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Title: Global sea level control on sedimentation during the Carboniferous across the British Isles
Author: Dale, Rachael Elizabeth
ISNI:       0000 0004 2718 0574
Awarding Body: University of Leeds
Current Institution: University of Leeds
Date of Award: 2011
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This study is the first regional synthesis and sequence stratigraphic interpretation of the Namurian (Serpukhovian to Bashkirian) successions across northern England and County Clare, Ireland. The study area includes the Central Pennine Basin and North Staffordshire Basin of northern England and the Shannon Basin, County Clare, Ireland. The aims of this thesis are to evaluate fourth and third order hierarchies of sea level change during the Carboniferous, through the development of a sequence stratigraphic framework. The collation of field data, core and public domain literature, interpretation of facies and parasequence stacking patterns have been used to identify placement of I key sequence stratigraphic surfaces and systems tracts. From these interpretations, recognition of fourth-order sequences have been defined, whose own organisation allows a third-order stacking to be defined. Correlation of outcrop sections and sub- surface data across the study area are well constrained by a rigid biostratigraphic framework, defined by goniatite bearing marine bands, which separate each phase of delta progradation. This study has identified several key characteristics defining third order stacking patterns from fourth order sequences. Sand-prone sequences containing multiple internal incisions are recognised and interpreted to correlate with third order low stand development. Mud prone sequences are also recognised as lacking in sand, making sequence boundary recognition difficult. These have been interpreted to represent third order transgressive systems tract development. Thin sequences which comprise of abundant marine fauna record the development of a third order highstand systems tract, although little preservation of this may be recorded due to removal from succeeding lowstand systems tract. In total five third order sequences have been identified in this study. Regionally comparable patterns in sedimentations have been recognised suggesting that global sea level change was one controlling factor.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available