نتایج جستجو برای: alkali basalt

تعداد نتایج: 19800  

Journal: :Advances in Materials Science and Engineering 2022

The lunar soil is an ideal building material for future base construction. In order to improve the strength of soil, basalt with similar composition was used simulate due lack real and simulated reinforced sodium silicate. study direct shear mechanical properties by silicate solidification, a series tests SEM microstructure were carried out, stress-displacement whole process curve obtained. Inf...

2008
Michael J. Oard

O are claimed to be pieces of ocean crust and upper mantle that have been thrust up onto continental crust and are now found in mountains, mainly along continental margins.1,2 An ideal ophiolite suite consists from bottom to top of peridotite, gabbro, sheeted dikes, basalt with pillow lavas and sedimentary rocks. The peridotite is considered to be an upper mantle rock, while the remainder of th...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
David S Goldberg Dennis V Kent Paul E Olsen

Identifying locations for secure sequestration of CO(2) in geological formations is one of our most pressing global scientific problems. Injection into basalt formations provides unique and significant advantages over other potential geological storage options, including large potential storage volumes and permanent fixation of carbon by mineralization. The Central Atlantic Magmatic Province ba...

2004
Boris V. Yakshinskiy Theodore E. Madey

We report recent results in an investigation of source mechanisms for the origin of Na atoms in tenuous planetary atmospheres, focusing on non-thermal processes. Experiments include photon stimulated desorption (PSD), electron stimulated desorption (ESD), and ion sputtering of Na atoms from the surface of a lunar basalt sample. Bombardment of the sodium covered surface by 3 keV Ar+ ions removes...

2016
Jianhua Zou Heming Tian Tian Li

Coal-bearing strata that host rare metal deposits are currently a hot issue in the field of coal geology. The purpose of this paper is to illustrate the mineralogy, geochemistry, and potential economic significance of rare metals in the late Permian tuff in Zhongliangshan mine, Chongqing, southwestern China. The methods applied in this study are X-ray fluorescence spectrometry (XRF), inductivel...

2004
E. D. Ghent

Cratonic mantle eclogite xenoliths occur with diamond-bearing kimberlite. The modes and mineral compositions of eclogite contain important information on their origin, physical-chemical conditions of formation, and their geophysical properties. We have used the pseudosection option of the program PERPLEX to explore how mineral assemblage, abundance, and composition vary with bulk composition, t...

Journal: :Seikei kakou 2021

2017
Ebbe N. Bak Michael G. Larsen Ralf Moeller Silas B. Nissen Lasse R. Jensen Per Nørnberg Svend J. K. Jensen Kai Finster

The habitability of Mars is determined by the physical and chemical environment. The effect of low water availability, temperature, low atmospheric pressure and strong UV radiation has been extensively studied in relation to the survival of microorganisms. In addition to these stress factors, it was recently found that silicates exposed to simulated saltation in a Mars-like atmosphere can lead ...

2008
R. V. Morris G. Klingelhöfer C. Schröder I. Fleischer D. W. Ming A. S. Yen R. Gellert R. E. Arvidson D. S. Rodionov L. S. Crumpler B. C. Clark B. A. Cohen T. J. McCoy D. W. Mittlefehldt M. E. Schmidt P. A. de Souza S. W. Squyres

[1] Spirit’s Mössbauer (MB) instrument determined the Fe mineralogy and oxidation state of 71 rocks and 43 soils during its exploration of the Gusev plains and the Columbia Hills (West Spur, Husband Hill, Haskin Ridge, northern Inner Basin, and Home Plate) on Mars. The plains are predominantly float rocks and soil derived from olivine basalts. Outcrops at West Spur and on Husband Hill have expe...

2008
R. V. Morris G. Klingelhöfer C. Schröder I. Fleischer D. W. Ming A. S. Yen R. Gellert R. E. Arvidson D. S. Rodionov L. S. Crumpler B. C. Clark B. A. Cohen T. J. McCoy D. W. Mittlefehldt M. E. Schmidt P. A. de Souza S. W. Squyres

[1] Spirit’s Mössbauer (MB) instrument determined the Fe mineralogy and oxidation state of 71 rocks and 43 soils during its exploration of the Gusev plains and the Columbia Hills (West Spur, Husband Hill, Haskin Ridge, northern Inner Basin, and Home Plate) on Mars. The plains are predominantly float rocks and soil derived from olivine basalts. Outcrops at West Spur and on Husband Hill have expe...

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