Browsing Geology by Title
Now showing items 133-152 of 300
-
Geochronology and glass geochemistry of major pleistocene eruptions in the Main Ethiopian Rift: Towards a regional tephrostratigraphy
(2022)The Main Ethiopian Rift (MER) is renowned as a focus of investigations into human origins. It is also the site of many large volcanic calderas, whose eruptions have spanned the timeframe of speciation, cultural innovation, ... -
Geochronology of the Tardree Rhyolite Complex, Northern Ireland: Implications for zircon fission track studies, the North Atlantic Igneous Province and the age of the Fish Canyon sanidine standard
(2011)The British-Irish Palaeogene Igneous Province (BIPIP) is part of the larger North Atlantic Igneous Province and includes the lava fields of Antrim, Mull, and Skye. The Tardree Rhyolite Complex (TRC) in Northern Ireland ... -
Geology and stratigraphy of the south-eastern Lake Edward basin (Petroleum Exploration Area 4B), Albertine Rift Valley, Uganda
(2016)The Lake Edward basin lies within the Albertine Rift Valley of Uganda and the Democratic Republic of Congo which forms the northern end of the western arm of the East African Rift System. It is a frontier petroleum prospective ... -
Geophysical exploration for offshore evidence of relict shorelines on the northern coast of Ireland
(Trinity College (Dublin, Ireland). Department of Geology, 2014)The current generation of postglacial Relative Sea Level (RSL) change simulations in formerly glaciated margins display significant deviations from field evidence. This is particularly true in Ireland where the RSL history ... -
Groundwater nitrate reduction versus dissolved gas production: A tale of two catchments
(2017)At the catchment scale, a complex mosaic of environmental, hydrogeological and physicochemical characteristics combine to regulate the distribution of groundwater and stream nitrate (NO3−). The efficiency of NO3− removal ... -
The Halogen Composition of the Proto-Iceland Plume Source Mantle
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2018)The study of halogens in mantle-derived melts is allowing for new and unique insights into mantle geodynamics (e.g. Kendrick et al., 2017). The current dataset of mantle halogens record the compositions of both the depleted ... -
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 ... -
Hidden Archaean and Palaeoproterozoic crust in NW Ireland? Evidence from zircon Hf isotopic data from granitoid intrusions
(2009)The presence of major crystalline basement provinces at depth in NW Ireland is inferred from in situ Hf isotope analysis of zircons from granitoid rocks that cut structurally overlying metasedimentary rocks. Granitoids in ... -
High-precision U-Pb dating of complex zircon from the Lewisian Gneiss Complex of Scotland using an incremental CA-ID-TIMS approach
(2015)A novel approach of thermally annealing and sequentially partially dissolving single zircon grains prior to high-precision Isotope Dilution Thermal Ionization Mass Spectrometry (ID-TIMS) is presented. This technique is ... -
The impact of agricultural management practices on nutrient losses to water: data on the effects of soil drainage characteristics
(2005)Against the background of increasing nutrient concentrations in Irish water bodies, this study set out to gain information on the potential of agricultural grassland to lose nutrients to water. Overland flow, flow from ... -
The impact of strike-slip, transtensional and transpressional fault zones on volcanoes. Part1: scaled experiments
(Elsevier, 2011)The activity of a regional strike-slip fault can affect or channel magma migration, can deform a volcano and can destabilise the edifice flanks. The aim of this study is to determine the location, strike, dip and slip of ... -
Inhibition of Calcite Growth: Combined Effects of Mg2+ and SO42–
(2016)Magnesium and sulfate are each known to affect calcite growth and dissolution, but little is known about their combined effects on calcite growth rates. We grew calcite using the constant composition approach at ambient ... -
Insight into the origins of metasomatism along the southern margin of the North Atlantic Craton, South Greenland
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2018)The cratonic sub-continental lithospheric mantle (C-SCLM) has been isolated from mantle convection since it stabilised more than 2.5 billion years ago. Volatiles introduced into the C-SCLM drive metasomatism, ultramafic ... -
An Integrated Multi-Isotope and Element Distribution Study of the Irish Biosphere
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2017)Geochemical variation in major and trace element concentrations and multiple isotope systems (87Sr/86Sr, δ18O, δ2H, δ13C, δ15N) are explored within the Irish biosphere. This is done through the analysis of an array of ... -
Integrated simulation for improved mineral recovery processes
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2021)The consumption of mineral and metals is increasing as the population grows and the demand for mineral resources will remain high and evolve as society moves towards a carbon-neutral future. The increasing demand for metals, ... -
The interaction between volcanoes and strike-slip, transtensional and transpressional fault zones: Analogue models and natural examples
(Elsevier, 2011)Regional strike-slip faulting can control magma movements, deform volcanoes and may destabilise their flanks. The aim of this study is to address this problem by comparing two natural examples, Basse Terre Island volcanoes, ... -
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 ...