Instituto Geológico Minero y Metalúrgico (Perú): últimos ingresos
Mostrando ítems 1181-1200 de 4191
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Geodiversidad en la Reserva Nacional de Paracas: alternativa de geoturismo
(Sociedad Geológica del PerúPE, 2016)La Reserva Nacional de Paracas es la única reserva marino-costera de Perú que incluye porciones de mar en su territorio. Posee características especiales de flora y fauna, siendo refugio de aves migratorias. El turismo ... -
Mapa metalogenético del Perú 2008: herramienta esencial para las exploraciones mineras
(Sociedad Geológica del PerúPE, 2008)Los resultados de las investigaciones geológicas-económicas del INGEMMET, conjuntamente con la información de revistas especializadas, han permitido elaborar una nueva versión del Mapa Metalogenético del Perú a escala ... -
The lithosphere of Southern Peru: A result of the accretion of allochthonous blocks during the Mesoproterozoic
(IRD ÉditionsFRA, 2008)Southern Peru exhibits different juxtaposed structural blocks. These blocks have a distinct sedimentary, tectonic and magmatic evolution. They are bounded by complex, mainly NW-SE fault systems, locally marked by Cenozoic ... -
Compressive active fault systems along the Central Andean piedmont
(IRD ÉditionsFRA, 2008)It’s now established that Andean forearc is not concentrating as much tectonic shortening as the foreland since Middle Miocene. GPS measurements are neither available to inform on the long-term deformation across the Andes ... -
Stratigraphy of the synorogenic Cenozoic volcanic rocks of Cajamarca and Santiago de Chuco, northern Peru
(IRD ÉditionsFRA, 2008)Cenozoic volcanic deposits that cap the Western Cordillera of Northern Peru originally were mapped as one unit called “Volcánicos Calipuy” by Cossío (1964). Later studies (Reyes, 1980; Cobbing, 1981; Wilson, 1984) used the ... -
The Cordillera Blanca fault system as structural control of the Jurassic-Cretaceous basin in central-northern Peru
(IRD ÉditionsFRA, 2008)Many works related to the Cordillera Blanca fault system exist (e.g. Bonnot, 1984; McNulty and Farber, 2002). These studies were mainly in the central part of the Cordillera Blanca fault, between northern Yungay and southern ... -
Block rotations within the northern Peruvian Altiplano
(IRD ÉditionsFRA, 2008)Counterclockwise tectonic rotations in the northern central Andes and clockwise rotations in the southern Central Andes have been systematically reported (see Roperch et al. 2006 and Arriagada et al., 2006 for a recent ... -
From steady state to climate-driven denudation across the Central Andes in SE Peru
(IRD ÉditionsFRA, 2008)To better constrain the orogenic growth of the Andean chain, we investigated the time-Temperature paths of bedrocks from the two morpho-structural highs of the Central Andes that are separated by the vanishing Altiplano, ... -
Neogene ignimbrites and volcanic edifices in southern Peru: Stratigraphy and time-volume-composition relationships
(IRD ÉditionsFRA, 2008)In the Central Andes of Peru, four volcanic arcs, termed Tacaza, Lower and Upper Barroso, and Frontal arc, have been active over the past 30 Ma (Fig. 1). They form five units between Moquegua and Nazca (14°30– 17°15’°S and ... -
The Proterozoic basement of the Arequipa massif, southern Peru: Lithologic domains and tectonics
(IRD ÉditionsFRA, 2008)The Proterozoic rocks outcrops along the southern coast of Peru, on the margin of the Pacific Ocean and extends in the Western Cordillera of the Andes, forming a major exhibition of pre-Andean rocks where tectonothermal ... -
Paleogeographie, structural and magmatic evidences for the existence of different lithospheric blocks in the Central Andes: samples from southern Peru and northern Chile
(IRD ÉditionsFRA, 2005)The Andes are classically considered to represent the type of orogenie chains resulting from the subduction of an oceanic plate beneath a continental plate. In spite of a considerable literature invoJving stratigraphie, ... -
The Matalaque Formation of southern Peru: new stratigraphie and geochemieal data
(IRD ÉditionsFRA, 2005)The Matalaque Formation crops out in the Western Cordillera of Southern Peru between 16°20' y 17°45 ' South Latitud. It was described initially by Marocco and del Pino (1966) in the lchufia sheet (department of Moquegua), ... -
Oligocene-Neogene tectonics and sedimentation in the forearc of southern Peru, Tacna area (17.5°-18.5°5)
(IRD ÉditionsFRA, 2005)Fault systems observed in the southernmost Peruvian forearc (Tacna area) provide information on the structure of the inner Bolivian Orocline (Arica elbow). Here we present the characteristics of the main fault systems ... -
The Late Paleozoic - Early Mesozoic Chocolate Formation of southern Peru: new data and interpretations
(IRD ÉditionsFRA, 2005)The Chocolate Formation is exposed in southern Peru between the cities of Nazca and Tacna, mostly in the Pacifie slopes of the Cordillera Occidental and along the coast. This lithostratigraphic unit was initially described ... -
Characterisation of the Cenozoic volcanism in northern Peru (7°45'9° QQ's; 78°QQ'-78°45'w)
(IRD ÉditionsFRA, 2005)ln northern Peru, along Andean Cordillera outcropping volcanic and volcanoclastics deposits of ~3000 m thick, emplaced during the subaerial volcanism occurred between 53 - 14,6 Ma. (Wilson, 1975; Farrar & Noble, 1976), it ... -
An aborted rift process of Aptian-Albian age in central Peru, and its significance for the margin geodynamics
(IRD ÉditionsFRA, 2005)Early studies between 1924 and 1970 in the Peruvian Central Andes described a volcano-sedimentary sequence to the top of Goyllarisquizga Group, in some cases including it in this group. ln the last 30 years, works in Central ... -
Sedimentologic evolution of the Tinajani intermontane basin (Late Oligocene - Middle Miocene, southeast Peru)
(IRD ÉditionsFRA, 2002)Le bassin intramontagneux de Tinajani (Oligocene superieur-Miocene moyen; Altiplano du sud du Perou) montre une evolution tectono-sedimentaire qui peut etre divisee en 2 periodes, La premiere (membre inferieur) correspond ... -
Transpressional motions along the Cordillera Occidental - coastal belt boundary since the Late Cretaceous (southern Peru, 16°S)
(IRD ÉditionsFRA, 2002)The study area is located in southern Peru NW of the city of Arequipa (16° S) at the boundary between the Cordillera Occidental and coastal belt. Previous studies sustain that exists in the area a large overthrust, named ... -
Lithosperic-scale transcurrent fault systems in Andean southern Peru
(IRD ÉditionsFRA, 2002)Although Andean southern Peru forms the northwestern termination of the Bolivian Orocline, knowledge of its geology has little progressed in the last 20 years, partly due to the civil war that spread in the region during ... -
Within-plate Volcanism in upper Triassic to lower Jurassic Pucara Group carbonates (Central Peru)
(IRD ÉditionsFRA, 1996)The Pucará Group platform carbonates (Upper Triassic - Lower Jurassic) were laid down in northern and central Peru in a NNW-SSE elongated basin (Fig. 1). They represent the first sediments of the Andean cycle, the beginning ...