Results 81 to 90 of about 10,884 (225)

Usefulness of porphyry and amphibolites as a component of concrete for airfield pavements

open access: yesMATEC Web of Conferences, 2018
Coarse aggregate used as part of cement concrete is of primary significance for the obtained parameters of hardened concrete. In case of concretes intended for airfield pavements, the application of granite grit is recommended.
Linek Małgorzata   +3 more
doaj   +1 more source

Transitional amphibolite-granulite facies granites, diorites and metavolcanic amphibolites in the Isukasia map sheet, southern West Greenland

open access: yesRapport Grønlands Geologiske Undersøgelse, 1982
Detailed mapping of the north-west quadrant of the 1: 100 000 scale Isukasia geological map sheet was begun in 1981 (fig. 16). The area was previously visited during the 1977 helicopter reconnaissance mapping programme (Allaart et al., 1978) and from this work the stratigraphy was known only in the broadest of terms.
R.P Hall, D.J Hughes
openaire   +2 more sources

Structural geology investigation in the republics of Dahomey and Togoland, Africa, using ERTS-1 multi-spectral images [PDF]

open access: yes
The author has identified the following significant results. Recent geological studies in the Republics of Dahomey and Togoland put in light a new chronology and propose a schema indicating that the structural geology of this region is very complicated ...
Weecksteen, G.
core   +1 more source

Geochemistry of the Görcsöny Ridge amphibolites (Tisza Unit, SW Hungary) and its geodynamic consequences

open access: yesGeologia Croatica, 2014
The Görcsöny Ridge is part of the complicated Variscan metamorphic basement of the SW Tisza plate. It was penetrated by several wells, one of which (Baksa-2) explored 1200 m borecore available for petrological examination.
Tivadar M. Toth
doaj   +1 more source

Archean metamorphic sequence and surfaces, Kangerdlugssuaq Fjord, East Greenland [PDF]

open access: yes
The characteristics of Archean metamorphic surfaces and fabrics of a mapped sequence of rocks older than about 3000 Ma provide information basic to an understanding of the structural evolution and metamorphic history in Kangerdlugssuaq Fjord, east ...
Kays, M. A.
core   +1 more source

El contacto entre las zonas de Ossa Morena y Sudportuguesa. Características y significado de la banda metamórfica de Aracena, en su sector central entre Aroche y Aracena (Huelva) [PDF]

open access: yes, 2004
El contacto entre las zonas de Ossa Morena y Sudportuguesa está subrayado por la banda metamórfica de Aracena. Las características principales de esta región del macizo Ibérico pueden considerarse desde distintos puntos de vista: litológico, estructural,
Castro, A.   +5 more
core   +1 more source

Controls of Soil Spatial Variability in a Dry Tropical Forest.

open access: yesPLoS ONE, 2016
We examined the roles of lithology, topography, vegetation and fire in generating local-scale (
Sandeep Pulla   +4 more
doaj   +1 more source

Quartz isolatings in the shales and amphibolites of the East-Ufalei zone as a source for the production of high-purity quartz raw materials (Southern Urals)

open access: yesЛитосфера, 2019
Research subject. In this research, we studied lenses, nodules and interlayers of granulated quartz, which are located in amphibolites and shales in the eastern part of the Ufalei gneso-amphibolite complex.Materials and methods.
M. A. Igumentseva   +5 more
doaj   +1 more source

Characterization of potential sources of magnetic anomalies within the crust in a tectonically active region: Amphibolites and migmatites from Potrillo Maar, New Mexico [PDF]

open access: yes
The purpose was to characterize the oxide mineralogy and petrology of samples collected from Potrillo Maar, New Mexico with the goal of explaining the magnetic anamoly that is observed over this region from remote sensing.
Padovanni, E., Spear, F. S.
core   +1 more source

The Amphibolites of the Costeiro Complex in the São Sebastião Region, SP [PDF]

open access: yesGeologia USP. Série Científica, 2009
Geochronological, petrographic and lithochemical data have been used to characterize the crustal evolution and thethermochronology of the Costeiro Complex, São Paulo State, Brazil. This part of the Ribeira Fold Belt is composed ofparaderived rocks to the
Coriolano de Marins e Dias Neto   +3 more
doaj  

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