Oxygen Isotope Plots

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Meteoritical Bulletin: Oxygen Isotope Plots

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:

Clayton R. N. and Mayeda T. K. (1999) Oxygen isotope studies of carbonaceous chondrites. Geochim. Cosmochim. Acta 63, 2089-2017 (link)
Clayton R. N. and Mayeda T. K. (1999) Oxygen isotope studies of carbonaceous chondrites. Geochim. Cosmochim. Acta 63, 2089-2017 (link)
Clayton R. N., Onuma N., Grossman L. and Mayeda T. K. (1977) Distribution of the pre-solar component in Allende and other carbonaceous chondrites. Earth Planet. Sci. Lett. 34, 209-224 (link)
Franchi I. A., Wright I. P., Sexton A. S. and Pillinger C. T. (1999) The oxygen-isotopic composition of Earth and Mars. Meteorit. Planet. Sci. 34, 657-661. (link)
Greenwood R.C., Franchi I.A., Gibson J.M. and Benedix G.K. (2012) Oxygen isotope variation in primitive achondrites: The influence of primordial, asteroidal and terrestrial processes. Geochim. Cosmochim. Acta 94, 146-163. (link)
Greenwood R.C., Franchi I.A., Gibson J.M. and Benedix G.K. (2012) Oxygen isotope variation in primitive achondrites: The influence of primordial, asteroidal and terrestrial processes. Geochim. Cosmochim. Acta 94, 146-163. (link)
Young E. D. and Russell S. S. (1998) Oxygen reservoirs in the early solar nebula inferred from an Allende CAI. Science 282, 452-455 (link)

Data summary:

δ¹⁸O	δ¹⁷O	Δ¹⁷O: given	Δ¹⁷O: linear	Comment
3.5430	1.4160	-0.4550	-0.426

Nearest neighbors in MBDB (within 0.5 permil):

Name	Class	δ¹⁸O	δ¹⁷O	Δ¹⁷O: calc	Δ δ¹⁸O	Δ δ¹⁷O	Δ Δ¹⁷O
Northwest Africa 8614	Winonaite	3.5430	1.4160	-0.426	0	0	0
Yamato 981651	Eucrite	3.5500	1.4400	-0.406	0.01	0.02	0.02
Yamato 981710	Diogenite	3.4900	1.3800	-0.435	-0.05	-0.04	-0.01
Miller Range 07001	Diogenite-olivine	3.5500	1.3400	-0.506	0.01	-0.08	-0.08
Northwest Africa 2968	Achondrite-ung	3.6400	1.4600	-0.433	0.1	0.04	-0.01
Northwest Africa 8404	Diogenite-olivine	3.4770	1.5100	-0.298	-0.07	0.09	0.13
Miller Range 07003	Diogenite	3.6600	1.4800	-0.423	0.12	0.06	0
Miller Range 07613	Diogenite	3.5500	1.5500	-0.296	0.01	0.13	0.13
Northwest Africa 11916	Achondrite-ung	3.6800	1.4700	-0.444	0.14	0.05	-0.02
Bilanga	Diogenite	3.4100	1.3500	-0.423	-0.13	-0.07	0
Northwest Africa 8739	Eucrite-pmict	3.4200	1.5080	-0.27	-0.12	0.09	0.16
Northwest Africa 10752	Diogenite	3.4490	1.5400	-0.253	-0.09	0.12	0.17
Miller Range 07003	Diogenite	3.5700	1.5700	-0.286	0.03	0.15	0.14
Jiddat al Harasis 804	Eucrite	3.4730	1.5610	-0.245	-0.07	0.15	0.18
Tirhert	Eucrite-unbr	3.4150	1.5240	-0.252	-0.13	0.11	0.17
Northwest Africa 5743	Howardite	3.4100	1.5200	-0.253	-0.13	0.1	0.17
Northwest Africa 2739	Howardite	3.4390	1.5540	-0.234	-0.1	0.14	0.19
Sayh al Uhaymir 493	Achondrite-ung	3.5300	1.5900	-0.246	-0.01	0.17	0.18
Northwest Africa 5743	Howardite	3.4100	1.5300	-0.243	-0.13	0.11	0.18
Northwest Africa 6686	Howardite	3.4800	1.5800	-0.23	-0.06	0.16	0.2
Sayh al Uhaymir 493	Achondrite-ung	3.4100	1.5400	-0.233	-0.13	0.12	0.19
Northwest Africa 1882	Mesosiderite-C	3.3600	1.4200	-0.327	-0.18	0	0.1
Berthoud	Eucrite-mmict	3.4600	1.5800	-0.219	-0.08	0.16	0.21
Northwest Africa 10019	Pallasite, ungrouped	3.5160	1.5990	-0.229	-0.03	0.18	0.2
Northwest Africa 6489	Diogenite	3.5040	1.5980	-0.224	-0.04	0.18	0.2
Northwest Africa 10019	Pallasite, ungrouped	3.4260	1.5710	-0.211	-0.12	0.16	0.22
Ooldea 015	Howardite	3.6440	1.5860	-0.309	0.1	0.17	0.12
Ramlat as Sahmah 287	Diogenite	3.3800	1.5300	-0.228	-0.16	0.11	0.2
Jiddat al Harasis 804	Eucrite	3.5010	1.6130	-0.208	-0.04	0.2	0.22
Frontier Mountain 97045	Eucrite-pmict	3.4100	1.5700	-0.203	-0.13	0.15	0.22
Northwest Africa 12562	Achondrite-ung	3.4770	1.6090	-0.199	-0.07	0.19	0.23
Miller Range 07613	Diogenite	3.5700	1.6200	-0.236	0.03	0.2	0.19
Northwest Africa 12562	Achondrite-ung	3.4920	1.6190	-0.197	-0.05	0.2	0.23
Northwest Africa 5738	Eucrite-br	3.5900	1.6200	-0.247	0.05	0.2	0.18
Northwest Africa 10023	Pallasite, PMG-an	3.5540	1.6300	-0.218	0.01	0.21	0.21
Northwest Africa 10019	Pallasite, ungrouped	3.3590	1.5290	-0.218	-0.18	0.11	0.21
Northwest Africa 5961	Eucrite-mmict	3.5800	1.6300	-0.232	0.04	0.21	0.19
Northwest Africa 10019	Pallasite, ungrouped	3.5480	1.6350	-0.21	0	0.22	0.22
Northwest Africa 5312	Mesosiderite	3.3640	1.5450	-0.204	-0.18	0.13	0.22
Northwest Africa 1461	Diogenite	3.5840	1.6340	-0.23	0.04	0.22	0.2
Northwest Africa 10019	Pallasite, ungrouped	3.6070	1.6300	-0.246	0.06	0.21	0.18
Northwest Africa 10765	Mesosiderite	3.5790	1.6450	-0.216	0.04	0.23	0.21
Miller Range 07662	Eucrite-br	3.7000	1.5900	-0.334	0.16	0.17	0.09
Northwest Africa 10023	Pallasite, PMG-an	3.3680	1.5720	-0.179	-0.18	0.16	0.25
Elephant Moraine 99402	Brachinite	3.5700	1.6500	-0.206	0.03	0.23	0.22
Northwest Africa 6909	Eucrite	3.6000	1.6470	-0.225	0.06	0.23	0.2
Northwest Africa 1982	Mesosiderite-C	3.7800	1.4700	-0.496	0.24	0.05	-0.07
Graves Nunataks 98098	Eucrite-unbr	3.3000	1.4000	-0.316	-0.24	-0.02	0.11
Northwest Africa 4272	Diogenite	3.7800	1.5000	-0.466	0.24	0.08	-0.04
Northwest Africa 5784	Diogenite	3.5600	1.6700	-0.181	0.02	0.25	0.25
Northwest Africa 10765	Mesosiderite	3.6750	1.6380	-0.273	0.13	0.22	0.15
Northwest Africa 5961	Eucrite-mmict	3.6300	1.6600	-0.228	0.09	0.24	0.2
Northwest Africa 10023	Pallasite, PMG-an	3.6080	1.6680	-0.208	0.07	0.25	0.22
Northwest Africa 2339	Eucrite	3.6600	1.6500	-0.253	0.12	0.23	0.17
Northwest Africa 4271	Eucrite-pmict	3.3400	1.2500	-0.487	-0.2	-0.17	-0.06
Northwest Africa 10019	Pallasite, ungrouped	3.2860	1.4790	-0.23	-0.26	0.06	0.2
Northwest Africa 8671	Eucrite-an	3.6880	1.6420	-0.276	0.15	0.23	0.15
La'gad 002	Pallasite, PMG-an	3.6230	1.6800	-0.204	0.08	0.26	0.22
Tirhert	Eucrite-unbr	3.2680	1.4510	-0.248	-0.28	0.04	0.18
Thiel Mountains 07016	Pallasite	3.3100	1.5700	-0.151	-0.23	0.15	0.28
Northwest Africa 6909	Eucrite	3.6470	1.6830	-0.213	0.1	0.27	0.21
Northwest Africa 7831	Diogenite	3.6800	1.6770	-0.237	0.14	0.26	0.19
Northwest Africa 8027	Howardite	3.6800	1.6800	-0.234	0.14	0.26	0.19
Northwest Africa 10023	Pallasite, PMG-an	3.6670	1.6930	-0.214	0.12	0.28	0.21
Northwest Africa 4255	Diogenite	3.2500	1.3100	-0.38	-0.29	-0.11	0.05
Northwest Africa 8404	Diogenite-olivine	3.2330	1.4520	-0.229	-0.31	0.04	0.2
Northwest Africa 10765	Mesosiderite	3.7330	1.6640	-0.277	0.19	0.25	0.15
Northwest Africa 1459	Diogenite	3.6200	1.7200	-0.162	0.08	0.3	0.26
Tirhert	Eucrite-unbr	3.2330	1.4740	-0.207	-0.31	0.06	0.22
Chasseron	Pallasite, PMG	3.2390	1.5140	-0.17	-0.3	0.1	0.26
Northwest Africa 7824	Mesosiderite	3.7180	1.6840	-0.249	0.18	0.27	0.18
Northwest Africa 4482	Pallasite, PMG	3.6500	1.7200	-0.178	0.11	0.3	0.25
Northwest Africa 4223	Diogenite	3.2200	1.4800	-0.194	-0.32	0.06	0.23
Northwest Africa 5134	Eucrite	3.7070	1.7070	-0.221	0.16	0.29	0.21
Northwest Africa 12396	Mesosiderite	3.7450	1.6890	-0.258	0.2	0.27	0.17
Northwest Africa 12566	Mesosiderite-C3	3.2090	1.4780	-0.191	-0.33	0.06	0.24
Northwest Africa 4215	Diogenite	3.2030	1.4310	-0.235	-0.34	0.02	0.19
Miller Range 07001	Diogenite-olivine	3.8000	1.6400	-0.336	0.26	0.22	0.09
Northwest Africa 5234	Eucrite-mmict	3.6940	1.7270	-0.194	0.15	0.31	0.23
Northwest Africa 6105	Eucrite-pmict	3.7730	1.6790	-0.283	0.23	0.26	0.14
Northwest Africa 1817	Mesosiderite-B	3.1900	1.4600	-0.199	-0.35	0.04	0.23
Northwest Africa 7824	Mesosiderite	3.7570	1.7080	-0.246	0.21	0.29	0.18
Northwest Africa 8671	Eucrite-an	3.7760	1.6940	-0.27	0.23	0.28	0.16
Northwest Africa 1461	Diogenite	3.1770	1.4100	-0.242	-0.37	-0.01	0.18
Yamato 980318	Eucrite-cm	3.1800	1.3600	-0.294	-0.36	-0.06	0.13
Yamato 980318	Eucrite-cm	3.1800	1.3600	-0.294	-0.36	-0.06	0.13
Northwest Africa 10015	Pallasite, PMG	3.7000	1.7500	-0.174	0.16	0.33	0.25
Northwest Africa 4269	Eucrite-mmict	3.7620	1.7180	-0.238	0.22	0.3	0.19
Northwest Africa 10023	Pallasite, PMG-an	3.1670	1.4400	-0.207	-0.38	0.02	0.22
Northwest Africa 1880	Diogenite	3.1600	1.4200	-0.223	-0.38	0	0.2
Jepara	Pallasite, PMG	3.1600	1.3800	-0.263	-0.38	-0.04	0.16
Northwest Africa 2738	Howardite	3.7310	1.7540	-0.186	0.19	0.34	0.24
Northwest Africa 10752	Diogenite	3.1590	1.3610	-0.282	-0.38	-0.05	0.14
Northwest Africa 4801	Angrite	3.5950	1.8090	-0.06	0.05	0.39	0.37
Northwest Africa 12217	Achondrite-ung	3.6600	1.7960	-0.107	0.12	0.38	0.32
Northwest Africa 5312	Mesosiderite	3.1490	1.4840	-0.153	-0.39	0.07	0.27
Jiddat al Harasis 203	Mesosiderite-C2	3.1430	1.4030	-0.231	-0.4	-0.01	0.2
Northwest Africa 10023	Pallasite, PMG-an	3.1430	1.4580	-0.176	-0.4	0.04	0.25
Northwest Africa 12605	Eucrite	3.7750	1.7460	-0.217	0.23	0.33	0.21
Northwest Africa 5349	Eucrite-pmict	3.8000	1.7300	-0.246	0.26	0.31	0.18
Northwest Africa 4801	Angrite	3.5440	1.8230	-0.02	0	0.41	0.41
Northwest Africa 12566	Mesosiderite-C3	3.1320	1.4250	-0.204	-0.41	0.01	0.22
Miller Range 07662	Eucrite-br	3.8600	1.6800	-0.327	0.32	0.26	0.1
Miller Range 07662	Eucrite-br	3.8900	1.6400	-0.383	0.35	0.22	0.04
Northwest Africa 7674	Lodranite	3.4880	1.0040	-0.81	-0.06	-0.41	-0.38
Northwest Africa 12217	Achondrite-ung	3.7230	1.7930	-0.143	0.18	0.38	0.28
Northwest Africa 10019	Pallasite, ungrouped	3.7820	1.7600	-0.207	0.24	0.34	0.22
Northwest Africa 4523	Eucrite	3.7910	1.7570	-0.214	0.25	0.34	0.21
Northwest Africa 1645	Mesosiderite-B	3.7900	1.7600	-0.211	0.25	0.34	0.22
Northwest Africa 3211	Eucrite	3.8500	1.7100	-0.292	0.31	0.29	0.13
Pecora Escarpment 01021	Eucrite-mmict	3.8310	1.7400	-0.252	0.29	0.32	0.17
Malotas (b)	Eucrite	3.7870	1.7750	-0.194	0.24	0.36	0.23
Northwest Africa 10074	Acapulcoite	3.7240	1.0210	-0.915	0.18	-0.4	-0.49
Malotas (b)	Eucrite	3.7790	1.7850	-0.18	0.24	0.37	0.25
Umm as Samim 024	Eucrite-cm	3.8600	1.7200	-0.287	0.32	0.3	0.14
Northwest Africa 3212	Eucrite	3.8400	1.7400	-0.257	0.3	0.32	0.17
Northwest Africa 8671	Eucrite-an	3.8470	1.7360	-0.264	0.3	0.32	0.16
Northwest Africa 10019	Pallasite, ungrouped	3.8170	1.7630	-0.222	0.27	0.35	0.2
Northwest Africa 5784	Diogenite	3.1000	1.3900	-0.222	-0.44	-0.03	0.2
Northwest Africa 8404	Diogenite-olivine	3.1030	1.3280	-0.286	-0.44	-0.09	0.14
Northwest Africa 12562	Achondrite-ung	3.7950	1.7880	-0.185	0.25	0.37	0.24
Northwest Africa 10074	Acapulcoite	3.6910	0.9910	-0.928	0.15	-0.43	-0.5
Northwest Africa 7193	Eucrite-an	3.8100	1.7800	-0.201	0.27	0.36	0.23
Northwest Africa 5350	Howardite	3.7900	1.8000	-0.171	0.25	0.38	0.26
Northwest Africa 2968	Achondrite-ung	3.0800	1.4400	-0.162	-0.46	0.02	0.26
Northwest Africa 4223	Diogenite	3.0800	1.4400	-0.162	-0.46	0.02	0.26
Northwest Africa 10154	Diogenite-an	3.0860	1.3320	-0.273	-0.46	-0.08	0.15
Northwest Africa 10074	Acapulcoite	3.9490	1.1760	-0.877	0.41	-0.24	-0.45
Northwest Africa 10019	Pallasite, ungrouped	3.8780	1.7600	-0.257	0.34	0.34	0.17
La'gad 002	Pallasite, PMG-an	3.8610	1.7770	-0.231	0.32	0.36	0.2
Northwest Africa 10023	Pallasite, PMG-an	3.8870	1.7530	-0.268	0.34	0.34	0.16
Northwest Africa 4529	Lodranite	3.4670	0.9390	-0.864	-0.08	-0.48	-0.44
Northwest Africa 10019	Pallasite, ungrouped	3.8710	1.7840	-0.229	0.33	0.37	0.2
Northwest Africa 10252	Pallasite, PMG-an	3.0490	1.3510	-0.234	-0.49	-0.07	0.19

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