Geology: Recent submissions
Now showing items 141-160 of 315
-
Organic synthesis on Mars by electrochemical reduction of CO2
(American Association for the Advancement of Science, 2018)The sources and nature of organic carbon on Mars have been a subject of intense research. Steele et al. (2012) showed that 10 martian meteorites contain macromolecular carbon phases contained within pyroxene- and olivine-hosted ... -
Salinity-Dependent Adhesion Response Properties of Aluminosilicate (K-Feldspar) Surfaces
(2017)Flooding sandstone oil reservoirs with low salinity water can lead to a significant increase in oil recovery, a phenomenon called “the low salinity effect”. Although there are many factors that contribute to this response, ... -
Reaction pathways and textural aspects of the replacement of anhydrite by calcite at 25 °C
(2017)The replacement of sulfate minerals by calcium carbonate polymorphs (carbonation) has important implications in various geological processes occurring in Earth surface environments. In this paper we report the results of ... -
Continuous magma mixing and cumulate separation in the High Tatra Mountains open system granitoid intrusion, Western Carpathians (Poland/Slovakia): a textural and geochemical study
(2019)In this study the formation of the polygenetic High Tatra granitoid magma is discussed. Felsic and mafic magma mixing and mingling processes occurred in all magma batches composing the pluton, but were developed to different ... -
Rapid radon potential classification using soil-gas radon measurements in the Cooley Peninsula, County Louth, Ireland
(2019)A rapid method for local-scale radon risk assessment using in situ radon soil-gas measurements and a national-scale soil permeability data set have been evaluated. We test and validate our approach in a case study on the ... -
A U-Pb age for the Late Caledonian Sperrin Mountains minor intrusions suite in the north of Ireland: timing of slab break-off in the Grampian terrane and the significance of deep-seated, crustal lineaments
(2013)An intrusion of trachy-andesite, representative of a newly discovered suite of high-K–Ba–Sr, calc-alkaline minor intrusions (termed herein the Sperrin Mountains suite), hosted within the Grampian terrane in the north of ... -
Seismic structure and anisotrophy in southern Africa's lithosphere : constraints from broad-band surface-wave dispersion
(Trinity College (Dublin, Ireland). Department of Geology, 2013)Southern Africa contains some of the oldest crust on Earth, with the Archean Kaapvaal Craton bordered to the North by the Archean-Paleoproterozoic Limpopo belt. To understand the mechanisms of deformation of the Archean ... -
Oxidative mafic rock weathering through geological time
(Trinity College (Dublin, Ireland). Department of Geology, 2015)Oxidative chemical weathering requires the presence of free oxygen in the Earth's atmosphere. Reconstructing the terrestrial oxidation history in the ancient rock record has helped to detect the intrinsic links between ... -
Radon Potential as a diagnostic tool for indoor radon hazard mapping
(2019)At over 56% of the annual effective dose, radon is the primary source of ionizing radiation exposure received by the Irish population. Although the average indoor radon concentration in Ireland has been reduced since ... -
Petrology and dating of the Permian lamprophyres from the Malá Fatra Mts. (Western Carpathians, Slovakia)
(2018)Calc-alkaline lamprophyres are known from several localities in the Malá Fatra Mountains. They form dykes (0.5-3 m) of varying degree of alteration that have intruded the surrounding granitoid rocks which are often ... -
Development and optimisation of a multi-residue method for the determination of 40 anthelmintic drugs in environmental water samples by solid phase extraction (SPE) with LC-MS/MS detection
(MDPI, 2019-05-22)A comprehensive multiresidue method was developed and validated for the determination of 40 anthelmintic compounds, including 13 transformation products, in surface and groundwater samples at sub nanogram per litre (ng ... -
Fingerprinting isotopic signatures for metal enrichment in European trees: Developing vectors for mineral exploration
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2019)The trace-element geochemistry of native and common plant species in Ireland including ash, beech, blackberry, hawthorn, oak, poplar and sycamore was systematically determined above the Navan Zn-Pb deposit, currently mined ... -
Crystal structure of dicalcium sodium monohydrogen diarsenate hexahydrate, Ca2Na[HAsO4][AsO4] · 6H2O
(De Gruyter, 2006)As2Ca2H13NaO14, triclinic, P1 (no. 2), a = 6.680(5) Å, b = 8.223(4) Å, c = 12.537(3) Å, = 73.46(5)°, = 78.89(4)°, = 87.47(5)°, V = 647.7 Å3 , Z = 2, Rgt(F) = 0.062, wRref(F2 ) = 0.197, T = 293 K. Source of ... -
Furthering the potential of apatite as a provenance indicator in sedimentary systems
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2019)As a mineral that has only recently become possible to date routinely by the U-Pb method, apatite geochemistry (U-Pb isotopes and trace elements) has until now attracted less attention than longer-established detrital ... -
Determination of Percentage Total Sulphur in Pyritic Building Aggregate using Inductively Coupled Plasma-Optical Emission Spectrometry, X-Ray Fluorescence and X-Ray Diffraction
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2019)Pyritic heave in subfloor aggregates is caused by the oxidation of pyrite, which produces sulphuric acid that reacts with calcite to form gypsum. The construction materials standard (I.S. 398-1:2013) specifies analyses of ... -
Palynostratigraphy and palynofacies analysis of upper Devonian and Mississippian strata of Eastern U.S.A.
(Trinity College (Dublin, Ireland). Department of Geology, 2009)Well preserved and taxonomically diverse miospore assemblages have been recovered from the uppermost Devonian and lower Mississippian strata of the Appalachian Basin, Eastern USA. Rock samples were collected from 13 ... -
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 ... -
Elemental and isotope fingerprint of metal deficiency in soils
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2018)Metal deficiency in soils is a frequently observed phenomenon in (sub)-tropical regions, and both natural and anthropogenic processes contribute to the depletion of soil reservoirs. Advanced chemical weathering, in old ... -
Peat bogs as archives of atmospheric metal pollution from natural and anthropogenic sources - A case study from Ireland
(Trinity College Dublin. School of Natural Sciences. Discipline of Geology, 2018)This research project combines various geochemical techniques to identify and characterise historic and recent sources of atmospheric metal pollution recorded in ombrotrophic peat bogs across Ireland. In a first subproject, ...
