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Oxygen isotope thermometry

Clayton RN, Epstein S (1961) The use of oxygen isotopes in high-temperature geological thermometry. J Geol 69 447-452... [Pg.22]

One of the main applications of hydrogen and oxygen isotope thermometry in geochemistry is the estimation of the reservoir temperatures of active geothermal systems or the evaluation of the ruling T conditions during deposition or alter-... [Pg.785]

Farquhar J, Thiemens MH (2000) The oxygen cycle of the Martian atmosphere-regoUth system secondary phases in Nakhla and Lafayette. J Geophys Res 105 11991-11998 Farquhar J, Chacko T, Ellis DJ (1996) Preservation of oxygen isotopic compositions in granuhtes from Northwestern Canada and Enderby Land, Antarctica implications for high-temperature isotopic thermometry. Contr Miner Petrol 125 213-224 Farquhar J, Thiemens MH, Jackson T (1998) Atmosphere-surface interactions on Mars mea-... [Pg.242]

Kyser TK, O Neil JR, Carmichael ISE (1981) Oxygen isotope thermometry of basic lavas and mantle nodules. Contrib Miner Petrol 77 11-23... [Pg.255]

Ni H. and Zhang Y. (2003) Oxygen isotope thermometry and speedometry. Eos 84, E1530. [Pg.611]

The degree of equilibrium isotopic fractionation among phases depends on temperature, so the isotopic compositions of co-existing phases can be used for thermometry. Oxygen is widely used in this way. For example, Clayton and Mayeda (1984) found that the oxygen isotopic compositions of calcite and phyllosilicates from Murchison lie on a mass-dependent fractionation line and differ in 6180 by 22%o. This difference requires a temperature of around 0 °C, which is interpreted to be the temperature of aqueous alteration on the Murchison parent asteroid. Similar measurements for Cl chondrites indicate that aqueous alteration for these meteorites occurred at higher temperature, 50-150 °C (Clayton and Mayeda, 1999). [Pg.221]

Clayton, R. N. Oxygen Isotope Geochemistry Thermometry of Meta-morphic Rodes. In Studies in Analytical Geochemistry. Roy. Soc. Can. Spec. Publ. No. 6, S. 42—57. University of Toronto Press 1963. [Pg.70]

During metamorphism and recrystallization, oxygen isotopes are redistributed among mineral phases, according to the mass-dependent equilibrium fractionations corresponding to the peak metamorphic temperature. The measured mineral-pair fractionations (usually for major minerals olivine, pyroxene, and feldspar) can then be used for metamorphic thermometry, yielding temperatures of 600 °C for an L4 chondrite, and 850 50 °C for several type-5 and type-6 chondrites (Clayton et al., 1991). Isotopic equilibration, even in type-6 chondrites, involves oxygen atom transport only over distances of a few millimeters (Olsen et al., 1981). [Pg.139]

Bindeman I. N. and Valley J. W. (2002) Oxygen isotope study of the long valley magma system, California isotope thermometry and convection in large silicic magma bodies. Contrib. Mineral. Petrol. 144, 185-205. [Pg.1451]

Recent years have seen the development of foram Mg/Ca thermometry (Nurnberg, 1995 Nurnberg et al., 1996 Lea et al., 1999 Elderfield and Ganssen, 2000 Chapter 6.14) and its use to separate the seawater and temperature components of the marine oxygen isotope record (Elderfield and Ganssen, 2000 Lea et al., 2000, 2002). [Pg.3205]

Figure 10 Comparisons of the direct sea-level record (thick gray trace from Figures 5-8), the sea-level record from the top-center panel of Figure 9 (finely dashed line between 130 kyr and present Cutler et al., 2003), a sea-level record based on subtraction of the temperature component (using Mg/Ca thermometry) from a planktonic marine oxygen isotope record (solid black trace Lea et al., 2002), and a sea-level record based on the separation of oxygen isotope components from the record of variations in atmospheric O2... Figure 10 Comparisons of the direct sea-level record (thick gray trace from Figures 5-8), the sea-level record from the top-center panel of Figure 9 (finely dashed line between 130 kyr and present Cutler et al., 2003), a sea-level record based on subtraction of the temperature component (using Mg/Ca thermometry) from a planktonic marine oxygen isotope record (solid black trace Lea et al., 2002), and a sea-level record based on the separation of oxygen isotope components from the record of variations in atmospheric O2...
The original application of oxygen isotope thermometry. The thermal history (top) of the surroundings in South Carolina, USA, during the Cretaceous period as recorded by oxygen isotope changes (bottom) as a function of shell radius in the PeeDee belemnite (Urey et a/., 1951). [Pg.144]

There are a number of advantages of foraminiferal Mg/Ca thermometry over other palaeotem-perature proxies (Barker et al. 2005). Firstly, as discussed above, foraminiferal 8 0 is additionally controlled by the oxygen isotope composition of... [Pg.12]

Anderson AT 11, Clayton RN, Mayeda TK (1971) Oxygen isotope thermometry of mafic igneous rocks. J Geol 79 715-729... [Pg.50]

Farquhar J, Chacko T, Frost BR (1993) Strategies for high-temperature oxygen isotope thermometry A worked example from the Laramie Anorthosite Complex, Wyoming USA Earth Planet Sci Lett 117 479-492... [Pg.177]

Kurz MD (1991) Noble gas isotopes in oceanic basalts controversial constraints on mantle models. In Short Course Handbook on Applications of Radiogenic Isotope Systems to Problems in Geology. L Heamar, JN Ludden (eds) Mineral Assoc Canada, p 259-286 KyserTK (1986) Stable isotope variations in the mantle. Rev Mineral 16 141-164 Kyser TK, O Neil JR, Carmichael ISE (1981) Oxygen isotope thermometry of basic lavas and mantle nodules. Contrib Mineral Petrol 77 11-23... [Pg.362]

Farquhar J, Chacko T, Ellis DJ (1996) Preservation of oxygen isotope compositions in granulites from Northwestern Canada and Enderby Land, Antarctica Implications for high-temperature isotopic thermometry. Contrib Mineral Petrol 125 213-224... [Pg.405]

Kirrg EM, Valley JW, Davis DW, Kowallis BJ (2001) Empirical determirration of oxygen isotope fractiorratiorr factors for titanite with respect to zircorr arrd quartz. Geochim Cosmochim Acta, in press Kitchen NE, Valley JW (1995) Carbon isotope thermometry in marbles of the Adirondack Mormtairrs, New York. JMetamor Geol 13 577-594... [Pg.407]

Putlitz B, Valley JW, Matthews A (2001) Oxygen isotope thermometry of quartz-Al2Si05 veins in high grade metamorphic rocks on Naxos. Contrib Mineral Petrol (in press)... [Pg.409]

Vannay J-C, Sharp ZD, Grasemann B (1999) Himalayan inverted metamorphism constrained by oxygen isotope thermometry. Contrib Mineral Petrol 137 90-101 Vogel DE, Garlick GD (1970) Oxygen-isotope ratios in metamorphic eclogites. Contrib Mineral Petrol 28 183-191... [Pg.412]

A long-standing method for thermometry has been to measure the stable oxygen isotope ratios in carbonate rocks using MS. Uranium/lead isotope ratios, determined by MS, are used to estimate the age of the earth. [Pg.700]

In this section we consider first the distribution of oxygen isotopes in nature and then the use of oxygen isotopes in thermometry. This Is followed by a discussion of correlation diagrams which combine both oxygen isotopes and radiogenic isotopes and the way in which such correlations may be used to infer geological processes. [Pg.270]

One of the first applications of the study of oxygen isotopes to geological problems was to geo thermometry. Urey (1947) suggested chat the enrichment of 0 in calcium carbonate relative to seawater was temperature-dependent and could be used to determine the temperature of ancient ocean waters. The idea was quickly adopted and palaeotemperatures calculated for the Upper Cretaceous seas of the northern hemisphere. Subsequently, a methodology was developed for application to higher-temperature systems based upon the distribudon of between mineral-pairs. An excellent review of the methods and applications of pxygen isotope thermometry is given by Clayton (1981). [Pg.271]

See other pages where Oxygen isotope thermometry is mentioned: [Pg.22]    [Pg.167]    [Pg.65]    [Pg.224]    [Pg.230]    [Pg.70]    [Pg.111]    [Pg.3413]    [Pg.52]    [Pg.54]    [Pg.59]    [Pg.365]    [Pg.385]    [Pg.388]    [Pg.403]    [Pg.407]    [Pg.407]    [Pg.409]    [Pg.410]    [Pg.411]    [Pg.412]    [Pg.550]    [Pg.271]    [Pg.272]    [Pg.272]   
See also in sourсe #XX -- [ Pg.266 , Pg.268 ]



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