Buscar
Mostrando ítems 11-20 de 77
Experiences with non-intrusive monitoring of distribution transformers based on the on-line frequency response
(Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ingeniería, 2015-01-01)
The following article presents the results obtained in experiences that use the Impulse Frequency Response Analysis (IFRA) method with a transformer in service. The IFRA method has been implemented in order to transform ...
A genetic link between magnetite mineralization and diorite intrusion at the El Romeral iron oxide-apatite deposit, northern Chile
(Springer Verlag, 2018)
El Romeral is one of the largest iron oxide-apatite (IOA) deposits in the Coastal Cordillera of northern Chile. The Cerro Principal magnetite ore body at El Romeral comprises massive magnetite intergrown with actinolite, ...
Factors that determine advertising evasion in social networks
(Corporación Universidad de la Costa, 2021)
Timing and duration of hydrothermal activity at the Los Bronces porphyry cluster: an update
(Springer-Verlag, 2014)
New geochronological data from the Los Bronces
cluster of the Río Blanco-Los Bronces mega-porphyry Cu-Mo
district establish a wide range of magmatism, hydrothermal
alteration, and mineralization ages, both in terms of ...
Spatial coincidence and similar geochemistry of Late Triassic and Eocene-Oligocene magmatism in the Andes of northern Chile: evidence from the MMH porphyry type Cu-Mo deposit, Chuquicamata district
(Springer, 2018)
The MMH porphyry type copper-molybdenum deposit in northern Chile is the newest mine in the Chuquicamata District, one of largest copper concentrations on Earth. Mineralized Eocene-Oligocene porphyry intrusions are hosted ...
Restricted responsiveness to noise interference in two anurans from the southern temperate forest
(Wiley, 2017)
Animals adopt different strategies to communicate by means of sound in noisy environments such that some species increase, while others decrease their vocal activity in the presence of interference. Anuran amphibians from ...
Refinement of the time-space evolution of the giant Mio-Pliocene Río Blanco-Los Bronces porphyry Cu–Mo cluster, Central Chile: new U–Pb (SHRIMP II) and Re–Os geochronology and 40Ar/39Ar thermochronology data
(Springer, 2013)
Representing one of the largest known (estimated >5
Gt at 1 % Cu and 0.02 % Mo) porphyry system, the Río
Blanco-Los Bronces deposit incorporates at least five hypabyssal
intrusive and hydrothermal centres, extending ...
Tectonic inversion and magmatism in the Lautaro Basin, northern Chile, Central Andes: A comparative approach from field data and analog models
(Elsevier, 2016-03)
We present the results of a series of analog models addressing the relationships between tectonic inversion and magmatism, taking the Lautaro Basin in northern Chile (27-28 degrees S), Central Andes as a natural case. The ...
New insights on the origin of the Mesón Alto deposit, Yeso Valley, central Chile: A composite deposit of glacial and landslide processes?
(Servicio Nacional de Geología y Minería, 2014)
The Mesón Alto chaotic deposit, located in the Main Cordillera at about 33°40’S, is an important landform with a volume of ca. 4.5 km3 unconsolidated material deposited downstream of the Yeso Dam in the Yeso Valley, Río ...
Multidisciplinary approach to study migmatites: origin and tectonic history of the nason ridge migmatitic gneiss, wenatchee block, cascades crystalline core, wa, usa
(UNIVERSIDAD NACIONAL DE COLOMBIA, 2008)
The Nason Ridge Migmatitic Gneiss of the Cascades Core is a migmatitic unit comprising concordant pelitic schist and gneiss, amphibolite, and tonalite gneiss, and cross cutting tonalite, quartz-rich granitoid, and ...