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 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
3.1590	0.1200	-1.5480	-1.536
2.9660	0.0040	-1.5620	-1.551
2.2970	0.0130	-1.5320	-1.192	Δ¹⁷O off by 0.34

Nearest neighbors in MBDB (within 0.5 permil):

Name	Class	δ¹⁸O	δ¹⁷O	Δ¹⁷O: calc	Δ δ¹⁸O	Δ δ¹⁷O	Δ Δ¹⁷O
Tafassasset	Achondrite-prim	2.9400	0.1800	-1.362	0.13	0.13	0.06
Northwest Africa 8158	Eucrite	3.0220	0.0000	-1.585	0.21	-0.05	-0.16
Northwest Africa 468	Iron, IAB-ung	3.0100	0.1800	-1.398	0.2	0.13	0.03
Northwest Africa 13754	Lodranite	2.5190	0.0840	-1.237	-0.29	0.04	0.19
Hassi el Biod 002	Pallasite, ungrouped	2.8200	0.3380	-1.141	0.01	0.29	0.29
Northwest Africa 8287	Acapulcoite	2.5850	0.2360	-1.12	-0.22	0.19	0.31
Northwest Africa 6901	Achondrite-prim	2.7700	-0.2500	-1.703	-0.04	-0.3	-0.28
Northwest Africa 6685	Lodranite	2.5000	0.1000	-1.211	-0.31	0.05	0.22
Choteau	Pallasite, ungrouped	2.5020	0.1520	-1.16	-0.31	0.11	0.27
Northwest Africa 6921	CR6	2.7880	-0.2800	-1.742	-0.02	-0.33	-0.32
Northwest Africa 11561	CR6	2.6590	-0.2590	-1.654	-0.15	-0.3	-0.23
Northwest Africa 8287	Acapulcoite	2.9440	0.3560	-1.188	0.14	0.31	0.24
Northwest Africa 6921	CR6	3.1810	-0.0650	-1.733	0.37	-0.11	-0.31
Northwest Africa 12869	Achondrite-prim	3.1810	-0.0720	-1.74	0.37	-0.12	-0.31
Northwest Africa 4478	Lodranite	2.4000	0.1100	-1.149	-0.41	0.06	0.28
Northwest Africa 13754	Lodranite	2.3920	0.1270	-1.128	-0.42	0.08	0.3
Northwest Africa 3250	Achondrite-prim	3.2500	-0.0300	-1.734	0.44	-0.08	-0.31
Northwest Africa 4478	Lodranite	2.4300	0.3000	-0.975	-0.38	0.25	0.45
Choteau	Pallasite, ungrouped	2.3470	0.0670	-1.164	-0.46	0.02	0.26
Northwest Africa 13754	Lodranite	2.3570	-0.0890	-1.325	-0.45	-0.13	0.1
Northwest Africa 2400	Achondrite-ung	3.2700	0.1500	-1.565	0.46	0.1	-0.14
Northwest Africa 8251	Lodranite	2.4280	0.3450	-0.929	-0.38	0.3	0.5
Northwest Africa 8287	Acapulcoite	2.3300	0.1210	-1.101	-0.48	0.08	0.33
Northwest Africa 11561	CR6	2.5060	-0.3440	-1.659	-0.3	-0.39	-0.23

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