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"Geology in the West Country" - 5 new articles

  1. Congratulations to geologists at Wells Cathedral School
  2. 11th & 12th July - Two independent field courses - South Malverns & Jurassic of Cotswolds
  3. 19th May - Near Surface Geophysics
  4. June - William Smith lecture and field trip / July - field trip
  5. May 7th - Numerical modelling of sedimentary systems
  6. More Recent Articles
  7. Search Geology in the West Country
  8. Prior Mailing Archive

Congratulations to geologists at Wells Cathedral School

Well done on representing the South West Regional Group in The Geological Society's National Schools Geology Challenge 2015
    

11th & 12th July - Two independent field courses - South Malverns & Jurassic of Cotswolds

Dr. Nick Chidlaw is organising the following two courses; they are independent of each other: both courses can be attended, or either course, according to your particular interest / availability. 
Each course has a fee of £25.00 per person.
Contact Nick if you are interested in either or both.

THE SOUTH MALVERNS AND ADJACENT AREAS: a circular geological walk
Saturday 11th July 10.00 am – 5.00 pm.
The dramatic ridge of the Malvern Hills has attracted the curiosity of geologists and naturalists, and drawn walkers for generations. This field day will take you on a gently-paced, circular walk across part of the high south Malverns, and the lower ‘hogs back’ and scarp country to the west, Frequent stops will allow landforms, both near and distant, and their underlying geology to be explained, and rock exposures examined en route. A variety of igneous, sedimentary and metamorphic rocks will be studied of Late Precambrian and Silurian age, revealing a legacy from two major episodes of plate tectonic collision and intervening tropical coral-rich seas. The walk is approximately 4 miles long, and no prior knowledge of geology or the area is assumed.

Gullet Quarry and Swinyard Hill just beyond

JURASSIC CONTRASTS OF THE COTSWOLDS: muddy rift basin seas and clear limestone shoals 
Sunday 12th July 10.00 am – 5.00 pm
During the Jurassic period (c. 200 – 145 million years ago), the North Atlantic Ocean basin was only just beginning to open between what is now the United States and NW Africa, and had not yet done so from Newfoundland and Iberia northwards. This latter area, which included the British Isles, was characterised by unstable crustal tension within which the remainder of the ocean basin would eventually open. This unstable crust, overlain by shelf seas and islands, comprised a mosaic of rift basins, each with their own history of subsidence and eventual stabilisation. The area of crust that became the British Isles at this time lay about 40 degrees N and had a humid, sub-tropical climate.  The Cotswolds are located in one of these formerly-active rift basins, and are characterised by strata that indicate repeated rifting and infilling by mostly muddy sediments in the Early Jurassic, and much greater crustal stabilisation, when mostly clear very shallow waters and the deposition of limestones prevailed, in the Middle Jurassic. No prior knowledge of geology or the area is assumed.

  Tuffley Brickpit

Leckhampton Hill Quarries

For each course, a handout outlining the day’s programme, including location sketch maps, optional reading list, geological history, and graphic / written logs detailing the rocks to be studied, will be forwarded in advance of the course to those enrolled.
Please note that for each course you will need to:
- Arrange your own transport
- Bring your own packed lunch, and any refreshments (e.g. flask of coffee, fruit juice, mineral water etc.)
- Wear strong footwear with good tread and ankle support, and have waterproof clothing with you in case weather is poor.
- Wear a hard hat (we will often be close to overhead quarry/cliff faces) – if you do not possess one of these, let me know in advance and I will provide you with one for the day.
You would be insured against accident for the duration of each course.

    

19th May - Near Surface Geophysics


    

June - William Smith lecture and field trip / July - field trip

June 4th
William Smith's earliest career to 1810 (and thus his time in the Bath area)
Professor Hugh Torrens, Keele University
Further details on Bath GS website

Saturday 13th June
William Smith day: from Tucking Mill along the Somerset Coal Canal
Dr. David Workman, Bath Geological Society
We will walk down to Tucking Mill and follow the canal from there to the Combe Hay lock flight and then back up the hill to Southstoke 
Meet at 10.30 a.m. at Holy Trinity Church, Combe Down. Accessible by bus and there is street parking in the area. We shall finish the walk at Southstoke where some cars will be parked. Strong footwear and packed lunch will be needed.
Contact the field secretary for more information


4th July - Geology of the Black Mountain, western Brecon Beacons
Bath Geological Society is planning to book a coach for this exciting field trip to be led by one of our favourite leaders - 
Dr. Geraint Owen from Swansea University
The coach will start in Box at 8.00 a.m. and then pick up in Bath and Bristol en route. The cost will be £25.
Please email the field secretary to book your place as soon as possible - only a few seats left.
    

May 7th - Numerical modelling of sedimentary systems

Bath Geological Society - May lecture
Numbers, models and layered rocks: what can we learn from numerical modelling of sedimentary systems?
Professor Peter Burgess, Head of Department of Earth Sciences, Royal Holloway, University of London
While many other areas of science, for example physics and chemistry, can use experiments to help understand how physical systems work, sedimentary geology has for most of its history been limited to observation of natural systems recorded in outcrop and beneath the surface in sedimentary basins. This has been especially problematic for our understanding of how sediments from modern depositional systems, for example deltas and shallow carbonate seas, are incorporated into the stratigraphic record and preserved as layered rocks or strata. An understanding of how sediments are deposited and preserved as strata is key to our understanding of Earth surface systems, and also of significant economic interest for water and hydrocarbon resource exploitation. New developments in the numerical modelling of sedimentary systems have much potential to address many of these issues. This talk will focus on examples of numerical computer modelling and attempt to show how results from these models are changing how we think about the nature of strata. Perhaps most importantly, the examples demonstrate how new hypotheses can be generated from these models, to drive a new generation of data collection from sedimentary rocks in outcrop and in the subsurface.
7.30 p.m. 16 Queen Square, Bath
Everyone welcome - visitors £4 - free refreshment
    

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