Archive

Wed 29th May @ noon, Rm 312.222 Abstract: Fluid inclusion gas analysis by mass spectrometry is a rare yet valuable geochemical tool used to tease out additional information from geothermal and hydrothermal systems but also from other geologic materials.  This talk is subdivided into two sections, the first dealing with the methodology and gas interpretation.  The second […]

Wed 1st May @ noon, Rm 312.222 Abstract: We have compiled ample evidence showing that Lesser Antilles magmas are very wet (≥ 4.5 wt% of initial H2O). Elevated H2O content of Lesser Antilles magmas and its variation from island to island is reflected in crustal structure of the arc. We used an inversion approach combining constraints from […]

Wed 3rd April @ noon, Rm 312.222 Abstract: Borosilicate glass is an important material used in various industries due to its chemical durability, such as for the immobilization of high-level nuclear waste. However, it is susceptible to aqueous corrosion, recognizable by the formation of surface alteration layers (SALs). In the talk, I will present results of […]

Wed 27th March@ noon, Rm 312.222 Abstract: Modern views of igneous systems are moving increasingly away from the long-standing large magma chamber paradigm towards a more nuanced concept of transcrustal magmatic mushes, wherein the dominant mechanism of igneous differentiation is percolative reactive flow, rather than traditional crystal settling. The melts that populate these mushy systems have […]

Wed 20th March @ noon, Rm 312.222 Abstract: At the present day, different tectonic settings exhibit variations in heat flow that are registered as contrasting metamorphic facies series in distinct terranes; how far back in time these relationships are reliable is unclear. Here I use a dataset of temperature (T), pressure (P) and thermobaric ratio (T/P at […]

Wed 20th February @ noon, Rm 312.222 Abstract: Deep learning methods have achieved great success in various areas including computer vision, speech recognition, natural language processing, robotics, bioinformatics, chemistry, finance, and many others. Contrary to classical machine learning approaches, methods based on deep learning and big data achieve high efficiency and superhuman performance in many complex tasks. […]

Wed 13th February @ noon, Rm 312.222 Abstract: The reaction calcite + quartz => wollastonite + CO2 is the archetypal model for metamorphic decarbonation. Silicate-carbonate reactions of this type operate in a wide range of rock types, are ubiquitous during metamorphism in subduction zones and orogenic belts, and have operated for most of geologic time. Metamorphic decarbonation releases […]

Wed 23rd January @ noon, Rm 312.222 Abstract: The Moon was once though to be a cold undifferentiated body that never could have been capable of generating an internal Earth-like magnetic  field. It thus came as a surprise to find that many of the lunar rocks collected during the Apollo missions were magnetized, and that orbital magnetic field data showed portions […]

Wed 4th December @ noon, Rm 312.222 Abstract: Mountain belts have always intrigued human beings and were first looked with defiance as the home of the gods. They appeared as gigantic and resisting the assaults of the natural elements even though it was already understood in Ancient Greece that erosion could potentially play a major role in […]