搜索结果: 1-15 共查到“地质学 iron”相关记录139条 . 查询时间(0.109 秒)
中国地质大学科学技术发展院文广（博士生），李建威等资源学院 Geochimica et Cosmochimica Acta, 2017. Hydrothermal reequilibration of igneous magnetite in altered granitic plutons and its implications for magnetite classification schemes: Insights from theHandan-Xingtai iron district, North China
李建威
2021/10/21
近日，中国地质大学资源学院和地质过程与矿产资源国家重点实验室李建威教授团队在国际地球化学顶级期刊发表题为《Hydrothermal reequilibration of igneous magnetite in altered granitic plutons and its implications formagnetite classification schemes: Insights fr...
Research proposes new theories about nature of Earth’s iron
new theories nature Earth’s iron
2017/3/30
New research challenges the prevailing theory that the unique nature of Earth’s iron was the result of how its core was formed billions of years ago.The study opens the door to competing theories abou...
A COMPLEMENTARY USE OF INFORMATION FROM SPACE-BASED DINSAR AND FIELD MEASURING SYSTEMS FOR OPERATIONAL MONITORING PURPOSES IN OPEN PIT IRON MINES OF CARAJáS MINING COMPLEX (BRAZILIAN AMAZON REGION)
rock slope monitoring open pit iron mine
2015/5/7
Now spanning five simultaneous open-pit operations with exploration carried out through open pit benching, Carajás complex encompasses the world′s largest iron reserves. Open pit mining operations i...
Atmospheric dissolved iron deposition to the global oceans: effects of oxalate-promoted Fe dissolution, photochemical redox cycling, and dust mineralogy
global oceans oxalate-promoted Fe dissolution
2014/12/12
Mineral dust deposition is suggested to be a significant atmospheric supply pathway of bioavailable iron
(Fe) to Fe-depleted surface oceans.
Association Between Geophagia and Haematological Parameters of Iron Deficiency Anaemia in Geophagic Qwa-Qwa Women
Association Between Geophagia and Haematological Parameters of Iron Deficiency Anaemia in Geophagic Qwa-Qwa Women
2012/3/14
Association Between Geophagia and Haematological Parameters of Iron Deficiency Anaemia in Geophagic Qwa-Qwa Women.
Oxidation State of Iron in Glauconite from Oxidized and Reduced Zones of Soil-Geologic Columns
Glauconite Iron Mossbauer spectroscopy Oxidized zone Pyrite Reduced zone Soil
2011/11/30
Abstract: Glauconite from the oxidized and reduced zones of soil-geologic columns at two Coastal Plain sites, one in Maryland and one in New Jersey, was examined by M鰏sbauer spectroscopy. The data ind...
Identification of Iron Rusts on Rail by X-Ray Diffraction and Vibrational Analysis
Corrugation Rail Railway Raman Scattering Submarine Tunnel Vibrational Spectroscopy X-Ray Diffraction (XRD)
2011/12/16
A periodical unevenness of the running surface of rails is formed on ascending slope of submarine railway tunnel. One of the causes has been concluded due to the combination of a low friction and whee...
Optimization of Stope Structure Parameters in E’xi Iron Mine Based on Rock Stress Analysis
Numerical Simulation with the Finite Element Method Rock Mechanic Stope Structure Parameters Optimization Stress Analysis Underground Mining
2011/12/20
Underground mining causes the redistribution of surrounding rock stress. The value of rock stress is one of the important factors that should be considered when stope structure size is designed. E’xi ...
Effects of pH, ionic strength, temperature, and humic acid on Eu(III) sorption onto iron oxides
Iron oxides Eu(III) Sorption HA Temperature
2011/11/10
Effects of pH, Eu(III) concentration, ionic strength, temperature and humic acid (HA) on Eu(III) sorption to iron oxides were investigated in detail. The sorption of Eu(III) to iron oxides was signifi...
The Effect of Laser Processed Nano-SiC-Ni Metal Ceramic on the Surface Properties of the Iron-Based Material
Appraisal System Grey Relation Evaluation Theory Laser Alloying Metal-Ceramic Silicon Carbide (SiC)
2011/11/22
In this article, we have carried out the Ni based self fluxing alloy powder and studied the effect on the laser alloying of 45steel layer which contains different weight percentage of nano-SiC powders...
Desferrioxamine-B adsorption to and iron dissolution from palygorskite and sepiolite
DFOB Siderophore Fibrous clays Weathering Kinetic Isotherm
2011/11/4
Dissolution weathering of minerals can be greatly affected by the presence of siderophores and their adsorption in soil environments. In this research, adsorption equilibria and kinetics of desferriox...
Diagenetic influences on iron-bearing minerals in Devonian carbonate and siliciclastic rocks of Estonia
Devonian diagenesis carbonate rocks siliciclastic rocks mixed carbonate-siliciclastic rocks
2009/10/22
The Estonian Devonian sediments consist of carbonate, siliciclastic, and mixed carbonate-siliciclastic deposits that have undergone extensive dolomitization. Chemical analysis of 165 samples and XRD m...
Microbial biomineralization of iron seepage water: Implication for the iron ores formation in intertidal zone of Zhoushan Archipelago, East China Sea
ancient wood layer seepage water biomineralization iron ores intertidal zone
2017/8/9
The biogeochemcical reactions responsible for fossilized minerals preservation in ancient geological conditions are very often debatable, because little is known about the in situ processes at geo-his...
Thermodynamic properties of alloys of gold-74/palladium-26 with variable amounts of iron and the use of Au-Pd-Fe alloys as containers for experimental petrology
ariable amounts Thermodynamic
2014/4/8
Iron oxide-alloy equilibration experiments were conducted in H2
-CO2
gas mixtures at 1 atm and
1125–1240 °C using strips of Au74Pd26
(wt%) and produced Au-Pd-Fe alloys with 0.03–13 wt% iron.
...
Changes in phosphorus biogeochemistry along an estuarine salinity gradient: The iron conveyer belt
Changes in phosphorus biogeochemistry estuarine salinity gradient The iron conveyer belt
2014/4/18
We used sequential extractions to quantify different forms of particulate phosphorus (PP) in sediments along the salinity gradient of the Patuxent River estuary. About 50-90% of the PP was phosphate b...