Leeds Geological Association

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FIELD VISITS 2013
 
A Report of LGA Field Events held during Summer 2013
 


FIELD PROGRAMME 2013 EXCURSION DETAILS PREVIOUS FIELD PROGRAMMES

Field Visit Reports 2013 - click to view pdf (1.24 MB)
Click to View (1.24 MB)
The 2013 Field Visit Reports booklet - containing full reports for each excursion of the 2013 field calendar - can be viewed using the link on the right. The file size is 1.24 MB and the format is pdf.

The download time using a dial-up connection will be about 2 minutes.

Please note: The field reports are personal accounts of LGA field excursions, written by a members of the LGA, recording their impressions of the event. They are intended as a summary of the geology of the area visited. The routes described may not be suitable for use by individuals and/or groups and do not necessarily follow an established path or public right of way.

Field Programme: 2013

DATE & TIME SUBJECT LEADER
20 April 2013
Saturday Morning
Millstone Grit Sandstones and Shales,
North West of Leeds
Tony Benfield
Geocourses &
BGS (retired)
11 May 2013
Saturday Daytime
Ingleton Waterfalls Walk Dr Andrew M McCaig
Leeds University
15 June 2013
Saturday Daytime
Fauld Mine and Crater, Tutbury Dr Noel Worley
Yorkshire Geological Society
14 July 2013
Sunday Morning
Bradford Building Stones Richard Butcher
West Yorkshire Geology Trust
11 August 2013
Sunday Daytime
Saltwick Bay to Whitby East, North Yorkshire Dr Liam Herringshaw
Durham University
15 Sept 2013
Sunday Daytime
Localities on Geological
Sheet 61 - Pateley Bridge
Dr Richard Haslam
Dr Oliver Wakefield
BGS
27 - 29 Sept 2013
Friday - Sunday
Residential Weekend - Northumbria Alison Tymon
(standing in for
Dr Brian Turner)

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Excursion Details
Sat 20th April 2013 — Millstone Grit Sandstones & Shales, NW of Leeds

Leader: Tony Benfield, Geocourses and BGS (retired).

Purpose:

To examine the Late Namurian Marsdenian Midgley Grit, Yeadonian Shales and the Rough Rock at localities between Bramhope and Eldwick.

Geology: Carboniferous.

Maps and references:

OS 1:50,000 Landranger - Sheet 104 Leeds & Bradford

OS 1:25,000 Explorer Sheet 297 Lower Wharfedale & Wasburn Valley

Geological 1:50,000 Sheets: 69 - Bradford and 70 - Leeds

Geology of the Country between Bradford and Skipton, Stephens JV, Mitchell GH and Wilfred Edwards 1953, Memoir of the Geological Survey of Great Britain


Saturday 11th May 2013 — Ingleton Waterfalls Walk

Leader: Dr Andrew M McCaig, Leeds University.

Purpose:

To examine the Ingleton Group, the oldest rocks in Yorkshire with flute casts and a mappable syncline axis, the unconformably overlying Carboniferous Limestone and a Terminal Moraine. We will also look at the hydrogeology, a dyke, quarrying and the Craven faults.

Geology: ?Lower Palaeozoic, Carboniferous, Quaternary.

Maps and references:

OS 1:50,000 Landranger Map - Sheet 98 - Wensleydale & Upper Wharfedale.

OS 1:25,000 Explorer Map - Sheet OL2 - Yorkshire Dales - Southern & Western Areas.

Geological 1:50,000 - Sheet 50 - Hawes.

Scruton, C & Powell, J - Yorkshire Rocks & Landscape, A Field Guide - 3rd Edition, 2006, Chapter 1.

Soper N J and Dunning F W - Structure and sequence of the Ingleton Group, basement to the central Pennines of northern England, Proceedings of the Yorkshire Geological Society Part 4 pp241-261, 2005.


Saturday 15th June 2013 — Fauld Mine and Crater, Tutbury

Leader: Dr Noel Worley, Yorkshire Geological Society.

Purpose:

Within the upper part of the Triassic Mercia Mudstone Group, now called the Branscombe Mudstone Formation, are two developments of evaporites known as the Stafford Halite Evaporite Bed and the younger Tutbury Evaporite Bed or Tutbury Bed. The latter is composed of economically viable gypsum and anhydrite.

The purpose of the excursion is to examine the Tutbury Evaporite Bed underground in shallow room and pillar workings and afterwards at outcrop in the Fauld Quarry. We will then walk to the crater before walking to the church in Hanbury to look at alabaster grave ornaments. If time permits we will then drive to the church in Tutbury to look at the oldest recorded use of carved alabaster in the British Isles in the Norman west door.

The mines were used during the Second World War for the storage of munitions by the RAF and became the site of the world’s largest non-nuclear man made explosion. The geology controlled the effects of the explosion and the remaining field evidence will be examined.

Geology: Triassic.

Maps and references:

OS 1:50,000 SK 128

Geological 1:50,000 Sheet 140, Burton on Trent, Rugby and Uttoxeter.

Anon. St Werburgh’s Church Hanbury. Hanbury Paraochial Church Council, 8p.

Howard, A, Warrington, G. Ambrose, K, Rees, J. 2008. A formational framework for the Mercia Mudstone Group (Triassic) of England and Wales. Keyworth, Nottingham, British Geological Survey, 33pp. (RR/08/004).

Jackson, M. P. A., 1988. Anatomy of Mushroom Shaped Diapirs. Journal of Structural Geology. vol. 11 no.1/2. Pp.211-230.

McCamley, N.J.2004. Disasters Underground. Barnsley: Pen & Sword Military.

Sherlock, R.L. and Hollingworth, S.E. 1938. Gypsum and Anhydrite and Celestine and Strontianite. Mem Geol Surv., Min Resources, vol iii, 3rd edit.

Stevenson, I.P., and Mitchell, G.H. 1955. Geology of the Country between Burton upon Trent Rugely and Uttoxeter. Mem. Geol. Surv. GB. 178p.

Wynne, T.T. 1907. Gypsum and its occurrence in the Dove Valley. Trans Inst Mining Eng., vol xxxii.


Sunday 14th July 2013   —   Bradford Building Stones

Leader: Richard Butcher, West Yorkshire Geology Trust.

Purpose:

To explore the building stones used in Bradford, including the excellent local sandstones and the decorative stones used on shop fronts and open spaces.

Sunday 11th August 2013   —   Saltwick Bay to Whitby East, N Yorks

Leader: Dr Liam Herringshaw, Durham University.

Purpose:

The North Yorkshire coastal section between Saltwick Bay and Whitby East provides an excellent exposure of the Lower Jurassic Whitby Mudstone Formation. At low tide, the upper part of the famous Jet Rock is exposed at Saltwick, and then the walk towards Whitby takes you up through the Bituminous Shales, Hard Shales and Alum Shales, all exposed in a gentle syncline. This succession of organic-rich Jurassic mudstones has been of industrial and scientific interest for centuries, but is attracting renewed research attention because of the shale gas revolution. Additionally, new studies are showing that many of the paradigms of shale deposition – deep water, low energy, low oxygen – may be flawed. In the light of both of these, the trip will explore this well-exposed section of the Whitby Mudstone Formation and reassess the conditions under which it formed. We will also discuss its broader applicability to our understanding of shale systems.

Geology: Jurassic.

Maps and references:

OS maps – 1:25 000 Explorer OL27 map – North York Moors Eastern area.

1: 50 000 Landranger map – Sheet 94, Whitby & Esk Dale.

Gelogical Survey map – 1:50 000 Sheet 35/44 - Whitby & Scalby.

Geologists' Association Guide no. 34 – the Yorkshire Coast. 3rd revised edition, 2000, by P. F. Rawson and J. K. Wright (we will follow much of Itinerary 2).


Sunday 15th Sept 2013 — Localities on Geological Sheet 61: Pateley Bridge

Leader: Drs Richard Haslam and Oliver Wakefield, both of the British Geological Survey.

Purpose:

This may be the final summer that BGS will be out in the field re-surveying the Pateley Bridge Sheet which was last surveyed in 1889. They have kindly agreed to show us aspects of this work.

Morning: River Wharfe with Dr Richard Haslam (BGS)

In the morning we will walk along the River Wharfe upstream from Burnsall where we will look at the limestone sequences and structures. We will start with a discussion on the landscape taking an overview of one of the Cracoe Reef Knolls and the possible continuation of the Middle Craven Fault. We will then examine the possible relationship between deposition of the limestone and the structural evolution of the area. Finally we will explore the transition between the Malham Formation and Alston Formation and the distinguishing features between these formations.

Afternoon: Brimham Rocks with Dr Oliver Wakefield (BGS)

In the afternoon at Brimham Rocks there are exposed spectacular rock pinnacles that allow a three-dimensional insight into a complex ancient fluvio-deltaic system. This part of the field trip will focus on identifying and interpreting a series of sedimentary structures and relating them to a variety of depositional bedforms. The walk is on made footpaths, no more than 1km in length.

Geology: Carboniferous, Quaternary.

Maps and references:

Localities on OS maps

Burnsall:

OS 1:50,000 Landranger - Sheet 98 Wharfedale and Upper Wensleydale.
OS 1:25,000 Explorer - Sheet 02 Yorkshire Dales Southern & Western areas.

Brimham:

OS 1:50,000 Landranger - Sheet 99 Northallerton & Ripon.
OS 1:25,000 Explorer - Sheet 298 Nidderdale.


Fri 27th Sept - Sun 29th Sept 2013    —    Residential Weekend: Northumbria

Leader: Alison Tymon (standing in for Dr Brian Turner).


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Previous Field Programmes


Field Programme for 2002

Field Programme for 2003

Field Programme for 2004

Field Programme for 2005

Field Programme for 2006

Field Programme for 2007

Field Programme for 2008

Field Programme for 2009

Field Programme for 2010

Field Programme for 2011

Field Programme for 2012

Field Programme for 2014

Field Programme for 2015

Field Programme for 2016

Current Field Programme




 
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