Oxygen isotope fractionation factors involving cassiterite (SnO2): I. calculation of reduced partition function ratios from heat capacity and X-ray resonant studies

2005 ◽  
Vol 69 (5) ◽  
pp. 1287-1300 ◽  
Author(s):  
V.B. Polyakov ◽  
S.D. Mineev ◽  
R.N. Clayton ◽  
G. Hu ◽  
V.M. Gurevich ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Partition Function ◽  
Oxygen Isotope ◽  
Isotope Fractionation ◽  
Oxygen Isotope Fractionation ◽  
X Ray ◽  
Fractionation Factors

Oxygen isotope fractionation factors among rock-forming minerals at high temperatures

1988 ◽  
Vol 70 (1-2) ◽  
pp. 183 ◽  
Author(s):  
R.N. Clayton ◽  
T.K. Mayeda ◽  
J.R. Goldsmith ◽  
H. Chiba ◽  
T. Chacko
Keyword(s):  
Oxygen Isotope ◽  
High Temperatures ◽  
Isotope Fractionation ◽  
Oxygen Isotope Fractionation ◽  
Fractionation Factors

Oxygen isotope fractionation factors between anhydrite and water from 100 to 550°C

1981 ◽  
Vol 53 (1) ◽  
pp. 55-62 ◽  
Author(s):  
Hitoshi Chiba ◽  
Minoru Kusakabe ◽  
Shin-Ichi Hirano ◽  
Sadao Matsuo ◽  
Shigeyuki Somiya
Keyword(s):  
Oxygen Isotope ◽  
Isotope Fractionation ◽  
Oxygen Isotope Fractionation ◽  
Fractionation Factors

The Dependence of the Oxygen Isotope Fractionation in the Hydration Water of CuSO4 · 5 H2O on the Crystallization Temperature

1975 ◽  
Vol 30 (12) ◽  
pp. 1667-1674
Author(s):  
D. Götz ◽  
K. Heinzinger ◽  
A. Klemm
Keyword(s):  
Neutron Diffraction ◽  
Oxygen Isotope ◽  
Isotope Fractionation ◽  
Crystallization Process ◽  
Water Molecules ◽  
Hydration Water ◽  
Isotopic Equilibrium ◽  
Oxygen Isotope Fractionation ◽  
X Ray ◽  
Different Types

Abstract The fractionation of the oxygen isotopes in the water collected by stepwise dehydration of CuSO4·5H2O has been measured for the crystallization temperatures 25, 40 and 50 °C. From X-ray and neutron diffraction studies it is known that three different kinds of water, differing in their binding in the crystal, exist in CuSO4 · 5 H2O. On the basis of the results reported here it is concluded that isotopic equilibrium exists between the different kinds of water in the crystal and the mother liquor during the crystallization process. In addition it is shown that on stepwise dehydration the water molecules from the different types of sites can be separated. Consequently, the measurements provide the possibility to determine crystallization temperatures from intracrystalline oxygen isotope fractionation alone. Possible applications in isotope geothermometry are discussed.

Oxygen isotope fractionation between gypsum and its formation waters: Implications for past chemistry of the Kawah Ijen volcanic lake, Indonesia

2020 ◽  
Vol 105 (5) ◽  
pp. 756-763
Author(s):  
Sri Budhi Utami ◽  
Vincent J. van Hinsberg ◽  
Bassam Ghaleb ◽  
Arnold E. van Dijk
Keyword(s):  
Oxygen Isotope ◽  
Isotope Fractionation ◽  
Historical Record ◽  
Oxygen Isotopic Composition ◽  
Volcanic Lake ◽  
Oxygen Isotope Fractionation ◽  
Crater Lakes ◽  
Oxygen Isotopic ◽  
Fractionation Factors ◽  
Kawah Ijen

Abstract Gypsum (CaSO4·2H2O) provides an opportunity to obtain information from both the oxygen isotopic composition of the water and sulfate of its formation waters, where these components are commonly sourced from different reservoirs (e.g., meteoric vs. magmatic). Here, we present δ18O values for gypsum and parent spring waters fed by the Kawah Ijen crater lake in East Java, Indonesia, and from these natural samples derive gypsum-fluid oxygen isotope fractionation factors for water and sulfate group ions of 1.0027 ± 0.0003‰ and 0.999 ± 0.001‰, respectively. Applying these fractionation factors to a growth-zoned gypsum stalactite that records formation waters from 1980 to 2008 during a period of passive degassing, and gypsum cement extracted from the 1817 eruption tephra fall deposit, shows that these fluids were in water-sulfate oxygen isotopic equilibrium. However, the 1817 fluid was >5‰ lighter. This indicates that the 1817 pre-eruption lake was markedly different, and had either persisted for a much shorter duration or was more directly connected to the underlying magmatic-hydrothermal system. This exploratory study highlights the potential of gypsum to provide a historical record of both the δ18Owater and δ18Osulfate of its parental waters, and provides insights into the processes acting on volcanic crater lakes or any other environment that precipitates gypsum.

scholarly journals Influence of climate change on carbon and oxygen isotope fractionation factors between glucose and α-cellulose of pine wood

2013 ◽  
Vol 40 (2) ◽  
pp. 145-152 ◽  
Author(s):  
Barbara Sensuła ◽  
Anna Pazdur
Keyword(s):  
Climate Change ◽  
Oxygen Isotope ◽  
Isotope Fractionation ◽  
Mean Value ◽  
Fractionation Factor ◽  
Oxygen Isotope Fractionation ◽  
Climate Signal ◽  
Carbon And Oxygen Isotope ◽  
The Relationship ◽  
Fractionation Factors

Abstract We present the first analysis of the influence of climate change on carbon and oxygen isotope fractionation factors for two saccharides (glucose and α-cellulose) of pine wood. The conifers grew in the Niepołomice Forest in Poland and the annual rings covered a time span from 1935 to 2000 AD. Glucose samples from acid hydrolysis of α-cellulose were extracted from annual tree rings. The carbon and oxygen isotope fractionation factors between glucose and α-cellulose were not stable over time. The mean value for the carbon isotope fractionation factors between glucose and α-cellulose was greater than unity. The mean value for the oxygen isotope fractionation factors between glucose and α-cellulose was lower than unity. We established, with respect to climate change, the significance of the interannual and intraannual variation in the carbon and oxygen isotope fractionation factors between both saccharides. We used moving interval correlation results for May of the previous year through September of the current year using a base length of 48 years. The relationship with summer temperature is the main climate signal in the carbon isotope fractionation factor between glucose and α-cellulose. The relationship with autumn sunshine is the main climate signal in the oxygen isotope fractionation factor between glucose and α-cellulose for the tree ring chronology.

Sign in / Sign up

Export Citation Format

Share Document