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Oxygen isotope composition of main-group pallasites and mesosiderites. Data for main-group pallasites and mesosiderites from Greenwood et al. (2006). Solid lines through data points show the mean Δ17O value for each group. Grey-shaded boxes depict the 2σ error on the mesosiderite and main-group pallasite population Δ17O and δ18O mean values. Open squares are individual mesosiderite analyses, open circles individual pallasite analyses. The dashed line labelled (1) is the eucrite fractionation line of Greenwood et al. (2005); the dashed line labelled (2) shows the range of HED values obtained by Weichert et al. (2004). Δ17O is linearized using the format of Miller (2002): Δ17O = 1000 ln (1+ (δ17O/1000)) – λ1000 ln (1+ ( δ18O/1000)) where λ = 0.5247. TFL = Terrestrial Fractionation Line. |
δ18O | δ17O | Δ17O: given | Δ17O: Miller (2002) | Comment |
---|---|---|---|---|
4.3400 | 2.0900 | -0.1870 | -0.187 |
Name | Class | δ18O | δ17O | Δ17O: calc | Δ δ18O | Δ δ17O | Δ Δ17O |
---|---|---|---|---|---|---|---|
Ramlat as Sahmah 309 | Brachinite | 4.3700 | 2.0900 | -0.202 | 0.03 | 0 | -0.02 |
Northwest Africa 4872 | Brachinite | 4.3540 | 2.0610 | -0.223 | 0.01 | -0.03 | -0.04 |
Northwest Africa 4872 | Brachinite | 4.3540 | 2.0610 | -0.223 | 0.01 | -0.03 | -0.04 |
Northwest Africa 8659 | Eucrite | 4.3760 | 2.0830 | -0.212 | 0.04 | -0.01 | -0.03 |
Northwest Africa 4882 | Brachinite | 4.3680 | 2.0640 | -0.227 | 0.03 | -0.03 | -0.04 |
Northwest Africa 4882 | Brachinite | 4.3680 | 2.0640 | -0.227 | 0.03 | -0.03 | -0.04 |
Northwest Africa 4636 | Mesosiderite | 4.3800 | 2.0900 | -0.208 | 0.04 | 0 | -0.02 |
Northwest Africa 7025 | Mesosiderite | 4.3870 | 2.0820 | -0.219 | 0.05 | -0.01 | -0.03 |
Northwest Africa 4395 | Diogenite | 4.3900 | 2.0900 | -0.213 | 0.05 | 0 | -0.03 |
Allan Hills 12073 | Eucrite | 4.4000 | 2.0400 | -0.268 | 0.06 | -0.05 | -0.08 |
Northwest Africa 4872 | Brachinite | 4.3080 | 2.0120 | -0.248 | -0.03 | -0.08 | -0.06 |
Northwest Africa 4872 | Brachinite | 4.3080 | 2.0120 | -0.248 | -0.03 | -0.08 | -0.06 |
El Médano 395 | Brachinite | 4.2900 | 2.0200 | -0.23 | -0.05 | -0.07 | -0.04 |
Northwest Africa 12397 | Mesosiderite | 4.3230 | 1.9920 | -0.276 | -0.02 | -0.1 | -0.09 |
Northwest Africa 4882 | Brachinite | 4.4550 | 2.0950 | -0.242 | 0.12 | 0.01 | -0.06 |
Northwest Africa 4882 | Brachinite | 4.4550 | 2.0950 | -0.242 | 0.12 | 0.01 | -0.06 |
Northwest Africa 12004 | Angrite | 4.2840 | 2.1970 | -0.051 | -0.06 | 0.11 | 0.14 |
Northwest Africa 6474 | Brachinite | 4.2340 | 2.1810 | -0.04 | -0.11 | 0.09 | 0.15 |
Jiddat al Harasis 395 | Diogenite | 4.2300 | 1.9900 | -0.229 | -0.11 | -0.1 | -0.04 |
Northwest Africa 5363 | Achondrite-ung | 4.1830 | 2.1520 | -0.043 | -0.16 | 0.06 | 0.14 |
Thiel Mountains 07009 | EL6 | 4.2100 | 2.2100 | 0.001 | -0.13 | 0.12 | 0.19 |
Northwest Africa 2999 | Angrite | 4.1540 | 2.0950 | -0.084 | -0.19 | 0.01 | 0.1 |
Pecora Escarpment 91461 | EH3 | 4.5270 | 2.0570 | -0.317 | 0.19 | -0.03 | -0.13 |
Allan Hills 84206 | EH3 | 4.4230 | 2.2630 | -0.057 | 0.08 | 0.17 | 0.13 |
Northwest Africa 4418 | Mesosiderite | 4.5240 | 2.1450 | -0.228 | 0.18 | 0.06 | -0.04 |
Northwest Africa 12320 | Angrite | 4.4160 | 2.2680 | -0.049 | 0.08 | 0.18 | 0.14 |
Northwest Africa 12004 | Angrite | 4.4400 | 2.2580 | -0.071 | 0.1 | 0.17 | 0.12 |
Northwest Africa 12320 | Angrite | 4.4070 | 2.2810 | -0.031 | 0.07 | 0.19 | 0.16 |
Northwest Africa 12338 | Achondrite-ung | 4.1600 | 1.9800 | -0.202 | -0.18 | -0.11 | -0.02 |
Northwest Africa 6690 | Diogenite | 4.1900 | 1.9400 | -0.258 | -0.15 | -0.15 | -0.07 |
Acfer 287 | E4 | 4.1610 | 1.9760 | -0.207 | -0.18 | -0.11 | -0.02 |
Northwest Africa 10424 | Eucrite-cm | 4.1800 | 1.9500 | -0.243 | -0.16 | -0.14 | -0.06 |
Northwest Africa 3213 | Mesosiderite | 4.5500 | 2.1300 | -0.257 | 0.21 | 0.04 | -0.07 |
Northwest Africa 12004 | Angrite | 4.4310 | 2.2850 | -0.04 | 0.09 | 0.2 | 0.15 |
Northwest Africa 7025 | Mesosiderite | 4.1490 | 1.9610 | -0.215 | -0.19 | -0.13 | -0.03 |
Northwest Africa 2999 | Angrite | 4.0930 | 2.0540 | -0.093 | -0.25 | -0.04 | 0.09 |
Northwest Africa 2904 | Eucrite-pmict | 4.5800 | 2.1600 | -0.242 | 0.24 | 0.07 | -0.06 |
El Médano 395 | Brachinite | 4.5820 | 2.1700 | -0.233 | 0.24 | 0.08 | -0.05 |
Northwest Africa 11264 | Eucrite | 4.1300 | 1.9300 | -0.236 | -0.21 | -0.16 | -0.05 |
Northwest Africa 13355 | Eucrite-an | 4.1570 | 1.8950 | -0.286 | -0.18 | -0.2 | -0.1 |
Northwest Africa 7812 | Angrite | 4.0680 | 2.0510 | -0.083 | -0.27 | -0.04 | 0.1 |
Northwest Africa 13921 | Achondrite-ung | 4.0920 | 1.9630 | -0.184 | -0.25 | -0.13 | 0 |
Northwest Africa 12540 | Eucrite-an | 4.1200 | 1.9090 | -0.252 | -0.22 | -0.18 | -0.07 |
Northwest Africa 11917 | Winonaite | 4.5410 | 1.8760 | -0.505 | 0.2 | -0.21 | -0.32 |
Jiddat al Harasis 845 | Mesosiderite-C2 | 4.0770 | 1.9380 | -0.201 | -0.26 | -0.15 | -0.01 |
Northwest Africa 13457 | Eucrite | 4.1250 | 1.8750 | -0.289 | -0.22 | -0.22 | -0.1 |
Ramlat as Sahmah 511 | Eucrite | 4.0800 | 1.9200 | -0.22 | -0.26 | -0.17 | -0.03 |
Northwest Africa 5400 | Achondrite-ung | 4.4860 | 2.3670 | 0.013 | 0.15 | 0.28 | 0.2 |
Northwest Africa 13355 | Eucrite-an | 4.1050 | 1.8710 | -0.282 | -0.23 | -0.22 | -0.1 |
Northwest Africa 12320 | Angrite | 4.5450 | 2.3390 | -0.045 | 0.21 | 0.25 | 0.14 |
Northwest Africa 4937 | Winonaite | 4.3700 | 1.7630 | -0.529 | 0.03 | -0.33 | -0.34 |
Elephant Moraine 90757 | Aubrite | 4.5910 | 2.3050 | -0.103 | 0.25 | 0.22 | 0.08 |
Cumberland Falls | Aubrite | 4.5400 | 2.3600 | -0.022 | 0.2 | 0.27 | 0.16 |
Jiddat al Harasis 845 | Mesosiderite-C2 | 4.0450 | 1.9290 | -0.193 | -0.3 | -0.16 | -0.01 |
Northwest Africa 6152 | Brachinite | 4.6500 | 2.2300 | -0.209 | 0.31 | 0.14 | -0.02 |
Northwest Africa 739 | CH3 | 4.3200 | 1.7500 | -0.516 | -0.02 | -0.34 | -0.33 |
Northwest Africa 2177 | Eucrite | 4.0600 | 1.8900 | -0.24 | -0.28 | -0.2 | -0.05 |
Northwest Africa 6152 | Brachinite | 4.6500 | 2.2400 | -0.199 | 0.31 | 0.15 | -0.01 |
Northwest Africa 7812 | Angrite | 4.0030 | 2.0000 | -0.1 | -0.34 | -0.09 | 0.09 |
Tindouf 005 | Eucrite-pmict | 4.0500 | 1.8900 | -0.235 | -0.29 | -0.2 | -0.05 |
Northwest Africa 4908 | Eucrite | 4.0250 | 1.9310 | -0.181 | -0.32 | -0.16 | 0.01 |
Northwest Africa 10497 | Brachinite | 4.6700 | 2.2200 | -0.229 | 0.33 | 0.13 | -0.04 |
Parsa | EH3 | 4.5500 | 2.3800 | -0.007 | 0.21 | 0.29 | 0.18 |
Northwest Africa 7835 | Achondrite-ung | 4.0440 | 2.3090 | 0.187 | -0.3 | 0.22 | 0.37 |
Northwest Africa 5990 | Martian (shergottite) | 4.1500 | 2.4100 | 0.232 | -0.19 | 0.32 | 0.42 |
Hutchison Icefield 18034 | Aubrite | 4.5310 | 2.4140 | 0.037 | 0.19 | 0.32 | 0.22 |
Northwest Africa 4937 | Winonaite | 4.2060 | 1.7380 | -0.468 | -0.13 | -0.35 | -0.28 |
Northwest Africa 10423 | Eucrite-cm | 4.6900 | 2.2300 | -0.23 | 0.35 | 0.14 | -0.04 |
Northwest Africa 13921 | Achondrite-ung | 4.0120 | 1.9000 | -0.205 | -0.33 | -0.19 | -0.02 |
Jiddat al Harasis 556 | Howardite | 4.0200 | 1.8800 | -0.229 | -0.32 | -0.21 | -0.04 |
Northwest Africa 10603 | Eucrite-melt breccia | 4.0300 | 1.8650 | -0.249 | -0.31 | -0.23 | -0.06 |
Northwest Africa 12543 | Winonaite | 4.6620 | 1.8800 | -0.565 | 0.32 | -0.21 | -0.38 |
Northwest Africa 8059 | LL3.05 | 4.7020 | 2.2280 | -0.238 | 0.36 | 0.14 | -0.05 |
Northwest Africa 6292 | Achondrite-ung | 4.5500 | 2.4200 | 0.033 | 0.21 | 0.33 | 0.22 |
Northwest Africa 10639 | Eucrite-mmict | 4.0100 | 1.8700 | -0.234 | -0.33 | -0.22 | -0.05 |
Northwest Africa 5990 | Martian (shergottite) | 4.2100 | 2.4700 | 0.261 | -0.13 | 0.38 | 0.45 |
Northwest Africa 2904 | Eucrite-pmict | 4.7400 | 2.1300 | -0.356 | 0.4 | 0.04 | -0.17 |
Northwest Africa 8159 | Martian (augite basalt) | 4.0890 | 2.4060 | 0.26 | -0.25 | 0.32 | 0.45 |
Northwest Africa 8173 | Enst achon | 4.6000 | 2.4000 | -0.013 | 0.26 | 0.31 | 0.17 |
Northwest Africa 12951 | Winonaite | 4.7300 | 1.9690 | -0.511 | 0.39 | -0.12 | -0.32 |
Acfer 366 | CH3 | 4.6100 | 1.7810 | -0.636 | 0.27 | -0.31 | -0.45 |
Northwest Africa 10416 | Martian | 4.3100 | 2.5000 | 0.238 | -0.03 | 0.41 | 0.42 |
Northwest Africa 7035 | Eucrite-mmict | 3.9930 | 1.8670 | -0.228 | -0.35 | -0.22 | -0.04 |
Northwest Africa 5718 | Martian (shergottite) | 4.2900 | 2.5000 | 0.249 | -0.05 | 0.41 | 0.44 |
Yamato 000027 | Martian (shergottite) | 4.1290 | 2.4460 | 0.279 | -0.21 | 0.36 | 0.47 |
Yamato 000097 | Martian (shergottite) | 4.1780 | 2.4710 | 0.278 | -0.16 | 0.38 | 0.46 |
Northwest Africa 4051 | Eucrite | 3.9940 | 1.8610 | -0.234 | -0.35 | -0.23 | -0.05 |
Northwest Africa 12689 | Eucrite-br | 3.9970 | 1.8550 | -0.242 | -0.34 | -0.24 | -0.06 |
Dar al Gani 1060 | Eucrite | 4.0000 | 1.8500 | -0.248 | -0.34 | -0.24 | -0.06 |
Northwest Africa 13735 | Winonaite | 4.7420 | 1.9740 | -0.513 | 0.4 | -0.12 | -0.33 |
Pecora Escarpment 01021 | Eucrite-mmict | 3.9810 | 1.8730 | -0.215 | -0.36 | -0.22 | -0.03 |
Sayh al Uhaymir 094 | Martian (shergottite) | 4.2900 | 2.5100 | 0.259 | -0.05 | 0.42 | 0.45 |
Yamato 000047 | Martian (shergottite) | 4.1780 | 2.4810 | 0.288 | -0.16 | 0.39 | 0.47 |
Northwest Africa 7025 | Mesosiderite | 3.9920 | 1.8470 | -0.247 | -0.35 | -0.24 | -0.06 |
Northwest Africa 8686 | Martian (shergottite) | 4.4170 | 2.5110 | 0.193 | 0.08 | 0.42 | 0.38 |
Queen Alexandra Range 94594 | EL3 | 4.5640 | 2.4570 | 0.062 | 0.22 | 0.37 | 0.25 |
Northwest Africa 8694 | Martian (Chassignite) | 4.1800 | 2.4900 | 0.296 | -0.16 | 0.4 | 0.48 |
Yamato 980459 | Martian (shergottite) | 4.3100 | 2.5200 | 0.258 | -0.03 | 0.43 | 0.44 |
Yamato 980459 | Martian (shergottite) | 4.3100 | 2.5200 | 0.258 | -0.03 | 0.43 | 0.44 |
Northwest Africa 6342 | Martian (shergottite) | 4.0800 | 2.4400 | 0.299 | -0.26 | 0.35 | 0.49 |
Northwest Africa 6963 | Martian (shergottite) | 4.3320 | 2.5280 | 0.255 | -0.01 | 0.44 | 0.44 |
Northwest Africa 7635 | Martian (shergottite) | 4.2170 | 2.5130 | 0.3 | -0.12 | 0.42 | 0.49 |
Ramlat Fasad 533 | Martian (Shergottite) | 4.2430 | 2.5200 | 0.293 | -0.1 | 0.43 | 0.48 |
Northwest Africa 8535 | Angrite | 3.9250 | 1.9340 | -0.125 | -0.42 | -0.16 | 0.06 |
Northwest Africa 8123 | H(L)3.1 | 3.9420 | 2.2890 | 0.22 | -0.4 | 0.2 | 0.41 |
Northwest Africa 2737 | Martian (chassignite) | 4.0200 | 2.4000 | 0.29 | -0.32 | 0.31 | 0.48 |
Dhofar 378 | Martian (shergottite) | 4.4600 | 2.5200 | 0.18 | 0.12 | 0.43 | 0.37 |
Northwest Africa 7635 | Martian (shergottite) | 4.2200 | 2.5210 | 0.306 | -0.12 | 0.43 | 0.49 |
Al Huwaysah 010 | Achondrite-ung | 4.7300 | 2.3100 | -0.171 | 0.39 | 0.22 | 0.02 |
Dhofar 1480 | Eucrite-pmict | 3.9630 | 1.8480 | -0.231 | -0.38 | -0.24 | -0.04 |
Northwest Africa 8656 | Martian (shergottite) | 4.2760 | 2.5340 | 0.29 | -0.06 | 0.44 | 0.48 |
Northwest Africa 6162 | Martian (shergottite) | 3.9800 | 2.3600 | 0.271 | -0.36 | 0.27 | 0.46 |
Northwest Africa 10319 | Eucrite-cm | 3.9600 | 1.8400 | -0.237 | -0.38 | -0.25 | -0.05 |
Northwest Africa 7635 | Martian (shergottite) | 4.2410 | 2.5360 | 0.31 | -0.1 | 0.45 | 0.5 |
Northwest Africa 7904 | Brachinite | 4.7810 | 2.2100 | -0.297 | 0.44 | 0.12 | -0.11 |
Northwest Africa 8159 | Martian (augite basalt) | 4.1970 | 2.5320 | 0.329 | -0.14 | 0.44 | 0.52 |
Jiddat al Harasis 404 | Eucrite | 3.9400 | 1.8500 | -0.217 | -0.4 | -0.24 | -0.03 |
El Hassan Ould Hamed 001 | Eucrite-unbr | 3.9630 | 1.8120 | -0.267 | -0.38 | -0.28 | -0.08 |
Northwest Africa 1670 | Angrite | 3.8870 | 1.9670 | -0.072 | -0.45 | -0.12 | 0.11 |
Northwest Africa 6342 | Martian (shergottite) | 3.9700 | 2.3800 | 0.296 | -0.37 | 0.29 | 0.48 |
Northwest Africa 8656 | Martian (shergottite) | 4.0750 | 2.4800 | 0.341 | -0.27 | 0.39 | 0.53 |
Northwest Africa 10019 | Pallasite, ungrouped | 3.9350 | 1.8460 | -0.218 | -0.41 | -0.24 | -0.03 |
Northwest Africa 8649 | LL3.05 | 4.2030 | 2.5430 | 0.337 | -0.14 | 0.45 | 0.52 |
Northwest Africa 6474 | Brachinite | 3.8790 | 1.9800 | -0.055 | -0.46 | -0.11 | 0.13 |
Northwest Africa 4590 | Angrite | 3.8810 | 1.9670 | -0.069 | -0.46 | -0.12 | 0.12 |
Northwest Africa 8661 | Eucrite | 3.9140 | 1.8680 | -0.185 | -0.43 | -0.22 | 0 |
Northwest Africa 12522 | Martian (shergottite) | 4.4260 | 2.5670 | 0.244 | 0.09 | 0.48 | 0.43 |
Northwest Africa 13921 | Achondrite-ung | 3.9050 | 1.8750 | -0.174 | -0.44 | -0.22 | 0.01 |
Northwest Africa 11486 | Eucrite | 3.9300 | 1.8300 | -0.232 | -0.41 | -0.26 | -0.05 |
Northwest Africa 10416 | Martian | 4.3920 | 2.5730 | 0.268 | 0.05 | 0.48 | 0.45 |
Northwest Africa 13921 | Achondrite-ung | 3.9130 | 1.8560 | -0.197 | -0.43 | -0.23 | -0.01 |
Northwest Africa 10593 | Martian (shergottite) | 4.3730 | 2.5760 | 0.281 | 0.03 | 0.49 | 0.47 |
Qingzhen | EH3 | 4.7000 | 2.4200 | -0.046 | 0.36 | 0.33 | 0.14 |
Al Hawaya 004 | Eucrite-pmict | 3.9300 | 1.8200 | -0.242 | -0.41 | -0.27 | -0.06 |
Northwest Africa 7032 | Martian (shergottite) | 4.4230 | 2.5770 | 0.256 | 0.08 | 0.49 | 0.44 |
Northwest Africa 7812 | Angrite | 3.8640 | 1.9570 | -0.07 | -0.48 | -0.13 | 0.12 |
El Hassan Ould Hamed 001 | Eucrite-unbr | 3.9440 | 1.7890 | -0.28 | -0.4 | -0.3 | -0.09 |
Northwest Africa 6484 | Lodranite | 4.5420 | 1.6350 | -0.746 | 0.2 | -0.46 | -0.56 |
Al Bir Lahlou 001 | Achondrite-ung | 3.9390 | 1.7920 | -0.274 | -0.4 | -0.3 | -0.09 |