Results 31 to 40 of about 37,639 (216)

Mineralogical Characterization of Baptistina Asteroid Family: Implications for K/T Impactor Source

, 2011
Bottke et al. (2007) linked the catastrophic formation of Baptistina Asteroid Family (BAF) to the K/T impact event. This linkage was based on dynamical and compositional evidence, which suggested the impactor had a composition similar to CM2 carbonaceous
Candal, Alvaro Alvarez, Carvano, Jorge M., Cloutis, Edward A., Diniz, Thais Mothé, Gaffey, Michael J., Kelley, Michael S., Lazzaro, Daniela, Michtchenko, Tatiana A., Moskovitz, Nicholas A., Reddy, Vishnu, Ryan, Erin L.   +10 more
core   +1 more source

Emergent 1/3 magnetization plateaus in pyroxene CoGeO_{3}

Physical Review Research, 2021
Despite the absence of an apparent triangular pattern in the crystal structure, we observe unusually well-pronounced 1/3 magnetization plateaus in the quasi-one-dimensional Ising spin chain compound CoGeO_{3} which belongs to the class of pyroxene ...
H. Guo, L. Zhao, M. Baenitz, X. Fabrèges, A. Gukasov, A. Melendez Sans, D. I. Khomskii, L. H. Tjeng, A. C. Komarek   +8 more
doaj   +1 more source

Anisotropy study of multiferroicity in the pyroxene NaFeGe2O6

New Journal of Physics, 2015
We present a study of the anisotropy of the dielectric, magnetic and magnetoelastic properties of the multiferroic clinopyroxene NaFeGe _2 O _6 . Pyroelectric currents, dielectric constants and magnetic susceptibilities as well as the thermal expansion ...
M Ackermann, L Andersen, T Lorenz, L Bohatý, P Becker   +4 more
doaj   +1 more source

Theoretical Spectra of Terrestrial Exoplanet Surfaces [PDF]

, 2012
We investigate spectra of airless rocky exoplanets with a theoretical framework that self-consistently treats reflection and thermal emission. We find that a silicate surface on an exoplanet is spectroscopically detectable via prominent Si-O features in ...
Batalha, Best, Bethany L. Ehlmann, Borucki, Borucki, Cheek, Clark, Clark, Cochran, Cowan, de Pater, Drilling, Farmer, Gautier, Koch, Miller-Ricci, Muirhead, Pieters, Pieters, RELAB Spectral Database, Renyu Hu, Rogers, Salisbury, Sara Seager, Seager, Seager, Sobolev, Sprague, Winn   +28 more
core   +2 more sources

KIMBERLITE-LIKE ROCKS OF THE URIK-IYA GRABEN, EASTERN SAYAN REGION: MINERAL COMPOSITION, GEOCHEMISTRY AND FORMATION CONDITIONS

Геодинамика и тектонофизика, 2020
The study of the Bol’shaya Tagna alkaline-carbonatite massif and adjacent areas was focused on the mineral and chemical compositions of minerals, the distribution of petrogenic and trace elements in pyroxene-free alkaline picrites in veins and dikes ...
V. B. Savel'eva, Yu. V. Danilova, E. P. Bazarova, B. S. Danilov   +3 more
doaj   +1 more source

Lunar Terrestrial Analog Experiment on the Spectral Interpretations of Rocks Observed by the Yutu-2 Rover

Remote Sensing, 2022
A visible and near-infrared imaging spectrometer (VNIS) loaded by the Chang’e-4 rover is the primary method for detecting the mineral composition of the lunar surface in the landing region.
Rui Chang, Wei Yang, Honglei Lin, Rui Xu, Sheng Gou, Rong Wang, Yangting Lin   +6 more
doaj   +1 more source

Spectral, mineralogical, and geochemical variations across Home Plate, Gusev Crater, Mars indicate high and low temperature alteration [PDF]

, 2009
Over the last ~ 3 years in Gusev Crater, Mars, the Spirit rover observed coherent variations in color, mineralogy, and geochemistry across Home Plate, an ~ 80 m-diameter outcrop of basaltic tephra.
Arvidson, R. E., de Souza, P. A., Jr., Des Marais, D. J., Farrand, W. H., Hurowitz, J. A., Johnson, J. R., Lewis, K. W., McCoy, T. J., Ming, D. W., Ruff, S. W., Schmidt, M. E., Schröder, C., Squyres, S. W.   +12 more
core   +1 more source

Study on the composite fracture characteristics of filling and reinforcing cracked rock mass after high temperature damage

Deep Underground Science and Engineering, EarlyView.
Cement infill shares compressive and shear stresses during loading, while interfacial friction hinders crack propagation and reduces stress concentration, improving the rock's load‐bearing capacity. Failure modes vary with crack inclination. Unfilled specimens show four modes.
Shihao Yuan, Qiang Sun, Jianjun Hu, Liwei Zhang, Jishi Geng   +4 more
wiley   +1 more source

Preparation of High Strength Ceramic Materials from Titanium-bearing Blast Furnace Slags

Kuangchan zonghe liyong
This is an article in the field of mineral materials. In order to explore the large-scale and high-value application of titanium-containing blast furnace slags in the ceramic field, through the design based on CaO-SiO2-MgO(15%)-Al2O3 phase diagram, and ...
Shuqin LI, Shaoguang HUA, Xiangmei LI, Dejian PEI, Daya WANG   +4 more
doaj   +1 more source

Application of X-ray Diffraction, X-ray Fluorescence Spectrometry and Electron Microprobe in the Identification of Basalt

Yankuang ceshi, 2015
Basalt identification is usually performed by microscope, so the appraisal results are easily influenced by personal professional level and subjective factors.
XU Nai-cen, SHEN Jia-lin, ZHANG Jing
doaj   +1 more source