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
5.3280	2.2720	-0.5410	-0.499
4.8550	2.0160	-0.5480	-0.509
5.1960	2.1960	-0.5480	-0.506

Nearest neighbors in MBDB (within 0.5 permil):

Name	Class	δ¹⁸O	δ¹⁷O	Δ¹⁷O: calc	Δ δ¹⁸O	Δ δ¹⁷O	Δ Δ¹⁷O
Northwest Africa 6448	Winonaite	5.1340	2.1670	-0.503	0.01	0.01	0
Northwest Africa 13917	Winonaite	5.1070	2.1790	-0.477	-0.02	0.02	0.03
Northwest Africa 6448	Winonaite	5.1550	2.1660	-0.515	0.03	0	-0.01
Northwest Africa 12543	Winonaite	5.1180	2.1200	-0.541	-0.01	-0.04	-0.04
Northwest Africa 10851	Winonaite	5.0780	2.1490	-0.492	-0.05	-0.01	0.01
Northwest Africa 12951	Winonaite	5.0350	2.1190	-0.499	-0.09	-0.04	0.01
Northwest Africa 13917	Winonaite	5.2360	2.2320	-0.491	0.11	0.07	0.01
Northwest Africa 10851	Winonaite	5.2420	2.2240	-0.502	0.12	0.06	0
Northwest Africa 1457	Winonaite	5.1000	2.3000	-0.352	-0.03	0.14	0.15
Northwest Africa 2251	Howardite	5.2000	2.3000	-0.404	0.07	0.14	0.1
Grapevine Mesa	CBa	5.2830	2.0910	-0.656	0.16	-0.07	-0.15
Northwest Africa 13917	Winonaite	4.9590	2.0550	-0.524	-0.17	-0.11	-0.02
Errachidia 004	Winonaite	5.2760	2.2960	-0.448	0.15	0.13	0.06
Old Homestead 003	Howardite	5.0200	2.3700	-0.24	-0.11	0.21	0.26
Northwest Africa 11729	Eucrite-an	4.9340	2.3010	-0.265	-0.19	0.14	0.24
Northwest Africa 6023	Brachinite-an	5.1100	2.4020	-0.255	-0.02	0.24	0.25
Northwest Africa 10637	Brachinite	5.0480	2.4020	-0.223	-0.08	0.24	0.28
Northwest Africa 10602	Eucrite-melt breccia	4.9520	2.3490	-0.226	-0.17	0.19	0.28
Northwest Africa 12951	Winonaite	4.8870	2.0490	-0.492	-0.24	-0.11	0.01
Old Homestead 003	Howardite	4.8800	2.3000	-0.238	-0.25	0.14	0.27
El Médano 395	Brachinite	4.8970	2.3290	-0.217	-0.23	0.17	0.29
Northwest Africa 12532	Brachinite	4.9080	2.3450	-0.207	-0.22	0.18	0.3
Northwest Africa 6023	Brachinite-an	5.1620	2.4450	-0.239	0.04	0.28	0.27
Northwest Africa 12532	Brachinite	5.1190	2.4560	-0.206	-0.01	0.29	0.3
Zag (b)	Winonaite	4.8400	2.0600	-0.457	-0.29	-0.1	0.05
Northwest Africa 6023	Brachinite-an	4.8380	2.2690	-0.247	-0.29	0.11	0.26
Northwest Africa 1617	Acapulcoite	5.0600	1.8500	-0.781	-0.07	-0.31	-0.28
Grapevine Mesa	CBa	4.9980	2.4560	-0.143	-0.13	0.29	0.36
Northwest Africa 6369	Iron, IAB complex	5.3900	2.3500	-0.453	0.26	0.19	0.05
Allan Hills 88046	EH3	4.9050	2.4200	-0.131	-0.22	0.26	0.37
Ooldea 014	Achondrite-prim-ung	5.0450	1.8280	-0.795	-0.08	-0.33	-0.29
Northwest Africa 6023	Brachinite-an	5.2260	2.4910	-0.227	0.1	0.33	0.28
Northwest Africa 7904	Brachinite	4.7810	2.2100	-0.276	-0.35	0.05	0.23
Jiddat al Harasis 556	Howardite	4.9800	2.4800	-0.11	-0.15	0.32	0.39
Kota-Kota	EH3	5.1200	2.5200	-0.142	-0.01	0.36	0.36
Northwest Africa 10851	Winonaite	5.4380	2.3450	-0.483	0.31	0.18	0.02
Northwest Africa 7605	Brachinite	4.8220	2.3700	-0.137	-0.3	0.21	0.37
MacAlpine Hills 88136	EL3	5.0010	2.5100	-0.091	-0.13	0.35	0.41
Northwest Africa 3151	Brachinite	4.8600	2.4200	-0.107	-0.27	0.26	0.4
Thiel Mountains 07014	Eucrite	5.2700	2.5100	-0.23	0.14	0.35	0.27
Silistra	Achondrite-ung	5.3000	2.5000	-0.256	0.17	0.34	0.25
Northwest Africa 4042	Achondrite-ung	5.1780	2.5390	-0.154	0.05	0.38	0.35
Northwest Africa 4929	Brachinite	5.3300	2.4900	-0.282	0.2	0.33	0.22
Northwest Africa 2904	Eucrite-pmict	4.7400	2.1300	-0.335	-0.39	-0.03	0.17
Happy Canyon	EL6/7	4.9860	2.5260	-0.067	-0.14	0.36	0.44
Northwest Africa 10637	Brachinite	5.2730	2.5260	-0.216	0.15	0.36	0.29
Northwest Africa 2627	Acapulcoite	4.9300	1.8200	-0.744	-0.2	-0.34	-0.24
South Oman	EH4/5	5.4100	2.4400	-0.373	0.28	0.28	0.13
Northwest Africa 11807	Winonaite	5.4870	2.3600	-0.493	0.36	0.2	0.01
Northwest Africa 10637	Brachinite	4.7940	2.4050	-0.088	-0.33	0.24	0.42
Yamato 691	EH3	4.8300	2.4600	-0.052	-0.3	0.3	0.45
Mayo Belwa	Aubrite	4.9530	2.5470	-0.029	-0.17	0.39	0.48
Al Huwaysah 010	Achondrite-ung	4.7300	2.3100	-0.15	-0.4	0.15	0.35
Northwest Africa 13735	Winonaite	4.7420	1.9740	-0.492	-0.38	-0.19	0.01
Bishopville	Aubrite	5.0850	2.5870	-0.057	-0.04	0.43	0.45
Northwest Africa 8059	LL3.05	4.7020	2.2280	-0.217	-0.42	0.07	0.29
Norton County	Aubrite	4.9790	2.5720	-0.017	-0.15	0.41	0.49
Northwest Africa 5400	Achondrite-ung	4.8800	2.5250	-0.013	-0.25	0.36	0.49
Dhofar 1983	Lunar (feldsp. breccia)	5.1000	2.6000	-0.052	-0.03	0.44	0.45
Northwest Africa 12951	Winonaite	4.7300	1.9690	-0.491	-0.4	-0.19	0.01
Northwest Africa 10423	Eucrite-cm	4.6900	2.2300	-0.209	-0.44	0.07	0.3
Northwest Africa 2627	Acapulcoite	4.9600	1.7500	-0.829	-0.17	-0.41	-0.32
Ramlat Fasad 531	Winonaite	5.5060	2.4000	-0.463	0.38	0.24	0.04
Pesyanoe	Aubrite	4.7890	2.4570	-0.033	-0.34	0.3	0.47
Bustee	Aubrite	4.8300	2.5100	-0.002	-0.3	0.35	0.5
Northwest Africa 2656	Acapulcoite	5.0500	1.7100	-0.916	-0.08	-0.45	-0.41
Northwest Africa 8173	Enst achon	5.0130	2.6050	-0.002	-0.11	0.44	0.5
Northwest Africa 10497	Brachinite	4.6700	2.2200	-0.208	-0.46	0.06	0.3
Ooldea 014	Achondrite-prim-ung	5.5510	1.9820	-0.905	0.42	-0.18	-0.4
Northwest Africa 2340	CR2	5.3700	1.7700	-1.022	0.24	-0.39	-0.52
Elephant Moraine 90033	Aubrite	5.0260	2.6190	0.005	-0.1	0.46	0.51
Lewis Cliff 88714	EL6	5.0180	2.6180	0.009	-0.11	0.46	0.51
Norton County	Aubrite	5.0200	2.6200	0.01	-0.11	0.46	0.51
Northwest Africa 2656	Acapulcoite	5.0400	1.6900	-0.931	-0.09	-0.47	-0.43
Zakłodzie	Enst achon-ung	4.8600	2.5600	0.033	-0.27	0.4	0.54
Northwest Africa 6152	Brachinite	4.6500	2.2300	-0.188	-0.48	0.07	0.32
Northwest Africa 6152	Brachinite	4.6500	2.2400	-0.178	-0.48	0.08	0.33
Allan Hills A78113	Aubrite	4.8100	2.5300	0.029	-0.32	0.37	0.53
Northwest Africa 7904	Brachinite	4.9990	2.6340	0.035	-0.13	0.47	0.54
Northwest Africa 12543	Winonaite	5.5830	2.3450	-0.558	0.46	0.18	-0.05
Itqiy	EH7-an	4.8000	2.5300	0.034	-0.33	0.37	0.54
Northwest Africa 4741	Achondrite-ung	4.9900	2.6400	0.045	-0.14	0.48	0.55
Peña Blanca Spring	Aubrite	5.2670	2.6390	-0.1	0.14	0.48	0.4
Qingzhen	EH3	4.7000	2.4200	-0.024	-0.43	0.26	0.48
Northwest Africa 11807	Winonaite	5.5670	2.3950	-0.5	0.44	0.23	0
Northwest Africa 4537	Aubrite	5.0210	2.6500	0.039	-0.11	0.49	0.54

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