Browsing Geology (Theses and Dissertations) by Title
Now showing items 1-20 of 108
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A multi-proxy palaeoceanographic investigation of slope deposits on Porcupine Bank, NE Atlantic Ocean
(Trinity College (Dublin, Ireland). Department of Geology, 2010)High resolution imaging of the continental slope west of the Porcupine Bank by the Irish National Seabed Survey reveals an area that is smooth and relatively undisturbed. The area lacks evidence of debris flows and canyon ... -
A multi-radioisotope approach to dating sedimentation : applying Re-Os organic-rich shale and U-Pb authigenic xenotime dating to the Shannon and Pennine Basins
(Trinity College (Dublin, Ireland). Department of Geology, 2013)Sedimentary rocks are the most abundant hthologies on the Earth, covering over 70% of the planet’s surface. Quantitative dating of sedimentary rocks (especially those devoid of fossils) is critical to understanding the ... -
A study of some Irish Lower Carboniferous fish microvertebrates
(Trinity College (Dublin, Ireland). Department of Geology, 2000)Fish microvertebrates (often referred to as ichthyoliths) are a common, but largely unrecorded, component of the faunas of the Irish Lower Carboniferous. Material from four study areas within the Dinantian (Carboniferous) ... -
A study of the effects of thin dyke intrusions on mudrock
(Trinity College (Dublin, Ireland). Department of Geology, 2003)The aim of this work is to examine the thermal response of mudrock to the short lived heating event induced by dyke intrusion. The work examines five Carboniferous mudrock horizons, intruded by Tertiary olivine tholeiitic ... -
Acoustic imaging of variable water layer structure in Rockall Trough, NE Atlantic
(Trinity College (Dublin, Ireland). Department of Geology, 2012)A new application of an old technique to study the Earth’s interior is allowing us to see stratification in the ocean, providing a new insight into oceanic structure and mixing processes. The new adaptation of seismic ... -
Acritarch and prasinophyte colours as thermal maturity indicators
(Trinity College (Dublin, Ireland). Department of Geology, 2006)Measurement of changes in the reflectivity of vitrinite (fossil woody material) in incident light is the standard technique for assessing the organic maturity of sedimentary rocks. However, vitrinite grains are rare or ... -
Ammonoid biostratigraphy of the Shannon Basin, western Ireland
(Trinity College (Dublin, Ireland). Department of Geology, 2016)This study concerns ammonoid faunas from a classic turbidite succession, the Ross Sandstone Formation [Serpukhovian-Bashkirian) of the Shannon Basin, western Ireland. In addition to coastal exposures, a set of 12 behind-outcrop ... -
An experimental study of the geometry and kinematics of caldera collapse
(Trinity College (Dublin, Ireland). Department of Geology, 2008)Calderas are 1 - 100 km diameter, volcanic depressions that form primarily through m-scale to km–scale subsidence of a magma reservoir roof into an underlying magma reservoir. This study addresses several fundamental ... -
An investigation of the fluids involved in the formation of some Irish lower carboniferous dolomites
(Trinity College (Dublin, Ireland). Department of Geology, 2004)Irish Carboniferous rocks are host to an abnormally large amount of lead/zinc mineralisation and are internationally important in studies of the genesis of carbonate- hosted lead/zinc deposits. The host to mineralisation ... -
An investigation of the palynology, stratigraphy and palaeogeography of carboniferous rocks in western Irish offshore basins
(Trinity College (Dublin, Ireland). Department of Geology, 2012) -
Antrim lava field : flow patterns and provenance of interbasaltic zircons
(Trinity College (Dublin, Ireland). Department of Geology, 2005)A multidisciplinary investigation was conducted on the Antrim Lava Group (ALG). The first aspect of the research involved dating key stratigraphical horizons within the ALG, using single crystal U-Pb thermal ionisation ... -
Application of micro-computed tomography towards a taxonomic and palaeobiological reassessment of Huxley and Wright's tetrapods from the jarrow assemblage (langsettian, pennsylvanian) co. Killkenny
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2020)The Jarrow assemblage records a diverse collection of fish and tetrapods from the Leinster Coalfield (Langsettian, Pennsylvanian), south east Ireland. Specimens are preserved in an area where the Jarrow Seam thickens ... -
Aspects of landscape evolution, lineaments and fault zone mineralisation in southeast Ireland
(Trinity College (Dublin, Ireland). Department of Geology, 2008)The findings of this work are presented in 8 chapters. Chapter 2 deals with a deep weathering profile in limestone at the Timahoe, County Kildare. Detailed analysis of materials collected from an investigatory borehole ... -
Aspects of the palaeoecology and palaeoenvironmental setting of Waulsortian carbonate buildups in Ireland
(Trinity College (Dublin, Ireland). Department of Geology, 2000)The aim of this project has been to elucidate further aspects of the palaeoecology and palaeoenvironmental setting of the Waulsortian facies which developed in Ireland during the late Dinantian. Various techniques have ... -
Biometric revision of the genus Stenophragmidium Bassler, 1952 (Trepostomata, Bryozoa) from the Upper Palaeozoic
(Trinity College (Dublin, Ireland). Department of Geology, 2001)This study comprises a complete systematic revision of the trepostome genus Stenophragmidium Bassler, 1952 (Trepostomata, Bryozoa) from the Upper Palaeozoic, that incorporates stratigraphical, palaeogeographical, ... -
Broadband Surface Wave Tomography of Ireland, Britain and Other Regions
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2019)Over the last decades, seismic surface-wave studies have produced increasingly detailed images of the Earth s structure at a regional scale. In this study, we have tuned well-established techniques and when required ... -
Cenozoic flexural uplift in northwestern Ireland and sedimentation in the northeastern Irish Rockall Basin
(Trinity College (Dublin, Ireland). Department of Geology, 2002)This study brings together for the first time in northwestern Ireland the onshore and offshore evolution of a passive margin during North Atlantic rifting and tries to contribute to a better understanding of the relationship ... -
Characterising dispersed metal plumes in surficial soils and sediments in the Irish Midlands: Using isotope fingerprints to develop vectors in mineral exploration
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2018)The enhancement of mineral exploration is essential for the growing demand of base metals in the world. Successful geochemical surveys in soil and till have led to numerous discoveries. However, most of these deposits are ... -
Chemostratigraphic Investigation of Early Carboniferous Tuffs and Limestones from the Irish Midlands Based on Geochemical and Geochronological Fingerprinting
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2021)The timing of mineralisation of the Irish Zn-Pb ore field is currently poorly understood. It can be improved by more accurate stratigraphic correlations of the Carboniferous (Mississippian Subsystem) host rocks (Heckel ... -
Consequences of giant landslides on ocean island magmatism: volcanic and geochemical evolution of the Teno massif, Tenerife, and El Hierro Island (Canary Archipelago)
(Trinity College (Dublin, Ireland). Department of Geology, 2009)
