Oxygen isotope fractionation

Bryant, J.D. and Froelich, P.N. 1995 A model of oxygen isotope fractionation in body water of large mammals. Geochimica et CosmochimicaActa 59 4523-4537. [Pg.137]

Oxygen isotopic fractionation factors used for the calculation were taken from Taylor (1997). Initial 8 0 value of hydrothermal solution (0%o) was estimated from 8 0 values of K-feldspar and quartz in the veins and homogenization temperatures (Shikazono and Nagayama, 1993), and that of groundwater (—7%c) was estimated from meteoric water value of the south Kyushu district (—7%c) (Matsubaya et al., 1975). [Pg.190]

Zheng, Y.F. (1996) Oxygen isotope fractionations involving apatites Application to paleotemperature determination. Chem. Geol, 127, 177-187. [Pg.447]

Olley JM, Roberts RG, Murray AS (1997) A novel method for determining residence times of river and lake sediments based on disequilibriiun in the thorium decay series. Water Resom Res 33 1319-1326 Onac BP, Lauritzen S-E (1996) The climate of the last 150,000 years recorded in speleothems preliminary results from north-western Romania. Theor Appl Karstology 9 9-21 O Neil JR., Clayton RN, Mayeda TK (1969) Oxygen isotope fractionation in divalent metal carbonates. J ChemPhys 51 5547-5558... [Pg.458]

Abstract The theoretical framework needed for interpretation of kinetic isotope effects on unimolecular reactions is reviewed. Application to the satisfactory rationalization of the theoretically puzzling mass independent isotope effect observed for oxygen isotope fractionation in extraterrestrial samples is described. [Pg.427]

Oxygen Isotope Fractionation in Earth, Moon, and Meteorite Samples... [Pg.445]

Bao H, Koch PL (1999) Oxygen isotope fractionation in ferric oxide-water systems low-temperature synthesis. Geochim Cosmochim Acta 63 599-613... [Pg.22]

Clayton RN, Goldsmith JR, Mayeda TK (1989) Oxygen isotope fractionation in quartz, albite, anorthite, and calcite. Geochim Cosmochim Acta 53 725-733... [Pg.22]

Fayek M, Kyser TK (2000) Low temperature oxygen isotopic fractionation in the uraninite-UOj-COj-HjO system. Geochim Cosmochim Acta 64 2185-2197... [Pg.22]

Fortier SM, Cole DR, Wesolowski DJ, Riciputi LR, Paterson BA, Valley JW, Horita J (1995) Determination of the magnetite-water equilibrium oxygen isotope fractionation factor at 350°C a comparison of ion microprobe and laser fluorination techniques. Geochim Cosmochim Acta 59 3871-3875 Friedman I, O Neil JR (1977) Compilation of Stable Isotope Fractionation Factors of Geochemical Interest. US Geol Surv Prof Paper 440-KK... [Pg.22]

O Neil JR, Truesdell AH (1991) Oxygen isotope fractionation studies of solute-water interactions. In Stable Isotope Geochemistry A Tribute to Samuel Epstein. Taylor Jr. HP, O Neil JR, Kaplan IR (eds), Geochem Soc Spec Pub 3 17-25... [Pg.23]

O Neil JR, Clayton RN, Mayeda TK (1969) Oxygen isotope fractionation in divalent metal carbonates. J Chem Phys 51 5547-5558... [Pg.24]

Sverjensky DA, Shock EL, Helgeson HC (1997) Prediction of flie thermodynamic properties of aqueous metal complexes to 1000°C and 5 kb. Geochim Cosmochim Acta 61 1359-1412 Tarutani T, Clayton RN, Mayeda TK (1969) The effect of polymorphism and magnesium substitution on oxygen isotope fractionation between calcium carbonate and water. Geochim Cosmochim Acta 33 987-996... [Pg.24]

For crystals with molecule-like constituents, like the BO, " and BO4 " groups in some borates, semi-quantitative models of the molecular component as a gas-phase entity have been proposed (Oi et al. 1989). This is conceptually similar to the approximation made for species in solution, although in practice most studies of crystals consider additional frequencies that reflect inter-molecular vibrations. The spectroscopic data on these vibrations (which typically have lower frequencies than the intra-molecular vibrations) are often available, at least approximately, from infrared and Raman spectroscopy and elastic properties. This type of hybrid molecule-in-crystal model has been applied to many minerals in theoretical studies of carbon and oxygen isotope fractionation, the most noteworthy being studies of calcite (Bottinga 1968 Chacko et al. 1991) and sihcates (Kieffer 1982). Because specfroscopic dafa are always incomplete (especially for subsfances substifufed wifh rare isolopes), some amounl of vibralional modeling is necessary. [Pg.76]

Oxygen isotopic fractionation between two minerals A and B at any given T can easily be obtained by subtracting their respective reduced partition function equations—i.e.,... [Pg.773]

Figure 11,31 Oxygen isotopic fractionation between calcite and diopside as obtained from equations 11.131 to 11.133. Experimental data points are from Chiba et al. (1989). Dotted line indications from vibrational calculations following Kielfer s (1982) procedure. From Clayton and Kielfer (1991), reprinted with kind permission of The Geochemical Society, Pennsylvania State University, University Park, Pennsylvania.

$Figure 11,31 Oxygen isotopic fractionation between calcite and diopside as obtained from equations 11.131 to 11.133. Experimental data points are from Chiba et al. (1989). Dotted line indications from vibrational calculations following Kielfer s (1982) procedure. From Clayton and Kielfer (1991), reprinted with kind permission of The Geochemical Society, Pennsylvania State University, University Park, Pennsylvania.$

Calculation of reduced partition normalized fractionation factors, through the modified increment method, allows the derivation of T-dependent mineral-mineral oxygen isotopic fractionations expressed in the polynomial form... [Pg.776]

Table 11.12 Oxygen isotope fractionation in quartz-mineral, mineral-water, and calcite-mineral couples, according to modified increment method of Zheng (1991, 1993a,b).

$Table 11.12 Oxygen isotope fractionation in quartz-mineral, mineral-water, and calcite-mineral couples, according to modified increment method of Zheng (1991, 1993a,b).$

Figure 11,33 Calculated oxygen isotope fractionation factors A% for methane-water vapor and hydrogen-water vapor couples plotted against T(°C). Reprinted from Y. Bottinga, Geochimica et Cosmochimica Acta, 33, 49-64, copyright 1969, with kind permission from Elsevier Science Ltd., The Boulevard, Langford Lane, Kidlington 0X5 1GB, UK.

$Figure 11,33 Calculated oxygen isotope fractionation factors A% for methane-water vapor and hydrogen-water vapor couples plotted against T(°C). Reprinted from Y. Bottinga, Geochimica et Cosmochimica Acta, 33, 49-64, copyright 1969, with kind permission from Elsevier Science Ltd., The Boulevard, Langford Lane, Kidlington 0X5 1GB, UK.$

Chiba H., Chacko T., Clayton R. N., and Goldsmith J. R. (1989). Oxygen isotope fractionations involving diopside, forsterite, magnetite, and calcite Application to geothermometry. Geochim. Cosmochim. Acta, 53 2985-2995. [Pg.824]

Zheng Y. F. (1991). Calculation of oxygen isotope fractionation in metal oxides. Geochim. Cosmochim. Acta, 55 2299-2307. [Pg.861]

Matsuhisa, Y., Goldsmith, J.R., Clayton, R.N. 1979. Oxygen isotopic fractionation in the system quartz-albite-anothite-water. Geochimica et Cosmochimica Acta, 43, 1131-1140. [Pg.246]

Isotope fractionations in solids depend on the nature of the bonds between atoms of an element and the nearest atoms in the crystal structure (O Neil 1986). The correlation between bond strength and oxygen isotope fractionation was investigated by Schiitze (1980), who developed an increment method for predicting oxygen isotope fractionations in silicate minerals. Richter and Hoemes (1988) applied this method to the calculation of oxygen isotope fractionations between silicate minerals and... [Pg.21]

Knowledge of the oxygen isotope fractionation between liquid water and water vapor is essential for the interpretation of the isotope composition of different water types. Fractionation factors experimentally determined in the temperature range from 0 to 350°C have been suntunarized by Horita and Wesolowski (1994). This is shown in Fig. 2.13. [Pg.61]

Fig. 2.13 Oxygen isotope fractionation factors between liquid water and water vapour in the temperature range 0 — 350° C (after Horita and Wesolowski 1994)...

$Fig. 2.13 Oxygen isotope fractionation factors between liquid water and water vapour in the temperature range 0 — 350° C (after Horita and Wesolowski 1994)...$

As already treated in the hydrogen section, isotope fractionations, the hydration of ions may play a significant role in hydrothermal solutions and volcanic vapors (Driesner and Seward 2000). Such isotope salt effects may change the oxygen isotope fractionation between water and other phases by several permil. [Pg.62]

Fig. 2.14 Oxygen isotope fractionations between pure water and solutions of various ions (after O Neil and TruesdeU 1991)...

$Fig. 2.14 Oxygen isotope fractionations between pure water and solutions of various ions (after O Neil and TruesdeU 1991)...$

Table 2.6 Experimentally determined oxygen isotope fractionation factors relative to water for the aqueous system CO2 — H2O between 5 and 40°C according to 10 hia = A(10 /T ) + B (Beck et al, 2005)...

$Table 2.6 Experimentally determined oxygen isotope fractionation factors relative to water for the aqueous system CO2 — H2O between 5 and 40°C according to 10 hia = A(10 /T ) + B (Beck et al, 2005)...$

Of equal importance is the oxygen isotope fractionation in the CO2 - H2O system. Early work concentrated on the oxygen isotope partitioning between gaseous CO2 and water (Brennikmeijer et al. 1983). More recent work by Usdowski and Hoefs (1993), Beck et al. (2005) and Zeebe (2007) have determined the oxygen isotope composition of the individual carbonate species that are isotopically different at room temperature. Table 2.6 summarizes the equations for the temperature dependence between 5 and 40°C (Beck et al. 2005). [Pg.63]

Fig. 2.15 Oxygen isotope fractionations between dissolved inorganic carbon (DIC) and water as a function of pH and temperatures (after Beck et al. 2005)...

$Fig. 2.15 Oxygen isotope fractionations between dissolved inorganic carbon (DIC) and water as a function of pH and temperatures (after Beck et al. 2005)...$

Fig. 2.16 Oxygen isotope fractionations between various minerals and calcite (after Chacko et al, 2001)...

$Fig. 2.16 Oxygen isotope fractionations between various minerals and calcite (after Chacko et al, 2001)...$

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