Detailed micropalaeontological analysis of the Eyam Borehole is presented. Dinantian strata of Upper Tournaisian to 'middle' Brigantian age have been recognized lying unconformably on top of Ordovician (?Llanvirn) basement beds (Dunham 1973). The early Tournaisian and late Brigantian beds are missin
The deep structure of Derbyshire
β Scribed by K. Smith; N. J. P. Smith; D. W. Holliday
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 830 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0072-1050
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β¦ Synopsis
Pre-Carboniferous basement beneath Derbyshire is disposed in two southwest-dipping tilt blocks (Eyam and W o o Dale Blocks), which are separated by a major north-dipping growth fault (the Bakewell Fault). The surface expression of the Bakewell Fault is largely concealed by late Dinantian carbonate shelf sediments, but its position and trend, which can be inferred from borehole and geophysical evidence, have exerted a control upon mineralization and volcanism in Derbyshire. During the Holkerian, the Bakewell Fault acted as the axis of a broad anticlinal fold or drape structure, which subsequently influenced the position of the overlying Asbian carbonate shelf. Tilt blocks are arranged symmetrically beneath the southern Pennine Basin, with north-dipping blocks, such as the Askrigg Block, at the northern margin mirrored by south-dipping blocks beneath Derbyshire in the south.
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