Publications

Elemental Scientific Lasers’ Scientific Publications

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Impact of metamorphism and deformation on pyrite and precious metals at the epithermal Haile deposit, South Carolina, USA

ID: 689142
Year: 2025
Products: ~
Authors: Amissah, RK;
Journal: Thesis

The Haile deposit, South Carolina, is a high-tonnage, low-grade, pyrite-dominated, Au-Ag, low-sulfidation epithermal deposit hosted in the Carolina terrane and formed during the Neoproterozoic. It underwent greenschist facies metamorphism during the Ordovician Taconicorogeny in which sulfides, precious and critical metals endured remobilization. The degree ofphysical and chemical remobilization is characterized here with a focus on the role of pyritetexture, trace element abundance within pyrite, and the brittle-ductile behavior of pyrite during remobilization. Although remobilization of sulfides, precious and critical metals is a common occurrence in metamorphosed hydrothermal deposits, both the impact of remobilization deposit-wide and wh...

From Mantle Source to Ore Deposit: Tracing Magmatic and Hydrothermal Processes of Critical Metal Enrichment

ID: 689141
Year: 2025
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Authors: Hoß, A;
Journal: Thesis

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U-Pb Geochronology of Paleosol and Vertebrate Fossil Bone Carbonate Cements by LA-ICP-MS: New Strategies for Dating the Terrestrial Record in Deep Time

ID: 689140
Year: 2025
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Authors: Palafox, LEA;
Journal: Thesis

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Monazite Fission-Track Dating of Erosion and Tectonics in the Nepalese Himalaya

ID: 689139
Year: 2025
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Authors: Barth, S;
Journal: Thesis

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Conception de l'interface réseautique d'un système d'acquisition de données pour un réseau de capteurs à grande échelle reliés par fibre optique

ID: 689138
Year: 2025
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Authors: Lessard, G;
Journal: Thesis

Certaines expériences en physique des particules telles que nEXO et ARGO, s’appuient sur une grande surface recouverte de photodétecteurs dans un gaz noble liquéfié (4.6 m2 pour nEXO). Ces deux expériences utilisent ce volume de gaz noble refroidi afin d’étudier la désintégration double-bêta sans neutrinos et la matière sombre respectivement. L’électronique dans le cryostat doit pouvoir lire l’information des détecteurs et acheminer les données produites au système d’acquisition de données à l’aide d’un système de communication opérant à des températures cryogéniques. Ces températures sont déterminées par la température du gaz noble utilisé, soit de 165 K pour le xénon liquide et de 87 K pour l’arg...

Effects of boiling and seawater mixing on hyper-enrichment of antimony in active polymetallic seafloor massive sulfide hydrothermal diffusers at the Aegean Kolumbo volcano

ID: 689137
Year: 2025
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Authors: A, P;S, K;N, Z;V, P;R, A;P, N;P, P;A, S;Q, A;
Journal: researchgate.net

Coupled to magmatic degassing of metal (loid)‐ and volatile‐rich fluids, boiling, and fluid-seawater mixing mechanisms are responsible for Sb hyper-enrichment in the Kolumbo SMS mineralization. Our results raise the possibility of (sub)seafloor Sb-rich mineralization at Kolumbo and other submarine volcanoes along the 500 km of the Hellenic Volcanic...

Orogenic high-T granitoids of the central Grenville Province: characteristics and geodynamic implications

ID: 689136
Year: 2025
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Authors: Yip, CY;
Journal: Thesis

Conventional models of collisional orogens predict S-type granitoid emplacement during the orogenic climax, whereas high-T (also known as A-type) granitoids, commonly associated with mantle-derived magmas, are expected to form by late-orogenic extensional collapse. However, the Grenville Province lacks significant syn-orogenic S-type granites, while high-T granitoid bodies were intermittently emplaced in its hinterland throughout the duration of the Grenvillian Orogeny. These rocks are particularly abundant in central Grenville, where they intrude Mesoproterozoic Quebecia crust, in the granulite-facies mid and low-P segments of the orogenic hinterland and are spatially associated with ~1.16-1.13 Ga anorthosites. A review of a literature dat...

Age and petrogenesis of Li pegmatites in southern Newfoundland

ID: 689135
Year: 2025
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Authors: Saha, D;
Journal: Thesis

Canada’s efforts to develop low-carbon technologies has increased the demand for critical minerals, including lithium. Southern Newfoundland is a region displaying favourable geological conditions to host lithium pegmatites, particularly in the aureoles of voluminous, geochemically evolved plutonic rocks. The present research is focussed on the Killick pegmatite field, a swarm of lithium-cesium-tantalum (LCT) pegmatites discovered in 2021 in southern Newfoundland. Fieldwork focussed on mapping and sampling multiple spodumene-bearing pegmatite dikes. The dykes intruded metasiltstone, meta-quartz arenite, and metavolcanic rocks of the Dolman Cove formation. Due to the homogeneity of the >10 dykes in the Killick swarm, three dykes form the f...

Fish scales and plant leaves as noninvasive tools for ecological and environmental monitoring

ID: 689134
Year: 2025
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Authors: Parvez, MS;
Journal: Thesis

Comprehending the intricate ecosystem dynamics and rapid changes in the global environment is important in light of the continuous loss of biodiversity and the widespread effects of anthropogenic contamination. Conventional approaches frequently entail invasive sampling, which can injure organisms, disturb ecosystems, and restrict long-term research, emphasizing the need for noninvasive substitutes. The development and application of effective, practical, and noninvasive assessment methods has become a top goal in ecological and environmental research towards sustainable management. This research investigates the possibilities of using fish scales and plant leaves as robust yet convenient noninvasive tools for ecology and ecosystem health r...

Synergy of In-Situ and Remote Sensing Observations for Understanding Ozone Variability and Low-Level Jet Dynamics

ID: 689133
Year: 2025
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Authors: Roots, MED;
Journal: Thesis

Abstract Unavailable...

Utilisation de la chimie des otolithes pour caractériser le régime alimentaire du sébaste (Sebastes sp.)

ID: 689131
Year: 2025
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Authors: Gandin, A;
Journal: Thesis

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Fourier Analysis of Dynamic Catalyst Surfaces

ID: 689130
Year: 2025
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Authors: KUST, UK;
Journal: Thesis

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The Rare Earth Mineralization of the Mineral Hill Carbonatites, Lemhi County, Idaho

ID: 689129
Year: 2025
Products: New Wave;
Authors: Murchland, MA;
Journal: Thesis

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Market potential of innovative technology

ID: 689128
Year: 2025
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Authors: SCHMIDT, P;
Journal: Thesis

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Understanding Multi-Scalar Exchange Networks Along the Tanzanian Swahili Coast Through the Geochemical Examination of Copper-Based Metals, 7th-15th Centuries CE

ID: 689127
Year: 2025
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Authors: Brewer-Jensen, EM;
Journal: Thesis

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The Effect of Capping Ligands on the Migration of Silver Out of Silver Nanoparticle-Enabled Polymer Packaging

ID: 689126
Year: 2025
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Authors: Pansare, SB;
Journal: Thesis

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in Periodontal Treatment “Beams of Hope” in Shadows

ID: 689125
Year: 2025
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Authors: Biswas, S;Singh, N;Singh, B;
Journal: researchgate.net

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USO DE LASER DE ALTA POTÊNCIA NO TRATAMENTO DE HEMANGI-OMA ORAL-RELATO DE CASO CLÍNICO

ID: 689124
Year: 2025
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Authors: Cordeiro, IP;Sukekava, F;
Journal: Journal of Clinical Implantology and Surgery

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Investigation on Hafnium Oxide Mixtures for UV Coatings for Fusion Energy Applications

ID: 689123
Year: 2025
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Authors: Weiss, M;
Journal: Thesis

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Insights into Fluid-Rock Interactions on the CV3 Chondrite Parent Body Through the Use of Secondary Garnets in the Allende CV3 Chondrite and Terrestrial Skarns

ID: 689121
Year: 2025
Products: NWR193;
Authors: Johnson, J;
Journal: Thesis

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HYDROTHERMAL MINERALIZATION DURING CONTINENTAL BREAKUP AND IN YOUNG OCEAN BASINS

ID: 689120
Year: 2025
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Authors: Follmann, J;
Journal: Thesis

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The detrital zircon record of Proterozoic orogenic unroofing: Case

ID: 689119
Year: 2025
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Authors: Lockie, JH;
Journal: Thesis

Investigating sedimentary successions broadly contemporaneous with supercontinent amalgamation is critical to understanding sediment dispersal in response to convergent tectonics. At the heart of North America lies Laurentia, a complex of crustal fragments accreted during the broader assembly of the supercontinent Nuna. Sedimentary basins across Laurentia are hypothesised to have recorded the erosion of uplifting orogens in the aftermath of the supercontinent formation. This hypothesis is tested on three basins in the Northwest Territories and Nunavut, Canada (specifically the ~1.9 Ga Nonacho basin, ~1.9 Ga the East Arm basin, and the ~1.6 Ga Elu basin), which have thus far lacked stratigraphically complete geochronological analysis. The re...

Focusing a spherical shock wave formed by laser ignition in an elliptical cavity can initiate detonation. To clarify the effect of the detonability of premixture and shock intensity on detonation onset, laser ignition experiments were conducted with stoichiometric ethylene-oxygen premixture at the initial pressure of 5-200 kPa and laser emission energy of 50-150 mJ. The flow field was visualized by high-speed schlieren imaging. As a result, four different types of flow field were observed: moderate initiation, rapid initiation, general flame acceleration, and shock-only flow field. In the moderate initiation case, shock-flame complexes engulfed the leading shock wave and collided to cause a local explosion. In higher initial pressure, rapid detonation onset was observed when a local explosion occurred behind the leading shock. In the failed cases, although the initial shock, the reflected shock, and the combustion wave were observed, except in the shock-only case, a local explosion did not occur after the triple-points’ collision. Each case was classified as success or failure, and the success/failure distribution was compared with the critical energy of direct detonation initiation.

ID: 689118
Year: 2025
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Authors: Souza, GP;
Journal: Thesis

Sedimentary deposits from passive margins can provide information about magmatic events and paleoenvironmental conditions during the tectonic evolution of ancient continental blocks. At the end of the orogenic cycle, however, the sedimentary rocks that compose the passive margins may be subducted and their primary characteristics and stratigraphic relationships lost due to metamorphism and deformation. This is the case of the Southern Brasília orogen, which currently exposes rocks that composed the SW passive margin of the São Francisco paleocontinent. The Passos Nappe is an allochthonous structure in the Southern Brasília orogen formed by metasedimentary rocks and metaigneous rocks metamorphosed in greenschist to granulite facies condit...

Crystalline Records of Mafic Arc Magmas Across the Sierra Nevada Batholith, California

ID: 689117
Year: 2025
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Authors: Ryan-Davis, J;
Journal: Thesis

Our planet Earth is unique among the rocky planets of the solar system in having compositionally evolved continental crust—the reason for life as we know it. Processes that create continental crust occur at subduction zones where magmas differentiate, evolving from primary mantle-derived basalt to produce a diverse range of compositions that erupt at arc volcanoes and comprise the bulk of the continental crust. Many processes for differentiation have been proposed, yet, recognizing and evaluating the role of pre-existing crust in these processes remains challenging. This thesis includes two studies of mafic intrusions in the Sierra Nevada batholith— the well-studied Mesozoic continental arc of the western North American Cordillera. The ...

Quantitative Analysis of Trace Elements in Flotation Tailings from the Tapuli Mine, Kaunisvaara, Sweden: A Case Study

ID: 689116
Year: 2025
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Authors: Lindell, M;
Journal: Thesis

As of early spring 2024, Kaunis Iron AB, a Swedish mining company operating in the Tapuli iron skarn deposit located in northern Sweden, started up a freshly installed flotation process within their processing plant. The flotation process created another waste stream enriched in sulfides, mainly pyrrhotite, which can host chalcophile elements such as Cobalt, Copper, and Nickel. This thesis aims to determine the trace element content and its relation to minerals in the flotation tailings, and to evaluate the economic potential. XRF analysis was used to determine the major elements, ICP-MS for the trace elements, and LA-ICP-MS was used to analyze the gold content. The result of the major elements from the XRF was used for stoichiometric calcu...

Advanced dynamic modeling of multi-storey structures controlled by Hysteretic Tuned Mass Dampers (HTMD) model updating, experimental validation via distributed sensor networks

ID: 689114
Year: 2025
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Authors: Janga, VY;
Journal: Thesis

This dissertation aims to provide a thorough examination of the nonlinear dynamic modelling of structures equipped with Hysteretic Tuned Mass Dampers (HTMDs) for vibration mitigation. The employed approach combines rigorous model updating, experimental validation using distributed sensor networks, and high-fidelity computational simulations. This study systematically integrates numerical modelling with experimental structural behaviour to address the fundamental challenge of reducing structural vibrations generated by seismic and dynamic loads. The experimental framework is based on a modular prototype of a five-storey building, fabricated from high-strength carbon steel whose model has been implemented in OpenSees. A comprehensive testing ...

Geochronology and Fluid Characterization of Gold Mineralization in the Yellowknife Gold Belt

ID: 689113
Year: 2025
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Authors: Cho, V;
Journal: Thesis

The age of mineralization events provides information on the regional and local processes responsible for their formation. The minerals associated with gold in orogenic gold deposits are typically quartz and sulfides. However, quartz is not a datable mineral whose deposition typically predates gold. Ages can be obtained from sulfides, which are linked to gold deposition primarily through a geochemical model that links sulfide and gold precipitation (Ridley and Diamond 2000) as well as by the systematic association of sulfur and gold geochemical anomalies (Langlois, 2020). However, multiple sulfide generations are common in orogenic gold deposits (Laflamme et al., 2018) and their paragenetic relationships to gold are not always clear. This i...

The geochronology of plutonism associated with the Great Glen Fault, northern Scottish Highlands

ID: 689112
Year: 2025
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Authors: MacRae, C;
Journal: Thesis

The Northern Highlands of Scotland contain Palaeozoic intrusions emplaced during collision of continents Baltica and Laurentia of the late Caledonian Scandian Orogeny. However, uncertainties remain regarding the accuracy of existing isotope dilution geochronology and understanding of the geodynamic history in relation to spatial and temporal distribution of intrusions. This study obtained emplacement dates by zircon U-Pb LA-ICP-MS (laser ablation-inductively coupled plasma-mass spectrometry) for the Strontian intrusion Sunart facies (423.5 ± 2.1 Ma), Strontian Sanda facies (418.2 ± 6.3 Ma), Helmsdale intrusion (417.0 ± 4.0 Ma) and Abriachan intrusion (418.2 ± 5.6 Ma). These dates provide confidence in existing literature, and a new date...

Crustal evolution of the Southern Benin-Nigerian shield: insights from late post-orogenic lithium-cesium-tantalum (LCT) pegmatite mineralization

ID: 689111
Year: 2025
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Authors: Nweke, ND;
Journal: Thesis

Lithium-cesium-tantalum (LCT) pegmatites are a key source of economic lithium. The timing of LCT pegmatite crystallization within the context of an orogenic system (i.e., pre-, syn- and post-orogenic) appears to vary globally and exerts a primary influence on the distribution of lithium mineralization in orogenic belts. The recent advances in in-situ Rb-Sr mica geochronology have enabled the direct dating of lepidolite, a major phase in LCT pegmatites. When combined with in-situ Rb-Sr, Lu-Hf, and U-Pb geochronology on other related major and accessory phases, the timing of LCT pegmatite crystallization can be accurately determined and placed in the context of a region’s magmatic and thermometamorphic history. Here, we present new in-situ ...

Carbon isotopes as monitoring tools for active volcanic systems

ID: 689110
Year: 2025
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Authors: D'Arcy, F;
Journal: Thesis

Volcanic eruptions can cause sudden devastation to communities, vegetation, and economies. As highlighted in the Sustainable Development Goals released by the United Nations, efforts to understand how and why certain volcanoes behave the way they do are needed to mitigate the risks associated with these natural disasters. In this thesis, I focus on how volcanic emissions and their effect on the surrounding environment can provide clues about volcanic activity. Specifically, I focus on carbon release from volcanoes using isotopes to advance our knowledge of precursory signals and expand our applications of isotopic tools. In chapters 1 and 2, I report a new methodology I developed for collecting stable carbon isotopes in volcanic gas plumes,...

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