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Title: The sedimentology and diagenesis of selected pre-Jurassic core material, U.K. sector, northern North Sea Basin
Author: Byatt, J.
Awarding Body: University of Aberdeen
Current Institution: University of Aberdeen
Date of Award: 1980
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The pre-Jurassic sediments of the UK sector of the northern North Sea Basin have a wide geographic distribution. These sediments accumulated in widely separate basins and sub-basins in a number of depositional environments ranging from fluvial channel sands to fluvio-deltaic, ephemeral/playa and aeolian dunes. The diagenetic development of the sandstones was generally similar in that a common group of authigenic cements were present, including quartz, feldspar, dolomite, calcite and authigenic clays such as illite, illite/smectite, kaolinite and chlorite. The paragenetic sequence of the authigenic mineralogy was generally unique in each core sequence indicating a relatively local control of pore fluid chemistry with no basin wide control being apparent. The prime recognisable controls upon the diagenetic development of the sands were depositional environment and palaeo tectonic history, sediment composition being of lesser importance due to its maturity. Preserved porosity and permeability values were generally good. Porosity occurring as both primary and secondary with dissolution of authigenic carbonate cements. The influence of primary sediment characteristics, mainly controlled by the depositional environment, upon porosity values was present in many wells.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available