4.5800 | 2.1600 | -0.222 | -0.01 | -0.01 | -0.01 |
Northwest Africa 14717 | Eucrite-unbr | 4.5710 | 2.1460 | -0.231 | -0.02 | -0.03 | -0.02 |
Northwest Africa 3213 | Mesosiderite | 4.5500 | 2.1300 | -0.236 | -0.04 | -0.04 | -0.02 |
Northwest Africa 4418 | Mesosiderite | 4.5240 | 2.1450 | -0.207 | -0.07 | -0.03 | 0.01 |
Northwest Africa 6152 | Brachinite | 4.6500 | 2.2300 | -0.188 | 0.06 | 0.06 | 0.03 |
Northwest Africa 6152 | Brachinite | 4.6500 | 2.2400 | -0.178 | 0.06 | 0.07 | 0.04 |
Northwest Africa 10497 | Brachinite | 4.6700 | 2.2200 | -0.208 | 0.08 | 0.05 | 0.01 |
Northwest Africa 10423 | Eucrite-cm | 4.6900 | 2.2300 | -0.209 | 0.1 | 0.06 | 0 |
Northwest Africa 8059 | LL3.05 | 4.7020 | 2.2280 | -0.217 | 0.11 | 0.06 | -0 |
Northwest Africa 15317 | Angrite | 4.5290 | 2.2830 | -0.072 | -0.06 | 0.11 | 0.14 |
Pecora Escarpment 91461 | EH3 | 4.5270 | 2.0570 | -0.297 | -0.06 | -0.12 | -0.08 |
Elephant Moraine 90757 | Aubrite | 4.5910 | 2.3050 | -0.082 | 0 | 0.13 | 0.13 |
Northwest Africa 4882 | Brachinite | 4.4550 | 2.0950 | -0.222 | -0.13 | -0.08 | -0.01 |
Northwest Africa 4882 | Brachinite | 4.4550 | 2.0950 | -0.222 | -0.13 | -0.08 | -0.01 |
Northwest Africa 2904 | Eucrite-pmict | 4.7400 | 2.1300 | -0.335 | 0.15 | -0.04 | -0.12 |
Northwest Africa 12320 | Angrite | 4.5450 | 2.3390 | -0.024 | -0.04 | 0.17 | 0.19 |
Northwest Africa 12004 | Angrite | 4.4400 | 2.2580 | -0.051 | -0.15 | 0.09 | 0.16 |
Allan Hills 84206 | EH3 | 4.4230 | 2.2630 | -0.037 | -0.17 | 0.09 | 0.18 |
Cumberland Falls | Aubrite | 4.5400 | 2.3600 | -0.001 | -0.05 | 0.19 | 0.21 |
Northwest Africa 12004 | Angrite | 4.4310 | 2.2850 | -0.019 | -0.16 | 0.11 | 0.19 |
Northwest Africa 7904 | Brachinite | 4.7810 | 2.2100 | -0.276 | 0.19 | 0.04 | -0.06 |
Al Huwaysah 010 | Achondrite-ung | 4.7300 | 2.3100 | -0.15 | 0.14 | 0.14 | 0.06 |
Northwest Africa 12320 | Angrite | 4.4160 | 2.2680 | -0.028 | -0.17 | 0.09 | 0.19 |
Northwest Africa 14717 | Eucrite-unbr | 4.4180 | 2.0530 | -0.244 | -0.17 | -0.12 | -0.03 |
Parsa | EH3 | 4.5500 | 2.3800 | 0.014 | -0.04 | 0.21 | 0.23 |
Northwest Africa 12320 | Angrite | 4.4070 | 2.2810 | -0.011 | -0.18 | 0.11 | 0.2 |
Northwest Africa 4395 | Diogenite | 4.3900 | 2.0900 | -0.193 | -0.2 | -0.08 | 0.02 |
Northwest Africa 5400 | Achondrite-ung | 4.4860 | 2.3670 | 0.034 | -0.1 | 0.19 | 0.25 |
Northwest Africa 7025 | Mesosiderite | 4.3870 | 2.0820 | -0.199 | -0.2 | -0.09 | 0.01 |
Northwest Africa 4636 | Mesosiderite | 4.3800 | 2.0900 | -0.188 | -0.21 | -0.08 | 0.03 |
Northwest Africa 8173 | Enst achon | 4.6000 | 2.4000 | 0.008 | 0.01 | 0.23 | 0.22 |
Northwest Africa 15317 | Angrite | 4.7340 | 2.3530 | -0.109 | 0.14 | 0.18 | 0.1 |
Allan Hills 12073 | Eucrite | 4.4000 | 2.0400 | -0.248 | -0.19 | -0.13 | -0.03 |
Northwest Africa 8659 | Eucrite | 4.3760 | 2.0830 | -0.193 | -0.21 | -0.09 | 0.02 |
Ramlat as Sahmah 309 | Brachinite | 4.3700 | 2.0900 | -0.182 | -0.22 | -0.08 | 0.03 |
Northwest Africa 4882 | Brachinite | 4.3680 | 2.0640 | -0.207 | -0.22 | -0.11 | 0.01 |
Northwest Africa 4882 | Brachinite | 4.3680 | 2.0640 | -0.207 | -0.22 | -0.11 | 0.01 |
Northwest Africa 12951 | Winonaite | 4.7300 | 1.9690 | -0.491 | 0.14 | -0.2 | -0.28 |
Hutchison Icefield 18034 | Aubrite | 4.5310 | 2.4140 | 0.058 | -0.06 | 0.24 | 0.27 |
Northwest Africa 6292 | Achondrite-ung | 4.5500 | 2.4200 | 0.054 | -0.04 | 0.25 | 0.27 |
Northwest Africa 13735 | Winonaite | 4.7420 | 1.9740 | -0.492 | 0.15 | -0.2 | -0.28 |
Northwest Africa 4872 | Brachinite | 4.3540 | 2.0610 | -0.203 | -0.24 | -0.11 | 0.01 |
Northwest Africa 4872 | Brachinite | 4.3540 | 2.0610 | -0.203 | -0.24 | -0.11 | 0.01 |
Los Vientos 263 | Pallasite, ungrouped | 4.3400 | 2.0900 | -0.167 | -0.25 | -0.08 | 0.05 |
Northwest Africa 6023 | Brachinite-an | 4.8380 | 2.2690 | -0.247 | 0.25 | 0.1 | -0.03 |
Qingzhen | EH3 | 4.7000 | 2.4200 | -0.024 | 0.11 | 0.25 | 0.19 |
Zag (b) | Winonaite | 4.8400 | 2.0600 | -0.457 | 0.25 | -0.11 | -0.24 |
Queen Alexandra Range 94594 | EL3 | 4.5640 | 2.4570 | 0.084 | -0.03 | 0.28 | 0.3 |
Northwest Africa 11917 | Winonaite | 4.5410 | 1.8760 | -0.485 | -0.05 | -0.3 | -0.27 |
Northwest Africa 12543 | Winonaite | 4.6620 | 1.8800 | -0.544 | 0.07 | -0.29 | -0.33 |
Northwest Africa 7605 | Brachinite | 4.8220 | 2.3700 | -0.137 | 0.23 | 0.2 | 0.08 |
Queen Alexandra Range 94204 | EH7 | 4.7130 | 2.4530 | 0.002 | 0.12 | 0.28 | 0.22 |
Northwest Africa 12004 | Angrite | 4.2840 | 2.1970 | -0.031 | -0.31 | 0.02 | 0.18 |
Northwest Africa 14988 | Winonaite | 4.8560 | 2.0210 | -0.504 | 0.27 | -0.15 | -0.29 |
Northwest Africa 13432 | Winonaite | 4.8550 | 2.0160 | -0.509 | 0.27 | -0.16 | -0.29 |
Northwest Africa 10637 | Brachinite | 4.7940 | 2.4050 | -0.088 | 0.2 | 0.23 | 0.13 |
Old Homestead 003 | Howardite | 4.8800 | 2.3000 | -0.238 | 0.29 | 0.13 | -0.02 |
Northwest Africa 12951 | Winonaite | 4.8870 | 2.0490 | -0.492 | 0.3 | -0.12 | -0.28 |
Northwest Africa 12397 | Mesosiderite | 4.3230 | 1.9920 | -0.256 | -0.27 | -0.18 | -0.04 |
Northwest Africa 4872 | Brachinite | 4.3080 | 2.0120 | -0.228 | -0.28 | -0.16 | -0.01 |
Northwest Africa 4872 | Brachinite | 4.3080 | 2.0120 | -0.228 | -0.28 | -0.16 | -0.01 |
El Médano 395 | Brachinite | 4.2900 | 2.0200 | -0.211 | -0.3 | -0.15 | 0 |
El Médano 395 | Brachinite | 4.8970 | 2.3290 | -0.217 | 0.31 | 0.16 | -0 |
Pesyanoe | Aubrite | 4.7890 | 2.4570 | -0.033 | 0.2 | 0.28 | 0.18 |
Northwest Africa 15317 | Angrite | 4.8020 | 2.4570 | -0.04 | 0.21 | 0.28 | 0.17 |
Northwest Africa 6474 | Brachinite | 4.2340 | 2.1810 | -0.021 | -0.36 | 0.01 | 0.19 |
Northwest Africa 12532 | Brachinite | 4.9080 | 2.3450 | -0.207 | 0.32 | 0.17 | 0.01 |
Northwest Africa 3151 | Brachinite | 4.8600 | 2.4200 | -0.107 | 0.27 | 0.25 | 0.11 |
Northwest Africa 11729 | Eucrite-an | 4.9340 | 2.3010 | -0.265 | 0.34 | 0.13 | -0.05 |
Dhofar 378 | Martian (shergottite) | 4.4600 | 2.5200 | 0.201 | -0.13 | 0.35 | 0.41 |
Yamato 691 | EH3 | 4.8300 | 2.4600 | -0.052 | 0.24 | 0.29 | 0.16 |
Northwest Africa 8686 | Martian (shergottite) | 4.4170 | 2.5110 | 0.214 | -0.17 | 0.34 | 0.43 |
Thiel Mountains 07009 | EL6 | 4.2100 | 2.2100 | 0.021 | -0.38 | 0.04 | 0.23 |
Northwest Africa 13917 | Winonaite | 4.9590 | 2.0550 | -0.524 | 0.37 | -0.12 | -0.31 |
Northwest Africa 14988 | Winonaite | 4.9590 | 2.0440 | -0.535 | 0.37 | -0.13 | -0.32 |
Acfer 366 | CH3 | 4.6100 | 1.7810 | -0.616 | 0.02 | -0.39 | -0.4 |
Allan Hills 88046 | EH3 | 4.9050 | 2.4200 | -0.131 | 0.32 | 0.25 | 0.08 |
Northwest Africa 10602 | Eucrite-melt breccia | 4.9520 | 2.3490 | -0.226 | 0.36 | 0.18 | -0.01 |
Jiddat al Harasis 395 | Diogenite | 4.2300 | 1.9900 | -0.21 | -0.36 | -0.18 | 0 |
Northwest Africa 5363 | Achondrite-ung | 4.1830 | 2.1520 | -0.023 | -0.41 | -0.02 | 0.19 |
Bustee | Aubrite | 4.8300 | 2.5100 | -0.002 | 0.24 | 0.34 | 0.21 |
Itqiy | EH7-an | 4.8000 | 2.5300 | 0.034 | 0.21 | 0.36 | 0.25 |
Northwest Africa 8124 | LL3 | 4.7180 | 2.5680 | 0.115 | 0.13 | 0.4 | 0.33 |
Allan Hills A78113 | Aubrite | 4.8100 | 2.5300 | 0.029 | 0.22 | 0.36 | 0.24 |
Northwest Africa 10593 | Martian (shergottite) | 4.4840 | 2.5820 | 0.25 | -0.11 | 0.41 | 0.46 |
Northwest Africa 12522 | Martian (shergottite) | 4.4260 | 2.5670 | 0.265 | -0.16 | 0.39 | 0.48 |
Northwest Africa 10416 | Martian | 4.3100 | 2.5000 | 0.259 | -0.28 | 0.33 | 0.47 |
Northwest Africa 2986 | Martian (shergottite) | 4.4500 | 2.5800 | 0.266 | -0.14 | 0.41 | 0.48 |
Northwest Africa 7032 | Martian (shergottite) | 4.4230 | 2.5770 | 0.277 | -0.17 | 0.4 | 0.49 |
Northwest Africa 6963 | Martian (shergottite) | 4.3320 | 2.5280 | 0.275 | -0.26 | 0.36 | 0.49 |
Northwest Africa 10153 | Martian (nakhlite) | 4.4460 | 2.5910 | 0.279 | -0.14 | 0.42 | 0.49 |
Northwest Africa 2999 | Angrite | 4.1540 | 2.0950 | -0.065 | -0.44 | -0.08 | 0.15 |
Northwest Africa 5718 | Martian (shergottite) | 4.4700 | 2.6000 | 0.276 | -0.12 | 0.43 | 0.49 |
Northwest Africa 5718 | Martian (shergottite) | 4.2900 | 2.5000 | 0.269 | -0.3 | 0.33 | 0.48 |
Yamato 980459 | Martian (shergottite) | 4.3100 | 2.5200 | 0.279 | -0.28 | 0.35 | 0.49 |
Yamato 980459 | Martian (shergottite) | 4.3100 | 2.5200 | 0.279 | -0.28 | 0.35 | 0.49 |
Northwest Africa 10416 | Martian | 4.3920 | 2.5730 | 0.289 | -0.2 | 0.4 | 0.5 |
Northwest Africa 12951 | Winonaite | 5.0350 | 2.1190 | -0.499 | 0.45 | -0.05 | -0.29 |
Sayh al Uhaymir 094 | Martian (shergottite) | 4.2900 | 2.5100 | 0.279 | -0.3 | 0.34 | 0.49 |
Northwest Africa 5400 | Achondrite-ung | 4.8800 | 2.5250 | -0.013 | 0.29 | 0.35 | 0.2 |
Northwest Africa 10593 | Martian (shergottite) | 4.3730 | 2.5760 | 0.302 | -0.22 | 0.4 | 0.52 |
Northwest Africa 6690 | Diogenite | 4.1900 | 1.9400 | -0.239 | -0.4 | -0.23 | -0.03 |
Northwest Africa 12241 | Martian (shergottite) | 4.6200 | 2.6350 | 0.233 | 0.03 | 0.46 | 0.45 |
Northwest Africa 4937 | Winonaite | 4.3700 | 1.7630 | -0.509 | -0.22 | -0.41 | -0.3 |
Northwest Africa 10416 | Martian | 4.5000 | 2.6300 | 0.29 | -0.09 | 0.46 | 0.5 |
Northwest Africa 10424 | Eucrite-cm | 4.1800 | 1.9500 | -0.224 | -0.41 | -0.22 | -0.01 |
Northwest Africa 8649 | LL3.05 | 4.4640 | 2.6230 | 0.302 | -0.13 | 0.45 | 0.52 |
Northwest Africa 8679 | Martian (shergottite) | 4.5620 | 2.6420 | 0.27 | -0.03 | 0.47 | 0.48 |
Northwest Africa 12338 | Achondrite-ung | 4.1600 | 1.9800 | -0.183 | -0.43 | -0.19 | 0.03 |
Acfer 287 | E4 | 4.1610 | 1.9760 | -0.188 | -0.43 | -0.2 | 0.03 |
Zakłodzie | Enst achon-ung | 4.8600 | 2.5600 | 0.033 | 0.27 | 0.39 | 0.25 |
Old Homestead 003 | Howardite | 5.0200 | 2.3700 | -0.24 | 0.43 | 0.2 | -0.03 |
Allan Hills 84001 | Martian (OPX) | 4.6000 | 2.6500 | 0.258 | 0.01 | 0.48 | 0.47 |
Northwest Africa 8656 | Martian (shergottite) | 4.2760 | 2.5340 | 0.31 | -0.31 | 0.36 | 0.52 |
Northwest Africa 8656 | Martian (shergottite) | 4.4170 | 2.6230 | 0.326 | -0.17 | 0.45 | 0.54 |
Northwest Africa 5990 | Martian (shergottite) | 4.2100 | 2.4700 | 0.281 | -0.38 | 0.3 | 0.49 |
Northwest Africa 10851 | Winonaite | 5.0780 | 2.1490 | -0.492 | 0.49 | -0.02 | -0.28 |
Northwest Africa 7025 | Mesosiderite | 4.1490 | 1.9610 | -0.196 | -0.44 | -0.21 | 0.02 |
Northwest Africa 2627 | Acapulcoite | 4.9300 | 1.8200 | -0.744 | 0.34 | -0.35 | -0.53 |
Ramlat Fasad 533 | Martian (Shergottite) | 4.2430 | 2.5200 | 0.314 | -0.35 | 0.35 | 0.53 |
Northwest Africa 7944 | Martian (shergottite) | 4.3740 | 2.6150 | 0.341 | -0.22 | 0.44 | 0.55 |
Northwest Africa 10720 | Martian (nakhlite) | 4.5810 | 2.6690 | 0.287 | -0.01 | 0.5 | 0.5 |
Jiddat al Harasis 556 | Howardite | 4.9800 | 2.4800 | -0.11 | 0.39 | 0.31 | 0.1 |
Grapevine Mesa | CBa | 4.9980 | 2.4560 | -0.143 | 0.41 | 0.28 | 0.07 |
Northwest Africa 2986 | Martian (shergottite) | 4.5900 | 2.6700 | 0.283 | 0 | 0.5 | 0.5 |
Northwest Africa 10416 | Martian | 4.5390 | 2.6680 | 0.308 | -0.05 | 0.5 | 0.52 |
Northwest Africa 5990 | Martian (shergottite) | 4.1500 | 2.4100 | 0.252 | -0.44 | 0.24 | 0.47 |