搜索结果: 1-15 共查到“地质学 element”相关记录37条 . 查询时间(0.156 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
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...
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 ...
Finite element modeling of ground deformation and gravity field at Mt. Etna
numerical modeling gravity anomaly
2015/9/1
An elastic 3-D axi-symmetric model based on Finite Element Method (FEM) is proposed to compute ground deformation
and gravity changes caused by overpressure sources in volcanic areas. The numerical c...
Experimental study of rare earth element partitioning between calcite and sodium chloride solution at room temperature and pressure
rare earth elements lanthanide calcite partition coefficient calcium carbonate
2017/4/11
The rare earth element (REE) partition coefficients between calcite and aqueous solution were obtained experimentally
under the conditions of pH, ionic strength and REE concentration level in the par...
Evaluation of a rapid, effective sample digestion method for trace element analysis of granitoid samples containing acid-resistant minerals: Alkali fusion after acid digestion
silicate digestion method trace element abundance silicate reference material alkali fusion
2017/4/10
Alkali fusion after acid digestion method (AFAD) was used for determination by ICP-MS of twenty-five trace elements
(Rb, Sr, Y, Zr, Nb, Cs, Ba, Hf, Pb, Th, U, and rare earth elements) in four silicat...
THE USE OF CHEMICAL-ELEMENT ADJECTIVAL MODIFIERS IN MINERAL NOMENCLATURE
Schaller modifi er adjectival modifi er chemical suffi x chemical prefi x mineral nomenclature Commission on New Minerals and Mineral Names
2013/12/6
Chemical-element adjectival modifi ers are not part of the name of a mineral species. Schaller-type adjectival modifi ers, which have the endings -oan or -ian, formerly recommended by the CNMMN of the...
Rare earth element geochemistry of waters and suspended particles in alkaline lakes using extraction and sequential chemical methods
rare earth elements alkaline lake dissolved suspended particles sequential chemical extractions
2017/4/11
The concentrations of rare earth elements in the waters and suspended particles from two alkaline lakes in a carbonate
drainage basin of the South China Karst region were determined via ICP-MS. Seque...
Rare earth element geochemistry of waters and suspended particles in alkaline lakes using extraction and sequential chemical methods
rare earth elements alkaline lake dissolved suspended particles sequential chemical extract
2017/4/11
The concentrations of rare earth elements in the waters and suspended particles from two alkaline lakes in a carbonate
drainage basin of the South China Karst region were determined via ICP-MS. Seque...
Boron and other trace element constraints on the slab-derived component in Quaternary volcanic rocks from the Southern Volcanic Zone of the Andes
Andean Arc arc lava boron prompt γ-ray analysis mantle source
2017/4/11
We present a dataset for boron and other trace element contents obtained from samples from 13 volcanoes distributed
along the Quaternary volcanic front of the Southern Volcanic Zone (SVZ) of the Chil...
Sr and Nd isotope ratios and trace element concentrations in kimberlites from Shandong and Liaoning (China) and the Kimberley area (South Africa)
kimberlite Jining Wafangdian geochemistry partial melting model
2017/4/11
Strontium-Neodymium isotopes and 28 elements for Kimberlites from China (Shandong and Liaoning) and from South
Africa (Kimberley area) have been measured to estimate their chemical characteristics an...
TRACE ELEMENT DETERMINATIONS COMPARED WITH X-RAY DIFFRACTION RESULTS OF BROWN CLAY IN THE CENTRAL PACIFIC
BROWN CLAY X-RAY DIFFRACTION THE CENTRAL PACIFIC
2011/11/8
Prior to DSDP Leg 17, no sites drilled in the central Pacific had continuously cored a thick section of pelagic brown clay. On Leg 6 several sites were drilled through brown clay, but poor recovery du...
3D Finite Element Analysis on a 270m Rockfill Dam Based on Duncan-Chang E-B Model
Finite Element Model (FEM) High CFRD Stress Strain
2011/12/21
Since no super high CFRD with dam height more than 233m been ever built in the world, more problems of 270m high CFRD are still to be explored and solved. The 270m extra high Maji CFRD is to be constr...
3D Finite Element Analysis on DongQing CFRD
Concrete Faced Rockfill Dam Finite Element Analysis (FEA) Stress and Deformation
2011/12/20
As a competitive dam style and full of life-force, the concrete- faced rockfill dam (CFRD) is widely used in China in recent years. Experts in China pointed out that “Extra high CFRD generally means t...
3D Finite Element Analysis on ChaHanWuSu CFRD Built on Thick Alluvium Deposits
Alluvium Deposits Concrete Faced Rockfill Dam Finite Element Analysis (FEA)
2011/12/20
As a very popular dam style, more concrete- faced rockfill dams have been built in the world, but there is presently only a few high CFRDs with dam height more than 100m built on thick alluvium deposi...
Effect of organic matrices on the determination of the trace element chemistry (Mg, Sr, Mg/Ca, Sr/Ca) of aragonitic bivalve shells (Arctica islandica) —Comparison of ICP-OES and LA-ICP-MS data
trace elements bivalve shell organics LA-ICP-MS ICP-OES sclerochronology
2017/8/9
The element chemistry of biogenic carbonates can provide important data on past environments. However, the Sr/Ca and Mg/Ca ratios as well as the Mg and Sr concentrations of biological carbonates, espe...