4 Result(s)
within
Chapter
J. Hoefs
Earth Sciences
English
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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
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...
