Results 101 to 110 of about 10,594 (229)

Estimation of three-dimensional internal structures of some barred olivine chondrules in Allende (CV3) chondrite [PDF]

open access: yes, 2002
Three-dimensional internal structures of four BO chondrules in Allende were studied by stacking backscattered electron image photographs of their successive cross sections, which were taken by polishing very carefully these chondrules embedded in epoxy ...
Takaaki Noguchi
core   +1 more source

The Moho as a magnetic boundary [PDF]

open access: yes
Magnetic data are presented for mantle derived rocks: peridtites from St. Pauls rocks, dunite xenoliths from the kaupulehu flow in Hawaii, as well as peridolite, dunite and eclogite xenoliths from Roberts Victor, Dutoitspan, Kilbourne Hole, and San ...
Mayhew, M. A.   +2 more
core   +1 more source

Occurrences of metamorphosed ultramafic rock and associating rocks in Howard Hills, Enderby Land, East Antarctica: Evidence of partial melting from geochemical and isotopic characteristics [PDF]

open access: yes, 2004
Large blocks of metamorphic rocks with mafic to ultramafic compositions were discovered in felsic gneiss at the central part of northern Howard Hills in Enderby Land.
Christopher J. Carson   +5 more
core   +1 more source

Geochemistry of sapphirine-apatite-calcite-bearing gabbroic dykes from the Finero Phlogopite Peridotite (Ivrea-Verbano Zone): evidence for multistage interaction with the ambient peridotite [PDF]

open access: yes, 2016
The Finero Phlogopite-Peridotite (FPP) is a mantle unit outcropping in the northernmost tip of the Ivrea-Verbano Zone (IVZ, Southern Alps). It shows a virtually complete recrystallization due to pervasive to channelled melt migration.
Alberto, Zanetti   +4 more
core  

Dielectric response of humid phlogopite

open access: yesBulletin of Materials Science, 1989
The dielectric response of phlogopite mica has been measured for frequency lying between 10 mHz and 10 kHz with humidity as a parameter. The measured complex capacitance shows a low frequency dispersion (LFD) at high humidities. A weak loss peak is also present at high frequencies and low humidity levels.
openaire   +2 more sources

Hybridization of magmas above subducted oceanic crust [PDF]

open access: yes, 1984
Hydrous siliceous melts rising from subducted oceanic crust may experience hybridization with overlying peridotite. Products of hybridization have been explored in the synthetic system KAlSiO_4-MgO-SiO_2-H_2O.
Sekine, Toshimore, Wyllie, Peter J.
core  

Barium feldspar from Pukkiharju base-metal mineralization, central Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 1987
R. Lahtinen, B. Johanson
doaj   +1 more source

Fractional crystallization of high-K arc magmas: biotite- versus amphibole-dominated fractionation series in the Dariv Igneous Complex, Western Mongolia [PDF]

open access: yes, 2014
Many studies have documented hydrous fractionation of calc-alkaline basalts producing tonalitic, granodioritic, and granitic melts, but the origin of more alkaline arc sequences dominated by high-K monzonitic suites has not been thoroughly investigated ...
Bucholz, Claire E.   +3 more
core   +2 more sources

Oxidative capacity of magmatic components [PDF]

open access: yes
Oxidative capacity of magmatic ...
Mueller, R. F.
core   +1 more source

First evidence of lamprophyric magmatism within the Subbetic Zone (Southern Spain)

open access: yesGeologica Acta, 2010
Two drillings carried out at Cerro Prieto (Province of Málaga), together with additional geophysical data, revealed the existence of an igneous body formed of rock-types previously unknown in the Subbetic zone.
E. PUGA   +7 more
doaj  

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