A5038700528- Geology and Paleoclimatology Research
- Marine Biology and Ecology Research
- Paleontology and Stratigraphy of Fossils
- Mollusks and Parasites Studies
- Cephalopods and Marine Biology
- Geological formations and processes
- Evolution and Paleontology Studies
- Marine and coastal plant biology
- Isotope Analysis in Ecology
- earthquake and tectonic studies
- Ichthyology and Marine Biology
- Paleontology and Evolutionary Biology
- Space Exploration and Technology
- Geological and Tectonic Studies in Latin America
- Plant Diversity and Evolution
- Marine and fisheries research
- Geological and Geochemical Analysis
- Fish biology, ecology, and behavior
- Maritime and Coastal Archaeology
- Ocean Acidification Effects and Responses
- Aquatic Invertebrate Ecology and Behavior
- High-pressure geophysics and materials
- Methane Hydrates and Related Phenomena
- Physics of Superconductivity and Magnetism
- Invertebrate Taxonomy and Ecology
Austral University of Chile
2013-2024
Research Center on Earth Sciences
2018
Kiel University
1988-2012
Consejo Nacional de Investigaciones Científicas y Técnicas
2012
GFZ Helmholtz Centre for Geosciences
2005-2010
Universidad de Magallanes
2010
Museum of Vertebrate Zoology
2010
University of Chile
2010
Museum am Rothenbaum
2005
Freie Universität Berlin
2005
[1] The Mejillones Peninsula in northern Chile has been recognized as the surface expression of a segment boundary for large subduction zone earthquakes. sharp contact between rupture planes two instrumentally recorded earthquakes, Mw = 8.0 Antofagasta (1995) and 7.7 Tocopilla (2007) events, is located beneath central part Peninsula. We present new chronostratigraphic structural data that allow reconstructing evolution at correlation latter with seismic cycle deformation on plate interface....
Abstract A consensus on the biostratigraphic age and depositional environment of Navidad, Ranquil, Lacui formations exposed along tectonic margin central Chile has been elusive due to conflicting evidence. This study resolves this dilemma gains further insight regarding history Chilean coast. Problematic interpretations stem primarily from remarkable similarity between molluscan fauna these units with those well documented for late Oligocene early Miocene Peru. Planktic foraminifers,...
Mollusks along the Pacific coast of South America provide one main exceptions from latitudinal diversity gradient decreasing species numbers toward poles. From 42 degrees S southward, coincident with onset mosaic coastline southern Chilean fiord-lands, show a twofold to threefold increase compared central coast. Here we use Neogene fossil record and Chile test hypotheses on origin this unusual pattern. Contrary previous suggestions, did not find evidence for buildup biodiversity since...
The Humboldt Current Marine Ecosystem (HCE) is one of the most productive areas in global ocean, but current anthropogenic stressors, particularly overfishing, pose a significant threat to marine biodiversity. Moreover, limited time scale modern assessments may underestimate magnitude human alterations Here we use rich Quaternary fossil record present along HCE coast, encompassing last ca. 500 kyr, build baseline evaluate impact activities on diversity mollusk assemblages. We compiled an...
Varios autores han propuesto diferentes esquemas estratigraficos para los depositos sedimentarios neogenos marinos que afloran en la zona costera de Chile central entre Valparaiso (~33°00'S) y Punta Topocalma (~34°30'S), sin exista un consenso al respecto. Tampoco existe acuerdo respecto a las correlaciones parte norte dicha zona, San Antonio (~33°30'S) con aquellos aparecen sur, Topocalma. Sobre base nuevos estudios estratigraficos, sedimentologicos paleontologicos se propone, manera...
Synopsis The 122 Cenozoic molluscan species from Chile and Argentina introduced by d'Orbigny (1842), Sowerby (1846) Hupé (1854) are all based on material collected during early expeditions to that part of the world nineteenth century. These revised herein many assigned appropriate modern genera. A brief list synonyms is given, stating only those references ‐ in addition original one which illustrated or new combinations provided. Comments nature preservation type status taxa provided order...
During the last decade, new Neogene fossil assemblages from South America have revealed important clues about evolution of seabird faunas in one major upwelling systems world: Humboldt Current. However, most this record comes arid Northern Chile and Southern Peru and, consequence, our knowledge evolutionary history seabirds temperate transitional zone is negligible. A Late Pliocene assemblage birds coastal locality Horcon Central offers a unique opportunity to fill gap.
Abstract. Data on marine microfossil assemblage composition have multiple applications. Initially, they were primarily used for (chrono)stratigraphy and palaeoecology, but these data are now also widely to study evolutionary ecological processes, such as past biodiversity its links with environmental dynamics, or provide a basis conservation efforts biomonitoring. The large range of potential applications renders abundance ideal reuse. However, the complexity inherent in taxonomic data,...
RESUMENSe describen doce taxa de condrictios fósiles provenientes rocas asignadas al Plioceno Superior la Formación Horcón
The stromboid fauna from Cenozoic deposits of Chile contains an unusual mixture warm-water and cool-water taxa, showing relationships with either Argentinian or New Zealand taxa. Six species Strombidae, Aporrhaidae, Struthiolariidae are described, their paleobiogeographic implications discussed. Conus medinae Philippi, 1887 the Miocene Navidad Formation is assigned to genus Strombus thereby constitutes first record Strombidae southwestern South America. new subgenus Austrombus proposed for...
The influence of substituting Ni for Cu on the superconducting critical temperature Tc and electrical resistivity ρ(T) high-Tc superconductor Ba2YCu3O7 is reported. In series Ba2YCu3(1-x)Ni3xO7 we find up to x = 0.12 a linear depression with slope (dTc/dx)x=0 -2.4 K/(% substituted Cu). A set samples nominal composition Ba2YCu3(1-x)O7+δ prepared comparison shows in same x-range no change Tc. both resistance ratios R(300 K)/R(125 K) decrease about 1 0.12, however, only containing large amounts...
Functional diversity based on species traits is a powerful tool to investigate how changes in richness and composition affect ecosystem functioning. However, studies aimed at understanding functional over large temporal spatial scales are still scant. Here we evaluate the combined effect of diversification sorting fossil marine gastropods during Pliocene-Quaternary transition Pacific coast South America. We analyzed total 172 29 Pliocene 97 Quaternary sites. Each was characterized according...
Fourteen species of Volutidae are recognized from the Neogene central to southern Chile. Seven known previous descriptions: Voluta triplicata, V. alta, domeykoana, obesa, vidali, Proscaphella taverai, and Adelomelon reconditus. A neotype is designated for alta. gracilior, type genus Proscaphella, considered belong Miomelon, which places in synonymy with Miomelon. Most "Proscaphella," excluding species, form a separate group well distinguished these new Palaeomelon introduced triplicata as...
Abstract Few fossil fish otolith associations have been described from the Pacific side of Americas and, except for a single species ( Steindachneria svennielseni ), none South America south Central American tropical region. Here, we describe rich assemblage obtained fifteen early Miocene outcrop locations along Chilean coast about 33°S to 45°S. More than 2,000 specimens were studied resulting in recognition 67 species, with 27 being new science. This represents an important data point...
Despite being one of the richest Neogene deposits marine fossil vertebrates along Pacific coast South America, no detailed study bony fishes from Bahía Inglesa Formation has been carried out. Through revision historical collections Caldera Paleontological Museum, we describe 27 remains fishes. Fossils described here are distributed in 13 taxa. Among these, Sardinops sp. cf. S. sagax (Clupeidae) represents first record genus for Chile, Labrodon (Labridae) and Stelliferinae (Sciaenidae)...