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
6.2600	3.2500	-0.0620	-0.005	Δ¹⁷O off by 0.057
6.0500	3.2100	0.0020	0.064	Δ¹⁷O off by 0.062
6.4200	3.3600	-0.0380	0.022	Δ¹⁷O off by 0.06
6.2200	3.2300	-0.0630	-0.004	Δ¹⁷O off by 0.059
6.1700	3.2400	-0.0280	0.032	Δ¹⁷O off by 0.06
6.6100	3.4100	-0.0860	-0.027	Δ¹⁷O off by 0.059
5.8200	3.0300	-0.0500	0.004	Δ¹⁷O off by 0.054

Nearest neighbors in MBDB (within 0.5 permil):

Name	Class	δ¹⁸O	δ¹⁷O	Δ¹⁷O: calc	Δ δ¹⁸O	Δ δ¹⁷O	Δ Δ¹⁷O
Pillistfer	EL6	6.2100	3.2500	0.021	-0.01	0	0.01
Ramlat Fasad 532	Lunar (gabbro)	6.2050	3.2490	0.022	-0.02	0	0.01
Galb Inal	Lunar	6.1980	3.2380	0.015	-0.02	-0.01	0
Dhofar 1436	Lunar	6.2440	3.2860	0.039	0.02	0.04	0.03
Kota-Kota	EH3	6.2210	3.1920	-0.043	-0	-0.06	-0.05
Northwest Africa 12592	Lunar (frag. breccia)	6.1740	3.2170	0.007	-0.05	-0.03	-0.01
Northwest Africa 11444	Lunar (melt breccia)	6.2800	3.2800	0.014	0.06	0.03	0
Northwest Africa 12980	Lunar (melt breccia)	6.2890	3.2940	0.024	0.07	0.05	0.01
Ghadduwah 001	Lunar (anorth)	6.1520	3.1980	-0.001	-0.07	-0.05	-0.01
Northwest Africa 12592	Lunar (frag. breccia)	6.3330	3.2660	-0.027	0.11	0.02	-0.04
Northwest Africa 7214	EH-melt rock	6.3270	3.2960	0.006	0.11	0.05	-0.01
Northwest Africa 12593	Lunar (frag. breccia)	6.1060	3.2030	0.028	-0.12	-0.04	0.02
Northwest Africa 4799	EH-melt rock	6.3270	3.3310	0.041	0.11	0.08	0.03
Northwest Africa 12821	EL3	6.0810	3.2540	0.092	-0.14	0.01	0.08
Abee	EH4	6.0800	3.2700	0.108	-0.14	0.02	0.1
Khairpur	EL6	6.0890	3.1730	0.007	-0.13	-0.07	-0.01
Northwest Africa 12821	EL3	6.0910	3.1680	0.001	-0.13	-0.08	-0.01
Aridal 010	Brachinite	6.1700	3.1000	-0.108	-0.05	-0.15	-0.12
Northwest Africa 12821	EL3	6.0680	3.2160	0.061	-0.15	-0.03	0.05
Northwest Africa 12593	Lunar (frag. breccia)	6.3610	3.3280	0.02	0.14	0.08	0.01
Qingzhen	EH3	6.0800	3.1600	-0.002	-0.14	-0.09	-0.01
Indarch	EH4	6.0560	3.2750	0.126	-0.17	0.03	0.11
Northwest Africa 4416	EL6	6.3850	3.3420	0.022	0.16	0.09	0.01
Northwest Africa 4415	EL6	6.3880	3.3400	0.018	0.17	0.09	0.01
Northwest Africa 8785	EL3	6.0420	3.1800	0.038	-0.18	-0.07	0.03
Northwest Africa 12821	EL3	6.0230	3.2120	0.08	-0.2	-0.04	0.07
Northwest Africa 12821	EL3	6.0490	3.3590	0.214	-0.17	0.11	0.2
Northwest Africa 11729	Eucrite-an	6.3120	3.0620	-0.22	0.09	-0.19	-0.23
Mount DeWitt 12007	Lunar	6.0500	3.1300	-0.016	-0.17	-0.12	-0.03
Northwest Africa 8061	H3.10	6.3200	3.4340	0.148	0.1	0.19	0.14
Northwest Africa 12821	EL3	6.4020	3.3670	0.038	0.18	0.12	0.03
Northwest Africa 11962	Lunar	6.0300	3.1400	0.004	-0.19	-0.11	-0.01
Sayh al Uhaymir 188	EL4	5.9900	3.2130	0.098	-0.23	-0.03	0.09
Pillistfer	EL6	6.0390	3.0990	-0.041	-0.18	-0.15	-0.05
Abee	EH4	6.3180	3.4730	0.188	0.1	0.23	0.18
Hvittis	EL6	6.0270	3.0820	-0.052	-0.19	-0.17	-0.06
Northwest Africa 11071	EH-melt rock	5.9960	3.1200	0.002	-0.23	-0.13	-0.01
Graves Nunataks 06128	Achondrite-ung	6.0100	3.0500	-0.075	-0.21	-0.2	-0.09
Graves Nunataks 06128	Achondrite-ung	6.0100	3.0400	-0.085	-0.21	-0.21	-0.1
Northwest Africa 3136	Lunar (basalt)	5.9600	3.1000	0.001	-0.26	-0.15	-0.01
Northwest Africa 7611	Lunar	5.9310	3.1610	0.077	-0.29	-0.09	0.06
Kalahari 008	Lunar (anorth)	6.5200	3.3200	-0.07	0.3	0.07	-0.08
Saint-Sauveur	EH5	5.9300	3.1300	0.046	-0.29	-0.12	0.03
Catalina 400	EH5	6.0520	2.9820	-0.165	-0.17	-0.27	-0.18
Northwest Africa 13531	Lunar (feldsp. breccia)	5.9330	3.0830	-0.002	-0.29	-0.16	-0.01
Northwest Africa 10989	Lunar	6.5100	3.4200	0.035	0.29	0.17	0.02
North West Forrest (E6)	EL6	5.8810	3.1490	0.091	-0.34	-0.1	0.08
Northwest Africa 12997	Lunar (troct)	5.8800	3.0745	0.017	-0.34	-0.17	0
Northwest Africa 12821	EL3	5.8920	3.0450	-0.019	-0.33	-0.2	-0.03
Jajh deh Kot Lalu	EL6	5.8860	3.0510	-0.01	-0.34	-0.2	-0.02
Northwest Africa 12821	EL3	5.8460	3.1190	0.079	-0.38	-0.13	0.07
Willaroy	H3.8-an	5.8700	3.4500	0.398	-0.35	0.2	0.39
Ghadduwah 001	Lunar (anorth)	5.8520	3.0420	-0.001	-0.37	-0.21	-0.01
Northwest Africa 7135	Chondrite-ung	6.0720	3.6490	0.492	-0.15	0.4	0.48
Northwest Africa 3136	Lunar (basalt)	5.8300	3.0600	0.028	-0.39	-0.19	0.02
St. Mark's	EH5	5.7990	3.1270	0.112	-0.42	-0.12	0.1
Burnwell	H4-an	5.9700	3.6100	0.506	-0.25	0.36	0.49
Northwest Africa 4024	Winonaite	6.6000	3.0100	-0.422	0.38	-0.24	-0.43
Dar al Gani 1031	EL4	6.6200	3.4700	0.028	0.4	0.22	0.02
Ghadduwah 001	Lunar (anorth)	5.8100	3.0380	0.017	-0.41	-0.21	0
Northwest Africa 13411	OC5-an	6.4330	3.6660	0.321	0.21	0.42	0.31
Northwest Africa 8785	EL3	5.8200	2.9960	-0.03	-0.4	-0.25	-0.04
Northwest Africa 10769	Chondrite-ung	5.9500	3.6500	0.556	-0.27	0.4	0.54
Arabian Peninsula 007	Lunar (frag. breccia)	6.6460	3.4840	0.028	0.42	0.24	0.02
Errachidia 004	Winonaite	6.6550	3.0220	-0.439	0.43	-0.23	-0.45
Sierra Gorda 009	Chondrite-ung	6.1690	3.7360	0.528	-0.05	0.49	0.52
Dhofar 1015	EH4	5.7470	3.1160	0.128	-0.47	-0.13	0.12
Northwest Africa 14340	Lunar (feldsp. breccia)	5.7920	3.0030	-0.009	-0.43	-0.24	-0.02
Northwest Africa 8785	EL3	5.8490	2.9220	-0.119	-0.37	-0.33	-0.13

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