搜索结果: 1-7 共查到“地质学 Problem”相关记录7条 . 查询时间(0.031 秒)
中国地质大学科学技术发展院常标(博士生)，李超*，黄俊华*等. BGEG国家重点实验室, Proceedings of the National Academy of Sciences of United States of America（2020），Massive formation of early diagenetic dolomite in the Ediacaran ocean: Constraints on the “dolomite problem”
早期海洋；大规模；早期；白云石；
2021/10/15
2020年6月8日，生物地质与环境地质国家重点实验室李超教授团队在白云石地质成因领域取得重要进展，相关成果发表于国际著名综合性学术期刊《PANS》，题目为《埃迪卡拉纪海洋大规模早期成岩白云石的形成:对“白云石之谜”的约束》，该实验室博士生常标为第一作者，生物地质与环境地质国家重点实验室李超教授、地质过程与矿产资源国家重点实验室黄俊华教授为共同通讯作者。
The Problem of the Core-Cover Boundary of the Menderes Massif and an Emplacement Mechanism for Regionally Extensive Gneissic Granites, Western Anatolia (Turkey)
gneissic granites syntectonic granites Menderes Massif western Anatolia
2009/7/8
In previous studies, the stratigraphy of the Menderes Massif was divided into a Precambrian core and Mesozoic cover associations, the core consisting of gneissic granites and high-grade schists and th...
Electron microprobe analysis of Ca in olivines close to grain boundaries: The problem of secondary X-ray fluorescence
Electron microprobe analysis of Ca olivines grain boundaries secondary X-ray fluorescence
2012/4/5
AnalysisofCain olivine grainscloseto boundaries withCa-richphases is inherently problematic becauseofthe effectsofsecondary X-rayfluorescenceofCafrom the adjoining Ca-richphase. Commercial fluorescenc...
The Problem of Expressing the Specific Surface Areas of Clay Fractions
Density Fe and Ti oxides Magnetic and non-magnetic fractions Specific surface area
2011/12/28
Estimations of the external specific surface areas (S.S.A.) by the N2-BET method of clay separates that were further fractionated by the high gradient magnetic separation technique revealed that the m...
Analytical Electron Microscopy and the Problem of Potassium Diffusion
Adularia Analytical electron microscopy Diffusion Muscovite Potassium Transmission electron microscopy
2012/1/10
Diffusion of K during analytical electron microscopy (AEM) results in anomalously low count rates for this element. As the analysis area and specimen thickness decrease, count rates become disproporti...
Reassessment of the Volkonskoite-Chromian Smectite Nomenclature Problem
Chlorite Chromium Nomenclature Octahedral cations Smectite Volkonskoite
2012/1/10
The name volkonskoite was first used in 1830 to describe a bright blue-green, chromium-bearing clay material from the Okhansk region, west of the Ural Mountains, U.S.S.R. Since that time, the name has...
New Approach to the Problem of the Interlayer Bonding in Kaolinite
Interlayer Kaolinite New Approach
2012/2/13
The possibility of recording the absorption band which is related to oscillations of free OH in a superficial plane of the octahedral sheet of kaolinite inspired the present authors to review the prob...