A5024021137- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- High-pressure geophysics and materials
- earthquake and tectonic studies
- Geology and Paleoclimatology Research
- Geological Formations and Processes Exploration
- Mineralogy and Gemology Studies
- Geological and Tectonic Studies in Latin America
- Hydrocarbon exploration and reservoir analysis
- Radioactive element chemistry and processing
- Geological and Geophysical Studies
- Pleistocene-Era Hominins and Archaeology
- Seismology and Earthquake Studies
- Geochemistry and Elemental Analysis
- Radioactive contamination and transfer
- Clay minerals and soil interactions
- Ancient and Medieval Archaeology Studies
- Paleontology and Stratigraphy of Fossils
- Aeolian processes and effects
- Geological and Geophysical Studies Worldwide
- Seismic Waves and Analysis
- Evolution and Paleontology Studies
- Solar and Space Plasma Dynamics
- Metal Extraction and Bioleaching
- Isotope Analysis in Ecology
Natural History Museum
2018-2024
German Oceanographic Museum
2022
ETH Zurich
2015-2021
Board of the Swiss Federal Institutes of Technology
2021
Institute of Geochemistry
2015
The formation of world class porphyry copper deposits reflect magmatic processes that take place in a deeper and much larger underlying system, which provides the source magmas, as well metal sulphur-charged mineralising fluids. Reading geochemical record this large region, constraining time-scales for creating smaller deposit, are critical order to fully understand quantify lead concentration within these valuable mineral deposits. This study focuses on Bajo de la Alumbrera deposit...
Accessory mineral U–Pb geochronology by isotope dilution thermal ionization mass spectrometry (ID-TIMS) requires precise and accurate determinations of parent–daughter ratios.
Abstract Protracted magma storage in the deep crust is a key stage formation of evolved, hydrous arc magmas that can result explosive volcanism and economically valuable magmatic-hydrothermal ore deposits. High magmatic water content results extensive amphibole ± garnet fractionation suppression plagioclase crystallization as recorded by elevated Sr/Y ratios high Eu (high Eu/Eu*) melt. Here, we use novel approach to track petrogenesis using apatite trace element chemistry volcanic formations...
Abstract The Cornubian Batholith (SW England) is an archetypal Variscan rare metal granite with potential for Li-mica mineralization. We present a petrographic, trace element and multivariate statistical study of micas from the series related hydrothermally altered units to assess role magmatic vs subsolidus processes fluxing elements (F B) on Li cycle during evolution system. mica types are as follows: (1) magmatic, which include Fe-biotite, protolithionite I phengite-muscovite most...
Bridging the gap between plutonic and volcanic realms is essential for understanding a variety of magmatic processes from caldera-forming eruptions to formation magmatic-hydrothermal ore deposits. Porphyry copper deposits are commonly associated with large long-lived centers, but temporal dynamic link mineralized intrusions has remained controversial. Based on combination (1) high-precision zircon U-Pb geochronology trace element geochemistry (2) plagioclase textures, we discovered an...
Abstract Porphyry Cu ore deposits are a rare product of arc magmatism that often form spatiotemporal clusters in magmatic arcs. The petrogenetic evolution igneous rocks cover the temporal window prior to and during porphyry deposit formation may provide critical insights into processes key generating these systems. This study documents Palaeocene–Eocene Yarabamba Batholith, Southern Peru, was incrementally assembled between ~ 67 59 Ma hosts three, nearly contemporaneous, giant Cu–Mo formed...
Open-conduit basaltic volcanoes can be characterised by sudden large explosive events (paroxysms) that interrupt normal effusive and mild activity. In June-August 2019, one major explosion two paroxysms occurred at Stromboli volcano (Italy) within only 64 days. Here, via a multifaceted approach using clinopyroxene, we show arrival of mafic recharges up to few days before the onset these their effects on eruption pattern Stromboli, as prime example persistently active, open-conduit volcano....
Abstract Subduction zone magmatism is a major control of volcanism, the generation modern continental crust and formation economically important porphyry Cu–(Mo–Au) deposits. Reading magmatic record individual arc segments constraining rates changes are critical in order to fully understand quantify processes that drive magma evolution subduction settings during growth. This study focuses on San Francisco Batholith Rio Blanco-Los Bronces deposit cluster central Chile, which provides an...
We document recent advances in analytical protocols that employ 10<sup>13</sup> Ω resistors the Faraday cup amplifier feedback loop for high-precision U–Pb geochronology by isotope dilution thermal ionisation mass spectrometry (ID-TIMS).
Volatile-rich intermediate to silicic magmatic systems can feed devastating volcanic eruptions but also generate valuable magmatic-hydrothermal ore deposits that supply most of the world's copper. Understanding geometry, dynamics and timescales these is critical in developing models for predicting occurrence future large eruptions. Here, we use zircon petrochronology from an equigranular monzonite successively emplaced porphyry dykes reconstruct time – temperature composition evolution magma...
The Late Pleistocene-Holocene Dilo-Dukana and Mega volcanic fields (Ririba rift, South Ethiopia) formed through monogenetic eruptions of limited volumes alkaline basalts containing abundant mantle crustal xenoliths. This activity postdated the emplacement voluminous Pliocene subalkaline basaltic lavas related to main rifting phase. Several NE-SW aligned vents, that abruptly cut rift-related structures, form two fields, indicating occurrence magmatism disconnected from rift (Corti et al.,...
Arc magmas have higher water contents (2-6 wt.% H
Porphyry-type deposits are a vital source of green technology metals such as copper and molybdenum. They typically form in subduction-related settings from large, long-lived magmatic systems. The most widely accepted model for their formation requires that mantle-derived magmas undergo an increase volatiles ore-forming constituents mid- to lower crustal reservoirs over millions years, however, this is mostly based on observations shallow, sporadically exposed parts porphyry To examine...
Abstract Large volume, intermediate-felsic magma reservoirs are the source of melt and mineralising fluids which generate porphyry copper deposits. Cooling crystallisation hydrous magmas drives exsolution expulsion a magmatic volatile phase—a process remains challenging to constrain in Cu systems where record compositions is rarely preserved. Here, we use halogen apatite inclusions shielded as within zircon evolution pre-date synchronous with mineralisation at Quellaveco, Southern Peru....
Abstract. In situ U–Th–He geochronology is a potentially disruptive technique that combines laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) with microprobe noble gas spectrometry. Despite its potential to revolutionize (detrital) thermochronology, in dating not widely used due persistent analytical challenges. A major issue current approaches require the U, Th, and He measurements are expressed units of molar concentration, contrast conventional methods, which use...
Abstract Modelling plumbing systems dynamics of active volcanoes through textural and chemical studies mineral phases is crucial to unravel their eruptive behaviour, but it rarely applied in ancient volcanic volcano-plutonic systems. Here, we present an investigation the architecture, magma pre-eruptive timing Middle Triassic Dolomites area (Southern Alps) a detailed textures compositional zoning clinopyroxenes lavas dykes from Predazzo, Mt. Monzoni, Cima Pape Sciliar complexes. The...
Rutile is a common and stable mineral in porphyry Cu deposits, morphology geochemistry of rutile are recognized as potential indicator for exploration. In this study, we investigate physical features chemical composition hydrothermal the Tiegelongnan porphyry-epithermal system, well stream sediments nearby to establish method apply an exploration proxy. Four stages have been identified. Potassic alteration stage (Rt1) associated with biotite, elongated acicular shape small grain size (20–50...
Abstract. A promising primary reference material for U–Pb laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) carbonate dating is analysed and reported here. The new (RM) a botryoidal cement (C1) from sample RA138. was collected in outcrop strata of mid-Carboniferous age northern Spain near La Robla, multiple aliquots have been meticulously prepared distribution. RA138 characterized by variable U/Pb ratios (from ∼ 1 to 19) relatively high homogeneous U content (∼ 4 ppm)....
Abstract Although the evolution of residual melts in magmatic systems controls their eruptability and ore-forming potential, compositions are obscured plutonic rocks by a protracted near-solidus absence interstitial glass. Here, we trace melt from Strontian Intrusive Complex, Scotland, using element chemistry amphiboles, titanites which intergrown with amphibole rims. Laser ablation mapping reveals an abrupt change certain elements rims, sharp increases Eu/Eu* Sr/Y, decreases rare earth...