A5015958219- Geological formations and processes
- Geological and Geophysical Studies Worldwide
- Geology and Paleoclimatology Research
- Paleontology and Stratigraphy of Fossils
- Geological and Geochemical Analysis
- Archaeological and Geological Studies
- Evolution and Paleontology Studies
- Archaeological and Historical Studies
- Paleontology and Evolutionary Biology
- Aeolian processes and effects
- Fossil Insects in Amber
- earthquake and tectonic studies
- Plant Diversity and Evolution
- Mediterranean and Iberian flora and fauna
- Coleoptera Taxonomy and Distribution
- Geological and Tectonic Studies in Latin America
- Hydrocarbon exploration and reservoir analysis
- Hydrology and Sediment Transport Processes
- Ichthyology and Marine Biology
- Methane Hydrates and Related Phenomena
- Plant and animal studies
- Groundwater and Isotope Geochemistry
- Karst Systems and Hydrogeology
- Soil erosion and sediment transport
- CO2 Sequestration and Geologic Interactions
Universidad Complutense de Madrid
2009-2024
Instituto Geológico y Minero de España
2014-2021
Instituto de Geociencias
2011-2019
Consejo Superior de Investigaciones Científicas
2006-2013
Abstract The existence of a mid‐Cretaceous erg system along the western Tethyan margin (Iberian Basin, Spain) was recently demonstrated based on occurrence wind‐blown desert sands in coeval shallow marine deposits. Here, first direct evidence this Europe is presented and palaeoclimate palaeoceanographic implications are discussed. aeolian sand sea extended over an area 4600 km 2 . Compound crescentic dunes, linear draa complex sheets, wet, dry evaporitic interdunes, sabkha deposits extradune...
Amber is fossilized resin that preserves biological remains in exceptional detail, study of which has revolutionized understanding past terrestrial organisms and habitats from the Early Cretaceous to present day. amber outcrops are more abundant Northern Hemisphere during an interval about 54 million years, Barremian Campanian. The extensive production generated this remarkable record may be attributed biology coniferous producers, growth resiniferous forests proximity transitional...
Deserts are stressful environments where the living beings must acquire different strategies to survive due water stress conditions. From late Albian early Cenomanian, northern and eastern parts of Iberia were location desert system represented by deposits assigned Utrillas Group, which bear abundant amber with numerous bioinclusions, including diverse arthropods vertebrate remains. In Maestrazgo Basin (E Spain), Cenomanian sedimentary succession represents most distal part (fore-erg) that...
Aeolian processes and ephemeral water influx from the Variscan Iberian Massif to mid-Cretaceous outer back-erg margin system in eastern Iberia led deposition erosion of aeolian dunes formation desert pavements. Remains encased fluvial deposits (aeolian pods) demonstrate intense windblown by sudden fluxes. The alternating activity wind a variety facies associations such as deflation lags, pavements, dunes, pebbles scattered throughout dune strata, sandsheets, with bimodal grain-size...
Abstract The interaction between aeolian dunes of the Iberian erg and Tethys waters during mid‐Cretaceous led to a variety sedimentary facies associations such as subtidal deposits, dunes, playa lakes, coastal lakes with tidal creeks, marshes lagoonal embayments tide‐influenced delta deposits. Facies are organized in several stacked cycles. Every cycle is defined by sand‐drift surface separating lake deposits below from dune above, followed transgressive shallow marine above. latter covered...
In the Galve sub-basin, sedimentary record of Upper Hauterivian–Lower Barremian El Castellar Formation is divided into two stages by a marlstone interval with gypsum. Stage 1 shows great variety subenvironments and facies (alluvial, palustrine lacustrine) whereas in stage 2 an extensive, shallow carbonate lake developed. Sedimentation was controlled system south-dipping, ENE–WSW listric normal faults, laterally bounded NNW–SSE steeper transfer faults. Faults sedimentation from basin scale...
Abstract Grain size and SEM analyses suggest the presence of Cretaceous windblown desert sands in coeval shallow marine environments. Size distributions microtexture data allowed us to infer a climate change more arid conditions Iberian Basin during mid‐Cretaceous. The grain late Aptian early Cenomanian shallow‐marine deposits western sub‐basins Maestrazgo (Teruel, Spain) is almost exclusively range between 1.5 3 Φ (0.35–0.125 mm), reflecting prolonged or at least recurrent preselection...
Terra Nova, 23, 76–84, 2011 Abstract The Triassic Buntsandstein facies in the north‐eastern Iberian Chain (central eastern Spain), previously considered to be fluvial origin, is shown contain an evolving erg system. preserved accumulation comprises a succession that represents transition from wadi belt via inner erg‐margin central‐erg This study supports Early (Olenekian) palaeoclimate models for Western Europe, which predict (extremely) arid conditions Iberia. two main easterly and...
Cretaceous amber-bearing outcrops are numerous and mainly distributed along the Northern Hemisphere. They have been related to extensive resin mass production occurring from Barremian Campanian presumably due interrelated abiotic biotic factors. Amber also abundant in Iberian Peninsula, they mostly dated as Albian. Here, we present a new outcrop of Maestrazgo Basin called La Dehesa (Estercuel, Aragón, Spain). This locality is assigned Boundary Marls Unit known for its rich diverse...
ABSTRACT Field exposures of Lower Cretaceous strata in the Oliete sub‐basin (eastern Spain) allow identification syn‐rift features such as listric and planar normal faults, rotated fault blocks, fault‐related folds, sharp thickness variations wedge‐shaped sedimentary geometries, well intra‐rift angular unconformities defined by erosive truncation blocks onlap upper units. The combined use both stratigraphic extensional tectonic at outcrop scale has allowed us to characterise different...
The development of arid climate conditions in eastern Iberia during the mid-Cretaceous (mid-Albian to earliest Cenomanian) has been postulated by several authors over last two decades based on sedimentological and palaeobotanical datasets. In this paper, we present a combined paleosol study mid-Albian Cenomanian Utrillas Group Cuenca Basin east-central Spain, improve knowledge palaeoclimate. Four facies associations are identified as follows: Proximal alluvial braidplain (FA I), Distal II),...