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
5.3300	2.4900	-0.3000	-0.282

Nearest neighbors in MBDB (within 0.5 permil):

Name	Class	δ¹⁸O	δ¹⁷O	Δ¹⁷O: calc	Δ δ¹⁸O	Δ δ¹⁷O	Δ Δ¹⁷O
Silistra	Achondrite-ung	5.3000	2.5000	-0.256	-0.03	0.01	0.03
Thiel Mountains 07014	Eucrite	5.2700	2.5100	-0.23	-0.06	0.02	0.05
Northwest Africa 10637	Brachinite	5.2730	2.5260	-0.216	-0.06	0.04	0.07
Northwest Africa 6023	Brachinite-an	5.2260	2.4910	-0.227	-0.1	0	0.06
Northwest Africa 6369	Iron, IAB complex	5.3900	2.3500	-0.453	0.06	-0.14	-0.17
Northwest Africa 4042	Achondrite-ung	5.1780	2.5390	-0.154	-0.15	0.05	0.13
Northwest Africa 6023	Brachinite-an	5.1620	2.4450	-0.239	-0.17	-0.05	0.04
Northwest Africa 10851	Winonaite	5.4380	2.3450	-0.483	0.11	-0.15	-0.2
Northwest Africa 11807	Winonaite	5.4870	2.3600	-0.493	0.16	-0.13	-0.21
Northwest Africa 8059	LL3.05	5.2770	2.6880	-0.056	-0.05	0.2	0.23
Northwest Africa 13432	Winonaite	5.3280	2.2720	-0.499	-0	-0.22	-0.22
Northwest Africa 4518	Achondrite-ung	5.4700	2.6600	-0.184	0.14	0.17	0.1
Northwest Africa 8173	Enst achon	5.2650	2.7080	-0.03	-0.07	0.22	0.25
Northwest Africa 2251	Howardite	5.2000	2.3000	-0.404	-0.13	-0.19	-0.12
Northwest Africa 7388	Brachinite	5.4130	2.7050	-0.11	0.08	0.22	0.17
Northwest Africa 6077	Achondrite-ung	5.1800	2.6670	-0.027	-0.15	0.18	0.26
Northwest Africa 6023	Brachinite-an	5.1100	2.4020	-0.255	-0.22	-0.09	0.03
Dhofar 1983	Lunar (feldsp. breccia)	5.1000	2.6000	-0.052	-0.23	0.11	0.23
Northwest Africa 11807	Winonaite	5.5670	2.3950	-0.5	0.24	-0.1	-0.22
Dhofar 1441	Achondrite-ung	5.5080	2.6750	-0.189	0.18	0.19	0.09
Northwest Africa 7904	Brachinite	5.1660	2.6940	0.008	-0.16	0.2	0.29
Silistra	Achondrite-ung	5.5500	2.6400	-0.246	0.22	0.15	0.04
MacAlpine Hills 88104	Lunar (anorth)	5.5000	2.7000	-0.16	0.17	0.21	0.12
Northwest Africa 5400	Achondrite-ung	5.2230	2.7410	0.025	-0.11	0.25	0.31
Northwest Africa 10851	Winonaite	5.2420	2.2240	-0.502	-0.09	-0.27	-0.22
Northwest Africa 11729	Eucrite-an	5.5400	2.6800	-0.201	0.21	0.19	0.08
Northwest Africa 6172	Achondrite-ung	5.3500	2.7800	-0.002	0.02	0.29	0.28
Northwest Africa 12543	Winonaite	5.5830	2.3450	-0.558	0.25	-0.15	-0.28
Northwest Africa 10637	Brachinite	5.0480	2.4020	-0.223	-0.28	-0.09	0.06
Northwest Africa 1457	Winonaite	5.1000	2.3000	-0.352	-0.23	-0.19	-0.07
Elephant Moraine 87521	Lunar (basalt)	5.3900	2.7900	-0.013	0.06	0.3	0.27
Northwest Africa 7904	Brachinite	5.3480	2.7970	0.016	0.02	0.31	0.3
Northwest Africa 13432	Winonaite	5.1960	2.1960	-0.506	-0.13	-0.29	-0.22
Northwest Africa 5400	Achondrite-ung	5.0610	2.6810	0.049	-0.27	0.19	0.33
Old Homestead 003	Howardite	5.0200	2.3700	-0.24	-0.31	-0.12	0.04
Northwest Africa 8173	Enst achon	5.0130	2.6050	-0.002	-0.32	0.12	0.28
Northwest Africa 5548	Achondrite-ung	5.0800	2.7200	0.078	-0.25	0.23	0.36
LaPaz Icefield 02205	Lunar (basalt)	5.6000	2.7000	-0.212	0.27	0.21	0.07
Northwest Africa 4537	Aubrite	5.0210	2.6500	0.039	-0.31	0.16	0.32
Jiddat al Harasis 556	Howardite	4.9800	2.4800	-0.11	-0.35	-0.01	0.17
Northwest Africa 5885	Aubrite	5.3350	2.8490	0.075	0	0.36	0.36
Northwest Africa 7904	Brachinite	4.9990	2.6340	0.035	-0.33	0.14	0.32
Northwest Africa 6448	Winonaite	5.1550	2.1660	-0.515	-0.18	-0.32	-0.23
Northwest Africa 4741	Achondrite-ung	4.9900	2.6400	0.045	-0.34	0.15	0.33
Northwest Africa 6448	Winonaite	5.1340	2.1670	-0.503	-0.2	-0.32	-0.22
Northwest Africa 5548	Achondrite-ung	5.0000	2.6900	0.09	-0.33	0.2	0.37
Abar al' Uj 012	Lunar	5.4600	2.8600	0.021	0.13	0.37	0.3
Northwest Africa 10602	Eucrite-melt breccia	4.9520	2.3490	-0.226	-0.38	-0.14	0.06
Northwest Africa 6065	Achondrite-ung	5.5580	2.8300	-0.06	0.23	0.34	0.22
Northwest Africa 13304	Aubrite	5.5110	2.8680	0.002	0.18	0.38	0.28
Northwest Africa 6424	Achondrite-ung	5.4600	2.8900	0.051	0.13	0.4	0.33
Dar al Gani 1037	Martian (shergottite)	5.2900	2.9100	0.159	-0.04	0.42	0.44
Northwest Africa 10851	Winonaite	5.0780	2.1490	-0.492	-0.25	-0.34	-0.21
Northwest Africa 12543	Winonaite	5.1180	2.1200	-0.541	-0.21	-0.37	-0.26
Northwest Africa 11807	Winonaite	5.7580	2.4770	-0.517	0.43	-0.01	-0.24
Northwest Africa 2828	EL-melt rock	5.5000	2.8900	0.03	0.17	0.4	0.31
Northwest Africa 11729	Eucrite-an	4.9340	2.3010	-0.265	-0.4	-0.19	0.02
Northwest Africa 5400	Achondrite-ung	4.8800	2.5250	-0.013	-0.45	0.03	0.27
Northwest Africa 5885	Aubrite	5.5850	2.8750	-0.029	0.26	0.39	0.25
El Médano 395	Brachinite	4.8970	2.3290	-0.217	-0.43	-0.16	0.06
Dhofar 622	H4-an	5.1500	2.9200	0.242	-0.18	0.43	0.52
Northwest Africa 6065	Achondrite-ung	5.5980	2.8730	-0.038	0.27	0.38	0.24
Northwest Africa 2828	EL-melt rock	5.5600	2.9000	0.009	0.23	0.41	0.29
Northwest Africa 12951	Winonaite	5.0350	2.1190	-0.499	-0.3	-0.37	-0.22
Northwest Africa 3151	Brachinite	4.8600	2.4200	-0.107	-0.47	-0.07	0.17
Northwest Africa 12241	Martian (shergottite)	5.0920	2.9070	0.259	-0.24	0.42	0.54
Northwest Africa 7388	Brachinite	5.6350	2.8620	-0.068	0.31	0.37	0.21
Northwest Africa 6572	Achondrite-ung	5.6190	2.8810	-0.041	0.29	0.39	0.24
Northwest Africa 6077	Achondrite-ung	5.5360	2.9320	0.053	0.21	0.44	0.33
Old Homestead 003	Howardite	4.8800	2.3000	-0.238	-0.45	-0.19	0.04

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