Geology: Recent submissions
Now showing items 221-240 of 315
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Evaluation of stable isotope analysis as a tool to determine nitrate sources in Irish groundwaters
(Trinity College (Dublin, Ireland). Department of Geology, 2007)This project, which explores combined and δ15N and δ18O analyses on soil-water and groundwater nitrate in conjunction with conventional chemical analysis of water constituents, primarily aims to give a critical evaluation ... -
The sedimentology and stratigraphy of the Early Triassic Sherwood Sandstone Group in the East Irish Sea and Cheshire Basins of NW England
(Trinity College (Dublin, Ireland). Department of Geology, 2004)The existing stratigraphic nomenclature applied to the Early Triassic Sherwood Sandstone Group in NW England has resulted from more than 150 years of geological investigation but is characterised by a stratigraphic system ... -
Processes of magmatic differentiation within the southern British and Irish Palaeogene Igneous Province
(Trinity College (Dublin, Ireland). Department of Geology, 2009)This thesis presents a geochemical study of magma - crust interaction within the volcanic centres of the southern British and Irish Palaeogene Igneous Province. Three centres occur in northeast Ireland; the Carlingford ... -
The influence of fractures on topography and groundwater flow in the Burren and Gort lowlands, western Ireland
(Trinity College (Dublin, Ireland). Department of Geology, 2006)The primary hypothesis of this thesis is that "Topographic depressions are located along areas of high fracture density" and by association that topographic depressions will identify areas of high fracture density, A ... -
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 ... -
Sedimentology, chemostratigraphy, and geochronology of the lower Huqf Supergroup, Oman
(Trinity College (Dublin, Ireland). Department of Geology, 2002)The lower part of the Huqf Supergroup, comprising the Abu Mahara Group and the Hadash and Masirah Bay Formations of the Nafun Group, forms the oldest deposits exposed in Oman. This thesis is based on field study of this ... -
Phosphorus in Irish aquifers : implications for input to surface waters
(Trinity College (Dublin, Ireland). Department of Geology, 2002)This project examines phosphorus levels in a range of Irish hydrogeological situations, both to fill this gap in basic scientific knowledge, and to determine the circumstances in which concentrations likely to trigger ... -
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 ... -
Recognition of abnormal thermal histories of Jurassic source rocks from integrated analyses of vitrinite reflectance and organic matter colour / fluorescence
(Trinity College (Dublin, Ireland). Department of Geology, 2002)By investigating three sedimentary horizons through the aureole of a Tertiary dyke intruding a Middle Jurassic sedimentary section in NE Skye, the thermal response rates of the various organic maturity indicators to ... -
The structure of Guadeloupe, Maderas and Mt Cameroon volcanoes and the impact of strike-slip movements
(Trinity College (Dublin, Ireland). Department of Geology, 2010)There are three kinds of strike-slip faults: pure strike-slip, transtensional and transpressional. They have been recognized in all geodynamic environments and are the most common fault type associated with volcanic activity. ... -
The use of dissociated crinoid ossicles as biostratigraphical and palaeoecological tools in the Carboniferous of northwest Ireland
(Trinity College (Dublin, Ireland). Department of Geology, 2001)Fossil crinoids were investigated from the Lower Carboniferous (Visean) rocks of northwest Ireland. In this area the deltaic Mullaghmore Sandstone Formation stratigraphically separates the Bundoran Shale Formation (Arundian) ... -
Provenance and flux of late quaternary sediment, Southeast Ireland
(Trinity College (Dublin, Ireland). Department of Geology, 2002)The major sediment routing systems of Southeastern Ireland in the vicinity of the Leinster Massif were examined and quantified. Samples were taken from four of the major river systems, the Avoca, Barrow, Liffey and Slaney ... -
The provenance of the Mississipian Ballyvergin Shale an integrated palynological and lithostratigraphic investigation
(Trinity College (Dublin, Ireland). Department of Geology, 2004)The Ballyvergin Shale Formation (BSF) is a unique and enigmatic formation within the Irish Toumaisian lithostratigraphy. While a definite provenance for the formation has not been identified speculation of a north, north-west ... -
Nitrogen and carbon isotopes in fossil aquatic ecosystems
(Trinity College (Dublin, Ireland). Department of Geology, 2009)In a modem ecosystem, the trophic level of organisms can be distinguished on the basis of their nitrogen and organic carbon isotopic signature (DeNiro & Epstein 1978 and 1981). Due to fractionation during the assimilation ... -
Palynological correlation of Mississippian (Carboniferous) stages in Western Europe and the USA
(Trinity College (Dublin, Ireland). Department of Geology, 2009)Palynological assemblages from the Late Devonian - Mississippian of Kentucky and the Mississippi Valley have been studied. Productive samples have been obtained from two outcrops situated in northeast Kentucky and eight ... -
Stratigraphy and correlation of the Sarab Formation, Al Huqf Area, with the subsurface ara group play systems of Oman
(Trinity College (Dublin, Ireland). Department of Geology, 2010)This study identifies and defines for the first time the Sarab Formation, a new formation in the uppermost part of the Ediacaran - Cambrian Huqf Supergroup of the Sultanate of Oman. The potential importance of this new ... -
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 ... -
Investigation of the stratigrphy, maturation and source-rock potential of Carboniferous black shales in the Dublin Basin
(Trinity College (Dublin, Ireland). Department of Geology, 2000)The Viséan part of the Dublin Basin stratigraphic succession is dominated turbiditic calcarenites interbedded with grey/black shales. Sedimentological analysis of four exploration wells drilled in the north part of 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) ... -
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 ...
