Oxygen Isotope Plots

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Meteoritical Bulletin: Oxygen Isotope Plots

Oxygen isotope composition of differentiated achondrites. Data for angrites and HEDs from Greenwood et al. (2005). Data for Martian meteorites from Franchi et al. (1999). EFL: eucrite fractionation line (Greenwood et al., 2005), AFL: angrite fractionation line (Greenwood et al., 2005), MFL: Martian fractionation line (Franchi et al., 1999), TFL: terrestrial fractionation line. M: average value of Martian meteorite analyses from Franchi et al. (1999). E: bulk terrestrial mantle (Mattey et al., 1994). Open squares: HEDs, open triangles: angrites, open circles: Martian meteorites. Δ¹⁷O is linearized using the format of Miller (2002): Δ¹⁷O = 1000 ln (1+ (δ¹⁷O/1000)) – λ1000 ln (1+ ( δ¹⁸O/1000)) where λ = 0.5247.

References:

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)
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., Jambon A. and Buchanan P.C. (2005) Widespread magma oceans on asteroidal bodies in the early solar system. Nature 435, 916-918 (link)
Greenwood R.C., Franchi I.A., Jambon A. and Buchanan P.C. (2005) Widespread magma oceans on asteroidal bodies in the early solar system. Nature 435, 916-918 (link)
Mattey D., Lowry D. and Macpherson C. (1994) Oxygen isotope composition of mantle peridotite. Earth Planet. Sci. Lett. 128, 231-241 (link)
Miller M.F. (2002) Isotopic fractionation and the quantification of 17O anomalies in the three oxygen isotope system: an appraisal and geochemical significance. Geochim. Cosmochim. Acta 66, 1881-1889 (link)

Data summary:

δ¹⁸O	δ¹⁷O	Δ¹⁷O: given	Δ¹⁷O: Miller (2002)	Comment
4.3200	1.1900	-1.0800	-1.075

Nearest neighbors in MBDB (within 0.5 permil):

Name	Class	δ¹⁸O	δ¹⁷O	Δ¹⁷O: calc	Δ δ¹⁸O	Δ δ¹⁷O	Δ Δ¹⁷O
Northwest Africa 4663	Lodranite	4.1250	1.1440	-1.019	-0.2	-0.05	0.06
El Médano 096	Acapulcoite	4.3000	1.4100	-0.845	-0.02	0.22	0.23
Northwest Africa 10132	Achondrite-ung	4.5570	1.2730	-1.116	0.24	0.08	-0.04
Northwest Africa 2210	CH3	4.1100	1.0500	-1.105	-0.21	-0.14	-0.03
Yabrin 003	Acapulcoite	4.0400	1.1300	-0.988	-0.28	-0.06	0.09
Northwest Africa 4663	Lodranite	4.0150	1.2020	-0.903	-0.31	0.01	0.17
Northwest Africa 2627	Acapulcoite	4.5100	1.4700	-0.894	0.19	0.28	0.18
Yamato 980110	Ureilite	4.6000	1.3900	-1.021	0.28	0.2	0.05
Northwest Africa 10074	Acapulcoite	3.9490	1.1760	-0.895	-0.37	-0.01	0.18
Northwest Africa 6592	Lodranite	3.9800	1.0400	-1.047	-0.34	-0.15	0.03
Northwest Africa 2210	CH3	3.9500	1.0700	-1.001	-0.37	-0.12	0.07
Northwest Africa 2627	Acapulcoite	4.5100	1.5600	-0.805	0.19	0.37	0.27
Northwest Africa 8685	Acapulcoite	3.9320	1.0250	-1.037	-0.39	-0.17	0.04
Northwest Africa 10132	Achondrite-ung	4.7020	1.3730	-1.092	0.38	0.18	-0.02
Northwest Africa 6704	Achondrite-ung	3.9220	1.0150	-1.041	-0.4	-0.18	0.03
Northwest Africa 1500	Achondrite-ung	4.5600	1.5800	-0.811	0.24	0.39	0.26
Northwest Africa 6484	Lodranite	4.5420	1.6350	-0.746	0.22	0.45	0.33

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