Results 101 to 110 of about 4,204 (206)

Chlorite composition and geothermometry: a comparative HRTEM/AEM-EMPA-XRD study of Cambrian basic lavas from the Ossa Morena Zone, SW Spain [PDF]

open access: yes, 2002
15 páginas, 8 figuras, 4 tablasChlorites from Cambrian basaltic vesicular lavas, characterized by relatively high Xc (0.81–0.98), gave temperatures of formation of 285 to 350°C (Cathelineau’s empirical geothermometer).
López-Munguira, Aurora   +2 more
core   +1 more source

Missing salts on early Mars [PDF]

open access: yes, 2009
Our understanding of the role of water on Mars has been profoundly influenced over the past several years by the detection of widespread aqueous alteration minerals.
Fischer, W. W.   +2 more
core  

Grain surface features and clay mineralogy of the quaternary sediments from Western Deccan Trap Region, India, and their palaeoclimatic significance [PDF]

open access: yesActa Geographica Debrecina. Landscape & Environment Series, 2011
Quartz sand grains obtained from a deeply gullied topography along the banks of two tributaries of River Pravara in Maharashtra (India) have been examined with a scanning electron microscope (SEM).
Veena U. Joshi
doaj  

The spectroscopic, chemical, and photophysical properties of Martian soils and their analogs (MERC, phase 2) [PDF]

open access: yes
A series of variably proportioned iron/calcium smectite clays and iron loaded smectite clays containing iron up to the level found in the Martian soil were prepared from a typical montomorillonite clay using the Banin method.
Banin, Amos, Orenberg, James
core   +1 more source

Mineralogy and fluvial history of the watersheds of Gale, Knobel, and Sharp craters: A regional context for the Mars Science Laboratory Curiosity's exploration [PDF]

open access: yes, 2015
A 500 km long network of valleys extends from Herschel crater to Gale, Knobel, and Sharp craters. The mineralogy and timing of fluvial activity in these watersheds provide a regional framework for deciphering the origin of sediments of Gale crater's ...
Buz, Jennifer, Ehlmann, Bethany L.
core   +2 more sources

PECULIARITIES OF THE STRUCTURE, MORPHOLOGY, AND ACID-BASIC PROPERTIES OF THE ALUMOSILICATE SURFACE OF HOTYNETSKY DEPOSITS

open access: yesКонденсированные среды и межфазные границы, 2018
. The paper presents the results of a systematic study of the physical, chemical, and structural geometrical characteristics of Hotynetsky aluminosilicate deposits.
Eugene N. Gribanov   +2 more
doaj   +1 more source

Field trip guide and abstracts of the sepiolite symposium : june 7th, 2010, Madrid-Seville, Spain /2010 SEA-CSSJ-CMS Trilateral Meeting on Clays [PDF]

open access: yes, 2010
Depto. de Mineralogía y PetrologíaFac.
Cuevas, Jaime, ed. lit.   +4 more
core  

Evolved Gas Analyses of Mudstones from the Vera Rubin Ridge [PDF]

open access: yes
The Sample Analysis at Mars (SAM) instrument suite on the Mars Science Laboratory (MSL) rover has been essential in understanding volatile-bearing phases in Gale Crater materials. SAMs evolved gas analysis mass spectrometry (EGA-MS) has detected H2O, CO2,
Achilles, C. N.   +17 more
core   +1 more source

Anaerobic methane-oxidizing activity in a deep underground borehole dominantly colonized by Ca. Methanoperedenaceae. [PDF]

open access: yesEnviron Microbiol Rep, 2023
Nishimura H   +7 more
europepmc   +1 more source

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