I am engaged as carbonate consultant in projects for the oil industry providing custom-tailored training courses and seminars. These combine unique field and experimental datasets aimed at improve the know-how of the ‘Pre-salt’ non-skeletal carbonate-silica plays.
I have strong experience analysing and integrating outcrop, borehole (cuttings, cores, wireline logs), and thin-section information from marine and freshwater carbonate sequences (Middle Triassic of the Catalan Basin; Cretaceous of the Tremp Basin; Carboniferous of Scotland; Pleistocene and Holocene of USA, Australia, Italy).
I am currently running two field trips for geology students and geoscience specialists covering different aspects of microbial carbonate sedimentology:
FIELD-TRIP 1 # ARCHITECTURE AND BASIN EVOLUTION OF FAULT-BLOCK MICROBIAL-DOMINATED CARBONATE RAMPS (TRIASSIC, CATALAN BASIN, SPAIN): AN OUTCROP ANALOGUE FOR PRESALT OCCURRENCES
This field-trip is focused to gain insights on the facies architecture from marine carbonate systems dominated by microbial factories with examples from the Middle Triassic of the Catalan Basin (Spain). Special emphasis is given to the recognition of the facies heterogeneities and typical stacking patterns seen in carbonate ramp settings dominated by well-preserved, metre to seismic-scale stromatolitic to thombolitic deposits.
In this field-trip, attendees will learn more about the controls driving microbial carbonate occurrence across inner to outer ramp environments. They will have the opportunity to recognise outcrop to seismic-scale sedimentary geometries and stratal terminations, along with a wide array of depositional facies and sequence stratigraphic surfaces relevant to carbonate systems in rift tectonic settings.
FIELD-TRIP 2 # AN OUTCROP ANALOGUE FOR SPHERULITIC CARBONATES FORMED IN ALKALINE, VOLCANIC LAKES (CARBONIFEROUS, SCOTLAND): DEPOSITIONAL ARCHITECTURE AND ENVIRONMENTAL SIGNIFICANCE OF CARBONATE ALLOCHEMS
This second field-trip is focused on the recognition of the facies heterogeneities seen in shallow hyper-alkaline lacustrine and volcanic settings dominated by ‘non-skeletal’ carbonate factories. The field-trip takes place in the East Kirkton Limestone Quarry (Bathgate, Scotland) which is made up of a Carboniferous sedimentary succession of spherule-rich carbonate allochems formed in a volcanic and clay-poor alkaline lake setting.
This location represents an unrivalled outcrop analogue for the Cretaceous South Atlantic Presalt subsurface occurrences (Brazil and Angola), as allows to explore how these unusual carbonate settings looks like in outcrop. In this field-trip we will integrate outcrop, thin-section, geochemical and experimental data to better understand the origin and predict the occurrence of the analogous Presalt spherulitic carbonates within lacustrine successions.
In addition, we will review the current hydrogeochemical models built for the Presalt alkaline lakes critically evaluating the mechanisms considered by the different Schools of Thought to explain mineral paragenesis and carbonate textural variability. The effects of evaporation, mixing of waters, and leackage to underlying aquifers (or adjacent water bodies) will be questioned in a basin-scale context to understand the impact that lake bathymetry, atmospheric CO2 pressure and water composition have in chemical facies models and mineral associations (calcite, Mg-clays and silica).