Evolution and crustal contamination of igneous rocks from the Palaeocene volcanic district of North-West Scotland
This study was undertaken using a multidisciplinary approach employing detailed field mapping and geochemical sampling of rocks from the Isle of Rum, Ardnamurchan, Isle of Mull and the Isle of Eigg in North West Scotland. Field investigations were followed up by strontium, neodymium and lead isotope...
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Trinity College (Dublin, Ireland). Department of Geology
2009
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fttrinitycoll:oai:www.tara.tcd.ie:2262/78127 2024-09-15T18:24:03+00:00 Evolution and crustal contamination of igneous rocks from the Palaeocene volcanic district of North-West Scotland Nicoll, Graeme Troll, Valentin 2009 1 volume pp 395 application/pdf http://hdl.handle.net/2262/78127 en eng Trinity College (Dublin, Ireland). Department of Geology http://stella.catalogue.tcd.ie/iii/encore/record/C__Rb14033805 Graeme Nicoll, 'Evolution and crustal contamination of igneous rocks from the Palaeocene volcanic district of North-West Scotland', [thesis], Trinity College (Dublin, Ireland). Department of Geology, 2009, pp 395 THESIS 8770 http://hdl.handle.net/2262/78127 openAccess Geology Ph.D Ph.D. Trinity College Dublin thesis thesis_dissertations refereed_publications Doctoral Doctor of Philosophy (Ph.D.) 2009 fttrinitycoll 2024-08-15T04:52:31Z This study was undertaken using a multidisciplinary approach employing detailed field mapping and geochemical sampling of rocks from the Isle of Rum, Ardnamurchan, Isle of Mull and the Isle of Eigg in North West Scotland. Field investigations were followed up by strontium, neodymium and lead isotope determination, complimented with major, trace and rare earth elements, for a host of igneous rock compositions ranging from basaltic to rhyolitic as well as metamorphic basement rocks. This study was undertaken in order to better understand: (i) the generation of voluminous felsic magmas, (ii) the underlying crustal structure of this part of Scotland and (iii) the temporal evolution of these large igneous centres forming on the thinned and stretched pre-rift North Atlantic Margin. Detailed new field investigations carried out on the Isle of Rum further delineate the numerous felsic igneous rocks at this centre. Rhyodacite ignimbrites are mapped out and correlations across the island are suggested. In addition, these sequences appear linked to a large vent structure discovered in the south of the island. The significance of mafic xenoliths and inclusions entrained within the Am Mam-type intrusion breccias must be considered in order to fully understand the magmatic evolution of the Rum Centre. These xenoliths characterize the earliest mafic magmas which led to large-scale crustal anatexis. The Am Mam breccia is important as it represents a rare example within the British-Irish Palaeocene Igneous Province of a lithic-rich intermediate product of intruding mafic magmas and crustal partial melts. TARA (Trinity’s Access to Research Archive) has a robust takedown policy. Please contact us if you have any concerns: rssadmin@tcd.ie Doctoral or Postdoctoral Thesis North Atlantic The University of Dublin, Trinity College: TARA (Trinity's Access to Research Archive) |
institution |
Open Polar |
collection |
The University of Dublin, Trinity College: TARA (Trinity's Access to Research Archive) |
op_collection_id |
fttrinitycoll |
language |
English |
topic |
Geology Ph.D Ph.D. Trinity College Dublin |
spellingShingle |
Geology Ph.D Ph.D. Trinity College Dublin Nicoll, Graeme Evolution and crustal contamination of igneous rocks from the Palaeocene volcanic district of North-West Scotland |
topic_facet |
Geology Ph.D Ph.D. Trinity College Dublin |
description |
This study was undertaken using a multidisciplinary approach employing detailed field mapping and geochemical sampling of rocks from the Isle of Rum, Ardnamurchan, Isle of Mull and the Isle of Eigg in North West Scotland. Field investigations were followed up by strontium, neodymium and lead isotope determination, complimented with major, trace and rare earth elements, for a host of igneous rock compositions ranging from basaltic to rhyolitic as well as metamorphic basement rocks. This study was undertaken in order to better understand: (i) the generation of voluminous felsic magmas, (ii) the underlying crustal structure of this part of Scotland and (iii) the temporal evolution of these large igneous centres forming on the thinned and stretched pre-rift North Atlantic Margin. Detailed new field investigations carried out on the Isle of Rum further delineate the numerous felsic igneous rocks at this centre. Rhyodacite ignimbrites are mapped out and correlations across the island are suggested. In addition, these sequences appear linked to a large vent structure discovered in the south of the island. The significance of mafic xenoliths and inclusions entrained within the Am Mam-type intrusion breccias must be considered in order to fully understand the magmatic evolution of the Rum Centre. These xenoliths characterize the earliest mafic magmas which led to large-scale crustal anatexis. The Am Mam breccia is important as it represents a rare example within the British-Irish Palaeocene Igneous Province of a lithic-rich intermediate product of intruding mafic magmas and crustal partial melts. TARA (Trinity’s Access to Research Archive) has a robust takedown policy. Please contact us if you have any concerns: rssadmin@tcd.ie |
author2 |
Troll, Valentin |
format |
Doctoral or Postdoctoral Thesis |
author |
Nicoll, Graeme |
author_facet |
Nicoll, Graeme |
author_sort |
Nicoll, Graeme |
title |
Evolution and crustal contamination of igneous rocks from the Palaeocene volcanic district of North-West Scotland |
title_short |
Evolution and crustal contamination of igneous rocks from the Palaeocene volcanic district of North-West Scotland |
title_full |
Evolution and crustal contamination of igneous rocks from the Palaeocene volcanic district of North-West Scotland |
title_fullStr |
Evolution and crustal contamination of igneous rocks from the Palaeocene volcanic district of North-West Scotland |
title_full_unstemmed |
Evolution and crustal contamination of igneous rocks from the Palaeocene volcanic district of North-West Scotland |
title_sort |
evolution and crustal contamination of igneous rocks from the palaeocene volcanic district of north-west scotland |
publisher |
Trinity College (Dublin, Ireland). Department of Geology |
publishDate |
2009 |
url |
http://hdl.handle.net/2262/78127 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://stella.catalogue.tcd.ie/iii/encore/record/C__Rb14033805 Graeme Nicoll, 'Evolution and crustal contamination of igneous rocks from the Palaeocene volcanic district of North-West Scotland', [thesis], Trinity College (Dublin, Ireland). Department of Geology, 2009, pp 395 THESIS 8770 http://hdl.handle.net/2262/78127 |
op_rights |
openAccess |
_version_ |
1810464343382294528 |