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Zircon U-Pb age, Trace Element, and Hf Isotopic Compositions of Nordmarkite in the Lizhuang Rare Earth Element Deposit in the Western Margin of the Yangtze Block
nordmarkite REE deposit Hf isotopic characteristics of zircon Lizhuang
2018/4/10
The Mianning–Dechang (MD) rare earth element (REE) belt, located in the northern Kangdian axis (KDA) in the western margin of the Yangtze platform, is one of the most economically significant REE mine...
Tellurium isotope compositions in acid leach fractions of carbonaceous chondrites
tellurium isotopes acid leaching N-TIMS carbonaceous chondrites isotope anomaly
2017/4/10
We present the tellurium (Te) isotope compositions of the acid leachates and residues from three carbonaceous chondrites,
namely, Allende, Murchison, and Tagish Lake. Most of the Te isotope compositi...
Major and trace element compositions and resource potential of ferromanganese crust at Takuyo Daigo Seamount, northwestern Pacific Ocean
Fe-Mn crust Takuyo Daigo Seamount northwestern Pacific Ocean resource potential evaluation
2017/4/10
We report major element and trace element compositions of ferromanganese crusts (Fe-Mn crusts) on Takuyo Daigo
Seamount, northwestern Pacific Ocean. Highly enriched elements in these crusts, such as ...
Presolar silicate grains: Abundances, isotopic and elemental compositions, and the effects of secondary processing
presolar grains silicates nucleosynthesis isotopes AGB stars
2017/4/10
Close to a thousand presolar silicate grains have been identified since their initial discovery in interplanetary dust
particles (IDPs) just over ten years ago. Studies have shown that silicates are ...
Long time-series of chemical and isotopic compositions of Vesuvius fumaroles: evidence for deep and shallow processes
Chemical and isotopic composition mount Vesuvius jet orifice
2015/8/27
Long time-series of chemical and isotopic compositions of Vesuvius fumaroles were acquired in the framework of the volcanic surveillance in the 1998-2010 period. These allow the identification of proc...
Isotopic compositions of asteroidal liquid water trapped in fluid inclusions of chondrites
fluid inclusion hydrogen isotope oxygen isotope asteroid water
2017/4/11
Determination of isotopic composition of extraterrestrial liquid water provides important information regarding the
origin of water on Earth and the terrestrial planets. Fluid inclusions in halite of...
Isotope and chemical compositions of thermal fluids at Tekman Geothermal Area (Eastern Turkey)
geothermal hydrogeochemistry isotope geothermometers Tekman
2017/4/11
The aim of this study was to understand geochemistry of thermal fluids circulating in the basin at the southwest of
Tekman (Erzurum, Turkey) Geothermal Province in Eastern Anatolia as well as to esti...
Sulfur, oxygen, and hydrogen isotope compositions of precipitation in Seoul, South Korea
sulfur isotope oxygen hydrogen pollution precipitation sulfate Korea East Asia
2017/4/11
To evaluate the source of sulfur and the extent of seasonal and local characteristics in Seoul’s precipitation chemistry,
we measured sulfur, oxygen, and hydrogen isotopic ratios of precipitation. Th...
East-west mantle geochemical hemispheres constrained from Independent Component Analysis of basalt isotopic compositions
mantle isotope domain basalt supercontinent
2017/4/11
In order to decipher the mantle geochemical heterogeneity that reflects material differentiation and circulation within
the Earth, we examined mid-ocean ridge basalts (MORB), ocean island basalts (OI...
Stepwise combustion analyses of distinct nitrogen isotopic compositions on Paleoproterozoic organic matter
nitrogen isotopic composition Paleoproterozoic stepwise combustion method kerogen Gunflint Formati
2017/4/11
Nitrogen isotopic analyses were conducted on two kerogenous samples from the Gunflint Formation (ca. 1.9 Ga)
using the stepwise combustion technique to evaluate a potential analytical problem for the...
Carbon- and oxygen-isotope compositions of a modern deep-water brachiopod Campagea japonica collected off Aguni-jima, Central Ryukyu Islands, southwestern Japan
rachiopoda carbon-isotope composition oxygen-isotope composition Campagea japonica paleoenvironmen
2017/4/11
We present carbon- and oxygen-isotope compositions in a shell (δ13CS and δ18OS, respectively) of a modern brachiopod
Campagea japonica collected at a water depth of 606 m off Aguni-jima, Central Ryuk...
Carbon isotopic compositions of fatty acids from the Japan Sea and their inferred terrestrial palaeoenvironment in Late Pleistocene
carbon isotopic compositions (δ13C) fatty acids
2017/4/12
Abundance and carbon isotopic composition (δ13C) of monocarboxylic fatty acids (n-FA) and n-alkanes in sediments
spanning the last 24 kyrs from the southeastern Oki Trough, Japan Sea (core KT96-17, P...
Comparison of free lipid compositions between roots and leaves of plants in the Dajiuhu Peatland, central China
plant roots n-alkanes n-alkanols
2017/4/12
The main aim of this study was to assess the free lipid composition of plant community in a Chinese peatland. Twelve
plant species from the Dajiuhu Peatland were analyzed for the compositions of n-al...
Elemental and Sr–Nd isotopic compositions of Cenozoic sedimentary rocks from the Dongying Sag of Jiyang depression, North China: Implications for provenance evolution
provenance Dongying Sag Jiyang depression
2017/4/12
Major, trace element and Sr–Nd isotopic compositions of Cenozoic sedimentary rocks from the Dongying Sag and the
Zhanhua Sag, Jiyang Depression, provide evidence for provenance evolution and paleogeo...
Stable isotope compositions of a late Jurassic ammonite shell:a record of seasonal surface water temperatures in the southern hemisphere?
Stable isotope compositions late Jurassic ammonite shell seasonal surface water temperatures
2009/10/22
Exceptional preservation of aragonite secreted by ammonites offers an opportunity to determine the seasonal temperature variations of Mesozoic surface waters. Ontogenetic profiles of carbon and oxygen...