Revision of the Dinantian stratigraphy of the Craven Basin, N England

Fewtrell, M. D.; Smith, David G.

doi:10.1017/s0016756800033082

Cited by 14 publications

(4 citation statements)

References 23 publications

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“…The Skelterton Limestone of Booker & Hudson (1926) was considered by Black (1958) as an Asbian basinal succession developed south of the reefs. This would now be interpreted as the Pendleside Limestone Formation, in agreement with Fewtrell & Smith (1980;Fig. 2), although these authors also included the reef facies within the ostensibly basinal succession. Mundy (1980Mundy ( , 2000 identified and mapped out the extent of two pre-reefal limestone units, the Rylstone and Threapland limestones of Arundian age and the Skelterton Limestone of Holkerian age (Table 1).…”

Section: The Younger Cracoean Apron Reefs Form What Is Commonly Refersupporting

confidence: 55%

Mississippian reef development in the Cracoe Limestone Formation of the southern Askrigg Block, North Yorkshire, UK

Waters

Haslam

Cózar

et al. 2017

PYGS

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Section: The Younger Cracoean Apron Reefs Form What Is Commonly Refersupporting

confidence: 55%

Mississippian reef development in the Cracoe Limestone Formation of the southern Askrigg Block, North Yorkshire, UK

Waters

Haslam

Cózar

et al. 2017

PYGS

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“…In recent years, however, the sedimentology of the basin has been studied by Miller & Grayson (1972, who considered the environmental interpretation of the Chadian Waulsortian buildups, and by Charsley (1984), who described the sequence present in the Swinden borehole. Fewtrell (1979) analysed the distribution of grain types from the succession in the Skipton area, and brief descriptions of the depositional environments of the Dinantian sequence are presented in Fewtrell & Smith (1980), who also presented a formal lithostrati- to the Pendleside Limestone (Asbian/ Brigantian). Also shown are the areas of 'shallow-water' carbonate deposition situated on topographic highs defining the Asbian basin margins, and the locations of the logs of Fig.…”

Section: Geological a N D S T R A T I G R A P H I C S E T T I N Gmentioning

confidence: 99%

Sedimentation during carbonate ramp‐to‐slope evolution in a tectonically active area: Bowland Basin (Dinantian), northern England

Gawthorpe¹

1986

Sedimentology

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The Bowland Basin (northern England) contains a series of carbonates and terrigenous mudstones deposited during the Ivorian to early Brigantian. Two regional depositional environments are indicated by facies and facies associations. Wackestone/packstone and calcarenite facies indicate deposition in a carbonate ramp environment, while lime mudstone/wackestone, calcarenite and limestone breccia/conglomerate facies, often extensively slumped, represent a carbonate slope environment. Stratigraphic relations suggest that the depositional environment evolved from a ramp into a slope through the Dinantian. Two main sediment sources are indicated by the sequence; an extra‐basinal terrigenous mud source and a supply of carbonate from the margins of the basin. Deposition from suspension and from sediment gravity flows, in situ production and remobilization of sediment during sedimentary sliding were important processes operating within the basin. Periods of enhanced tectonic activity in the late Chadian to early Arundian and late Asbian to early Brigantian are indicated by basin‐wide horizons of sedimentary slide and mass flow deposits. Both intervals were marked by a decline in carbonate production resulting from inundation and uplift/emergence. The first of these intervals separates deposition on a seafloor with gentle topography (carbonate ramp) from a situation where major lateral thickness and facies variations were present and deposition took place in a carbonate slope environment. The second interval marks the end of major carbonate deposition within the Bowland Basin and the onset of regional terrigenous sedimentation.

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“…2) are of Asbian to Brigantian age and span the interval during which there was a transition from predominantly carbonate to terrigenous sedimentation. These horizons lie at the base of and within the Bowland Shales, a sequence up to 400m thick (Fewtrell &Smith, 1980) composed mainly of terrigenous mudstones. The Pendleside Limestone was deposited in a carbonate slope environment.…”

Section: Geological S E T T I N Gmentioning

confidence: 99%

Burial dolomitization and porosity development in a mixed carbonate‐clastic sequence: an example from the Bowland Basin, northern England

Gawthorpe

1987

Sedimentology

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Widespread dolomitization and leaching occur in the Asbian to Brigantian (Dinantian) sequence of the Bowland Basin. Within this mudrock‐dominated succession, dolomite is developed in calcarenites and limestone breccia/conglomerates deposited in a carbonate slope environment (Pendleside Limestone) and also within graded quartz wackes deposited by density currents in a generally ‘starved’ basin environment (Pendleside Sandstone). The dolomitized intervals range in thickness from less than one metre to several tens of metres and have a stratabound nature. All stages of calcite cement pre‐date dolomitization and calcite veins are dolomitized. Dolomite crystals replace neomorphic spar and may also contain insoluble residues that were concentrated along stylolites. Thus dolomitization was a late stage process within the carbonate diagenetic sequence. A late‐stage diagenetic origin is also indicated within the sandstones, with dolomite post‐dating the development of quartz overgrowths. Six main textural styles of dolomite are observed: (1) scattered; (2) mosaic; (3) subhedral to euhedral rhombic; (4) microcrystalline; (5) single crystal and (6) saddle. The style of dolomite developed is dependent on the host rock mineralogy, on whether it is space‐filling or replacive and also on temperature. Chemically the dolomite varies from near stoichiometric compositions to ankeritic varieties containing up to 20 mole % FeCO3. Generally the dolomites have isotopic compositions depleted in δ18O compared to the host limestone, with similar or lighter δ13C values. Initial dolomite was of the scattered type, but with progressive replacement of the host a mosaic dolostone with a sucrosic texture was produced. There was a general increase in the Fe and Mn content and reduction in δ18O ratio of the crystals during dolomitization. Leaching is restricted to partly dolomitized horizons, where calcite, feldspars, micas, clays and, to some extent, dolomite have been leached. This has produced biomouldic and vuggy secondary porosity within the carbonates, whereas in the sandstones honeycombed, corroded and floating grains associated with oversized pores occur. Porosity within both carbonates and sandstones is reduced by ferroan dolomite/ankerite cements. Field, petrographic and chemical characteristics indicate that dolomitizing solutions were predominantly derived from the enclosing mudrocks (Bowland Shales) during intermediate/deep burial. Fluid migration out of the mudrocks would have been sided by dehydration reactions and overpressure, the fluids migrating along the most permeable horizons—the coarse grained carbonates and sandstones that are now dolomitized and contain secondary porosity.

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Revision of the Dinantian stratigraphy of the Craven Basin, N England

Cited by 14 publications

References 23 publications

Mississippian reef development in the Cracoe Limestone Formation of the southern Askrigg Block, North Yorkshire, UK

Mississippian reef development in the Cracoe Limestone Formation of the southern Askrigg Block, North Yorkshire, UK

Sedimentation during carbonate ramp‐to‐slope evolution in a tectonically active area: Bowland Basin (Dinantian), northern England

Burial dolomitization and porosity development in a mixed carbonate‐clastic sequence: an example from the Bowland Basin, northern England

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