Geology (Theses and Dissertations): Recent submissions
Now showing items 101-120 of 130
-
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 ... -
Fluid-rock interaction in the Tejeda Caldera, Gran Canaria, and the Las Canadas Caldera, Tenerife (Canary Islands)
(Trinity College (Dublin, Ireland). Department of Geology, 2010)This PhD thesis investigates the processes, products, and timing of fluid-rock interaction in the fossil hydrothermal systems of the Tejeda caldera, Gran Canaria and the Las Canadas caldera, Tenerife (Canary Islands), using ... -
Sedimentology analysis and correlation of the Mullaghmore sandstone formation in the north and north-west of Ireland
(Trinity College (Dublin, Ireland). Department of Geology, 2003)The aims of this study were to provide a sedimentological analysis and environmental interpretation for the Mullaghmore Sandstone Formation and its equivalents, extending from south Donegal to south Sligo and into the north ... -
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 ... -
Understanding leakage from a fault-sealed CO2 reservoir in east-central Utah: a natural analogue applicable to CO2 storage
(Trinity College (Dublin, Ireland). Department of Geology, 2006)This thesis investigates a natural CO2 reservoir to define the factors that can cause leakage and determine the rates and consequences of CO2 leakage on the surrounding environment. Situated at the northern end of the ... -
Evolution of the north east rift zone of Tenerife, Canary Islands : a multi-disiplinary approach
(Trinity College (Dublin, Ireland). Department of Geology, 2010)Tenerife Island, Canary archipelago, is at the centre of intense geological research and debate. The island is composed by three principal rift-zones that enclose major collapse structures. This study provides a ... -
Mesozoic-Tertiary tectonics of SE Ireland and genetic link to offshore extensional basins
(Trinity College (Dublin, Ireland). Department of Geology, 2001)This work shows that Mesozoic-Tertiary tectonics in Central-East and SE Ireland is more significant than previously recognised. A review of the existing geological and geophysical literature and structural mapping around ... -
Iron oxide and associated base metal mineralisation in the Central Midlands Basin, Ireland
(Trinity College (Dublin, Ireland). Department of Geology, 2000)This study describes and characterises the iron oxide mineralisation (hematite, magnetite, silica) associated with base metal mineralisation in the Irish Central Midlands Basin. The iron oxide mineralisation occurs over a ... -
Testing the utility of an organic geochemical approach to Holocene sea-level change in the Shannon estuary
(Trinity College (Dublin, Ireland). Department of Geology, 2013)This project tests a recently developed, geochemically-based technique for relative sea- level (RSL) reconstruction to assess its applicability in the Shannon region. The technique is underpinned by the identification of ... -
Exhumation in Irish sedimentary basins and implications for hydrocarbon exploration, offshore Ireland
(Trinity College (Dublin, Ireland). Department of Geology, 2006)Exhumation, the removal of overburden resulting from the vertical displacement of rocks from maximum burial depth, occurs at both regional and local scales in offshore sedimentary basins and has important implications for ... -
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, ... -
Crustal processes in volcanic systems : case studies from Northern Ireland, New Zealand, and Indonesia
(Trinity College (Dublin, Ireland). Department of Geology, 2008)It is evident that modification of primary melts from the mantle is significant in magma petrogenesis as primitive magmas are only rarely observed as erupted lavas at the Earth’s surface. Ascent and density filtering of ... -
Volcano flank terraces on Mars
(Trinity College (Dublin, Ireland). Department of Geology, 2010)Flank terraces are topographically subtle, laterally extensive structures on the flanks of several large shield volcanoes on Mars. The formation of terraces has been ascribed to several mechanisms, including elastic ... -
Deformation band fault core : character, evolution and influence on bulk fluid flow
(Trinity College (Dublin, Ireland). Department of Geology, 2006)Deformation band fault core has only recently been recognised as a distinct component of deformation band faults. Previously, deformation bands were divided into single deformation bands, zones of deformation bands and ...
