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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 |
---|---|---|---|---|
5.3900 | 2.3500 | -0.4500 | -0.476 |
Name | Class | δ18O | δ17O | Δ17O: calc | Δ δ18O | Δ δ17O | Δ Δ17O |
---|---|---|---|---|---|---|---|
Northwest Africa 6369 | Iron, IAB complex | 5.3900 | 2.3500 | -0.476 | 0 | 0 | 0 |
Northwest Africa 10851 | Winonaite | 5.4380 | 2.3450 | -0.506 | 0.05 | -0 | -0.03 |
South Oman | EH4/5 | 5.4100 | 2.4400 | -0.397 | 0.02 | 0.09 | 0.08 |
Northwest Africa 11807 | Winonaite | 5.4870 | 2.3600 | -0.517 | 0.1 | 0.01 | -0.04 |
Northwest Africa 13432 | Winonaite | 5.3280 | 2.2720 | -0.521 | -0.06 | -0.08 | -0.05 |
Errachidia 004 | Winonaite | 5.2760 | 2.2960 | -0.47 | -0.11 | -0.05 | 0.01 |
Ramlat Fasad 531 | Winonaite | 5.5060 | 2.4000 | -0.487 | 0.12 | 0.05 | -0.01 |
Northwest Africa 4929 | Brachinite | 5.3300 | 2.4900 | -0.305 | -0.06 | 0.14 | 0.17 |
Silistra | Achondrite-ung | 5.3000 | 2.5000 | -0.279 | -0.09 | 0.15 | 0.2 |
Northwest Africa 11807 | Winonaite | 5.5670 | 2.3950 | -0.524 | 0.18 | 0.04 | -0.05 |
Northwest Africa 12543 | Winonaite | 5.5830 | 2.3450 | -0.582 | 0.19 | -0 | -0.11 |
Northwest Africa 13917 | Winonaite | 5.2360 | 2.2320 | -0.513 | -0.15 | -0.12 | -0.04 |
Northwest Africa 10851 | Winonaite | 5.2420 | 2.2240 | -0.524 | -0.15 | -0.13 | -0.05 |
Northwest Africa 2251 | Howardite | 5.2000 | 2.3000 | -0.427 | -0.19 | -0.05 | 0.05 |
Thiel Mountains 07014 | Eucrite | 5.2700 | 2.5100 | -0.254 | -0.12 | 0.16 | 0.22 |
Northwest Africa 10637 | Brachinite | 5.2730 | 2.5260 | -0.239 | -0.12 | 0.18 | 0.24 |
Northwest Africa 6023 | Brachinite-an | 5.2260 | 2.4910 | -0.25 | -0.16 | 0.14 | 0.23 |
Northwest Africa 6023 | Brachinite-an | 5.1620 | 2.4450 | -0.262 | -0.23 | 0.09 | 0.21 |
Northwest Africa 13432 | Winonaite | 5.1960 | 2.1960 | -0.528 | -0.19 | -0.15 | -0.05 |
Grapevine Mesa | CBa | 5.2830 | 2.0910 | -0.679 | -0.11 | -0.26 | -0.2 |
Northwest Africa 4042 | Achondrite-ung | 5.1780 | 2.5390 | -0.177 | -0.21 | 0.19 | 0.3 |
Northwest Africa 6023 | Brachinite-an | 5.1100 | 2.4020 | -0.278 | -0.28 | 0.05 | 0.2 |
Northwest Africa 12532 | Brachinite | 5.1190 | 2.4560 | -0.229 | -0.27 | 0.11 | 0.25 |
Northwest Africa 1457 | Winonaite | 5.1000 | 2.3000 | -0.374 | -0.29 | -0.05 | 0.1 |
Northwest Africa 6448 | Winonaite | 5.1550 | 2.1660 | -0.537 | -0.23 | -0.18 | -0.06 |
Peña Blanca Spring | Aubrite | 5.2670 | 2.6390 | -0.123 | -0.12 | 0.29 | 0.35 |
Northwest Africa 6448 | Winonaite | 5.1340 | 2.1670 | -0.525 | -0.26 | -0.18 | -0.05 |
Kota-Kota | EH3 | 5.1200 | 2.5200 | -0.165 | -0.27 | 0.17 | 0.31 |
Northwest Africa 4518 | Achondrite-ung | 5.4700 | 2.6600 | -0.209 | 0.08 | 0.31 | 0.27 |
Northwest Africa 13917 | Winonaite | 5.1070 | 2.1790 | -0.499 | -0.28 | -0.17 | -0.02 |
Silistra | Achondrite-ung | 5.5500 | 2.6400 | -0.27 | 0.16 | 0.29 | 0.21 |
Allan Hills A78113 | Aubrite | 5.2700 | 2.6700 | -0.094 | -0.12 | 0.32 | 0.38 |
Dhofar 1441 | Achondrite-ung | 5.5080 | 2.6750 | -0.213 | 0.12 | 0.33 | 0.26 |
Northwest Africa 10637 | Brachinite | 5.0480 | 2.4020 | -0.245 | -0.34 | 0.05 | 0.23 |
Northwest Africa 7388 | Brachinite | 5.4130 | 2.7050 | -0.134 | 0.02 | 0.36 | 0.34 |
Northwest Africa 12543 | Winonaite | 5.1180 | 2.1200 | -0.563 | -0.27 | -0.23 | -0.09 |
Northwest Africa 8059 | LL3.05 | 5.2770 | 2.6880 | -0.08 | -0.11 | 0.34 | 0.4 |
Northwest Africa 11729 | Eucrite-an | 5.5400 | 2.6800 | -0.225 | 0.15 | 0.33 | 0.25 |
MacAlpine Hills 88104 | Lunar (anorth) | 5.5000 | 2.7000 | -0.184 | 0.11 | 0.35 | 0.29 |
Old Homestead 003 | Howardite | 5.0200 | 2.3700 | -0.263 | -0.37 | 0.02 | 0.21 |
Northwest Africa 10851 | Winonaite | 5.0780 | 2.1490 | -0.514 | -0.31 | -0.2 | -0.04 |
South Oman | EH4/5 | 5.6330 | 2.6320 | -0.322 | 0.24 | 0.28 | 0.15 |
Northwest Africa 8173 | Enst achon | 5.2650 | 2.7080 | -0.054 | -0.13 | 0.36 | 0.42 |
Northwest Africa 6077 | Achondrite-ung | 5.1800 | 2.6670 | -0.05 | -0.21 | 0.32 | 0.43 |
Dhofar 1983 | Lunar (feldsp. breccia) | 5.1000 | 2.6000 | -0.075 | -0.29 | 0.25 | 0.4 |
Bishopville | Aubrite | 5.0850 | 2.5870 | -0.08 | -0.31 | 0.24 | 0.4 |
Northwest Africa 11807 | Winonaite | 5.7580 | 2.4770 | -0.541 | 0.37 | 0.13 | -0.07 |
Cumberland Falls | Aubrite | 5.3900 | 2.7400 | -0.087 | 0 | 0.39 | 0.39 |
Adhi Kot | EH4 | 5.4100 | 2.7430 | -0.094 | 0.02 | 0.39 | 0.38 |
Elephant Moraine 83322 | EH3 | 5.1760 | 2.6850 | -0.03 | -0.21 | 0.34 | 0.45 |
Elephant Moraine 90033 | Aubrite | 5.1800 | 2.6900 | -0.027 | -0.21 | 0.34 | 0.45 |
Ooldea 014 | Achondrite-prim-ung | 5.5510 | 1.9820 | -0.927 | 0.16 | -0.37 | -0.45 |
Bishopville | Aubrite | 5.2900 | 2.7400 | -0.035 | -0.1 | 0.39 | 0.44 |
Grapevine Mesa | CBa | 4.9980 | 2.4560 | -0.165 | -0.39 | 0.11 | 0.31 |
Northwest Africa 12532 | Brachinite | 5.5730 | 2.7130 | -0.209 | 0.18 | 0.36 | 0.27 |
Lewis Cliff 88180 | EH5 | 5.2950 | 2.7460 | -0.031 | -0.09 | 0.4 | 0.44 |
LaPaz Icefield 02205 | Lunar (basalt) | 5.6000 | 2.7000 | -0.237 | 0.21 | 0.35 | 0.24 |
Northwest Africa 7904 | Brachinite | 5.1660 | 2.6940 | -0.016 | -0.22 | 0.34 | 0.46 |
Pecora Escarpment 91020 | EL3 | 5.2700 | 2.7440 | -0.02 | -0.12 | 0.39 | 0.46 |
Khor Temiki | Aubrite | 5.2870 | 2.7520 | -0.021 | -0.1 | 0.4 | 0.45 |
Peña Blanca Spring | Aubrite | 5.3200 | 2.7600 | -0.03 | -0.07 | 0.41 | 0.45 |
Sahara 97096 | EH3 | 5.4450 | 2.7660 | -0.09 | 0.06 | 0.42 | 0.39 |
MacAlpine Hills 88136 | EL3 | 5.0010 | 2.5100 | -0.113 | -0.39 | 0.16 | 0.36 |
Adhi Kot | EH4 | 5.4200 | 2.7700 | -0.073 | 0.03 | 0.42 | 0.4 |
Shallowater | Aubrite | 5.3400 | 2.7700 | -0.031 | -0.05 | 0.42 | 0.45 |
Northwest Africa 12951 | Winonaite | 5.0350 | 2.1190 | -0.521 | -0.36 | -0.23 | -0.05 |
Peña Blanca Spring | Aubrite | 5.1900 | 2.7250 | 0.003 | -0.2 | 0.38 | 0.48 |
Northwest Africa 5400 | Achondrite-ung | 5.2230 | 2.7410 | 0.001 | -0.17 | 0.39 | 0.48 |
Jiddat al Harasis 556 | Howardite | 4.9800 | 2.4800 | -0.132 | -0.41 | 0.13 | 0.34 |
Northwest Africa 6172 | Achondrite-ung | 5.3500 | 2.7800 | -0.026 | -0.04 | 0.43 | 0.45 |
Peña Blanca Spring | Aubrite | 5.3300 | 2.7800 | -0.016 | -0.06 | 0.43 | 0.46 |
Northwest Africa 10602 | Eucrite-melt breccia | 4.9520 | 2.3490 | -0.248 | -0.44 | -0 | 0.23 |
Elephant Moraine 87521 | Lunar (basalt) | 5.3900 | 2.7900 | -0.037 | 0 | 0.44 | 0.44 |
Happy Canyon | EL6/7 | 4.9860 | 2.5260 | -0.089 | -0.4 | 0.18 | 0.39 |
Tanezrouft 031 | EL5 | 5.2590 | 2.7710 | 0.012 | -0.13 | 0.42 | 0.49 |
Larkman Nunatak 04316 | Aubrite | 5.2780 | 2.7780 | 0.009 | -0.11 | 0.43 | 0.49 |
LaPaz Icefield 03719 | Aubrite-an | 5.1600 | 2.7320 | 0.025 | -0.23 | 0.38 | 0.5 |
Lewis Cliff 87007 | Aubrite | 5.0900 | 2.6800 | 0.01 | -0.3 | 0.33 | 0.49 |
Elephant Moraine 92063 | EL6 | 5.4340 | 2.7960 | -0.054 | 0.04 | 0.45 | 0.42 |
Northwest Africa 7904 | Brachinite | 5.3480 | 2.7970 | -0.008 | -0.04 | 0.45 | 0.47 |
Mount Egerton | Aubrite-an | 5.3060 | 2.7920 | 0.009 | -0.08 | 0.44 | 0.48 |
Allan Hills 84007 | Aubrite | 5.2470 | 2.7790 | 0.027 | -0.14 | 0.43 | 0.5 |
Elephant Moraine 90033 | Aubrite | 5.0260 | 2.6190 | -0.017 | -0.36 | 0.27 | 0.46 |
LaPaz Icefield 02233 | Aubrite | 5.1600 | 2.7400 | 0.033 | -0.23 | 0.39 | 0.51 |
Allan Hills A78113 | Aubrite | 5.2200 | 2.7700 | 0.032 | -0.17 | 0.42 | 0.51 |
Northwest Africa 8173 | Enst achon | 5.0130 | 2.6050 | -0.025 | -0.38 | 0.26 | 0.45 |
Norton County | Aubrite | 5.0200 | 2.6200 | -0.013 | -0.37 | 0.27 | 0.46 |
Lewis Cliff 88714 | EL6 | 5.0180 | 2.6180 | -0.014 | -0.37 | 0.27 | 0.46 |
Northwest Africa 11729 | Eucrite-an | 4.9340 | 2.3010 | -0.287 | -0.46 | -0.05 | 0.19 |
Cumberland Falls | Aubrite | 5.1800 | 2.7600 | 0.043 | -0.21 | 0.41 | 0.52 |
Bustee | Aubrite | 5.3490 | 2.8090 | 0.003 | -0.04 | 0.46 | 0.48 |
LaPaz Icefield 02233 | Aubrite | 5.2500 | 2.7900 | 0.036 | -0.14 | 0.44 | 0.51 |
Grapevine Mesa | CBa | 5.8400 | 2.2390 | -0.822 | 0.45 | -0.11 | -0.35 |
Peña Blanca Spring | Aubrite | 5.0600 | 2.6800 | 0.026 | -0.33 | 0.33 | 0.5 |
Northwest Africa 5400 | Achondrite-ung | 5.0610 | 2.6810 | 0.026 | -0.33 | 0.33 | 0.5 |
Norton County | Aubrite | 4.9790 | 2.5720 | -0.04 | -0.41 | 0.22 | 0.44 |
Pesyanoe | Aubrite | 5.3700 | 2.8200 | 0.003 | -0.02 | 0.47 | 0.48 |
Parsa | EH3 | 5.3300 | 2.8200 | 0.024 | -0.06 | 0.47 | 0.5 |
Northwest Africa 4537 | Aubrite | 5.0210 | 2.6500 | 0.016 | -0.37 | 0.3 | 0.49 |
Norton County | Aubrite | 5.3780 | 2.8270 | 0.006 | -0.01 | 0.48 | 0.48 |
Aubres | Aubrite | 5.2920 | 2.8190 | 0.043 | -0.1 | 0.47 | 0.52 |
Mayo Belwa | Aubrite | 4.9530 | 2.5470 | -0.051 | -0.44 | 0.2 | 0.42 |
Blithfield | EL6 | 5.2900 | 2.8200 | 0.045 | -0.1 | 0.47 | 0.52 |
Northwest Africa 12532 | Brachinite | 4.9080 | 2.3450 | -0.229 | -0.48 | -0 | 0.25 |
Northwest Africa 5548 | Achondrite-ung | 5.0800 | 2.7200 | 0.055 | -0.31 | 0.37 | 0.53 |
Northwest Africa 7904 | Brachinite | 4.9990 | 2.6340 | 0.012 | -0.39 | 0.28 | 0.49 |
Allan Hills A78113 | Aubrite | 5.1170 | 2.7510 | 0.067 | -0.27 | 0.4 | 0.54 |
Mayo Belwa | Aubrite | 5.4800 | 2.8300 | -0.044 | 0.09 | 0.48 | 0.43 |
Allan Hills 88046 | EH3 | 4.9050 | 2.4200 | -0.153 | -0.48 | 0.07 | 0.32 |
Itqiy | EH7-an | 5.2500 | 2.8200 | 0.066 | -0.14 | 0.47 | 0.54 |
Qingzhen | EH3 | 5.5200 | 2.8260 | -0.069 | 0.13 | 0.48 | 0.41 |
El Médano 395 | Brachinite | 4.8970 | 2.3290 | -0.239 | -0.49 | -0.02 | 0.24 |
Northwest Africa 4741 | Achondrite-ung | 4.9900 | 2.6400 | 0.022 | -0.4 | 0.29 | 0.5 |
Thiel Mountains 91714 | EL5 | 5.2790 | 2.8330 | 0.064 | -0.11 | 0.48 | 0.54 |
Peña Blanca Spring | Aubrite | 5.1800 | 2.8000 | 0.083 | -0.21 | 0.45 | 0.56 |