Buscar
Mostrando ítems 1-10 de 351
Ductile Shear Zones
(Elsevier, 2015)
Mylonite with a big delta mantled porphyroclast of K-feldspar in a matrix of quartz, mica and feldspar. Mylonite is derived from a porphyritic granite characterized by large K-feldspar phenocrysts (up to 20 cm long). ...
STRUCTURAL, LITHOLOGIC, AND MAGMATIC CHARACTERISTICS OF THE TRAÍRAS DUCTILE SHEAR ZONE, NIQUELÂNDIA COMPLEX BLOCK, GOIÁSCARACTERÍSTICAS ESTRUTURAIS, LITOLÓGICAS E MAGMÁTICAS DA ZONA DE CISALHAMENTO DÚCTIL DO RIO TRAÍRAS, BLOCO DO COMPLEXO DE NIQUELÂNDIA, GOIÁS
(Sociedade Brasileira de Geologia, 2017)
Control of Shear-Zone-Induced Pressure Fluctuations on Gold Endowment: The Giant El Callao District, Guiana Shield, Venezuela
(MDPI AG, 2018)
The El Callao district, with a total endowment of more than 2000 t Au, is considered to be the
most prolific gold resource in Venezuela. Mineralization is hosted by a vein system that is genetically
associated with the ...
Mid-cretaceous crustal shortening: evidence from a regional-scale ductile shear zone in the costal range of central chile (32 degrees s)
(PERGAMON-ELSEVIER SCIENCE LTD,, 2004)
Synkinematic interplay between felsic dykes and host rock mylonitization: how magmatism assists the formation of ductile narrow shear zones in the Sierra Chica de Córdoba, Argentina
(Pergamon-Elsevier Science Ltd, 2021-03-09)
This study provides new insights about mechanisms of synkinematic interplay between dyking emplacement and ductile narrow shear zones formation in the Sierra Chica de Córdoba. A detailed analysis of structural, microstructural, ...
Tectonic setting and U/Pb zircon dating of the plutonic Socorro Complex in the Transpressive Rio Paraíba do Sul Shear Belt, SE Brazil
(1996-06-01)
The Precambrian Rio Paraíba do Sul Shear Belt comprises a 200-km-wide anastomosing network of NE-SW trending ductile shear zones extending over 1000 km of the southeastern coast of Brazil. Granulitic, gneissic-migmatitic, ...
Tectonic setting and U/Pb zircon dating of the plutonic Socorro Complex in the Transpressive Rio Paraíba do Sul Shear Belt, SE Brazil
(1996-06-01)
The Precambrian Rio Paraíba do Sul Shear Belt comprises a 200-km-wide anastomosing network of NE-SW trending ductile shear zones extending over 1000 km of the southeastern coast of Brazil. Granulitic, gneissic-migmatitic, ...
Structure and tectonic significance of high-and low-temperature deformation along the lateral escape-related guaçuí and batatal shear zones, Southern Araçuaí Orogen (Southeastern Brazil)
(2020-10-01)
The Guacuí and Batatal lineaments in the southern region of the state of Es-pírito Santo (southeastern Brazil) can be traced from satellite images for tens of kilometers. They are considered shear zones associated to the ...
Dating recurrent shear zone activity and the transition from ductile to brittle deformation: white mica geochronology applied to the neoproterozoic Don Feliciano Belt in South Brazil
(Pergamon-Elsevier Science Ltd, 2020-09-22)
Argon geochronology of white mica has a good potential of recording recurrent dynamic recrystallization in shear zones in the transition from ductile to brittle deformation, as temperature ranges for mineral crystallization ...
Tectonica do Complexo Varginha na regiao de Sao Joao da Boa Vista (SP)
(1990-12-01)
Migmatites, high-grade gneisses and granitoids represent the most important Precambrian rocks of Sao Joao da Boa Vista region. Structures are interpreted as due to low-angle oblique non-coaxial ductile shear, developed ...