Results 71 to 80 of about 1,123,502 (206)

MINERALOGY OF OLIVINE ROCKS AND CONDITIONS OF THEIR FORMATION (ZHOKHOV ISLAND, NEW SIBERIAN ISLANDS, RUSSIA) [PDF]

Минералогия
This paper is dedicated to results of microscopic study of minerals from xenoliths of mantle spinel lherzolites in Cenozoic basaltoids of Zhokhov Island (New Siberian Islands, Russia) using microanalysis and Raman spectroscopy, as well as the assessment ...
N.I. Ponomareva, L.P. Nikitina, V.N. Bocharov, N.S. Vlasenko, S.Y. Yanson, V.F. Proskurnin, A.N. Sirotkin, N.M. Stolbov   +7 more
doaj   +1 more source

Diffusion of Ti and some Divalent Cations in Olivine as a Function of Temperature, Oxygen Fugacity, Chemical Potentials and Crystal Orientation [PDF]

, 2016
International audienceThe diffusion of titanium along with Ni, Co and Mn in pure synthetic forsterite has been studied as a function of temperature, oxygen fugacity, crystallographic orientation and chemical potentials in the four-component system MgO ...
St O'Neill, H.C., Spandler, C., Jollands, M.C., Padron Navarta, Jose Alberto, Padrón-Navarta, J. A., O'Neill, H. St. C., Hermann, J., Hermann, Jörg, O'Neill, H.St.C., Padrón-Navarta, J.A., Jollands, M. C., O’Neill, H. St. C.   +11 more
core   +1 more source

Building the Andean Crust at ∼35°S: Arc Geochemistry Reveals Cretaceous Thinning and Rapid Neogene Thickening

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Quantification of the timing and mechanisms of crustal thickening in Cordilleran orogenic hinterlands remains challenging. We address this in the Andes using whole‐rock geochemistry and zircon petrochronology from a >70 Myr volcanic record in the Tinguiririca valley of Chile (∼35° ${}^{\circ}$S), which captures a pivotal transition from ...
Chance B. Ronemus, Caden J. Howlett, Peter G. DeCelles, Barbara Carrapa, Andrés Echaurren, Matías Barrionuevo, Jesse G. Mosolf, Michelle L. Foley, Mihai N. Ducea   +8 more
wiley   +1 more source

Structural Responses of Aluminoborosilicate Glasses to Pressure and Iodine Incorporation: An Advanced NMR Investigation

Journal of the American Ceramic Society, Volume 109, Issue 9, September 2026.
Pressure densifies the glass network and enhances iodine retention, while iodine promotes local repolymerization of the silicate network. ABSTRACT Iodine‐129 is a critical challenge for nuclear waste immobilization due to its high mobility and extremely long half‐life (1.57 × 107 years).
Hanyu Hu, Sami Soudani, Yann Morizet, Michael Paris, Thibault Charpentier   +4 more
wiley   +1 more source

APG2: a New Version of APG, an Application for Amphibole-Plagioclase Geothermobarometry [PDF]

Journal of Sciences, Islamic Republic of Iran, 2016
APG2 is a computer application designed for amphibole-plagioclase geothermobarometry. It is the first updated version of APG and supports 4 thermometer models and 6 barometer models involving either amphibole-plagioclase or amphibole only.
M. Sayari
doaj  

Nature, origin, and phosphorylation potential of the phosphorus/sulfur‐bearing nanoscale multiphasic assemblages in the CM chondrites Murchison and Murray

Meteoritics &Planetary Science, Volume 61, Issue 9, Page 2303-2335, September 2026.
Abstract Carbonaceous chondrites contain phosphorus, whose speciation and thus history remain to be investigated. Phosphorus/sulfur‐bearing assemblages have been reported in carbonaceous CM chondrites, but there is no consensus about their exact compositions and origins.
Valentine Megevand, Sylvain Bernard, Corentin Le Guillou, Roberto Conconi, François Guyot   +4 more
wiley   +1 more source

Variscan thrusting in I- and S-type granitic rocks of the Tribeč Mountains, Western Carpathians (Slovakia): evidence from mineral compositions and monazite dating

Geologica Carpathica, 2015
The Tribeč granitic core (Tatric Superunit, Western Carpathians, Slovakia) is formed by Devonian/Lower Carboniferous, calc-alkaline I- and S-type granitic rocks and their altered equivalents, which provide a rare opportunity to study the Variscan ...
Broska Igor, Petrík Igor
doaj   +1 more source

The transition from carbonatitic to carbonate-silicate magmas in carbonated eclogite rocks as function of pressure, temperature, and oxygen fugacity

, 2017
The deep carbon cycle and the origin of carbonatitic melts into the Earth’s mantle have been studied through the effect of CO2 on phase equilibria within carbonated eclogitic assemblage in the last decades. However the effect of temperature (T), pressure
Vincenzo Stagno, Marco Caruso
core  

The next generation of oxy-fuel boiler systems [PDF]

, 2005
Research in the area of oxy-fuel combustion which is being pioneered by Jupiter Oxygen Corporation combined with boiler research conducted by the USDOE/Albany Research Center has been applied to designing the next generation of oxy-fuel combustion ...
Patrick, Brian (Jupiter Oxygen Corp.), Summers, Cathy A., Ochs, Thomas L., Gross, Alex (Jupiter Oxygen Corp.), Turner, Paul C., Oryshchyn, Danylo B.   +5 more
core  

Apparatus for simultaneously measuring electrical conductivity and oxygen fugacity [PDF]

, 1978
Electrical conductivity studies of silicates are useful in determining temperature vs depth in the earth. Realistic laboratory measurements of conduction mechanisms require that exact determinations of oxygen fugacity (fo{sub 2}) be made in the ...
Netherton, R., Duba, A.
core   +1 more source