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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). |
δ18O | δ17O | Δ17O: given | Δ17O: linear | Comment |
---|---|---|---|---|
4.8300 | 3.7110 | 1.1710 | 1.199 | |
5.0320 | 3.8180 | 1.1710 | 1.201 |
Name | Class | δ18O | δ17O | Δ17O: calc | Δ δ18O | Δ δ17O | Δ Δ17O |
---|---|---|---|---|---|---|---|
Northwest Africa 7988 | LL6 | 4.9140 | 3.7650 | 1.21 | -0.02 | 0 | 0.01 |
Sayh al Uhaymir 565 | LL3 | 4.9500 | 3.7700 | 1.196 | 0.02 | 0.01 | -0 |
Northwest Africa 8417 | LL7 | 4.9370 | 3.7890 | 1.222 | 0.01 | 0.02 | 0.02 |
Northwest Africa 8684 | L6 | 4.9070 | 3.7380 | 1.186 | -0.02 | -0.03 | -0.01 |
Northwest Africa 8417 | LL7 | 4.8900 | 3.7290 | 1.186 | -0.04 | -0.04 | -0.01 |
Northwest Africa 11575 | Achondrite-ung | 4.8750 | 3.7600 | 1.225 | -0.06 | -0 | 0.02 |
Clarendon (c) | L4 | 4.9500 | 3.7020 | 1.128 | 0.02 | -0.06 | -0.07 |
Northwest Africa 10103 | LL7 | 4.9430 | 3.8340 | 1.264 | 0.01 | 0.07 | 0.06 |
Northwest Africa 11745 | L5 | 4.9310 | 3.6930 | 1.129 | 0 | -0.07 | -0.07 |
Olivenza | LL5 | 5.0000 | 3.7400 | 1.14 | 0.07 | -0.02 | -0.06 |
Sayh al Uhaymir 564 | L3 | 4.9020 | 3.6970 | 1.148 | -0.03 | -0.07 | -0.05 |
Northwest Africa 13856 | Achondrite-ung | 4.9470 | 3.6820 | 1.11 | 0.02 | -0.08 | -0.09 |
Sayh al Uhaymir 565 | LL3 | 4.9410 | 3.6710 | 1.102 | 0.01 | -0.09 | -0.1 |
Northwest Africa 12907 | Achondrite-prim | 4.9500 | 3.6720 | 1.098 | 0.02 | -0.09 | -0.1 |
Atarra | L4 | 4.8800 | 3.6800 | 1.142 | -0.05 | -0.08 | -0.06 |
Qidong | L/LL5 | 4.9500 | 3.6600 | 1.086 | 0.02 | -0.1 | -0.11 |
Vavilovka | LL6 | 4.8300 | 3.7200 | 1.208 | -0.1 | -0.04 | 0.01 |
Northwest Africa 7660 | LL-melt rock | 4.9640 | 3.8740 | 1.293 | 0.03 | 0.11 | 0.09 |
Northwest Africa 12907 | Achondrite-prim | 4.8990 | 3.6520 | 1.105 | -0.03 | -0.11 | -0.1 |
Soko-Banja | LL4 | 4.8500 | 3.8500 | 1.328 | -0.08 | 0.09 | 0.13 |
Northwest Africa 13196 | L6 | 5.0590 | 3.7400 | 1.109 | 0.13 | -0.02 | -0.09 |
Northwest Africa 8417 | LL7 | 5.0200 | 3.8620 | 1.252 | 0.09 | 0.1 | 0.05 |
Northwest Africa 13446 | Achondrite-ung | 4.8870 | 3.6380 | 1.097 | -0.04 | -0.13 | -0.1 |
Knyahinya | L/LL5 | 4.9900 | 3.6400 | 1.045 | 0.06 | -0.12 | -0.16 |
Northwest Africa 6698 | Achondrite-ung | 4.8000 | 3.7200 | 1.224 | -0.13 | -0.04 | 0.02 |
Clarendon (c) | L4 | 4.8270 | 3.6730 | 1.163 | -0.1 | -0.09 | -0.04 |
Appley Bridge | LL6 | 4.9700 | 3.9000 | 1.316 | 0.04 | 0.14 | 0.12 |
Northwest Africa 13446 | Achondrite-ung | 4.9470 | 3.6230 | 1.051 | 0.02 | -0.14 | -0.15 |
Cabezo de Mayo | L/LL6 | 5.0200 | 3.6500 | 1.04 | 0.09 | -0.11 | -0.16 |
Mifflin | L5 | 4.8400 | 3.6500 | 1.133 | -0.09 | -0.11 | -0.07 |
Aba Panu | L3 | 4.9800 | 3.6250 | 1.035 | 0.05 | -0.14 | -0.16 |
Northwest Africa 6426 | LL7 | 4.7800 | 3.7400 | 1.254 | -0.15 | -0.02 | 0.05 |
Northwest Africa 13195 | L6 | 4.8720 | 3.6210 | 1.088 | -0.06 | -0.14 | -0.11 |
Northwest Africa 13194 | L6 | 4.8710 | 3.6190 | 1.086 | -0.06 | -0.15 | -0.11 |
Savtschenskoje | LL4 | 5.0800 | 3.8200 | 1.178 | 0.15 | 0.06 | -0.02 |
Dhurmsala | LL6 | 5.0900 | 3.8000 | 1.153 | 0.16 | 0.04 | -0.05 |
Northwest Africa 13194 | L6 | 5.0890 | 3.7170 | 1.071 | 0.16 | -0.05 | -0.13 |
Northwest Africa 13446 | Achondrite-ung | 4.8590 | 3.6140 | 1.087 | -0.07 | -0.15 | -0.11 |
Northwest Africa 13857 | Achondrite-ung | 5.0950 | 3.7300 | 1.081 | 0.16 | -0.03 | -0.12 |
Northwest Africa 8649 | LL3.05 | 5.0940 | 3.7130 | 1.064 | 0.16 | -0.05 | -0.14 |
Clarendon (c) | L4 | 4.8550 | 3.6110 | 1.086 | -0.08 | -0.15 | -0.11 |
Jelica | LL6 | 4.7600 | 3.7500 | 1.275 | -0.17 | -0.01 | 0.07 |
Northwest Africa 8257 | L3.15 | 4.8400 | 3.6150 | 1.098 | -0.09 | -0.15 | -0.1 |
Aba Panu | L3 | 5.0890 | 3.6840 | 1.038 | 0.16 | -0.08 | -0.16 |
Katol | L6 | 4.8670 | 3.5960 | 1.065 | -0.06 | -0.17 | -0.14 |
Julesburg | L3.6 | 4.9800 | 3.5900 | 1 | 0.05 | -0.17 | -0.2 |
Dongtai | LL6 | 5.0800 | 3.6600 | 1.018 | 0.15 | -0.1 | -0.18 |
Northwest Africa 7556 | L4-6 | 5.0430 | 3.6180 | 0.996 | 0.11 | -0.15 | -0.2 |
Northwest Africa 13193 | L5 | 4.7780 | 3.6590 | 1.174 | -0.15 | -0.11 | -0.03 |
Guidder | LL5 | 4.7700 | 3.6700 | 1.19 | -0.16 | -0.09 | -0.01 |
Farmington | L5 | 4.8000 | 3.6300 | 1.134 | -0.13 | -0.13 | -0.07 |
Ensisheim | LL6 | 4.8000 | 3.9000 | 1.404 | -0.13 | 0.14 | 0.2 |
Northwest Africa 14180 | LL6 | 5.0640 | 3.8990 | 1.266 | 0.13 | 0.13 | 0.07 |
Northwest Africa 13195 | L6 | 4.8190 | 3.6030 | 1.097 | -0.11 | -0.16 | -0.1 |
Ergheo | L5 | 5.0000 | 3.5800 | 0.98 | 0.07 | -0.18 | -0.22 |
Northwest Africa 13193 | L5 | 4.7870 | 3.6250 | 1.136 | -0.14 | -0.14 | -0.06 |
Northwest Africa 6698 | Achondrite-ung | 4.7300 | 3.7500 | 1.29 | -0.2 | -0.01 | 0.09 |
St. Mesmin | LL6 | 5.1300 | 3.8000 | 1.132 | 0.2 | 0.04 | -0.07 |
Northwest Africa 11744 | L5 | 5.1390 | 3.7780 | 1.106 | 0.21 | 0.01 | -0.09 |
Bjurböle | L/LL4 | 4.9000 | 3.5500 | 1.002 | -0.03 | -0.21 | -0.2 |
Saint-Séverin | LL6 | 4.7600 | 3.6300 | 1.155 | -0.17 | -0.13 | -0.05 |
Katol | L6 | 4.9610 | 3.5490 | 0.969 | 0.03 | -0.22 | -0.23 |
Northwest Africa 12379 | Chondrite-ung | 5.1400 | 3.6900 | 1.017 | 0.21 | -0.07 | -0.18 |
Parnallee | LL3.6 | 5.1500 | 3.8200 | 1.142 | 0.22 | 0.06 | -0.06 |
Northwest Africa 6426 | LL7 | 4.7200 | 3.6800 | 1.226 | -0.21 | -0.08 | 0.03 |
Northwest Africa 14270 | Achondrite-ung | 5.1600 | 3.7620 | 1.079 | 0.23 | -0 | -0.12 |
Moorabie | L3.8-an | 5.1100 | 3.6200 | 0.963 | 0.18 | -0.14 | -0.24 |
Mangwendi | LL6 | 4.7500 | 3.9100 | 1.44 | -0.18 | 0.15 | 0.24 |
Aba Panu | L3 | 5.1600 | 3.7240 | 1.041 | 0.23 | -0.04 | -0.16 |
Renchen | L5-6 | 4.7400 | 3.6300 | 1.165 | -0.19 | -0.13 | -0.04 |
Northwest Africa 12386 | L5 | 4.8030 | 3.5680 | 1.07 | -0.13 | -0.2 | -0.13 |
Northwest Africa 12386 | L5 | 4.8250 | 3.5520 | 1.043 | -0.11 | -0.21 | -0.16 |
Jiddat al Harasis 089 | OC | 5.1700 | 3.7800 | 1.092 | 0.24 | 0.02 | -0.11 |
Patuxent Range 91501 | L7 | 4.7000 | 3.7000 | 1.256 | -0.23 | -0.06 | 0.06 |
Northwest Africa 13856 | Achondrite-ung | 5.1720 | 3.7860 | 1.097 | 0.24 | 0.02 | -0.1 |
Northwest Africa 6485 | LL-melt rock | 5.1500 | 3.8700 | 1.192 | 0.22 | 0.11 | -0.01 |
Catalina 001 | L3 | 5.1510 | 3.6550 | 0.976 | 0.22 | -0.11 | -0.22 |
Northwest Africa 7988 | LL6 | 5.1550 | 3.8730 | 1.192 | 0.22 | 0.11 | -0.01 |
Northwest Africa 14270 | Achondrite-ung | 5.1880 | 3.7720 | 1.074 | 0.26 | 0.01 | -0.13 |
Northwest Africa 12386 | L5 | 4.7950 | 3.5430 | 1.05 | -0.14 | -0.22 | -0.15 |
Northwest Africa 13192 | L5 | 5.1780 | 3.8610 | 1.168 | 0.25 | 0.1 | -0.03 |
Sayh al Uhaymir 564 | L3 | 4.7510 | 3.5620 | 1.091 | -0.18 | -0.2 | -0.11 |
Northwest Africa 2979 | L/LL-melt rock | 4.6900 | 3.6400 | 1.201 | -0.24 | -0.12 | 0 |
Northwest Africa 10103 | LL7 | 5.1750 | 3.8850 | 1.194 | 0.24 | 0.12 | -0.01 |
Northwest Africa 11253 | L-melt rock | 5.1920 | 3.8430 | 1.143 | 0.26 | 0.08 | -0.06 |
Northwest Africa 12907 | Achondrite-prim | 5.1950 | 3.8480 | 1.147 | 0.26 | 0.08 | -0.05 |
Yamato 74191 | L3.7 | 5.1100 | 3.5500 | 0.893 | 0.18 | -0.21 | -0.31 |
Khanpur | LL5 | 5.0300 | 4.0300 | 1.414 | 0.1 | 0.27 | 0.21 |
Northwest Africa 8709 | L3-melt breccia | 5.0330 | 3.4820 | 0.865 | 0.1 | -0.28 | -0.34 |
Chervettaz | L5 | 4.6400 | 3.6600 | 1.247 | -0.29 | -0.1 | 0.05 |
Viñales | L6 | 4.6900 | 3.5700 | 1.131 | -0.24 | -0.19 | -0.07 |
Northwest Africa 2979 | L/LL-melt rock | 4.6600 | 3.6100 | 1.187 | -0.27 | -0.15 | -0.01 |
Northwest Africa 12334 | LL6-an | 5.1400 | 4.0100 | 1.337 | 0.21 | 0.25 | 0.14 |
Northwest Africa 12735 | LL6-an | 5.1400 | 4.0100 | 1.337 | 0.21 | 0.25 | 0.14 |
Gunlock | L3.2 | 4.7300 | 3.5100 | 1.05 | -0.2 | -0.25 | -0.15 |
Dhofar 2056 | L3 | 4.7400 | 4.0310 | 1.566 | -0.19 | 0.27 | 0.37 |
Northwest Africa 14180 | LL6 | 5.2050 | 3.9530 | 1.246 | 0.27 | 0.19 | 0.05 |
Northwest Africa 14270 | Achondrite-ung | 5.2600 | 3.8310 | 1.096 | 0.33 | 0.07 | -0.1 |
Paragould | LL5 | 5.1100 | 4.0500 | 1.393 | 0.18 | 0.29 | 0.19 |
Mezö-Madaras | L3.7 | 4.8100 | 3.4500 | 0.949 | -0.12 | -0.31 | -0.25 |
Saratov | L4 | 4.7400 | 3.4800 | 1.015 | -0.19 | -0.28 | -0.19 |
Northwest Africa 6744 | L3 | 5.0500 | 3.4300 | 0.804 | 0.12 | -0.33 | -0.4 |
Northwest Africa 869 | L3-6 | 4.6700 | 3.5200 | 1.092 | -0.26 | -0.24 | -0.11 |
Northwest Africa 8684 | L6 | 5.2430 | 3.9430 | 1.217 | 0.31 | 0.18 | 0.02 |
Northwest Africa 10786 | LL3 | 5.2800 | 3.6600 | 0.914 | 0.35 | -0.1 | -0.29 |
Northwest Africa 13856 | Achondrite-ung | 4.6470 | 3.5360 | 1.12 | -0.28 | -0.23 | -0.08 |
Northwest Africa 12273 | Chondrite-ung | 5.2580 | 3.9390 | 1.205 | 0.33 | 0.17 | 0 |
Northwest Africa 6503 | LL6 | 5.2570 | 3.9450 | 1.211 | 0.33 | 0.18 | 0.01 |
Northwest Africa 13192 | L5 | 5.2790 | 3.9050 | 1.16 | 0.35 | 0.14 | -0.04 |
Bremervörde | H/L3.9 | 4.7100 | 3.4600 | 1.011 | -0.22 | -0.3 | -0.19 |
Northwest Africa 11042 | Achondrite-prim | 4.6400 | 3.5200 | 1.107 | -0.29 | -0.24 | -0.09 |
Northwest Africa 8773 | LL3 | 5.3160 | 3.7450 | 0.981 | 0.39 | -0.02 | -0.22 |
Modoc (1905) | L6 | 4.6500 | 3.5000 | 1.082 | -0.28 | -0.26 | -0.12 |
Ausson | L5 | 4.6000 | 3.5500 | 1.158 | -0.33 | -0.21 | -0.04 |
Elenovka | L5 | 4.6000 | 3.5500 | 1.158 | -0.33 | -0.21 | -0.04 |
Homestead | L5 | 4.6200 | 3.5200 | 1.118 | -0.31 | -0.24 | -0.08 |
Northwest Africa 6745 | L3 | 5.2600 | 3.5400 | 0.805 | 0.33 | -0.22 | -0.4 |
Northwest Africa 4864 | Martian (shergottite) | 5.1000 | 3.4000 | 0.748 | 0.17 | -0.36 | -0.45 |
Moorabie | L3.8-an | 5.3200 | 3.6300 | 0.864 | 0.39 | -0.13 | -0.34 |
Moorabie | L3.8-an | 5.3500 | 3.7900 | 1.008 | 0.42 | 0.03 | -0.19 |
Northwest Africa 12266 | L3 | 5.2060 | 3.4460 | 0.739 | 0.28 | -0.32 | -0.46 |
Northwest Africa 12534 | LL7 | 5.2880 | 3.9880 | 1.238 | 0.36 | 0.22 | 0.04 |
Barwell | L5 | 4.5600 | 3.5600 | 1.189 | -0.37 | -0.2 | -0.01 |
Albareto | L/LL4 | 5.3100 | 3.9600 | 1.199 | 0.38 | 0.2 | -0 |
Vicência | LL3.2 | 5.3590 | 3.7680 | 0.981 | 0.43 | 0 | -0.22 |
Northwest Africa 8684 | L6 | 5.3100 | 3.9640 | 1.203 | 0.38 | 0.2 | 0 |
Northwest Africa 4531 | OC3 | 5.2500 | 3.4700 | 0.74 | 0.32 | -0.29 | -0.46 |
Northwest Africa 13196 | L6 | 5.3380 | 3.9160 | 1.14 | 0.41 | 0.15 | -0.06 |
Northwest Africa 4226 | H7 | 4.9500 | 3.3300 | 0.756 | 0.02 | -0.43 | -0.44 |
Bori | L6 | 4.6200 | 3.4600 | 1.058 | -0.31 | -0.3 | -0.14 |
Northwest Africa 8691 | LL4-6 | 5.3490 | 3.8920 | 1.111 | 0.42 | 0.13 | -0.09 |
Northwest Africa 6486 | L-melt rock | 4.5910 | 3.4890 | 1.102 | -0.34 | -0.28 | -0.1 |
Bensour | LL6 | 5.3000 | 4.0000 | 1.244 | 0.37 | 0.24 | 0.04 |
Northwest Africa 969 | LL6/7 | 5.3000 | 4.0000 | 1.244 | 0.37 | 0.24 | 0.04 |
Manych | LL3.4 | 5.3700 | 3.7500 | 0.958 | 0.44 | -0.01 | -0.24 |
Northwest Africa 3161 | OC3 | 5.3400 | 3.9300 | 1.153 | 0.41 | 0.17 | -0.05 |
Hedjaz | L3.7-6 | 4.5700 | 3.5100 | 1.134 | -0.36 | -0.25 | -0.07 |
Borkut | L5 | 4.6100 | 3.4600 | 1.063 | -0.32 | -0.3 | -0.14 |
Tennasilm | L4 | 4.5600 | 3.5200 | 1.149 | -0.37 | -0.24 | -0.05 |
Northwest Africa 10084 | L-imp melt | 4.5670 | 3.5010 | 1.126 | -0.36 | -0.26 | -0.07 |
Northwest Africa 7556 | L4-6 | 5.3670 | 3.8820 | 1.091 | 0.44 | 0.12 | -0.11 |
Ragland | LL3.4 | 5.2900 | 3.4900 | 0.739 | 0.36 | -0.27 | -0.46 |
Northwest Africa 10954 | L4 | 4.6630 | 3.3990 | 0.974 | -0.27 | -0.37 | -0.23 |
Northwest Africa 4864 | Martian (shergottite) | 5.3000 | 3.5000 | 0.744 | 0.37 | -0.26 | -0.46 |
Northwest Africa 3320 | LL6-melt breccia | 5.3500 | 3.9400 | 1.158 | 0.42 | 0.18 | -0.04 |
Hallingeberg | L3.4 | 4.7900 | 3.3300 | 0.839 | -0.14 | -0.43 | -0.36 |
Northwest Africa 8258 | L3 | 5.0980 | 3.3390 | 0.688 | 0.17 | -0.43 | -0.51 |
Jiddat al Harasis 567 | H3.6 | 5.2700 | 3.4500 | 0.71 | 0.34 | -0.31 | -0.49 |
Kendleton | L4 | 4.6100 | 3.4300 | 1.033 | -0.32 | -0.33 | -0.17 |
Viñales | L6 | 4.5500 | 3.5000 | 1.134 | -0.38 | -0.26 | -0.07 |
Mocs | L5-6 | 4.5500 | 3.5000 | 1.134 | -0.38 | -0.26 | -0.07 |
Northwest Africa 13004 | L4 | 5.3200 | 3.5100 | 0.744 | 0.39 | -0.25 | -0.46 |
Northwest Africa 10774 | L3 | 5.3900 | 3.8400 | 1.037 | 0.46 | 0.08 | -0.16 |
Northwest Africa 3157 | OC3 | 5.3000 | 3.4800 | 0.724 | 0.37 | -0.28 | -0.48 |
Northwest Africa 8649 | LL3.05 | 5.0220 | 3.3000 | 0.689 | 0.09 | -0.46 | -0.51 |
Northwest Africa 12534 | LL7 | 5.3450 | 4.0090 | 1.23 | 0.41 | 0.24 | 0.03 |
Northwest Africa 3157 | OC3 | 4.8500 | 3.2900 | 0.768 | -0.08 | -0.47 | -0.43 |
Northwest Africa 11575 | Achondrite-ung | 5.3490 | 4.0060 | 1.225 | 0.42 | 0.24 | 0.02 |
Northwest Africa 6503 | LL6 | 5.3400 | 4.0240 | 1.247 | 0.41 | 0.26 | 0.05 |
El Médano 301 | Chondrite-ung | 5.3800 | 3.5800 | 0.782 | 0.45 | -0.18 | -0.42 |
Northwest Africa 12266 | L3 | 4.8420 | 3.2830 | 0.765 | -0.09 | -0.48 | -0.44 |
Northwest Africa 8124 | LL3 | 5.1900 | 3.3480 | 0.649 | 0.26 | -0.42 | -0.55 |
Khohar | L3.6 | 4.5200 | 3.4800 | 1.13 | -0.41 | -0.28 | -0.07 |