Browsing by Author "Morata Céspedes, Diego"
Now showing items 1-20 of 21
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Morata Céspedes, Diego; Oliva, Claudia; Cruz, Rita de la; Suárez Dittus, Manuel (PERGAMON-ELSEVIER SCIENCE, 2005-01)The authors present petrological and geochemical data for the Late Oligocene (ca. 27 Ma) Bandurrias gabbro, a small (approximate to 4.5 x 3 km), isolated intrusion near Coyhaique (45degrees35' Lat. S), southern Chile, in ...
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Espinoza, Felipe; Morata Céspedes, Diego; Polvé, Mireille; Lagabrielle, Yves; Maury, René; Guivel, Christèle; Cotten, Joseph; Bellon, Hervé; Suárez Dittus, Manuel (ELSEVIER, 2008-03)Volumetrically minor microsyenites, alkali microgranite and related trachytic dykes intrude early Pliocene OIB-like alkali basaltic and basanitic flows of the Meseta del Lago Buenos Aires in Central Patagonia (47 degrees ...
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Morata Céspedes, Diego; Polvé, M.; Valdés, A.; Belmar Urbina, Mauricio; Dinator Ramírez, María Inés; Silva, M.; Leiva, M. A.; Aigouy, T.; Morales Peña, José (SPRINGER, 2008-11)Santiago de Chile is a big city with huge air quality problems, being one of the most polluted cities in the world. This is aggravated during winter by the topography and meteorological conditions of the city. Although ...
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Higueras, Pablo; Oyarzún, Roberto; Oyarzún, Jorge; Maturana, Hugo; Lillo, Javier; Morata Céspedes, Diego (PERGAMON-ELSEVIER SCIENCE LTD, 2004-11)The Coquimbo region has been one of the richest producers of Cu, Au and Hg in Chile, and some of the deposits have been mined almost continuously since the 16th century. To assess the potential environmental contamination ...
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Vásquez, M.; Nieto, F.; Morata Céspedes, Diego; Droguett, B.; Carrillo Rosua, F. J.; Morales, S. (Elsevier, 2014)HRTEM textural evidence shows that clay minerals in the Tinguiririca geothermal field (Andean Cordillera, central Chile) are the result of direct alteration of former volcanic glass and minerals by hydrothermal fluids at ...
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Roquer, Tomás; Arancibia, Gloria; Rowland, Julie; Iturrieta, Pablo; Morata Céspedes, Diego; Cembrano, José (Elsevier, 2017)Paleofluid-transporting systems can be recognized as meshes of fracture-filled veins in eroded zones ofextinct hydrothermal systems. Here we combined meso-microstructural analysis of 107 fractures andmechanical modeling ...
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Machado, Adriane; Lima, E. F.; Chemale, Farid Jr.; Morata Céspedes, Diego; Oteíza, Orlando; Almeida, D. P. M.; Figueiredo, A. M. G.; Alexandre, F. M.; Urrutia, J. L. (PERGAMON-ELSEVIER SCIENCE, 2005-03)Geochemical data from basalts, basaltic andesites, and andesites of the Mesozoic-Cenozoic (143-44 Ma) from Livingston, Greenwich, Robert, King George, and Ardley Islands of the South Shetland archipelago, Antarctica, are ...
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Sánchez Yáñez, Camilo; Reich Morales, Martín; Leisen, Mathieu; Morata Céspedes, Diego; Barra, Fernando (Elsevier, 2017)Sinter deposits are formed by precipitation of silica from hydrothermal fluids that have reached the surface environment. They are commonly found around hot springs and represent surface expressions of underlying geothermal ...
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Oliveros, Verónica; Aguirre Le-Bert, Luis; Morata Céspedes, Diego; Simonetti, Antonio; Vergara Martínez, Mario; Belmar Urbina, Mauricio; Calderón, Sergio (The Geological Society, 2008)Multiple geochronological methods using different metamorphic minerals were combined to date the regional, very low-grade metamorphism affecting Upper Jurassic–Lower Cretaceous volcano-sedimentary successions in the Andes ...
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Sánchez Alfaro, Pablo; Sielfeld, Gerd; Van Campen, Bart; Dobson, Patrick; Fuentes, Víctor; Reed, Andy; Palma Behnke, Rodrigo; Morata Céspedes, Diego (Elsevier, 2015)The Andes is the largest undeveloped geothermal region in the world. The Chilean case is the most puzzling because the country is largely dependent on imported fuels causing, among other issues, high energy prices and ...
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Held, Sebastián; Nitschke, Fabian; Schill, Eva; Morata Céspedes, Diego; Eiche, Elisabeth; Kohl, Thomas (Geothermal Resources Council, 2017)The Villarrica-Quetrupillán-Lanín volcanic chain is surrounded by > 20 hot springs, located on the flanks and in the valleys around the volcanos. The hot springs that are extensively used for spa purpose discharge thermal ...
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Creixell, Christian; Parada Reyes, Miguel; Morata Céspedes, Diego; Vásquez, Paulina; Pérez de Arce, Carlos; Arriagada Ortega, César (SERVICIO NACIONAL GEOLOGIA MINERIA, 2011-01)The Middle-Late Jurassic mafic dike swarms of central Chile between 33 degrees and 33 degrees 45'S register the tectonic activity of the contemporaneous arc represented by the Coastal batholith. These dike swarms evidence ...
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Machado, Adriane; Chemale, Farid Jr.; Conceição, Rommulo V.; Kawaskita, Koji; Morata Céspedes, Diego; Oteíza, Orlando; Van Schmus, William (ELSEVIER SCIENCE BV, 2005-06)Isotope data and trace elements concentrations are presented for volcanic and plutonic rocks from the Livingston, Greenwich, Robert, King George and Ardley islands (South Shetland arc, Antarctica). These islands were formed ...
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Ferrando, Rodolfo; Roperch, Pierrick; Morata Céspedes, Diego; Arriagada Ortega, César; Ruffet, Gilles; Córdova, María Loreto (Elsevier, 2014)The Illapel Plutonic Complex (IPC), located in the Coastal Range of central Chile (31 e33 S), is composed of different lithologies, ranging from gabbros to trondhjemites, including diorites, tonalites and granodiorites. U/Pb ...
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Morata Céspedes, Diego; Castro de Machuca, Brígida; Arancibia, Gloria; Pontoriero, Sandra; Fanning, Mark (ELSEVIER, 2010)Combined petrological, geochemical, isotopic and geochronological data shed light on the origin and evolution of a peraluminous garnet-bearing two-mica granitoid (El Tigre Granitoid: ETG) cropping out in southwestern ...
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Espinoza, Felipe; Morata Céspedes, Diego; Pelleter, Ewan; Maury, René; Suárez Dittus, Manuel; Lagabrielle, Yves; Polvé, Mireille; Bellon, Hervé; Cotten, Joseph; Cruz, Rita de la; Guivel, Christèle (ELSEVIER SCIENCE BV, 2005-06)The Meseta Chile Chico (MCC, 46.4 degrees S) is the westernmost exposure of Eocene (lower basaltic sequence, LBS; 55-40 Ma, K-Ar ages) and Mio-Pliocene (upper basaltic sequence, UBS; 16-4 Ma, K-Ar ages) flood basalt volcanism ...
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Valenzuela, M.; Abdu, Y.; Scorzelli, R. B.; Duttine, M.; Morata Céspedes, Diego; Munayco, P. (Springer Netherlands, 2008-04)We report the results of a study on the weathering products of 21 meteorites found in the Atacama Desert (Chile) using room temperature 57Fe Mössbauer spectroscopy (MS). The meteorites are weathered ordinary chondrites ...
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Schilling, M.; Conceição, Rommulo V.; Mallmann, G.; Koester, E.; Kawashita, K.; Hervé Allamand, Francisco; Morata Céspedes, Diego; Motoki, A. (ELSEVIER SCIENCE BV, 2005-06)Cerro Redondo is an ancient cinder cone now almost completely eroded, sited over a sill that corresponds to a sub-volcanic magma chamber, in Santa Cruz province, Patagonia, Argentina. It is composed of Pliocene-Pleistocene ...
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Roulleau, Emilie; Bravo, Francisco; Pinti, Daniele L.; Barde Cabusson, Stéphanie; Pizarro, Marcela; Tardani, Daniele; Muñoz, Carlos; Sánchez, Juan; Sano, Yuji; Takahata, Naoto; Cal, Federico de la; Esteban, Carlos; Morata Céspedes, Diego (Elsevier, 2017)Natural geothermal systems are limited areas characterized by anomalously high heat flowcaused by recent tectonic ormagmatic activity. The heat source at depth is the result of the emplacement ofmagmabodies, controlled by ...
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Creixell, Christian; Parada Reyes, Miguel; Roperch, Pierrick; Morata Céspedes, Diego; Arriagada Ortega, César; Pérez de Arce, Carlos (ELSEVIER, 2006-10-13)The Concon Mafic Dike Swarm (CMDS) consists of basaltic to andesitic dikes emplaced into deformed Late Palcozoic granitoids during the development of the Jurassic arc of central Chile. The dikes are divided into an early ...