Stratigraphical Control of Mineralisation in the Peak District of Derbyshire
The published articles between p. 240 and p. 241 have been removed from the electronic copy of this thesis due to third party copyright restrictions. These can be viewed in the print copy available at the David Wilson Library. The Pb - Zn - Ba - F deposits of the Southern Pennine Orefield comprise s...
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ftleicester:oai:lra.le.ac.uk:2381/8668 2023-05-15T17:34:59+02:00 Stratigraphical Control of Mineralisation in the Peak District of Derbyshire Worley, Noel Edward 2010-10-26T09:24:49Z http://hdl.handle.net/2381/8668 en eng University of Leicester http://hdl.handle.net/2381/8668 Thesis Doctoral PhD 2010 ftleicester 2019-03-22T20:14:20Z The published articles between p. 240 and p. 241 have been removed from the electronic copy of this thesis due to third party copyright restrictions. These can be viewed in the print copy available at the David Wilson Library. The Pb - Zn - Ba - F deposits of the Southern Pennine Orefield comprise stratabound rakes, pipes, and flats which are developed exclusively in Lower Carboniferous (Dinantian) Limestones and dolomites lying on a basement of Lower Palaeozoic rocks. The distribution of these deposits is largely controlled by the occurrence of favourable lithofacies, located on structural highs, in the uppermost (Brigantian stage) shelf limestones. These include pseudobreccias, shell beds, reefs, stylolitically-bedded limestones, erosion surfaces, and coarse crinoidal biosparrudites. A number of other lithologies acted as aquicludes and include lavas, tuffs, clay wayboards, shale, and chert beds. A review of studies of paragenesis, fluid inclusions, and isotopes has shown the mineralisation probably originated by deep circulation of connate Dinantian waters which leached base metals, barium, and fluorine, from a variety of crustal rocks. Deep seated sources provided sulphur in some of the sulphide minerals whose origin was related to crustal rifting in the area during the opening of the North Atlantic and the formation of the North Sea Basin. The mineral solutions were acidic and produced a system of integrated hydrothermal karst cavities known as pipes. Precipitation of the minerals occurred by an increase in pH, cooling, and decrease in pressure. Many of the pipes continued through the Tertiary and Pleistocene to act as water courses, where alluvial placer deposits of galena, fluorite, and baryte accumulated. Doctoral or Postdoctoral Thesis North Atlantic University of Leicester: Leicester Research Archive (LRA) |
institution |
Open Polar |
collection |
University of Leicester: Leicester Research Archive (LRA) |
op_collection_id |
ftleicester |
language |
English |
description |
The published articles between p. 240 and p. 241 have been removed from the electronic copy of this thesis due to third party copyright restrictions. These can be viewed in the print copy available at the David Wilson Library. The Pb - Zn - Ba - F deposits of the Southern Pennine Orefield comprise stratabound rakes, pipes, and flats which are developed exclusively in Lower Carboniferous (Dinantian) Limestones and dolomites lying on a basement of Lower Palaeozoic rocks. The distribution of these deposits is largely controlled by the occurrence of favourable lithofacies, located on structural highs, in the uppermost (Brigantian stage) shelf limestones. These include pseudobreccias, shell beds, reefs, stylolitically-bedded limestones, erosion surfaces, and coarse crinoidal biosparrudites. A number of other lithologies acted as aquicludes and include lavas, tuffs, clay wayboards, shale, and chert beds. A review of studies of paragenesis, fluid inclusions, and isotopes has shown the mineralisation probably originated by deep circulation of connate Dinantian waters which leached base metals, barium, and fluorine, from a variety of crustal rocks. Deep seated sources provided sulphur in some of the sulphide minerals whose origin was related to crustal rifting in the area during the opening of the North Atlantic and the formation of the North Sea Basin. The mineral solutions were acidic and produced a system of integrated hydrothermal karst cavities known as pipes. Precipitation of the minerals occurred by an increase in pH, cooling, and decrease in pressure. Many of the pipes continued through the Tertiary and Pleistocene to act as water courses, where alluvial placer deposits of galena, fluorite, and baryte accumulated. |
format |
Doctoral or Postdoctoral Thesis |
author |
Worley, Noel Edward |
spellingShingle |
Worley, Noel Edward Stratigraphical Control of Mineralisation in the Peak District of Derbyshire |
author_facet |
Worley, Noel Edward |
author_sort |
Worley, Noel Edward |
title |
Stratigraphical Control of Mineralisation in the Peak District of Derbyshire |
title_short |
Stratigraphical Control of Mineralisation in the Peak District of Derbyshire |
title_full |
Stratigraphical Control of Mineralisation in the Peak District of Derbyshire |
title_fullStr |
Stratigraphical Control of Mineralisation in the Peak District of Derbyshire |
title_full_unstemmed |
Stratigraphical Control of Mineralisation in the Peak District of Derbyshire |
title_sort |
stratigraphical control of mineralisation in the peak district of derbyshire |
publisher |
University of Leicester |
publishDate |
2010 |
url |
http://hdl.handle.net/2381/8668 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://hdl.handle.net/2381/8668 |
_version_ |
1766133986714714112 |