6 Result(s)
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Chapter
Stable Isotope Characteristics of Recent Natrocarbonatites from Oldoinyo Lengai
Carbon and oxygen isotopic compositions of nyerereite and gregoryite phenocrysts and wholerock samples of natrocarbonatite lavas from the June 1988 eruption of Oldoinyo Lengai lie within restricted ranges of δ13C...
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Chapter
Isotopic Mineralogy
Among the 340 isotopes of the 98 chemical elements occurring in the minerals of the Earth, Moon, Mars, and meteorites, the majority are nonradioacitive. Many of them are absolutely stable in accordance with th...
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Chapter and Conference Paper
The Carbon and Oxygen Isotope Composition of Pancreatic Stones
Human pancreatic stones consist predominantly of calcium carbonate. In this note I report on a study of the carbon and oxygen isotope composition of pancreatic calculi from three different geographic areas (In...
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Chapter
Isotope geothermometers
The best available isotope thermometers of the elements oxygen, sulfur, carbon and hydrogen are summarized, and some applications to metamorphic rocks, to sulfide ore deposits and to geothermal systems are dis...
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Chapter
Oxygen Isotope Ratios in Late Cenozoic Andean Volcanics
O-isotope ratios for 127 Cenozoic volcanic rocks from the Andean Cordillera between 5°N and 4°S range from +5.2 to +14.0‰ (SMOW). Lavas from eight volcanoes in the SVZ between 36–42°S exhibit a very narrow ran...
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Chapter and Conference Paper
Genesis of Damaran Granites in the Light of Rb/Sr and δ18O Data
The mean (87Sr/86Sr) and mean (87Rb/86Sr) ratios of the intrusive granites from the northern and southern parts of the Orogen’s Central Zone plot on straight lines. These are interpreted as areal isochrons indica...
