Oxygen Isotope Plots

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Meteoritical Bulletin: Oxygen Isotope Plots

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Change values (separate multiple values with semicolons) - δ¹⁸O: δ¹⁷O: Δ¹⁷O:
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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).

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
5.1000	2.3000	-0.4000	-0.352

Nearest neighbors in MBDB (within 0.5 permil):

Name	Class	δ¹⁸O	δ¹⁷O	Δ¹⁷O: calc	Δ δ¹⁸O	Δ δ¹⁷O	Δ Δ¹⁷O
Northwest Africa 1457	Winonaite	5.1000	2.3000	-0.352	0	0	0
Northwest Africa 2251	Howardite	5.2000	2.3000	-0.404	0.1	0	-0.05
Northwest Africa 6023	Brachinite-an	5.1100	2.4020	-0.255	0.01	0.1	0.1
Old Homestead 003	Howardite	5.0200	2.3700	-0.24	-0.08	0.07	0.11
Northwest Africa 10637	Brachinite	5.0480	2.4020	-0.223	-0.05	0.1	0.13
Northwest Africa 13917	Winonaite	5.1070	2.1790	-0.477	0.01	-0.12	-0.12
Northwest Africa 6448	Winonaite	5.1340	2.1670	-0.503	0.03	-0.13	-0.15
Northwest Africa 13432	Winonaite	5.1960	2.1960	-0.506	0.1	-0.1	-0.15
Northwest Africa 6448	Winonaite	5.1550	2.1660	-0.515	0.06	-0.13	-0.16
Northwest Africa 13917	Winonaite	5.2360	2.2320	-0.491	0.14	-0.07	-0.14
Northwest Africa 10851	Winonaite	5.0780	2.1490	-0.492	-0.02	-0.15	-0.14
Northwest Africa 10602	Eucrite-melt breccia	4.9520	2.3490	-0.226	-0.15	0.05	0.13
Northwest Africa 12532	Brachinite	5.1190	2.4560	-0.206	0.02	0.16	0.15
Northwest Africa 6023	Brachinite-an	5.1620	2.4450	-0.239	0.06	0.15	0.11
Northwest Africa 10851	Winonaite	5.2420	2.2240	-0.502	0.14	-0.08	-0.15
Northwest Africa 11729	Eucrite-an	4.9340	2.3010	-0.265	-0.17	0	0.09
Northwest Africa 13673	Achondrite (brachinite-like)	5.2000	2.4440	-0.26	0.1	0.14	0.09
Errachidia 004	Winonaite	5.2760	2.2960	-0.448	0.18	-0	-0.1
Northwest Africa 12543	Winonaite	5.1180	2.1200	-0.541	0.02	-0.18	-0.19
Grapevine Mesa	CBa	4.9980	2.4560	-0.143	-0.1	0.16	0.21
Northwest Africa 12951	Winonaite	5.0350	2.1190	-0.499	-0.06	-0.18	-0.15
Northwest Africa 12532	Brachinite	4.9080	2.3450	-0.207	-0.19	0.05	0.14
El Médano 395	Brachinite	4.8970	2.3290	-0.217	-0.2	0.03	0.13
Jiddat al Harasis 556	Howardite	4.9800	2.4800	-0.11	-0.12	0.18	0.24
Old Homestead 003	Howardite	4.8800	2.3000	-0.238	-0.22	0	0.11
Kota-Kota	EH3	5.1200	2.5200	-0.142	0.02	0.22	0.21
Northwest Africa 6023	Brachinite-an	5.2260	2.4910	-0.227	0.13	0.19	0.13
Allan Hills 88046	EH3	4.9050	2.4200	-0.131	-0.19	0.12	0.22
Northwest Africa 13432	Winonaite	5.3280	2.2720	-0.499	0.23	-0.03	-0.15
MacAlpine Hills 88136	EL3	5.0010	2.5100	-0.091	-0.1	0.21	0.26
Northwest Africa 4042	Achondrite-ung	5.1780	2.5390	-0.154	0.08	0.24	0.2
Happy Canyon	EL6/7	4.9860	2.5260	-0.067	-0.11	0.23	0.29
Northwest Africa 6023	Brachinite-an	4.8380	2.2690	-0.247	-0.26	-0.03	0.11
Northwest Africa 3151	Brachinite	4.8600	2.4200	-0.107	-0.24	0.12	0.24
Thiel Mountains 07014	Eucrite	5.2700	2.5100	-0.23	0.17	0.21	0.12
Grapevine Mesa	CBa	5.2830	2.0910	-0.656	0.18	-0.21	-0.3
Northwest Africa 13917	Winonaite	4.9590	2.0550	-0.524	-0.14	-0.25	-0.17
Silistra	Achondrite-ung	5.3000	2.5000	-0.256	0.2	0.2	0.1
Northwest Africa 10637	Brachinite	5.2730	2.5260	-0.216	0.17	0.23	0.14
Northwest Africa 7605	Brachinite	4.8220	2.3700	-0.137	-0.28	0.07	0.21
Bishopville	Aubrite	5.0850	2.5870	-0.057	-0.01	0.29	0.29
Mayo Belwa	Aubrite	4.9530	2.5470	-0.029	-0.15	0.25	0.32
Northwest Africa 14988	Winonaite	5.3900	2.2910	-0.512	0.29	-0.01	-0.16
Northwest Africa 14988	Winonaite	4.9590	2.0440	-0.535	-0.14	-0.26	-0.18
Northwest Africa 6369	Iron, IAB complex	5.3900	2.3500	-0.453	0.29	0.05	-0.1
Norton County	Aubrite	4.9790	2.5720	-0.017	-0.12	0.27	0.33
Northwest Africa 4929	Brachinite	5.3300	2.4900	-0.282	0.23	0.19	0.07
Dhofar 1983	Lunar (feldsp. breccia)	5.1000	2.6000	-0.052	0	0.3	0.3
Yamato 691	EH3	4.8300	2.4600	-0.052	-0.27	0.16	0.3
Northwest Africa 5400	Achondrite-ung	4.8800	2.5250	-0.013	-0.22	0.23	0.34
Northwest Africa 8173	Enst achon	5.0130	2.6050	-0.002	-0.09	0.31	0.35
Northwest Africa 10637	Brachinite	4.7940	2.4050	-0.088	-0.31	0.11	0.26
Elephant Moraine 90033	Aubrite	5.0260	2.6190	0.005	-0.07	0.32	0.36
Lewis Cliff 88714	EL6	5.0180	2.6180	0.009	-0.08	0.32	0.36
Northwest Africa 12951	Winonaite	4.8870	2.0490	-0.492	-0.21	-0.25	-0.14
Norton County	Aubrite	5.0200	2.6200	0.01	-0.08	0.32	0.36
Northwest Africa 7904	Brachinite	4.7810	2.2100	-0.276	-0.32	-0.09	0.08
Northwest Africa 15317	Angrite	4.8020	2.4570	-0.04	-0.3	0.16	0.31
South Oman	EH4/5	5.4100	2.4400	-0.373	0.31	0.14	-0.02
Northwest Africa 10851	Winonaite	5.4380	2.3450	-0.483	0.34	0.05	-0.13
Bustee	Aubrite	4.8300	2.5100	-0.002	-0.27	0.21	0.35
Pesyanoe	Aubrite	4.7890	2.4570	-0.033	-0.31	0.16	0.32
Northwest Africa 7904	Brachinite	4.9990	2.6340	0.035	-0.1	0.33	0.39
Zag (b)	Winonaite	4.8400	2.0600	-0.457	-0.26	-0.24	-0.1
Zakłodzie	Enst achon-ung	4.8600	2.5600	0.033	-0.24	0.26	0.38
Northwest Africa 4741	Achondrite-ung	4.9900	2.6400	0.045	-0.11	0.34	0.4
Northwest Africa 4537	Aubrite	5.0210	2.6500	0.039	-0.08	0.35	0.39
Northwest Africa 13673	Achondrite (brachinite-like)	5.3820	2.5350	-0.264	0.28	0.24	0.09
Northwest Africa 15317	Angrite	4.7340	2.3530	-0.109	-0.37	0.05	0.24
Al Huwaysah 010	Achondrite-ung	4.7300	2.3100	-0.15	-0.37	0.01	0.2
Allan Hills A78113	Aubrite	4.8100	2.5300	0.029	-0.29	0.23	0.38
Northwest Africa 14988	Winonaite	4.8560	2.0210	-0.504	-0.24	-0.28	-0.15
Northwest Africa 13432	Winonaite	4.8550	2.0160	-0.509	-0.24	-0.28	-0.16
Northwest Africa 6077	Achondrite-ung	5.1800	2.6670	-0.027	0.08	0.37	0.33
Peña Blanca Spring	Aubrite	5.2670	2.6390	-0.1	0.17	0.34	0.25
Itqiy	EH7-an	4.8000	2.5300	0.034	-0.3	0.23	0.39
Northwest Africa 13673	Achondrite (brachinite-like)	5.3900	2.5450	-0.258	0.29	0.25	0.09
Lewis Cliff 87007	Aubrite	5.0900	2.6800	0.033	-0.01	0.38	0.39
Peña Blanca Spring	Aubrite	5.0600	2.6800	0.049	-0.04	0.38	0.4
Northwest Africa 5400	Achondrite-ung	5.0610	2.6810	0.049	-0.04	0.38	0.4
Northwest Africa 11807	Winonaite	5.4870	2.3600	-0.493	0.39	0.06	-0.14
Elephant Moraine 83322	EH3	5.1760	2.6850	-0.007	0.08	0.39	0.35
Northwest Africa 2904	Eucrite-pmict	4.7400	2.1300	-0.335	-0.36	-0.17	0.02
Elephant Moraine 90033	Aubrite	5.1800	2.6900	-0.004	0.08	0.39	0.35
Northwest Africa 7904	Brachinite	5.1660	2.6940	0.008	0.07	0.39	0.36
Northwest Africa 5548	Achondrite-ung	5.0000	2.6900	0.09	-0.1	0.39	0.44
Northwest Africa 8059	LL3.05	4.7020	2.2280	-0.217	-0.4	-0.07	0.13
Allan Hills A78113	Aubrite	5.2700	2.6700	-0.07	0.17	0.37	0.28
Northwest Africa 10423	Eucrite-cm	4.6900	2.2300	-0.209	-0.41	-0.07	0.14
Queen Alexandra Range 94204	EH7	4.7130	2.4530	0.002	-0.39	0.15	0.35
Qingzhen	EH3	4.7000	2.4200	-0.024	-0.4	0.12	0.33
Ramlat Fasad 531	Winonaite	5.5060	2.4000	-0.463	0.41	0.1	-0.11
Northwest Africa 5548	Achondrite-ung	5.0800	2.7200	0.078	-0.02	0.42	0.43
Northwest Africa 8059	LL3.05	5.2770	2.6880	-0.056	0.18	0.39	0.3
Peña Blanca Spring	Aubrite	5.1900	2.7250	0.026	0.09	0.43	0.38
LaPaz Icefield 03719	Aubrite-an	5.1600	2.7320	0.049	0.06	0.43	0.4
Northwest Africa 10497	Brachinite	4.6700	2.2200	-0.208	-0.43	-0.08	0.14
Northwest Africa 8173	Enst achon	5.2650	2.7080	-0.03	0.17	0.41	0.32
LaPaz Icefield 02233	Aubrite	5.1600	2.7400	0.057	0.06	0.44	0.41
Allan Hills A78113	Aubrite	5.1170	2.7510	0.09	0.02	0.45	0.44
Northwest Africa 1617	Acapulcoite	5.0600	1.8500	-0.781	-0.04	-0.45	-0.43
Northwest Africa 6152	Brachinite	4.6500	2.2400	-0.178	-0.45	-0.06	0.17
Northwest Africa 6152	Brachinite	4.6500	2.2300	-0.188	-0.45	-0.07	0.16
Northwest Africa 5400	Achondrite-ung	5.2230	2.7410	0.025	0.12	0.44	0.38
Northwest Africa 8124	LL3	4.7180	2.5680	0.115	-0.38	0.27	0.47
Cumberland Falls	Aubrite	5.1800	2.7600	0.066	0.08	0.46	0.42
Ooldea 014	Achondrite-prim-ung	5.0450	1.8280	-0.795	-0.05	-0.47	-0.44
Pecora Escarpment 91020	EL3	5.2700	2.7440	0.004	0.17	0.44	0.36
Northwest Africa 11807	Winonaite	5.5670	2.3950	-0.5	0.47	0.1	-0.15
Bishopville	Aubrite	5.2900	2.7400	-0.011	0.19	0.44	0.34
Northwest Africa 13735	Winonaite	4.7420	1.9740	-0.492	-0.36	-0.33	-0.14
Allan Hills A78113	Aubrite	5.2200	2.7700	0.056	0.12	0.47	0.41
Northwest Africa 12543	Winonaite	5.5830	2.3450	-0.558	0.48	0.05	-0.21
Lewis Cliff 88180	EH5	5.2950	2.7460	-0.007	0.2	0.45	0.34
Khor Temiki	Aubrite	5.2870	2.7520	0.003	0.19	0.45	0.35
Erg Atouila 003	Achondrite-prim-ung	5.3340	1.8640	-0.91	0.23	-0.44	-0.56
Northwest Africa 12951	Winonaite	4.7300	1.9690	-0.491	-0.37	-0.33	-0.14
Tanezrouft 031	EL5	5.2590	2.7710	0.036	0.16	0.47	0.39

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