Results 1 to 10 of about 24,904 (238)
Constraining the rise of oxygen with oxygen isotopes [PDF]
The loss of anomalous sulfur isotope compositions from sedimentary rocks has been considered a symptom of permanent atmospheric oxygenation. Here the authors show sulfur and oxygen isotope evidence from
B. A. Killingsworth +5 more
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Paradoxically lowered oxygen isotopes of hydrothermally altered minerals by an evolved magmatic water [PDF]
It has been well known that the influxing meteoric water can hydrothermally lower oxygen and hydrogen isotopes of rocks and/or minerals during continental magmatic or metamorphic processes in certain appropriate cases.
Chun-Sheng Wei, Zi-Fu Zhao
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Triple Oxygen Isotope Paleoaltimetry of Crystalline Rocks
Triple oxygen isotopes of hydrothermally altered minerals from crystalline rocks can be used to determine past elevations of mountain ranges. This method uses all three isotopes of oxygen (16O, 17O, and 18O) to create arrays that can be extrapolated back
C. Page Chamberlain +6 more
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As an important technological measure to uncover complex sedimentary-diagenetic process, microzone in situ geochemical analysis has drawn more and more attention along with improving analytical and test levels.
Jun HAN +4 more
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Presenting the Compendium Isotoporum Medii Aevi, a Multi-Isotope Database for Medieval Europe
Measurement(s) Isotopes Technology Type(s) Mass Spectrometry Factor Type(s) Carbon isotopes • nitrogen isotopes • sulfur isotopes • oxygen isotopes • strontium isotopes Sample Characteristic - Organism Humans • Animals • Plants Sample Characteristic ...
Carlo Cocozza +4 more
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This study aimed to characterize the temporal and spatial variation in isotopes of different water sources of the Pingshuo mining area to identify the significance of coal mining activities to the regional water cycle.
Long SUN +4 more
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Evaluation of oxygen isotopes and trace elements in planktonic foraminifera from the Mediterranean Sea as recorders of seawater oxygen isotopes and salinity [PDF]
The Mediterranean Sea is characterized by a relatively strong west to east salinity gradient, which makes it an area suitable for testing the effect of salinity on foraminiferal shell geochemistry.
L. K. Dämmer +5 more
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Here we present derived thermal-hydrological variations data during the Marine isotope stages (MISs) 10–12 using surface and subsurface dwelling planktonic foraminiferal geochemical proxies of a sedimentary core of MD05-2925 (9.3oS, 151.5oE, water depth ...
Li Lo +5 more
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Isotopic Tracing of Perchlorate Sources in the Environment
Perchlorate (ClO4−) is an emerging persistent pollutant that is ubiquitous in the environment at trace concentrations. Perchlorate ingestion poses a risk to human health because it interferes with thyroidal hormone production.
Mengnan Zhang +6 more
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Building Mexican isoscapes: Oxygen and hydrogen isotope data of meteoric water sampled across Mexico
Oxygen and hydrogen isotope data of meteoric water samples are compiled from several States across Mexico. This dataset includes 287 oxygen and hydrogen (and deuterium excess) isotope data corresponding to meteoric water collected from the surface ...
Diana K. Moreiras Reynaga +5 more
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