搜索结果: 1-10 共查到“地质学 isotopic compositions”相关记录10条 . 查询时间(0.18 秒)
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
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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...
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
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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
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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...
East-west mantle geochemical hemispheres constrained from Independent Component Analysis of basalt isotopic compositions
mantle isotope domain basalt supercontinent
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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
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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 isotopic compositions of fatty acids from the Japan Sea and their inferred terrestrial palaeoenvironment in Late Pleistocene
carbon isotopic compositions (δ13C) fatty acids
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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...
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
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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...
Grain size effect on Sr and Nd isotopic compositions in eolian dust: Implications for tracing dust provenance and Nd model age
eolian dust Sr and Nd isotope Nd model age grain size effect isotopic tracing
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2017/8/9
Strontium (Sr) and neodymium (Nd) isotopic compositions enable identification of dust sources and reconstruction of atmospheric dispersal pathways. The Sr and Nd isotopic compositions in eolian dust c...
Elemental and Sr-Nd-Pb isotopic compositions of late Cenozoic Abaga basalts, Inner Mongolia: Implications for petrogenesis and mantle process
geochronology geochemistry Abaga basalts late Cenozoic Inner Mongolia
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2017/8/10
The Abaga volcanic field is one of the largest and least known areas of late Cenozoic intraplate igneous activities in eastern China. Twenty-seven Abaga basaltic rocks were analyzed for major and trac...
Implications of Linearly Correlated Oxygen and Hydrogen Isotopic Compositions for Kaolinite and Illite in the Magnus Sandstone, North Sea
Illite Kaolinite Stable isotopes Porewater
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2011/12/29
Authigenic kaolinite and illite are important diagenetic minerals in the Magnus Sandstone, a giant oil reservoir in the northern North Sea. These clay minerals, separated from three wells, show consid...