Area of research
Geophysics · Paleontology
Research interest
Research topics from publications: Metasedimentary “carbon filter” and its implication for subduction zone carbon recycling; Enhanced metamorphic CO 2 release on the Proterozoic Earth; Refined Tectonic Evolution of the Betic‐Rif Orogen Through Integrated 3‐D Microstructural Analysis and Sm‐Nd Dating of Garnet Porphyroblasts; Igneous and Metamorphic CO2 Sources: How Large and How Variable?. Representative work: Rock metamorphism releases substantial CO 2 over geologic timescales (>1 My), potentially driving long-term planetary climate trends. The nature of carbonate sediments and crustal thermal regimes exert a strong control on the efficiency of metamorphic CO 2 release; thus, it is likely that metamorphic CO 2 degassing has not been constant throughout time. The Proterozoic Earth was characterized by a high proportion of dolomite-bearing mixed carbonate-silicate rocks and hotter crustal regimes, both of which would be expected to enhance metamorphic decarbonation. Thermodynamic phase equilibria modeling predicts that the metamorphic carbon flux was likely ~1.7 times greater in the Mesoproterozoic Abstract High‐resolution microstructural analysis of porphyroblast inclusion trails integrated with Sm‐Nd garnet geochronology has provided new insight into the tectonic history of the Betic‐Rif orogen. Three principal age groups of porphyroblasts are demonstrated with distinctly oriented inclusion‐trails. Inclusion‐trail curvature axes or “FIA” (Foliation Inflexion/Intersection Axes) are shown to represent “fossilized” crenulation axes from which a succession of different crustal shortening directions can be deduced. The regional consistency of microstructural orientations and their geometric relationship with multiple sets of macroscopic folds reveal the composite character of the Gibralta
Igneous and Metamorphic CO2 Sources: How Large and How Variable?
Metasedimentary “carbon filter” and its implication for subduction zone carbon recycling
Enhanced metamorphic CO <sub>2</sub> release on the Proterozoic Earth
Refined Tectonic Evolution of the Betic‐Rif Orogen Through Integrated 3‐D Microstructural Analysis and Sm‐Nd Dating of Garnet Porphyroblasts