Geology (Theses and Dissertations)
Recent Submissions
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Seismic Tomography of South America: Continental Lithosphere, Subduction-Zone Structures, and the Origins of Intraplate Magmatism
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2024)The lithospheric structure of South America records its long and complex tectonic evolution, during which it has influenced the distribution and composition of local magmatism, the geometry of the subduction at its western ... -
Common Era sea-level change in the North Atlantic
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2024)Relative sea-level (RSL) varies in time and space in response to a suite of different controlling mechanisms. The reliable reconstruction of RSL using foraminifera buried in high-saltmarsh sediments enable the development ... -
From synergy to inhibition: Effects of multi component solutions on the crystallization of divalent carbonates in natural and synthetic environments
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2024)The understanding of the processes governing the mechanisms, kinetics, and pathways of carbonate crystallization is crucial in the context of carbon capture and storage through mineralization. However, uncertainty still ... -
Cold-water corals from the deep-sea to the TV: development of shelf-edge mounds, assessment of anthropogenic stressors and geochemical parameters, and impacts of science communication
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2024)Cold-water corals (CWCs) are the hidden reef-builders of the deep ocean. They are out of sight, yet they perform important functions for marine ecosystems, play a role in stabilising climate change, and hold clues to study ... -
Origin and evolution of the Mesoarchean Aouéouat greenstone belt and associated gold mineralisation
(Trinity College (Dublin, Ireland). Department of Geology, 2016)This Aouéouat greenstone belt is situated in the Tasiast-Tijirit Terrane of the Reguibat Shield, part of the West African Craton. Petrographic, geochronological, geochemical and isotopic studies of the Aouéouat greenstone ... -
Advances in the detection of particulate matter and aerosols in peat: Exploring Icelandic volcanic activity and multi-source deposition in Ireland
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2024)This Ph.D. research project develops new techniques for the detection of particulate matter and aerosols in peat, a relatively underexplored atmospheric archive and carries out novel investigations of atmospheric deposition ... -
The zircon record of the Sudbury impact crater and its implications for the early Earth
(Trinity College (Dublin, Ireland). Department of Geology, 2016)In the absence of widespread rocks older than 4.0 Ga, the earliest terrestrial material and the only direct evidence for the nature of the Earth's very early crust are tiny zircon crystals. The chemical compositions of ... -
Interaction of Ca-Mg Carbonates with Rare Earth Element bearing Fluids under Ambient and Hydrothermal Conditions
This thesis aims to investigate the mechanisms of formation of hydroxylbastnäsite, a significant source of rare earth elements, in order to uncover the fundamental principles governing its crystallisation. The precise ... -
Structure and evolution of the upper mantle of the Australian Plate and North Atlantic Ocean from waveform tomography
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2023)With the expansion of regional and global seismic networks and the advancing of tomographic techniques, tomography models are able to reveal the heterogeneities in the Earth's interior with an increasing amount of detail. ... -
The basement geology of the Porcupine High - a key transatlantic link between the Caledonides and Appalachians
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2023)In order to better reconstruct the basement geology of the western Irish offshore and the North Atlantic, constraining the geologic evolution of the Porcupine High region is key. Located 200 km west of Ireland, the Porcupine ... -
Cobalt of the Tyrone Igneous Complex: geochemistry of mafic hosted sulphides and remobilisation
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2023)Primary sulphide mineralisation in mafic rocks and secondary remobilised sulphides contain significant cobalt and relate to early Palaeozoic ocean closure and arc-continent collision in the Irish Caledonian terrane. This ... -
The Akcal Epithermal Deposit: An Example of Low-Sulfidation Gold Mineralization in Western Turkey
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2023)The Akcal epithermal Au-Ag deposit is located on the Biga Peninsula, southwestern Turkey and is estimated to contain 32.5 million tonnes of mineralization at an average grade of 1.03 g/t Au, equivalent to 33.5 tonnes of ... -
The carboniferous geology of the Carrick-on-Suir syncline, Southern Ireland
(Trinity College (Dublin, Ireland). Department of Geology, 1980)A geological map of the Carrick-on-Suir Syncline is presented at a scale of 1:31680 (2 inches to one mile). The thirteen mapping units proposed are discussed in detail; all but the lowermost are Carboniferous in age. The ... -
Applying geogenic methods and decision-making tools to model radon at local and regional scales.
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2023)Radon is an environmental health hazard for indoor environments, caves and underground mines exposure to which is related to an increased probability of developing lung cancer. Globally, radon is the second leading cause ... -
Heinrich Events and the British-Irish Ice Sheet: evidences of palaeoceanographic changes in the Rockall Trough
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2023)The Porcupine Bank is an offshore plateau connected to the Irish Shelf west of Ireland. Its western flank is affected by several water masses associated with the Atlantic Meridional Overturning Circulation (AMOC) and other ... -
Determining the depths and timescales of pre-eruptive processes before the historical 1538 Monte Nuovo eruption (Campi Flegrei caldera, Italy)
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2022)Campi Flegrei, Italy is one of the most populated caldera volcanoes on Earth and a detailed understanding of its sub-volcanic magma system and pre-eruptive processes are essential for effective hazard mitigation. Of ... -
The Palaeo-Ecology and Geochemistry of Potential Source and Reservoir Microbialites in the Ediacaran-Cambrian Sirab Formation, Sultanate of Oman
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2022)Background Rationale & Aim; Ediacaran - Cambrian microbial carbonates are known to range from West Africa to Arabia and Pakistan. In the Sultanate of Oman, these microbialites serve as both source rock and reservoir in the ... -
Exploitation of Decorative Stone in Victorian Ireland: From Quarry to Building
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2022)Ireland contains a diverse range of rock types that are characterised as igneous, sedimentary or metamorphic in origin, which have been widely utilised for building, and to a lesser extent decorative, purposes over the ... -
Spectral Gamma Ray (SGR) Analysis of Sedimentary Environments in Early Continental Rift Basins: Implications for Petroleum Exploration
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2022)Continental rift basins are structures of global geoscientific significance, as they hold over 30% of the world?s giant oil fields and serve as modern day examples of unique biodiversity sites, typically operating as ... -
Constraints on the thermal conditions within the cratonic lithospheric mantle through time
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2022)The stabilization of Earth s first continents is inescapably linked to the formation of the ancient cratonic lithospheric mantle. The cratonic lithospheric mantle is widely considered to have formed as a residue of extreme ...