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Title: The geology of Eastern Murrisk, Co. Mayo, Eire
Author: McManus, John
Awarding Body: Imperial College London
Current Institution: Imperial College London
Date of Award: 1963
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The stratigraphy of the Ordovician and Silurian rocks of Eastern Murrisk, Co. Mayo, Eire, is described and the facies changes in relation to the rocks of neighbouring areas interpreted, During Ordovician times the South Mayo trough, initially deep, became steadily infilled with sediments, principally derived from the rising Connemara Cordillera to the south-east. These sediments are described, and variation in the principal constituents analysed. The Silurian rocks of shelf facies occurring in the Croagh Patrick Syncline are described, and the effect of two phases of post-Wenlockian deformation and the resultant structures discussed. Two phases of injection have been recognised in the serpentine intrusi671 along the Highland Boundary Fault, the latter being post-Wenlockian. Pre-Carboniferous peneplanation was followed by submergence and deposition of shallow water sediments during the Lower Carboniferous. Tertiary faulting led to a renewal of movement along older faults, and produced fault blocks which control the present day topography. The whole area was subsequently modified during the Pleistocene glaciation.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available