A5042207029- Geological and Geophysical Studies Worldwide
- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Geomagnetism and Paleomagnetism Studies
- Geological formations and processes
- Landslides and related hazards
- Geology and Paleoclimatology Research
- Indigenous Studies and Ecology
- Paleontology and Stratigraphy of Fossils
- Geochemistry and Geologic Mapping
- Flood Risk Assessment and Management
- Fire effects on ecosystems
- Geophysics and Gravity Measurements
- Disaster Management and Resilience
- Geophysical and Geoelectrical Methods
- Archaeological and Geological Studies
- Hydrology and Sediment Transport Processes
- Cryospheric studies and observations
University of Andorra
2016-2024
Andorra Recerca + Innovació
2022-2024
The Eastern Pyrenees mark the transition of Pyrenean Range towards Mediterranean Sea. Because this specific structural location, crustal geometries in area register a significant along-strike change, mainly resulting from overprint Neogene extension on Late Cretaceous-Cenozoic orogenic structure.  Along-strike changes are marked by lateral termination Iberian lower crust subduction and progressive eastwards thinning both European crusts. Although Moho depth studies abundant agree...
On 8th February 1996, in the north-western part of Andorra Pyrenees, Les Fonts d’Arinsal (LFd’A) pure powder avalanche was triggered, descending some 1200 m to bottom Arinsal valley and continuing up opposite slope for about 200 m. This size 4–5 reached velocities 80 ms−1, devastated 18 ha forest, involved a minimum volume 1.8 × 106 m−3 caused major damage eight buildings. Fortunately, no one injured thanks an evacuation, but 322 people lost their properties. study describes physical...
Abstract New geochronological (U–Pb isotope dilution thermal ionization mass spectrometry), geochemical and isotopic data from Upper Ordovician felsic volcanic rocks recorded in the Pyrenees Mouthoumet massifs, SW Europe, suggest that this activity is more widely represented than previously accepted, allows a better refinement of age span involved Sardic Unconformity. This Sandbian volcanism represents final pulse tectonothermal event, starting with Floian–Darriwilian emplacement voluminous...
In this work we establish reliable correlations between density and magnetic susceptibility in three paramagnetic granites from the Pyrenees. total, 128 sites (310 measurements >2600 ones) were studied Mont Louis-Andorra, Maladeta Marimanha granitic plutons covering main range of variability susceptibility. Regressions calculated for every body an integrated linear function was obtained entire dataset: ρ (kg/m3) = 2566 + 0.541κ (10−6 S.I.) (R:0.97). This relationship is only valid domain,...
Abstract The Pyrenees constitutes an exceptional example of Alpine orogenic belt characterized by basement thrust sheets involving Paleozoic rocks and Mesozoic Cenozoic cover units detached on the Triassic evaporites, main décollement level. This work is located in Central Pyrenees, where gravity data help to better constrain internal architecture upper crust southern half Axial Zone northern part South Pyrenean Zone, a key area understand evolution chain. Previous new gravity, petrophysical...
Abstract A new gravity survey (1164 stations and 180 samples for density analysis) combined with two geological cross sections has been carried out in a sector of the Central Pyrenees order to improve characterization basement cover architecture. From North South, study area comprises southern half Axial Zone northernmost part South-Pyrenean Zone. New data were previous existing databases obtain Bouguer residual anomaly maps area. The sections, oriented NNE–SSW, built from field surficial...
The sensitive mountain catchment of Portainé (Eastern Pyrenees, Iberian Peninsula) has recently experienced a significant change in its torrential dynamics due to human disturbances. emplacement ski resort at the headwaters led surpassing geomorphological threshold, with important consequences during flood events. Consequently, since 2008, channel have turned into sediment-laden, highly destructive flows. In order assess this phenomenon and o acquire holistic understanding catchment’s...
Detailed mapping, structural analysis and cross-section constructions yield new data on the geometry chronology of Variscan Alpine deformations in central Pyrenees southern Andorra. The study area is characterized by polyphase deformation strain partitioning owing to presence an efficient décollement level within Silurian black shales. macrostructures gave rise a minimum shortening c. 22% for Cambrian–Ordovician Upper Ordovician units below 35% Devonian above it. structures are cut...
In this work we present a 1:50,000 geological map of the basement rocks Andorra that is harmonization results two decades field and data analyses in frame 1:25,000 Geological Map Project by CENMA–IEA (at AR + I, Research Innovation). The study area lies entirely Axial Zone Pyrenees, where only late Neoproterozoic Paleozoic Quaternary deposits crop out. produced at scale have been removed, order to obtain continuous can be used as basis for stratigraphical structural works. main are...
La zona de estudio, en las inmediaciones Seu d’Urgell (Zona Axial pirenaica), está constituida por una serie estratigráfica rocas Cambro-Ordovícicas, su mayoría detríticas, donde la discordancia Sarda se identifica claramente entre Serie Jujols y Fm. Conglomerados Rabassa. Las principales estructuras son pliegues N-S plano axial subhorizontal que muestran foliación asociada, bien desarrollada los niveles pelíticos (y visibles lámina delgada) pobremente arenisca. En conglomerados...
<p>In the Central Pyrenees, where density contrast between Paleozoic rocks and intruded granitic bodies is measurable, geological cross-sections constrained with gravity data help to unravel subsurface geometry of granites.</p><p>With this goal in mind, during 2018 2019 several gravimetric surveys were carried out Pyrenees improve existent spatial resolution from databases Spanish Catalan Geological Surveys, especially La Maladeta Andorra Mont-Louis...
<p>Cenozoic contractional deformation in the Central Pyrenees generated several basement thrust sheets involving Paleozoic rocks and decoupled Mesozoic Cenozoic cover units detached on main décollement level, Triassic evaporites. The overall geometry structural architecture of chain have already been established based numerous geological geophysical data obtained during decades. This work aims to validate accepted part by construction six serial cross-sections...
<p>The characterization of the basement architecture Pyrenean Axial Zone, backbone chain, is crucial to understand its geodynamic evolution and interplay between tectonism magmatism. In this work, a new gravity-constrained cross section was built along Central Pyrenees, two largest Late Variscan granitic complexes, La Maladeta Andorra-Mont Louis granites, infer geometry at depth host rocks. This ca. 65 km long extends from Mesozoic Bóixols basin in South...