Aspects of dinantian sedimentation in the edale basin, north derbyshire

Abstract

The Dinantian Edale Basin is located to the north of the Derbyshire carbonate platform and underlies the Upper Carboniferous of the central Pennines. The Edale Basin was thought to be part of a large basin which extended from the Derbyshire carbonate platform to the Askrigg Block. The presence of aggregate grains and ooids in the Alport Borehole suggests that a carbonate platform, possibly located on the Holme structural high, was present underneath the central Pennines. This platform is called the Holme Platform.The Arundian to early Asbian section of the Alport Borehole represents deposition of resedimented shallow-water carbonates with occasional bioturbated periplatform carbonates and basinal shales on the middle part of a carbonate ramp. Volcaniclastic sediments may have been derived from a volcanic centre within the Edale Basin.A change in sedimentation during the mid-Asbian to the deposition of basinal shales and distal carbonate turbidites is attributed to starvation of the basin. This may have been caused by a combination of the development of accretionary rimmed carbonate shelves and the repeated emergence of shelf carbonates deposited on surrounding carbonate platforms. The late Asbianiearly Brigantian section of the Edale Borehole is interpreted as a distal equivalent of the 'Beach Beds' which outcrop at the north margin of the Derbyshire carbonate platform. The 'Beach Beds' represent bioclastic turbidites derived from the Derbyshire carbonate platform.Throughout the Brigantian, sedimentation in the Edale Basin was dominated by the deposition of distal carbonate turbidites and basinal shales. Variation of dip through the Alport Borehole indicates the common occurrence of slumps throughout the sequence and the presence of either an angular unconformity or a fault within the early Brigantian section.

Unravelling evidence for global climate change in Mississippian carbonate strata from the Derbyshire and North Wales Platforms, UK

“…The dip angle of beds and the geopetal textures within slope facies from the northern margin of the Derbyshire Platform indicate a palaeo-dip on the platform slope of 30°. This is consistent with previous interpretations (Broadhurst and Simpson, 1967;Simpson and Broadhurst, 1969;Broadhurst and Simpson, 1973;Gutteridge, 1991;Harwood, 2005), but is shown here to have resulted from stabilisation of the remobilised debris, as well as microbial boundstones (Harwood, 2005), by syn-depositional radiaxial fibrous calcite cementation. These cements precipitate as a result of wave and storm-facilitated seawater flux (Kirkby, 1987;Kenter 1990;Della Porta et al, 2003;Bahamonde et al, 2004;van der Kooij et al, 2010).…”

“…The Derbyshire Platform has previously been described as rimmed (e.g. Smith et al, 1985;Gutteridge, 1991) but the dispersed distribution of mounds and shoals suggests that build-ups were less laterally continuous than previously assumed. The depths at which mounds grew is also unclear; Harwood (2005) suggested water depths of 10 to 20 metres.…”

Controls on dolomitization in extensional basins: An example from the Derbyshire Platform, U.K.

“…The Viséan succession of the Derbyshire Platform displays a complex but well-constrained diagenetic history (Gutteridge 1987(Gutteridge , 1991Walkden and Williams 1991;Hollis 1998;Hollis and Walkden 2002). Four principal phases, or zones, of calcite cementation (Zones 1-4, as defined by Walkden and Williams 1991) were described from carbonate matrix porosity (Zones 1-4) and fractures (Zone 3-4) (Walkden and Williams 1991;Hollis and Walkden 2002).…”

The control of basin evolution on patterns of sedimentation and diagenesis: an example from the Mississippian Great Orme, North Wales

“…Walkden & Williams 1991;Fraser & Gawthorpe 2003;Hollis & Walkden 2012, and references therein). Gutteridge (1987Gutteridge ( , 1991, Walkden & Williams (1991), Hollis (1998) and Hollis & Walkden (2002) have published a comprehensive and well-constrained paragenesis for the Derbyshire Platform, with some comparative work on the southern margin of the Askrigg Platform (Hollis & Walkden 2012) and the Lake District (Horbury & Adams 1989). Complementary studies focusing on the mineralization of northern England and Wales were carried out by Pattrick & Russell (1989) and Ixer & Vaughan (1993).…”