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
4.6500	2.2300	-0.2130	-0.188
4.6500	2.2400	-0.2100	-0.178

Nearest neighbors in MBDB (within 0.5 permil):

Name	Class	δ¹⁸O	δ¹⁷O	Δ¹⁷O: calc	Δ δ¹⁸O	Δ δ¹⁷O	Δ Δ¹⁷O
Northwest Africa 10497	Brachinite	4.6700	2.2200	-0.208	0.02	-0.02	-0.03
Northwest Africa 10423	Eucrite-cm	4.6900	2.2300	-0.209	0.04	-0.01	-0.03
Northwest Africa 8059	LL3.05	4.7020	2.2280	-0.217	0.05	-0.01	-0.03
El Médano 395	Brachinite	4.5820	2.1700	-0.213	-0.07	-0.07	-0.03
Northwest Africa 2904	Eucrite-pmict	4.5800	2.1600	-0.222	-0.07	-0.08	-0.04
Al Huwaysah 010	Achondrite-ung	4.7300	2.3100	-0.15	0.08	0.07	0.03
Northwest Africa 7904	Brachinite	4.7810	2.2100	-0.276	0.13	-0.03	-0.09
Northwest Africa 2904	Eucrite-pmict	4.7400	2.1300	-0.335	0.09	-0.11	-0.15
Northwest Africa 3213	Mesosiderite	4.5500	2.1300	-0.236	-0.1	-0.11	-0.05
Northwest Africa 12320	Angrite	4.5450	2.3390	-0.024	-0.11	0.1	0.16
Northwest Africa 4418	Mesosiderite	4.5240	2.1450	-0.207	-0.13	-0.09	-0.02
Northwest Africa 8173	Enst achon	4.6000	2.4000	0.008	-0.05	0.17	0.19
Northwest Africa 6023	Brachinite-an	4.8380	2.2690	-0.247	0.19	0.03	-0.06
Northwest Africa 6292	Achondrite-ung	4.5500	2.4200	0.054	-0.1	0.19	0.24
Northwest Africa 5400	Achondrite-ung	4.4860	2.3670	0.034	-0.16	0.13	0.22
Northwest Africa 12004	Angrite	4.4400	2.2580	-0.051	-0.21	0.02	0.13
Northwest Africa 7605	Brachinite	4.8220	2.3700	-0.137	0.17	0.14	0.05
Northwest Africa 10637	Brachinite	4.7940	2.4050	-0.088	0.14	0.17	0.1
Northwest Africa 12004	Angrite	4.4310	2.2850	-0.019	-0.22	0.05	0.16
Northwest Africa 12320	Angrite	4.4160	2.2680	-0.028	-0.23	0.03	0.15
Old Homestead 003	Howardite	4.8800	2.3000	-0.238	0.23	0.06	-0.05
Northwest Africa 4882	Brachinite	4.4550	2.0950	-0.222	-0.2	-0.14	-0.04
Northwest Africa 4882	Brachinite	4.4550	2.0950	-0.222	-0.2	-0.14	-0.04
Northwest Africa 12320	Angrite	4.4070	2.2810	-0.011	-0.24	0.05	0.17
Zag (b)	Winonaite	4.8400	2.0600	-0.457	0.19	-0.18	-0.27
El Médano 395	Brachinite	4.8970	2.3290	-0.217	0.25	0.09	-0.03
Northwest Africa 3151	Brachinite	4.8600	2.4200	-0.107	0.21	0.19	0.08
Northwest Africa 11729	Eucrite-an	4.9340	2.3010	-0.265	0.28	0.07	-0.08
Northwest Africa 4395	Diogenite	4.3900	2.0900	-0.193	-0.26	-0.15	-0.01
Northwest Africa 7025	Mesosiderite	4.3870	2.0820	-0.199	-0.26	-0.15	-0.02
Northwest Africa 4636	Mesosiderite	4.3800	2.0900	-0.188	-0.27	-0.15	-0
Northwest Africa 8659	Eucrite	4.3760	2.0830	-0.193	-0.27	-0.15	-0.01
Ramlat as Sahmah 309	Brachinite	4.3700	2.0900	-0.182	-0.28	-0.15	0
Allan Hills 12073	Eucrite	4.4000	2.0400	-0.248	-0.25	-0.2	-0.07
Northwest Africa 10602	Eucrite-melt breccia	4.9520	2.3490	-0.226	0.3	0.11	-0.04
Northwest Africa 4882	Brachinite	4.3680	2.0640	-0.207	-0.28	-0.17	-0.02
Northwest Africa 4882	Brachinite	4.3680	2.0640	-0.207	-0.28	-0.17	-0.02
Northwest Africa 8124	LL3	4.7180	2.5680	0.115	0.07	0.33	0.3
Los Vientos 263	Pallasite, ungrouped	4.3400	2.0900	-0.167	-0.31	-0.15	0.02
Dhofar 378	Martian (shergottite)	4.4600	2.5200	0.201	-0.19	0.29	0.38
Northwest Africa 4872	Brachinite	4.3540	2.0610	-0.203	-0.3	-0.17	-0.02
Northwest Africa 4872	Brachinite	4.3540	2.0610	-0.203	-0.3	-0.17	-0.02
Northwest Africa 12543	Winonaite	4.6620	1.8800	-0.544	0.01	-0.36	-0.36
Northwest Africa 8686	Martian (shergottite)	4.4170	2.5110	0.214	-0.23	0.28	0.4
Northwest Africa 12004	Angrite	4.2840	2.1970	-0.031	-0.37	-0.04	0.15
Northwest Africa 5400	Achondrite-ung	4.8800	2.5250	-0.013	0.23	0.29	0.17
Northwest Africa 11917	Winonaite	4.5410	1.8760	-0.485	-0.11	-0.36	-0.3
Northwest Africa 10593	Martian (shergottite)	4.4840	2.5820	0.25	-0.17	0.35	0.43
Old Homestead 003	Howardite	5.0200	2.3700	-0.24	0.37	0.14	-0.06
Northwest Africa 2986	Martian (shergottite)	4.4500	2.5800	0.266	-0.2	0.35	0.45
Northwest Africa 12522	Martian (shergottite)	4.4260	2.5670	0.265	-0.22	0.33	0.45
Northwest Africa 12241	Martian (shergottite)	4.6200	2.6350	0.233	-0.03	0.4	0.42
Northwest Africa 5718	Martian (shergottite)	4.4700	2.6000	0.276	-0.18	0.37	0.46
Northwest Africa 12397	Mesosiderite	4.3230	1.9920	-0.256	-0.33	-0.24	-0.07
Northwest Africa 4872	Brachinite	4.3080	2.0120	-0.228	-0.34	-0.22	-0.05
Northwest Africa 4872	Brachinite	4.3080	2.0120	-0.228	-0.34	-0.22	-0.05
Northwest Africa 10153	Martian (nakhlite)	4.4460	2.5910	0.279	-0.2	0.36	0.46
Northwest Africa 7032	Martian (shergottite)	4.4230	2.5770	0.277	-0.23	0.34	0.46
Jiddat al Harasis 556	Howardite	4.9800	2.4800	-0.11	0.33	0.25	0.07
Northwest Africa 8679	Martian (shergottite)	4.5620	2.6420	0.27	-0.09	0.41	0.45
Allan Hills 84001	Martian (OPX)	4.6000	2.6500	0.258	-0.05	0.42	0.44
El Médano 395	Brachinite	4.2900	2.0200	-0.211	-0.36	-0.22	-0.03
Northwest Africa 6474	Brachinite	4.2340	2.1810	-0.021	-0.42	-0.05	0.16
Northwest Africa 10416	Martian	4.5000	2.6300	0.29	-0.15	0.4	0.47
Northwest Africa 10416	Martian	4.3920	2.5730	0.289	-0.26	0.34	0.47
Northwest Africa 8649	LL3.05	4.4640	2.6230	0.302	-0.19	0.39	0.48
Northwest Africa 10416	Martian	4.3100	2.5000	0.259	-0.34	0.27	0.44
Northwest Africa 10637	Brachinite	5.0480	2.4020	-0.223	0.4	0.17	-0.04
Northwest Africa 6963	Martian (shergottite)	4.3320	2.5280	0.275	-0.32	0.29	0.46
Northwest Africa 10851	Winonaite	5.0780	2.1490	-0.492	0.43	-0.09	-0.31
Northwest Africa 2986	Martian (shergottite)	4.5900	2.6700	0.283	-0.06	0.44	0.47
Northwest Africa 10593	Martian (shergottite)	4.3730	2.5760	0.302	-0.28	0.34	0.49
Northwest Africa 10720	Martian (nakhlite)	4.5810	2.6690	0.287	-0.07	0.43	0.47
Thiel Mountains 07009	EL6	4.2100	2.2100	0.021	-0.44	-0.03	0.2
Yamato 980459	Martian (shergottite)	4.3100	2.5200	0.279	-0.34	0.29	0.46
Yamato 980459	Martian (shergottite)	4.3100	2.5200	0.279	-0.34	0.29	0.46
Northwest Africa 10416	Martian	4.5390	2.6680	0.308	-0.11	0.43	0.49
Northwest Africa 5718	Martian (shergottite)	4.2900	2.5000	0.269	-0.36	0.27	0.45
Northwest Africa 10153	Martian (nakhlite)	4.5790	2.6770	0.296	-0.07	0.44	0.48
Northwest Africa 10808	Martian (shergottite)	4.6600	2.6830	0.26	0.01	0.45	0.44
Northwest Africa 7032	Martian (shergottite)	4.5990	2.6810	0.29	-0.05	0.45	0.47
Northwest Africa 8656	Martian (shergottite)	4.4170	2.6230	0.326	-0.23	0.39	0.51
Sayh al Uhaymir 094	Martian (shergottite)	4.2900	2.5100	0.279	-0.36	0.27	0.46
Northwest Africa 1457	Winonaite	5.1000	2.3000	-0.352	0.45	0.06	-0.17
Acfer 366	CH3	4.6100	1.7810	-0.616	-0.04	-0.45	-0.43
Northwest Africa 8694	Martian (Chassignite)	4.5500	2.6800	0.314	-0.1	0.45	0.5
Northwest Africa 7387	Martian (shergottite)	4.5400	2.6800	0.319	-0.11	0.45	0.5
Dar al Gani 476	Martian (shergottite)	4.5700	2.6900	0.314	-0.08	0.46	0.5
Northwest Africa 7944	Martian (shergottite)	4.3740	2.6150	0.341	-0.28	0.38	0.52
Northwest Africa 5363	Achondrite-ung	4.1830	2.1520	-0.023	-0.47	-0.08	0.16
Northwest Africa 10593	Martian (shergottite)	4.6910	2.7100	0.271	0.04	0.48	0.45
Northwest Africa 8656	Martian (shergottite)	4.2760	2.5340	0.31	-0.37	0.3	0.49
Northwest Africa 10416	Martian	4.6270	2.7160	0.31	-0.02	0.48	0.49
Northwest Africa 12543	Winonaite	5.1180	2.1200	-0.541	0.47	-0.12	-0.36
Northwest Africa 10416	Martian	4.4450	2.6740	0.363	-0.21	0.44	0.55
Jiddat al Harasis 395	Diogenite	4.2300	1.9900	-0.21	-0.42	-0.25	-0.03
Northwest Africa 8686	Martian (shergottite)	4.6710	2.7230	0.294	0.02	0.49	0.48
Northwest Africa 6448	Winonaite	5.1340	2.1670	-0.503	0.48	-0.07	-0.32
Northwest Africa 6023	Brachinite-an	5.1100	2.4020	-0.255	0.46	0.17	-0.07
Northwest Africa 2986	Martian (shergottite)	4.6500	2.7300	0.312	0	0.5	0.5
Northwest Africa 5990	Martian (shergottite)	4.2100	2.4700	0.281	-0.44	0.24	0.46
Northwest Africa 8276	L3.00	4.6430	2.7340	0.32	-0.01	0.5	0.5

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