Results 61 to 70 of about 334,683 (251)

The Capo Castello Shear Zone (Eastern Elba Island): Deformation at the Contact between Oceanic and Continent Tectonic Units

Geosciences, 2020
Low-grade mylonitic shear zones are commonly characterized by strain partitioning, with alternating low strain protomylonite and high strain mylonite and ultramylonite, where the shearing is most significant. In this paper the capo Castello shear zone is
Caterina Bianco
doaj   +1 more source

A case study on the stability of a big underground powerhouse cavern cut by an interlayer shear zone in the China Baihetan hydropower plant

Deep Underground Science and Engineering
The big underground powerhouse cavern of the China Baihetan hydropower plant is 438 m long, 34 m wide, and 88.7 m high. It is cut by a weak interlayer shear zone and its high sidewall poses a huge stability problem.
Lifang Zou, Guotao Meng, Jiayao Wu, Wei Fu, Weijiang Chu, Weiya Xu   +5 more
doaj   +1 more source

Geotectonics and Exploration of Gold Mineralization in the Kushaka-Kusheriki Schist Belt North-Central Nigeria

Indonesian Journal of Earth Sciences
The lack of systematic and organized development and exploration for gold and increasing demand for sustainable development goals has prompted the integrated geological, geophysical and geochemical surveys to characterize the gold mineralization at Owu ...
Cyril C. Okpoli, Sunday O. Idakwo, Oladele Olaniyan, Promise E. Chidi   +3 more
doaj   +1 more source

Structural Characterization of the Pan-African Banyo Area (Western Cameroon Domain): Constraints from Field Observations, Structures and AMS

Geosciences
The Banyo area, located in the southern prolongation of the Mayo Nolti shear zone trend, belongs to the western Cameroon domain of the Neoproterozoic Central African Belt (NCAB). It is made of granitic rocks that intrude metamorphic banded rocks.
Alys Calore Mengou, Bertille Edith Bella Nke, Théophile Njanko, Pierre Rochette, Roland Kanse Onana, François Demory, Emmanuel Njonfang   +6 more
doaj   +1 more source

3D gravity modelling of the Aguablanca Stock, tectonic control and emplacement of a Variscan gabbronorite bearing a Ni–Cu–PGE ore, SW Iberia [PDF]

, 2008
The Aguablanca stock is a Variscan mafic pluton located in the Ossa-Morena zone, southern Iberian Massif, hosting an unusual Ni–Cu–PGE mineralization associated with magmatic breccia pipes which intruded its northern part.
Bachiller, Casquet, Dallmeyer, Evans-Lamswood, Forrest, Galindo, I. ROMEO, Liñán, Lunar, Montero, Ortega, Ortega, Piña, Piña, Piña, Quesada, Quesada, Quesada, R. CAPOTE, R. LUNAR, R. TEJERO, Reavy, Ribeiro, Romeo, Santos, Tornos, Vauchez   +26 more
core   +1 more source

The internal structure and composition of a plate-boundary-scale serpentinite shear zone: the Livingstone Fault, New Zealand [PDF]

Solid Earth, 2019
Deciphering the internal structure and composition of large serpentinite-dominated shear zones will lead to an improved understanding of the rheology of the lithosphere in a range of tectonic settings.
M. S. Tarling, S. A. F. Smith, J. M. Scott, J. S. Rooney, C. Viti, K. C. Gordon   +5 more
doaj   +1 more source

Vibrational stability of graphene under combined shear and axial strains

, 2015
We study the vibrational properties of graphene under combined shear and uniaxial tensile strain using density-functional perturbation theory. Shear strain always causes rippling instabilities with strain-dependent direction and wavelength; armchair ...
Cocco, Giulio, Fiorentini, Vincenzo
core   +1 more source

LONG-LIVED STRUCTURAL ENSEMBLES OF THE EAST EUROPEAN PLATFORM. ARTICLE 3. TECTONICS OF THE PLATFORM’S COVER

Известия высших учебных заведений: Геология и разведка, 2018
In the modern structure of the East European platform (EEP) an important role is played by long-lived dislocation zones, complicating the complexes of the platform’s cover and the basement.
S. Y. KOLODYAZHNY
doaj   +1 more source

Gravity-flow dominated sedimentation on the Buda paleoslope (Hungary): Record of Late Eocene continental escape of the Bakony unit [PDF]

, 1992
The Upper Eocene sequence of the Buda Hills consists of fluvial and shallow marine conglomerates, sandstones, bioclastic shallow-water limestone, marlstone and pelagic Globigerina marl.
Fodor, László, Fogarasi, Attila, Kázmér, Miklós, Magyari, Árpád   +3 more
core  

Tests of Dynamical Flux Emergence as a Mechanism for CME Initiation

, 2010
Current coronal mass ejection (CME) models set their lower boundary to be in the lower corona. They do not calculate accurately the transfer of free magnetic energy from the convection zone to the magnetically dominated corona because they model the ...
Amari, Amari, Amari, Antiochos, Antiochos, Arber, Arber, Archontis, Archontis, Athay, Chen, DeVore, DeVore, Emonet, Fan, Fan, Fan, Hildner, James E. Leake, Karpen, Klimchuk, Lynch, Lynch, MacNeice, Magara, Manchester, Mark G. Linton, Roussev, Schuessler, Spiro K. Antiochos, Titov, van der Holst, Zuccarello   +32 more
core   +1 more source