A5061175941- Geological and Geochemical Analysis
- Geological and Tectonic Studies in Latin America
- Geochemistry and Geologic Mapping
- Geology and Paleoclimatology Research
- Cryospheric studies and observations
- earthquake and tectonic studies
- Landslides and related hazards
- Environmental and Cultural Studies in Latin America and Beyond
- High-pressure geophysics and materials
- Climate change and permafrost
- Winter Sports Injuries and Performance
- Geological and Geophysical Studies Worldwide
- Earthquake Detection and Analysis
- Metal Extraction and Bioleaching
- Flood Risk Assessment and Management
- Medical and Biological Sciences
- Mineralogy and Gemology Studies
- Polar Research and Ecology
- Hydrocarbon exploration and reservoir analysis
- Geotourism and Geoheritage Conservation
- Rare-earth and actinide compounds
- Geological and Geophysical Studies
- Dam Engineering and Safety
- Fire effects on ecosystems
- Tree Root and Stability Studies
Universidad Mayor
2014-2015
Pontificia Universidad Católica de Chile
2013-2014
Comisión Chilena de Energía Nuclear
2010
University of Antofagasta
2009
University of Bristol
2004
Uturuncu volcano, SW Bolivia, is a dormant stratovolcano (∼85 km<sup>3</sup>) dominated by dacitic lava domes and flows. <sup>39</sup>Ar/<sup>40</sup>Ar ages show that the volcano was active between 890 ka 271 ka, with lavas becoming younger less extensive at higher elevations. There are current signs of unrest. Between 1992 2006 geodetic satellite measurements record an ongoing 70 km deformation field central uplift rate 1 to 2 cm/yr. Deformation indicates volume changes 400 ×...
Taapaca Volcanic Complex is a large dacitic volcano (35 km 3 ) located in the western border of active zone Central Andes Northern Chile. Apart from early poorly preserved silicic andesites, has generated remarkably similar porphyritic hornblende–biotite dacites with distinctive sanidine megacrysts for at least 1.5 Ma. The main products are dacite lavas and domes associated block-and-ash flow deposits. There have also been several sector collapses to generate debris avalanches, which closely...
The epicentre of the long-lasting seismic crisis started on evening January 22, 2007 and it was located 20 km to west Puerto Chacabuco in Patagonian fjordland, Chile (45º25'S).Approximately 7,000 events were recorded up early May, four which reached magnitudes greater than 5 (Richter), with local intensities VII Aisén VI Coihaique.The swarm within Liquiñe-Ofqui Fault Zone (LOFZ), controls emplacement several monogenetic volcanic cones larger stratovolcanoes.The 23 (Ms 5,2) April 1 5,4)...
Abstract We examine 150 volcanoes and geothermal areas in the central, southern austral Andes for thermal anomalies between years 2000 2010 from two different spaceborne sensors: (1) those automatically detected by MODVOLC algorithm MODIS; (2) manually identified hotspots night-time images ASTER (Advanced Spaceborne Thermal Emission Reflection Radiometer). Based on previous work, we expected to find eight displaying (Ubinas, Villarrica, Copahue, Láscar, Llaima, Chaitén, Lonquimay Chiliques)....
The Salares Norte (SN) Au–Ag belt is here defined as an Upper Miocene-Pliocene metallogenic area, extending for nearly 200 km, located NE of the northern end Oligocene-Lower Miocene Maricunga Belt in central Andes Chile. just east main reverse NS fault systems which are part Sierra Castillo, Potrerillos Mine and Claudio Gay Cordillera faults, limited to north south by NW-striking oblique arc Imilac Wheelwright-Incahuasi regional faults systems. epithermal deposits within SN intimately...
Abstract Ice-capped volcanoes of the Chilean Lake District have shown significant glacier retreat during recent decades, probably in response to tropospheric warming and precipitation decrease. Volcán Mocho-Choshuenco (39°55′S, 72°02′W) is one main active this part country. A mass balance programme was initiated on its southeastern 2003, view representative conditions as an ice body that presumably not affected by current volcanic activity. The glaciers volcano been retreating shrinking...
Abstract Most of the glaciers in southern Chile have been retreating and shrinking during recent decades response to atmospheric warming decrease precipitation. However, some glacier fluctuations are directly associated with effusive geothermal activity ice-covered active volcanoes widely distributed region. The aim this paper is study ice volumetric changes by comparing several topographic datasets. A maximum mean thinning rate 0.81 ± 0.45 m a −1 was observed on ash/debris-covered ablation...
Abstract Volcán Villarrica (39°25 ′ 12″ S, 71°56 27″ W; 2847 m a.s.l.) is an active ice-capped volcano located in the Chilean lake district. The surface energy balance and glacier frontal variations have been monitored for several years, using automatic weather stations satellite imagery. In recent field campaigns, topography was measured Javad GPS receivers. Daily changes snow-, ice-and tephra-covered areas were recorded digital camera installed on a rock outcrop. spite of frequently...
Abstract Uranium–thorium (U–Th) isotope compositions of whole rocks, groundmasses and minerals from mafic to intermediate Andean arc magmas were determined assess the influence crustal stress on rates pre-eruptive crystallization significance crystal uptake. Volcanoes investigated include Lascar in central Andes, situated a compressional regime, Callaqui Lonquimay southern transtensional regime. In Calbuco volcano, which experienced variations local field due volcano unloading triggered by...
El Villarrica es un estratovolcan activo, situado en la Zona Volcanica de los Andes del Sur. Hace aproximadamente 13.800 anos AP (edades 14C no calibradas), este volcan sufrio evento explosivo importante que dio lugar a emision una secuencia flujos piroclasticos, conocida como 'Ignimbrita Lican', cuyo volumen ha sido estimado -10 km3 (no-ERD, Equivalente Roca Densa). Los depositos consisten, principalmente, piroclasticos macizos y oleadas piroclasticas estratificadas. Las facies tipicas...
Results obtained by the first intensive airborne surveys carried out at Volcán Villarrica (39°S) in Southern Chile, are presented. These campaigns included use of a scanner laser system, for detecting glacier surface topography, and helicopter-borne ice penetrating radar, measuring thicknesses. allowed determining snow volume storage this volcano, which is susceptible to melt during eruptive events generating dangerous fast flows (lahars). one most active volcanoes with frequent events, many...
Abstract Mocho-Choshuenco volcano has produced several highly explosive eruptions during its history, which make it one of the most hazardous volcanoes in southern volcanic zone Chile, although is still relatively little studied to date. We present a geochemical study products sub-Plinian, andesitic, Enco eruption that occurred about 1600 years ago. determined major and trace elements compositions, as well volatile (H 2 O, CO , Cl, S) contents melt inclusions trapped minerals (olivine,...