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中国地质大学科学技术发展院袁悦锋*，王凤华*，朱培民等，地空学院， Geophysical Research Letters（2020）. New Constraints on the Young Lava Flow Profile in the Northern Mare Imbrium（图）
月球；雨海北部；年轻；爱拉托逊纪；熔岩流；多期性
2021/10/15
近日，地球物理著名期刊《Geophysical Research Letters》刊发了我校地空学院袁悦锋博士后、朱培民教授和肖龙教授，联合长江大学、宁波财经大学合作者的研究成果——New constraints on the young lava flow profile in the northern Mare Imbrium。该研究通过重新分析嫦娥三号低频雷达浅层数据，推测出月球雨海北部年轻...
Quantitative determination of long-term erosion rates of weathered granitic soil surfaces in western Abukuma, Japan using cosmogenic 10Be and 26Al depth profile
weathered granitic soil surface erosion rate cosmogenic 10Be and 26Al depth profile sampling depth
2017/8/9
We present erosion rates of granitic soil surfaces in the western Abukuma upland, Japan using depth profiles of in-situ produced cosmogenic 10Be and 26Al based on physical parameters for both neutron ...
Strontium isotopic and elemental characteristics of calcites in the eolian dust profile of the Chinese Loess Plateau during the past 7 Ma
Chinese Loess Plateau the eolian dust profile strontium isotope of calcite chemical weathering the East Asian summer monsoon
2017/8/10
Strontium isotopic ratios, calcium and strontium contents of calcites in the eolian dust profile during the last 7 Ma at Lingtai were systematically studied. 87Sr/86Sr ratios of calcites change with t...
The Dependence of Localized Crystallization of Halloysite and Kaolinite on Primary Minerals in the Weathering Profile of Granite
Biotite Granite Halloysite Kaolinite Weathering
2011/12/5
Abstract: The formation of kaolin-group minerals in the weathering profile of granite, under the humid, temperate climate as found in Korea, was studied by X-ray diffraction (XRD), scanning electron m...
Determination of Illite-Smectite Structures Using Multispecimen X-ray Diffraction Profile Fitting
Illite-Smectite Simulation Structure Swelling X-Ray Diffraction
2011/12/7
Abstract: A procedure for structural investigations by X-ray diffraction of mixed-layer structures incorporating swelling layers has been developed. For each sample, specimens saturated with different...
Characterization of Intercalated Smectites Using XRD Profile Analysis in the Low-Angle Region
Montmorillonite Profile Analysis Smectite XRD
2011/12/2
Abstract: X-ray diffraction (XRD) characterization of natural and intercalated smectites is usually limited to the apparent d-value estimated from the peak maxima in the raw data. This can lead to the...
Decomposition of Experimental X-ray Diffraction Patterns (Profile Fitting): A Convenient Way to Study Clay Minerals
Clay Minerals Decomposition Mixed Layering Simulation X-ray Powder Diffraction
2011/12/9
Abstract: This paper thoroughly describes the decomposition procedure, using the example of DECOMPXR (Lanson 1990). The steps of the decomposition procedure are: 1) preliminary data processing; 2) dec...
Crystallochemical Study of a Population of Particles in Smectites from a Lateritic Weathering Profile
Crystal-chemistry ESR FTIR Layer structural composition Mossbauer Nontronite Smectite Solid-solution
2011/12/31
In the copper deposit of Salobo 3A (Brazil), nontronite-like clay samples were found at the bottom of the weathering blanket. Samples were fractionated first by sedimentation and then by a HGMS method...
High-Resolution Transmission Electron Microscopy Study of Mn-Oxyhydroxide Transformations and Accompanying Phases in a Lateritic Profile of Moanda, Gabon
Energy-dispersive X-ray analysis Hausmannite High-resolution transmission electron microscopy Laterite Manganese Manganite Pyrolusite Topotactic transformation
2011/12/31
Unheated natural mixtures of manganite and secondary pyrolusite, from the same lateritic manganiferous sequence, were studied in different orientations by high-resolution transmission electron microsc...
Formation of Trioctahedral Illite from Biotite in a Soil Profile Over Granite Gneiss
Biotite Electron microprobe Illite Mica Scanning electron microscopy Trioctahedral Weathering X-ray powder diffraction
2012/1/4
Clay fractions separated from the A2, B, and C horizons of a soil formed on granite gneiss showed X-ray powder diffraction (XRD) spacings characteristic of trioctahedral illite. The trioctahedral illi...
Natroalunite in a Laterite Profile Over Deccan Trap Basalts at Matanumad, Kutch, India
Alunite Kaolinite Laterite Natroalunite Oxidation Saprolite
2012/1/10
An end-member natroalunite of composition (K0.04Na0.96)(Al2.98Fe0.02)(SO4)2(OH)6 occurs in saprolitic clays in a laterite profile developed over Deccan Trap basalts at Matanumad in the Kutch region of...
Characterization of Goethite and Hematite in a Tunisian Soil Profile by Mossbauer Spectroscopy
Aluminum Goethite Hematite Iron Manganese Mossbauer spectroscopy Soil
2012/1/12
As part of the characterization of a Tunisian red soil profile, six samples, taken at different depths, were investigated by M鰏sbauer spectroscopy at room temperature and at 80 K to obtain information...
Hydrogen Atom Positions in Kaolinite by Neutron Profile Refinement
Crystal structure Hydrogen Kaolinite Neutron profile refinement O-H vector Rietveld method
2012/2/7
A structure refinement of kaolinite made using the Rietveld neutron profile refinement technique has given non-hydrogen atom positions which were not significantly different from those given by B. B. ...