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 ordinary and R chondrites. Data for ordinary chondrites from Clayton et al. (1991). Data for R chondrites from: Weisberg et al. (1991), Schultze et al. (1994), Jackel et al. (1996),Kallemeyn et al. (1996), Weber et al. (1997), Bischoff et al. (1998), McBride et al. (2003). Entry for NWA 1668, Met. Bull. 88. Δ¹⁷O calculated as: Δ¹⁷O = δ¹⁷O – 0.52δ¹⁸O

References:

Bischoff A., Weber D., Bartoschewitz R., Clayton R.N., Mayeda T.K., Schultz L. Spettel B. and Weber H. W. (1998) Characterization of the Rumuruti chondrite regolith breccia Hughes 030 (R3-6) and implications fot the occurrence of unequilibrated lithologies on the R-chondrite parent body. Meteoritics & Planetary Science 33 supplement, A15 (abstract). (link)
Clayton R.N., Mayeda T.K., Goswami J.N. and Olsen E.J. (1991) Oxygen isotope studies of ordinary chondrites. Geochim. Cosmochim. Acta 55, 2317-2337. (link)
Jackel A., Bischoff A., Clayton R.N. and Mayeda T.K. (1996) Dar al Gani 013- A new Saharan Rumuruti chondrite (R3-6) with highly unequilibrated type 2 fragments. Lunar Planet. Sci. Conf. 27, 595-596 (abstract) (link)
Kallemeyn G. W., Rubin A.E. and Wasson J.T. (1996) The compositional classification of chondrites: VII. The R chondrite group. Geochim. Cosmochim. Acta 60, 2243-2256 (link)
McBride K., McCoy T. and Welzenbach L. (2003) Petrographic description of LAP 02238. Antarctic Meteorite Newsletter 27, No. 1, 18 (link)
Schulze H., Bischoff A., Palme H., Spettel B., Dreibus G. And Otto J. (1994) Mineralogy and chemistry of Rumuruti: The first meteorite fall of the new R chondrite group. Meteoritics 29, 275-286 (link)
Weber D., Schultz L., Weber H.W., Clayton R.N., Mayeda T.K. and Bischoff A. (1997) Hammadah al Hamra 119- A new, unbrecciated Saharan Rumuruti chondrite. Lunar Planet. Sci. Conf. 28, 1511-1512 (abstract) (link)
Weisberg M.K. Prinz M., Kojima H., Yanai K., Clayton R.N. and Mayeda T.K. (1991) The Carlisle Lakes-type chondrites – A new grouplet with high Delta ¹⁷O and evidence for nebular oxidataion. Geochim. Cosmochim. Acta 55, 2657-2669 (link)

Data summary:

δ¹⁸O	δ¹⁷O	Δ¹⁷O: given	Δ¹⁷O: linear	Comment
5.0700	5.5200	2.8800	2.884

Nearest neighbors in MBDB (within 0.5 permil):

Name	Class	δ¹⁸O	δ¹⁷O	Δ¹⁷O: calc	Δ δ¹⁸O	Δ δ¹⁷O	Δ Δ¹⁷O
Rumuruti	R3.8-6	5.0700	5.5200	2.884	0	0	0
Northwest Africa 2897	R3-6	5.0600	5.5420	2.911	-0.01	0.02	0.03
Sierra Gorda 010	R4-an	4.9320	5.5940	3.029	-0.14	0.07	0.15
Sierra Gorda 010	R4-an	5.0050	5.6840	3.081	-0.07	0.16	0.2
Northwest Africa 7514	R5	5.0400	5.7400	3.119	-0.03	0.22	0.24
Carlisle Lakes	R3.8	5.3400	5.5000	2.723	0.27	-0.02	-0.16
Northwest Africa 1668	R5	4.8500	5.3200	2.798	-0.22	-0.2	-0.09
Northwest Africa 6236	R4	4.7000	5.5300	3.086	-0.37	0.01	0.2
LaPaz Icefield 04840	R6	4.7600	5.7600	3.285	-0.31	0.24	0.4
Dhofar 1671	R3-6	4.7130	5.3540	2.903	-0.36	-0.17	0.02
Northwest Africa 6959	R5	4.6550	5.3630	2.942	-0.42	-0.16	0.06

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