ICFS 10 - Field Trips - Mid-Conference

Mid-Conference Field Trips

All mid-conference field trips are included within the cost of registration. Space is limited and offered on a first-come first-served basis. It may be possible to accommodate a limited number of guests. Please contact the conference organisers to enquire about this possibility.

Coal-bearing fluvio-lacustrine deposits of the Westphalian (Pennsylvanian) of the east Pennines

Leader: Sian Davies-Vollum and Paul Guion

Length: all-day

This trip will focus on Pennsylvanian fluvial channel sandbodies of Duckmantian and Bolsovian age that outcrop in the Barnsley-Dewsbury area. Four channel sandbodies will be examined: the Mexborough, Glass Houghton, Woolley Edge and Thornhill Rocks. The sandbodies are multistorey/stacked and exhibit various geometries and internal architectural elements reflecting the different channel processes active at this time. These sandbodies are of economic importance, forming minor hydrocarbon reservoirs in the subsurface to the east and provide analogues for hydrocarbon reservoirs in the Southern North Sea. Mineable coal and mudrock often underlies these sandbodies but these are not exposed at most localities. However, we will examine late Langsettian Coals and inter-seam strata at the National Coal Mining Museum, both in surface outcrop and in the drift at the former Caphouse Colliery (now part of the museum). The section in the mine spans multiple coal seams, which were worked up until the 1980s. The seams were deposited in laterally extensive mires associated within the overall fluvio-lacustrine environment.

Rough Rock: a multi-storey, delta top, sheet sandstone within the Carboniferous Millstone Grit

Leader: Charlie Bristow

Length: all-day

The Rough Rock is a multi-storey, delta top, sheet sandstone which outcrops in northern England between Leeds, Manchester and Derby. It is the last of the great Millstone Grit deltas that filled the Pennine Basin during the Carboniferous. As such it is the most widespread and has the most uniform thickness of the Millstone Grits forming a multi-storey sheet sandstone approximately 15m thick, maximum 60m, outcropping over an area of 1000km2. The Rough Rock is a very coarse grained, sometimes granule grade, sandstone with occasional pebbles. It has an erosive base, is predominantly cross-stratified with a palaeocurrent vector mean of 218 indicating palaeoflow from NE to SW although this varies locally. It is interpreted as a braided river sheet sandstone featuring a range of macroforms and superimposed dunes (Bristow 1993).

Bristow, C.S., 1993. Sedimentology of the Rough Rock: a Carboniferous braided river sheet sandstone in northern England. In Best, J.L., and Bristow, C.S., (Eds.) Braided Rivers, Geological Society Special Publication 75, p.291-304.

Fluvial channel and barform architecture in the Carboniferous Brimham Grit, North Yorkshire, England

Leaders: Roman Soltan and Nigel Mountney

Length: all-day

Millstone Grit outcrops of pebbly, subarkose sandstone form a complex array of tor outcrops at Brimham Rocks, Summerbridge, North Yorkshire, UK. The succession forms part of the First (Lower) Brimham Grit, a succession of fluvio-deltaic origin within the N7 mesothem (Kinderscoutian Regional Stage; ~316.5 Ma). Throughout the Kinderscoutian, the palaeoenvironment represented by the First Brimham Grit was supplied with sediment delivered from a range of provenances, predominantly eroded remnants of the Caledonian Mountains that lay to the north and northeast. The system represents a shelf-edge delta plain that ultimately delivered sediment to a series of submarine fans developing in distal, deep-water parts of the Craven Basin. The complex array and three-dimensional nature of the outcropping gritstone tors generate features suited to high-resolution architectural analysis. Various arguments have been put forward regarding the formation of the gritstone tors, including atmospheric and deep chemical weathering, periglacial activity and marine wave action. Sedimentological data consisting of 1D sedimentary logs, 2D architectural panels, pseudo-3D fence diagrams, and palaeocurrent rose diagrams are used to demonstrate the detailed depositional palaeoenvironment responsible for generating the preserved stratigraphic architecture. Sedimentary lithofacies present include simple trough- and planar cross-bedded sets, compound cosets of cross-strata, low-angle-inclined ripple-laminated sandstones, planar-bedded sandstones, gravel sheets and rare thin siltstone beds. Individual lithofacies are arranged into common associations defining a variety of architectural elements including single-storey, multilateral- and multi-storey channel elements, downstream- and laterally-accreting macroforms and gravel sheet-like bodies, which collectively are indicative of accumulation in a poorly-confined network of fluvial channels developed between major sandy barforms. The overall succession represents the preserved product of an upper-delta plain system that was traversed by a dynamic, frequently avulsing, braided fluvial system in a low-accommodation setting.

Sorby Environmental Fluid Dynamics Laboratory at University of Leeds: visit and demonstration

Leader: Gareth Keevil

Length: 2-hours

The laboratory supports research into the fluid dynamics and sedimentary processes of both natural environments and industrial processes. The aim of the laboratory is to undertake ground-breaking research across a wide range of problems within Environmental Fluid Dynamics. It also welcomes researchers from across the University of Leeds, the United Kingdom, and internationally to the facilities and its collected expertise. We welcome you to visit the SEFDL during ICFS10, and will be conducting laboratory tours and demonstrations of experiments for delegates that are centred around our current and former research projects.

A medieval city: an afternoon trip to York

Length: 5-hours

For those wanting to escape the conference and relax we are providing a visit to the nearby City of York. York is a medieval walled city, situated at the confluence of the Rivers Ouse and Foss in Yorkshire, England. The city has a rich heritage and has provided the backdrop to major political events in England and the UK throughout much of its two millennia of existence. As such the city offers a wealth of historic attractions, of which the city walls and York Minster are the most prominent. We will provide a coach to and from the conference centre and York, and city maps to guide your visit.

A historical guided walking tour of Leeds city centre

Length: 2-hours

For those wanting only a short break during the Wednesday we will provide a guided walking tour of Leeds city centre. These walking tours will explore points of interest and landmarks in one of the UK's most historic cities. This walk begin at Millennium Square in the city centre and will take in all the historic and sites of interest.