Este trabajo define las principales características sedimentológicas, paleontológicas y geoquímicas de la Unidad Arenas de Trigueros, depositada durante el Messiniense en un contexto global de bajada de nivel del mar. Esta unidad se diferencia del resto de la Formación Arcillas de Gibraleón por su mayor tamaño de grano, la presencia de niveles temp...
The presence of perennially wet surface environments on early Mars is well documented, but little is known about short-term episodicity in the early hydroclimate. Post-depositional processes driven by such short-term fluctuations may produce distinct structures, yet these are rarely preserved in the sedimentary record. Incomplete geological constra...
Published in Scientific reports
Tropical coral reefs, as prominent marine diversity hotspots, are in decline, and long-term studies help to improve understanding of the effects of global warming, sea-level rise, ocean acidification, deterioration of water quality, and disease. Here, we evaluated relative coral abundance and reef accretion rates over the past 9000 years in Belize ...
Published in Scientific Reports
Provenance studies demonstrate the important control of plate boundary mountain building on continental sediment routing systems. Less well understood is if subsidence and uplift in cratons also has the potential to affect the organization of sediment routing systems on continental scales. New detrital zircon provenance data from the Michigan Basin...
The Curiosity rover of the Mars Science Laboratory has been exploring Gale crater since landing in August 2012. Along its ~30 km journey, the rover has encountered sediment rocks deposited in aeolian, lacustrine, but also fluvial settings, evidence of flowing liquid water in the Gale crater around 3.6 Ga.From mid-2021, the rover has been exploring ...
Published in Scientific reports
Scarce fossil tetrapod burrows have been recorded in Cretaceous rocks, which is probably linked to the dominant equable climates that existed for most of this period. The occurrence of Cretaceous tetrapod burrows from Patagonia (Chubut Province, Argentina) dated between 118 and 115 million years ago, gives insights into their paleoecology and paleo...
Published in Scientific Reports
High total organic sulfur (TOS) content (i.e., Type IIS kerogen) is well known to significantly influence kerogen transformation but the effect of TOS content on the evolution of organic porosity has only rarely and indirectly been investigated. This study demonstrates that organic porosity is generated at lower thermal maturity in mudstones contai...
To understand the spatio-temporal development of a given geosystem and to correctly assess the processes acting in a respective geological (paleo-)environment, the understanding of the solid particle flux and its interaction with the dissolved phase is crucial. Certain particle types can be used as excellent tracers for a variety of sedimentary (e....
Published in Nature communications
Floods determine river behaviour in time and space. Yet quantitative measures of discharge variability from geological stratigraphy are sparse, even though they are critical to understand landscape sensitivity to past and future environmental change. Here we show how storm-driven river floods in the geologic past can be quantified, using Carbonifer...
L’activité sismique récente au front des Alpes occidentales est considérée modérée, mais peu d'informations sont disponibles sur son évolution sur le temps long. Ces travaux de thèse se concentrent sur la sismicité de cette région au cours de la période holocène (11 700 dernières années). La paléosismologie lacustre est l’approche choisie pour étud...
