Ophiolites oxygen isotopes

Barnicoat A. C. and Cartwright 1. (1997) Focused fluid flow during subduction oxygen isotope data from high pressure ophiolites of the western Alps. Earth Planet. Set Lett. 132, 53-61. 

Gregory R. T. and Taylor H. P., Jr. (1981) An oxygen isotope profile in a section of Cretaceous oceanic crast, Samail ophiolite, Oman evidence for buffering of the oceans by deep (> 5 km) seawater-hydrothermal circulation at midocean ridges. J. Geophys. Res. 86, 2737-2755. 

Schiffman P. and Smith B. M. (1988) Petrology and oxygen isotope geochemistry of a fossil seawater hydrothermal system within the Solea Graben, northern Troodos ophiolite, Cyprus. J. Geophys. Res. 93, 4612-4624. 

Muehlenbachs K. (2001) Ophiolites as faithful records of the oxygen isotope ratio of ancient seawater. Abstr. Progr.— Geol. Soc. Am. 33(6), 225. 

MuehlenbachsK., Fumes H., Fonneland H. C., and HellevangB (2003) Ophiolites as faithful records of the oxygen isotope ratio of ancient seawater the Solund-Stavfjord Ophiolite Complex as a Late Ordovician example. In Ophiolites in Earth History (eds. Y. Dilek and P. T. Robinson). Geol. Soc. of London, Spec. Publ. (in press). 

Figure 7. (a) Idealized oxygen isotope profile of altered, sediment-covered oceanic crust based on Gregory and Taylor s (1981) study of the Ibra section of the Oman ophiolite and data for marine sediments taken from data sources cited in the text. The vertical black bar marks the range in 5 0 t ical of mantle peridotites the vertical white bar marks the range in 5 0 typical of fresh oceanic basalts, (b) VMues of typical of various major rock types in the Earth s cmst. Data sources are listed in the text. These ranges emphasize typical, representative values and purposefully exclude extreme examples of many rock types. The isotopic composition of most mantle peridotites (Fig. 8) and all NMORBs (Fig. 9) spans a range equal to the thickness of the vertical black hne. 

Lundstrom CC, Chaussidon M, Hsui AT, Keleman P, Zimmermann M (2005) Observations of Li isotope variations in the Trinity ophiolite evidence for isotope fractionation by diffusion during mantle melting, Geochim Cosmochim Acta 69 735-751 Luz B, Barkan E (2000) Assessment of oceanic productivity with the triple-isotope composition of dissolved oxygen. Science 288 2028-2031... 

---