A5033640298- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- Geological Studies and Exploration
- Geological and Geophysical Studies Worldwide
- Metal Extraction and Bioleaching
- Geochemistry and Elemental Analysis
- Hydrocarbon exploration and reservoir analysis
- Methane Hydrates and Related Phenomena
- Paleontology and Stratigraphy of Fossils
- earthquake and tectonic studies
- Extraction and Separation Processes
- Geology and Paleoclimatology Research
- Geothermal Energy Systems and Applications
- Mineralogy and Gemology Studies
- CO2 Sequestration and Geologic Interactions
- Atmospheric and Environmental Gas Dynamics
- Global Energy and Sustainability Research
- Cryospheric studies and observations
- High-pressure geophysics and materials
- Evolution and Paleontology Studies
- Mercury impact and mitigation studies
- Reconstructive Facial Surgery Techniques
- X-ray Spectroscopy and Fluorescence Analysis
- Groundwater flow and contamination studies
- Soil Geostatistics and Mapping
Geological Survey of Denmark and Greenland
2013-2024
Eni (Italy)
2024
Colorado School of Mines
2003-2016
National Laboratory of Energy and Geology
2008-2011
University of Lisbon
2006-2011
National Institute of Engineering, Technology and Innovation
2006-2008
Instituto Geológico
2004
The major input of mercury (Hg) to the Arctic is normally ascribed long-range transport anthropogenic Hg emissions. Recently, alarming concentrations in meltwater from Greenland Ice Sheet (GrIS) were reported with bedrock as proposed source. Reported 100 1000 times higher than known freshwater systems Greenland, calling for independent validation extraordinary and conclusions. Here, we present measurements at 21 glacial outlets West showing that extreme cannot be reproduced. In contrast,...
Geologic samples are extremely diverse and share a tendency for both heterogeneity complexity. This is especially true ores, which commonly result from complex interplay of processes in highly dynamic environments. In recent years, number tools allowing the chemical mapping major (e.g., mineral liberation analysis, MLA), minor electron microprobe, EPMA), trace laser ablation-inductively coupled plasma-mass spectrometry, LA-ICP-MS) elements geologic at ~1- to 50- μ m resolution over mm2 areas...
Abstract Europe relies mainly on imports of critical raw materials (CRMs) for its industry, not least the vital ones emerging green energy technologies. Among main metal and mineral producers in today, Nordic countries (specifically, Greenland, Norway, Sweden Finland) share a diverse geology with various deposit types formed over long geological time span. This has led to large near-future potential regard CRM production. Based current knowledge datasets, we assess CRMs that are specifically...
The Iberian Pyrite Belt is one of the most outstanding European ore provinces and hosts largest concentrations massive sulfide deposits today, totaling 1,850 million metric tons (Mt) in more than 90 deposits. Lagoa Salgada a small orebody (estimated to have at least 4 Mt) and, as yet, an unexploited found within this province. It located 80 km northwest Neves Corvo occurs ~130 m beneath sediments Sado Tertiary basin, limiting interpretation drill hole data. folded, faulted, interpreted occur...
During the Middle Devonian-earliest Carboniferous, sedimentation in North-East Greenland was characterised by deposition of Old Red Sandstone (ORS) molasse Hudson Land Basin. In this area, Givetian conglomerates Vilddal Group, which postdate a first stage Caledonian folding, unconformably sit on core large-scale anticlines and above deep erosional surface that exposed Late Silurian migmatitic rocks lower part Nathorst Group. The ORS succession records folding intrabasinal unconformities are...
Abstract Volcanic rocks from the Albernoa area essentially consist of calcalkaline quartz-feldspar-phyric coherent and hyaloclastic rhyodacites, alkaline tholeiitic basaltic rocks. Binary plots show that high-field-strength elements behaved as immobile elements, allow for identification two felsic rock suites. Silica alkali mobility, however, is reflected by compositional scatter on major-element diagrams: display rhyolitic to apparent andesitic compositions, mafic dacitic compositions....
Abstract The Paleoproterozoic Mârmorilik Formation in the Karrat basin of West Greenland hosts Black Angel Zn–Pb deposit. Chlorine-rich scapolite, zones with vuggy porosity and quartz nodules ore-bearing marble are herein interpreted to represent metamorphosed, vanished, replaced evaporites, respectively. Mineralization is closely associated anhydrite δ 34 S values (5.2–12.6‰) broadly comparable published for seawater sulfate. Considering fundamental attributes mineralization host sequence,...
Abstract This work investigates the relationships between partial melting, melt extraction, pluton growth and silicic volcanism in garnet-bearing felsic volcanic rocks that were extruded Iberian Pyrite Belt, at ca . 345 Ma. The garnets are of peritectic origin, displaying textural chemical features disequilibrium crystallization during melting reactions involving biotite high temperatures (up to 870 °C) middle-lower crust. Major element composition suggests compositional equilibrium with...
The Barrigão re-mobilized copper vein deposit, Iberian Pyrite Belt, southern Portugal, is located about 60 km south of Beja and 10 southeast the Neves Corvo ore in Alentejo Province. deposit structurally associated with a NE–SW striking fault zone inferred to have developed during late Variscan deformation. itself breccia-type ore, characterized by up four ore-forming stages, stages showing evidence fluid-driven element re-mobilization. dominated chalcopyrite + tennantite-tetrahedrite, minor...
Abstract Mafic volcanic rocks of the Kangilleq Formation Paleoproterozoic Karrat Group host volcanogenic massive sulfide (VMS) mineralization in area central Kangiusap Kuua, West Greenland. The mafic display evidence subaqueous, effusive eruption and redeposition by mass debris flows generated along fault scarps on sea floor. A zone semiconformable quartz alteration disconformable chlorite within hydrothermal breccias tuff near top sequence is interpreted to reflect a synvolcanic system....
In the Rinkian belt of West Greenland, reworked Archaean gneisses are overlain by supracrustal successions Palaeoproterozoic Karrat Group, defined Henderson & Pulvertaft (1967) as comprising two formations: Qeqertarssuaq Formation and Nûkavsak Formation. The group was later extended to include Mârmorilik (Henderson 1987) originally considered be age 1967) but shown Palaeoproterozoic, resting with a depositional unconformity on gneiss (Garde 1978). (1987) suggested that carbonatedominated...
<p>A new tectonic model is presented to explain the tectonostratigraphic evolution of Paleoproterozoic Karrat Group in central West Greenland and polyphase deformation, magmatism metamorphism Rinkian orogen recorded rocks Archaean complexes. The (from c. 71°00’ 73°00’ N) formed an intra-cratonic sag basin after 2000 Ma with basal quartzites Qaarsukassak Mârmorilik formations unconformably overlaying gneisses Rae...
The Black Angel Zn-Pb ore deposit is hosted in folded Paleoproterozoic marbles of the Mârmorilik Formation. It exposed southern part steep and inaccessible alpine terrain Rinkian Orogen, central West Greenland. Drill-core data integrated with 3D-photogeology hyperspectral imagery rock face allow us to identify stratigraphic units extract structural information that contains geological setting this important deposit. stratigraphy distinguishes chemical/mineralogical contrast within...