Sulphur isotope ratios in sulphate and oxygen isotopes in water from a small watershed in Central Sweden

Hematite is a potential mineral for reconstructing the oxygen isotope composition and paleotemperature of paleowater. A highly accurate analysis of oxygen isotopes is essential. However, relative to other oxygenated minerals, we lack hematite reference materials that allow for internationally comparable analyses between different laboratories. To address this issue, we attempted to perform bulk rock oxygen isotope analysis on five hematite reference materials (GBW07223a, GBW07825, YSBC28740-95, YSBC28756-2008, Harvard 92649). Meanwhile, the oxygen isotope ratios of iron oxides (GBW07223a, GBW07825, YSBC28740-95, YSBC28756-2008) were obtained by mass balance involving other oxygen-bearing minerals such as quartz and silicates. In addition, the oxygen isotope ratios of iron oxides in an oolitic hematite (ca. 1.65 billion years ago) are consistent with the results of previous analyses of this class of minerals.

Download Full-text

Sulphur accumulation and redistribution in wheat (Triticum aestivum): a study using stable sulphur isotope ratios as a tracer system

Plant Cell & Environment ◽

10.1046/j.1365-3040.1999.00445.x ◽

1999 ◽

Vol 22 (7) ◽

pp. 831-839 ◽

Cited By ~ 46

Author(s):

J. M. Monaghan ◽

C. M. Scrimgeour ◽

W. M. Stein ◽

F. J. Zhao ◽

E. J. Evans

Keyword(s):

Triticum Aestivum ◽

Isotope Ratios ◽

Sulphur Isotope ◽

Tracer System

Download Full-text

Downcore sulphur isotope ratios and diatom inferred pH in an artificially acidified Canadian shield lake

Environmental Pollution ◽

10.1016/0269-7491(88)90092-9 ◽

1988 ◽

Vol 49 (4) ◽

pp. 265-288 ◽

Cited By ~ 4

Author(s):

M. Dickman ◽

H.G. Thode ◽

S. Rao ◽

R. Anderson

Keyword(s):

Isotope Ratios ◽

Canadian Shield ◽

Sulphur Isotope ◽

Inferred Ph

Download Full-text

THE TEMPLE OF QUETZALCOATL, TEOTIHUACAN: NEW DATA ON THE ORIGINS OF THE SACRIFICIAL VICTIMS

Ancient Mesoamerica ◽

10.1017/s095653611900035x ◽

2020 ◽

pp. 1-16

Author(s):

T. Douglas Price ◽

Michael W. Spence ◽

Fred J. Longstaffe

Keyword(s):

Oxygen Isotopes ◽

Tooth Enamel ◽

Isotope Ratios ◽

Carbon Isotope Ratios ◽

Oxygen Isotope Ratios ◽

Childhood Diet ◽

Isotopic Proveniencing ◽

The Military ◽

The Temple ◽

Teotihuacan Mexico

Abstract Continuing isotopic investigation of the sacrificial burials and trophies beneath the Feathered Serpent Pyramid (Temple of Quetzalcoatl) in ancient Teotihuacan, Mexico, has produced new results. Isotopic proveniencing using bioapatite strontium and structural carbonate oxygen isotopes in tooth enamel was applied to 39 samples, 24 from the sacrificial victims and 15 from the trophy jaws. Both the strontium and oxygen isotope ratios suggest that most or all of the sacrificial victims came from the central highlands of Mexico, which includes the area of Teotihuacan. In this sense, we find somewhat less multiethnicity represented among the military at Teotihuacan than previously thought. Analysis of carbon isotope ratios in enamel structural carbonate indicated a childhood diet dominated by maize, relatively homogeneous among the victims at the pyramid, and typical for much of pre-Hispanic Mesoamerica.

Download Full-text

Isotopic homogenization and scrambling associated with oxygen isotopic exchange on hot platinum: studies on gas pairs (O2, CO2) and (CO, CO2)

RSC Advances ◽

10.1039/c6ra08286f ◽

2016 ◽

Vol 6 (56) ◽

pp. 51296-51303 ◽

Cited By ~ 4

Author(s):

K. Prasanna ◽

S. K. Bhattacharya ◽

Prosenjit Ghosh ◽

Sasadhar Mahata ◽

Mao-Chang Liang

Keyword(s):

Oxygen Isotopes ◽

Isotopic Exchange ◽

Isotope Ratios ◽

Oxygen Isotopic ◽

Two Phases ◽

Catalytic Exchange

The catalytic exchange between O2 and CO2 on hot platinum leads to isotope scrambling in CO2 and homogenization of the oxygen isotopes in the two phases even though they could be different in isotope ratios from each other before the exchange.

Download Full-text