Results 111 to 120 of about 23,165 (232)

Two-sided asymmetric subduction; implications for tectonomagmatic and metallogenic evolution of the Lut Block, Eastern Iran [PDF]

open access: yes, 2011
West directed subduction zones show common characteristics, such as low structural elevation, deep trench, steep slab and a conjugate back-arc basin that are opposite to those of the east directed subduction zones.
Arjmandzadeh, R.   +5 more
core   +2 more sources

Mid amphibolite facies metamorphism of harzburgites in the Neoproterozoic Cerro Mantiqueiras Ophiolite, southernmost Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2003
Valuable information is retrieved from the integrated investigation of the field relationships, microstructure and mineral compositions of harzburgites from the Neoproterozoic Cerro Mantiqueiras Ophiolite. This important tectonic marker of the geological
HARTMANN LÉO A., CHEMALE-JÚNIOR FARID
doaj  

The Pikwitonei granulite domain: A lower crustal level along the Churchill-Superior boundary in central Manitoba [PDF]

open access: yes
The greenschist to amphibolite facies tonalite-greenstone terrain of the Gods Lake subprovince grades - in a northwesterly direction - into the granulite facies Pikwitonei domain at the western margins of the Superior Province.
Weber, W.
core   +1 more source

Garnet (Almandine-Spessartine) Growth Zoning and Its Application to Constrain Metamorphic History in Dehsalm Complex, Iran [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2006
Dehsalm Metamorphic Complex located in east of Iran consists of regionally metamorphosed rocks intruded by three phases of granitic masses. Synkinematic porphyroblasts of garnet from staurolite-garnet schist present well preserved growth zoning. Electron
doaj  

Nature and origin of fluids in granulite facies metamorphism [PDF]

open access: yes
The various models for the nature and origin of fluids in granulite facies metamorphism were summarized. Field and petrologic evidence exists for both fluid-absent and fluid-present deep crustal metamorphism.
Newton, R. C.
core   +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

Geochemistry of granitoid rocks from the western Superior Province: Evidence for 2- and 3-stage crustal evolution models [PDF]

open access: yes
The Superior Province is divisible into subprovinces that can be classified as greenstone-tonalite, paragneiss, or batholitic terranes and are distinguished by differences in lithologic proportions, metamorphic grade, and structural style. The origin and
Beakhouse, G. P., errane) are discussed.
core   +1 more source

Waste Powder Biotite as a Factor Enhancing the Flexural Strength of RPC. [PDF]

open access: yesMaterials (Basel)
Grzeszczyk S   +4 more
europepmc   +1 more source

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