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A Registered Charity No. 220014 January 2015/ Circular 591 YORKSHIRE GEOLOGICAL SOCIETY President: Dr John Knight MUD GLORIOUS MUDSTONE 14.00 – 17.00 Saturday 31st January 2015 Department of Earth Sciences, University of Durham, Science Lab, Durham DH1 3LF. (Joint meeting with the North-Eastern Geological Society). A Contribution by the YGS to the Geological Society of London’s “2015 - Year of Mud”. Organisers: John Knight (YGS) and Howard Armstrong (Earth Sciences, University of Durham). www.yorksgeolsoc.org.uk NON MEMBERS WELCOME
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Page 1: A Registered Charity No. 220014 January 2015/ Circular 591 ... Circulars/591.pdf YGS 2015 3. A CONCEPTUAL MODEL LINKING ATMOSPHERIC CIRCULATION AND MARINE BLACK SHALE DEPOSITION. Howard

A Registered Charity No. 220014 January 2015/ Circular 591

YORKSHIREGEOLOGICAL

SOCIETYPresident: Dr John Knight

MUD GLORIOUS MUDSTONE14.00 – 17.00 Saturday 31st January 2015

Department of Earth Sciences, University of Durham, Science Lab, Durham DH1 3LF.

(Joint meeting with the North-Eastern Geological Society).

A Contribution by the YGS to the Geological Society of London’s “2015 - Year of Mud”. Organisers: John Knight (YGS) and

Howard Armstrong (Earth Sciences, University of Durham).

www.yorksgeolsoc.org.uk NON MEMBERS WELCOME

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MUD, GLORIOUS MUDSTONE

14.00 – 17.00 Saturday 31st January 2015 Department of Earth Sciences, University of Durham, Science Lab, Durham DH1 3LF.

SPECIAL NOTE: IN THE EVENT OF ACTUAL OR FORECAST SEVERE WEATHER PLEASE CHECK THE LATEST POSITION ON THE YGS WEBSITE: http://www.yorksgeolsoc.org.uk/

14.00 Society Business and Announcements (President of the Society, Dr John Knight)

14.10 A conceptual model linking atmospheric circulation and marine black shale deposition Howard Armstrong

14.40 Fracked or Fiction? The Science of UK Shale Gas Liam G. Herringshaw

15.10 Recent cored borehole to study the lateral equivalent of the upper Pliensbachian and lower Toarcian succession of the Yorkshire Coast Elizabeth Atar

15.25 Coffee/Tea Break

15.50 Natural fractures in Pliensbachian-Toarcian shales, Cleveland Basin, NE England Jonathan Imber

16.20 The Sirius Passet black shale lagerstätte: Silica death masking opens the window on the earliest matground community of the Cambrian Explosion Katie Strang

16.50 Closing remarks

17.00 End of meeting

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A CONCEPTUAL MODEL LINKING ATMOSPHERIC CIRCULATION AND MARINE BLACK SHALE DEPOSITION

Howard Armstrong

Dr Howard Armstrong, Dr Liam Herringshaw, Dr Jonathan Imber (Durham University, Department of Earth Sciences) Prof.Thomas Wagner, (Newcastle University, School of Civil Engineering and Geosciences)

Black shales represent major perturbations in the global carbon cycle and provide the source for much of the world’s oil. With a dwindling of easy to find oil resources and the new challenges presented by shales as unconventional reservoirs it is important to understand the controls that determine the spatial distribution and internal heterogeneities of black shales. Black shales result from the complex interplay between productivity and preservation of organic matter (OM) and dilution. The relative contribution of each of these factors is debated but each is linked to atmospheric circulation, through nutrient supply via fluctuations in continental weathering intensity and runoff and wind-driven oceanic upwelling.

Initially established for the Cretaceous subtropical-tropical Atlantic basins, we introduce a conceptual framework, the “Hadley Cell model,” which proposes that internal, small-scale heterogeneities in black shales were generically related under the ascending (tropical) and descending (subtropical) limbs of the palaeo-Hadley Cells. These are the main atmospheric circulation cell driving humidity and the trade winds in the low latitudes. Using compilations of bulk organic geochemical and climate proxy data we will show how basic geochemical patterns identify dynamic variations in low latitude atmospheric circulation that translate into characteristic patterns of OM quantity and quality and sediment composition and are best preserved near the continents, where the forcing effects are strongest. This knowledge can potentially be used to develop a predictive tool for black shale formation.

Howard Armstrong and Jonny Imber on the Whitby foreshore mudstones.© Howard Armstrong.

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FRACKED OR FICTION? THE SCIENCE OF UK SHALE GAS

Liam G. Herringshaw

Dr Liam G. Herringshaw, (Durham University, Department of Earth Sciences)

There is much hype about the potential for extracting gas from UK shales. However, the data are limited, and the UK Government recently stated that “it is not yet possible to estimate how much [UK] shale gas or oil may be practically and commercially recoverable”. Quantifying this as early as possible in the exploration process would minimize the risk of spending investors’ and taxpayers’ money unnecessarily. Similarly, there has been considerable public concern about the risks posed by fracking, from impacts on health and house prices to fracking-induced earthquakes and water pollution. To address these issues, scientific data are urgently needed.

The ReFINE (Researching Fracking In Europe) and JARR (Jurassic Analogues: Resources to Reserves) projects, led by Durham and Newcastle universities, are investigating the risks and potential of shale gas and fracking. ReFINE researchers have shown that there is a <1% chance of stimulated hydraulic fractures propagating vertically more than 350 metres. We have also shown that induced seismicity caused by fracking activities is small, whilst naturally occurring radioactive material in fracking flowback fluids is unlikely to pose a threat to human health. Of greater concern are long-term well integrity and the monitoring of abandoned wells.

JARR research, meanwhile, has highlighted the lateral variability of natural fractures in shale successions, and the climatic controls on shale sweet spots. By integrating the ReFINE and JARR studies, we are beginning to gain new understandings of unconventional hydrocarbon systems. It is crucial however, that academia, industry, and the government work together to gather and interpret baseline data, so that informed decisions can be made and communicated.

Joint patterns in Kimmeridgian, Kimmeridge Bay, Dorset. © Liam Herringshaw. Saltwick Nab, N. Yorks. © Liam Herringshaw.

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RECENT CORED BOREHOLE TO STUDY THE LATERAL EQUIVALENT OF THE UPPER PLIENSBACHIAN AND LOWER TOARCIAN SUCCESSION OF THE YORKSHIRE COAST

Elizabeth Ata

Elizabeth Atar, João Trabucho-Alexandre, Ian Jarvis, Emanuela Mattoli, Dr Howard Armstrong, Dr Liam Herringshaw, Darren Groke and Prof. Andrew Aplin

A core was recently drilled through the Lower Jurassic of North Yorkshire, U.K., approximately 10 km south of Whitby and 7 km west of Robin Hood’s Bay. This core allows the study of a fresh lateral equivalent of the upper Pliensbachian and lower Toarcian succession exposed along the Yorkshire coast. We studied the uppermost Staithes Sandstone Formation to lowermost Alum Shale Member interval of the core and sampled it approximately every 20–50 cm. We analyzed the samples for organic carbon isotopes, total organic carbon (TOC), and elemental geochemistry (major, trace, and rare earth elements). Using a combination of litho- and carbon isotope stratigraphy, we correlated the core with the classic exposure along the Staithes–Port Mulgrave coast, and our correlation shows that there are no significant lateral changes in stratigraphy between the two localities.

The chief difference between the two successions is that the ironstones of the Cleveland Ironstone Formation are not laterally continuous. Our organic carbon isotope stratigraphy reveals a c. 6‰ negative excursion in the lower part of the Whitby Mudstone Formation, which we correlate to the Toarcian oceanic anoxic event (T-OAE) in the Dactylioceras tenuicostatum and Harpoceras exaratumzones of the lower Toarcian, and a smaller c. 2‰ excursion at the top of the Cleveland Ironstone Formation, which we correlate to the Sulphur Band and the Pliensbachian–Toarcian boundary. TOC values are generally <2% before, 5–20% during, and c. 3% after the T-OAE. Trends in our elemental geochemistry results show patterns of variation that we interpret as being related to climate and relative sea level. The supply of siliciclastic sediment during the deposition of the Staithes Sandstone and Cleveland Ironstone Formations was cyclic and may be related to transgressive–regressive cycles. Our data suggest that siliciclastic sediment supply was shutoff during the T-OAE, and we interpret this as a consequence of relative sea-level rise, which promoted trapping of sediment in nearshore environments. We therefore propose that sediments deposited on the northwest European continental shelf during the T-OAE are palimpsest rather than newly supplied detrital, and we suggest that some organic matter may be recycled too from, for example, Carboniferous sources.

Examining and recording the cliff section at Jet Wyke, Port Mulgrave. © Elizabeth Atar.

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NATURAL FRACTURES IN PLIENSBACHIAN-TOARCIAN SHALES, CLEVELAND BASIN, NE ENGLAND

Jonathan Imber

Dr Jonathan Imber, Jascha Wille, Sarah Clancy, Cassandra Warren, Joel Rodrigues, Dr Howard Armstrong, Dr Liam Herringshaw (Durham University, Department of Earth Sciences)

The Pliensbachian-Toarcian succession within the Cleveland Basin, NE England comprises mudstones, siltstones and sandstones of the Redcar Mudstone, Staithes Sandstone, Cleveland Ironstone and Whitby Mudstone Formations. The Whitby Mudstone Formation includes the famous Jet Rock (Mulgrave Shale Member) with a maximum total organic carbon (TOC) > 15%. The rocks of the Whitby Mudstone Formation entered the early oil generation window prior to exhumation. As such, the Lower Jurassic mudstones of the Cleveland Basin may be analogues for unconventional shale oil reservoirs. The aim of this presentation is to investigate the natural fractures within the Cleveland Ironstone (Pliensbachian) and Whitby Mudstone (Toarcian) Formations.

Sub-vertical fractures that strike NW-SE to N-S are commonly observed between Jet Wyke in the north and Saltwick Nab in the south. Some of these fractures contain calcite fills and many fracture surfaces preserve features such as plumose marks and rib marks. These observations are consistent with tensile opening of natural hydraulic fractures. Overall, the sub-vertical fractures appear to be uniformly distributed although fracture densities within ironstone and carbonate seams are greater than fracture densities within intervening mudstone/siltstone layers. Extension (strain) is localised adjacent to normal faults.

Sub-horizontal, bed-parallel fractures are observed in clay-rich mudstones and siltstones of the Whitby Mudstone and Cleveland Ironstone Formation at Jet Wyke and Port Mulgrave. These fractures contain calcite fills and, in some cases, it is possible to match subtle asperities on both sides of the fracture. These observations suggest that the

Natural fractures within the Cleveland Ironstone at Jet Wyke @a. Surface of sub-vertical fracturing showing plumose

markings and concentric ribs (e.g. at the upper left hand corner of the notebook.

b. Swarms of bed-parallel fracturing with calcite infill within Bed 33 of the Cleveland Ironstone Formation.

c. Detailed view of bed-parallel fracturing calcite film (b) irregularities within the blocky calcite fill, irregularities in the margin (arrowed) can be matched directly across the margin, indicating an opening mode of origin.

© Jonny Imber.

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NATURAL FRACTURES IN PLIENSBACHIAN-TOARCIAN SHALES, CLEVELAND BASIN, NE ENGLAND

Dr Jonathan Imber

bed-parallel fractures also developed by tensile opening and imply that the pore fluid pressure exceeded the overburden pressure at the time of vein emplacement. Possible explanations are that the bed-parallel fractures developed during basin inversion, or that clay-rich lithologies were characterised by unusually high horizontal stresses. Dating of calcite fills to constrain the timing of vein emplacement would be a key test of these competing hypotheses.

THE SIRIUS PASSET BLACK SHALE LAGERSTÄTTE: SILICA DEATH MASKING OPENS THE WINDOW ON THE EARLIEST MATGROUND COMMUNITY OF THE CAMBRIAN EXPLOSION

Katie Strang

Strang, K.M., Armstrong, H.A. Harper, D.A.T. (Durham University, Department of Earth Sciences), Trabucho-Alexandre, J.P. (Institute of Earth Sciences Utrecht, Utrecht University)

The Sirius Passet Lagerstätte (SP) of Peary Land, North Greenland, represents the earliest Cambrian microbial mat community with exceptional preservation of soft tissues, and it pre-dates the Burgess Shale by some 10 million years. The slates have been metamorphosed to low greenschist facies as evidenced by the presence of abundant chloritoid porphyroblasts. Despite metamorphism the slates preserve primary sedimentary textures that allow the depositional environment to be determined. The deposits were originally black shales deposited in low tropical latitudes at or just below storm wave base. The slates are a poorly sorted mix of detrital quartz (60—65%), illite, biotite, Al-rich chlorite.

Sirius Passat, Greenland. © Katie Strang.

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THE SIRIUS PASSET BLACK SHALE LAGERSTÄTTE: SILICA DEATH MASKING OPENS THE WINDOW ON THE EARLIEST MATGROUND COMMUNITY OF THE CAMBRIAN EXPLOSION

Katie Strang

These rocks are host to exceptionally preserved soft bodied organisms and more than ~50 species have been recognised. Trilobites from the SP are preserved as complete, concave hyporelief external moulds and convex epirelief casts. External moulds are shown to consist of a thin film of authigenic silica. The casts are formed from silicified cyanobacterial mat material. SEM-CL data indicate silicification of both mat and trilobites occurred during a single event, shortly after deposition. Pore waters are interpreted to have been alkali, silica saturated, high in ferric iron but low in oxygen and sulphate.

Silicification was initiated by falling pH in the decaying mat. Excess silica was likely derived from remobilized biogenic silica (sponge spicules), the muddy sediment, or brines formed during seasonal stratification. The remarkable siliceous death mask preservation opens a new window on the environment of the Cambrian Explosion. Understanding the depositional environment and the taphonomy is crucial in unravelling the early history of life at the Cambrian Explosion.

Exceptional preservation of trilobite external moulds. © Katie Strang.

NEXT YGS MEETINGTETRAPOD WORLD – THE MULTIDISCIPLINARY TWEED PROJECT

Saturday 24th March 2015

Saturday 24th March 2015, 2pm – 5pm (with pre-visits to the BGS Core Store from 12.30pm). British Geological Survey, Keyworth, Notts. Organisers: John Knight, David Millward (BGS) and Claire Dashwood (BGS).

Plans for 2015 also include a major four day Symposium on The Chalk of the Northern Province: its regional context, organised and supported by the Yorkshire Geological Society, Hull Geological Society, University of Hull and the Stratigraphy Commission of the Geological Society, to be based on the University of Hull, 10-13 September 2015

Access or Download the Symposium’s First Circular from here: http://www.yorksgeolsoc.org.uk/chalk-symposium.htm

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SOCIETY OFFICERS AND COUNCIL FOR THE 177TH SESSION, 2015

Elected at the 6th December 2014 Annual General Meeting

OFFICERS OF THE SOCIETYPresident John Knight PhDVice Presidents Professor Patrick Boylan Noel Worley PhDGeneral Secretary Paul Hildreth BScTreasurer John Holt MScProgramme Secretary Will Watts BScProceedings Editor Stewart Molyneux PhDWebsite and Circular Editor (merged office) Professor Patrick Boylan

OFFICERS APPOINTED BY COUNCILMembership Secretary Christine Jennings-PooleDavid Blythe BSc Claire Dashwood PhDDr. Earl Haworth TD FRCP David Hill BScAndrew Howard PhD Trevor Morse PhDWilliam Paley MSc Richard Saville BScMichael Squirrell BSc John Varker PhD

CO-OPTED Sarah King PhD

OTHER COUNCIL ROLESNoel Worley Chair, Governance Committee; lead on planning authority and geoconservation liaisonJohn Holt Chair, Finance CommitteeWill Watts Chair, Programme CommitteeStewart Molyneux Chair, Publications Committee and Editorial BoardPatrick Boylan YGS Members and Council email listsAndrew Howard: Social MediaMichael Squirrell Membership Secretary (from 1st April 2015 retirement of Christine Jennings-Poole)

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THE SOCIETY’S NEW PRESIDENT FOR 2014 - 2016

DR JOHN KNIGHT

John graduated from the University of Aston with a BSc in Geology and Botany, and continued with a PhD in Geology specialising in Coal Measures plant fossils at the University of Sheffield. He is a geologist with over 35 years experience and a distinguished reputation, particularly in relation to the coal sector, both in the UK and world-wide, now working primarily with his own Harworth Minerals Consultancy. Within the Yorkshire Geological Society he has most recently served as a very active Council Member, Programme Secretary and a Vice-President.

A WORD FROM THE PRESIDENT

I sincerely hope all members have enjoyed a peaceful and happy festive season and that the New Year is marked by a renewal of enthusiasm for our shared interest in the many and varied aspects of the earth sciences. It is a great honour to have been asked to serve as President of the Yorkshire Geological Society, following in the footsteps of very distinguished predecessors.

As I have been privileged to serve on Council under a number of our recent Presidents, I know that the commencement of a new session is a time of reflection on how we, the President and Council, can best maintain the objectives of the Society and serve the interests of the members. While our overall membership has remained robust and attendance at indoor meetings remains high, nevertheless attendance at field excursions and also at the AGM and the associated social event reflects only a small percentage of our membership. It is important that all members contribute their views on any aspect of the Society programme that they feel can be improved; any such comments are welcome, directly to myself or to other members of Council. One objective for the coming session is to take a wider sounding of the views of you, the members.

At a period when our science is undergoing wide-ranging development in the use of advanced techniques and new technology it is also important for us as a Society to recognise the virtues and values of a regional geological society such as ours. Our Rules specify the objects of the Society to promote and record the results of research and to extend knowledge of the science.

Our recent and forthcoming meetings programmes endeavour to reflect new areas of research across the science. However, this year has been designated the William Smith Map Bicentenary (1815 – 2015) and it is an important reminder of the underpinning values of observational science and the

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A WORD FROM THE PRESIDENT

application of fundamental core principles in every area of the earth science research. It is in the area of field geology that our Society offers unparalleled opportunity for anyone at any level of knowledge to experience the fun and satisfaction of interpreting field observation in diverse classic geological successions. I believe we should value highly this aspect of our programme.

The provisional programme of activities for 2015 is now in place, and will be developed in further detail in the very capable hands of the new Programme Secretary, Will Watts. The programme for this year will be very full and varied. However, within this, four specific events reflect aspects of the special role of this Society in the wider promotion of geological science and I hope these will attract the participation of many members.

In April the Society will lead a full-day event, Yorkshire Geology Day 2015, to be held at the National Coal Mining Museum for England, in collaboration with many other geological and allied societies in the region and embracing a wide range of activities aimed at engaging with the general public. In June the Society will organise a special meeting as a memorial to Martin Whyte, President of the Society 2006-2008, with an evening meeting in Scarborough and with a field excursion the following day.

The major event for the year 2015 will be a four-day symposium in September being organised jointly with the Geology, Environment and Earth Sciences Department of the University of Hull and Hull Geological Society- The Chalk of the Northern Province: its regional context. This will include two full days of field excursions and be aimed at a wide international audience. The Society will also participate in a William Smith Map Bicentenary Meeting at Scarborough in October, run jointly with the Rotunda Geology Group, with presentations on current research in Yorkshire which reflect the application of Smith’s fundamental principles.

I look forward to welcoming many of you to the first meeting of the year in Durham and also to the many other activities throughout the year.

John Knight, President

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DR W S BISAT FRS MEDAL - DR TONY WALTHAM

Award of the first Dr W S Bisat FRS Medal in recognition of distinguished contributions to applied geology to Dr Tony

Waltham

During the 6th December AGM the President announced the award of the first Bisat Medal to Dr Tony Waltham, who was Lecturer in Mining Geology and then Lecturer and Senior Lecturer in Engineering Geology at Nottingham Trent University for 39 years. He is also a leading international autrhority on cave and karst geology and hydrology. Due to

a long-standing lecturing commitment in Asia Tony Waltham was unable to attend the AGM, so arrangements have been

made to present the Medal to him duriing the Society’s Keyworth meeting in March 2015.

REVISED AND SIMPLIFIED MEMBERSHIP RULES AND PROCEDURES, APPROVED 6TH DECEMBER 2014 AGM

Rule 3: Persons wishing to support the Objects of the Society may apply for membership in writing or electronically. Applications shall be considered and approved by the Council or under delegated arrangements determined by the Council from time to time. The election shall be null and void if the first annual subscription id not received within one month of notification of election. Members elected after 1st October in any year choose, either to receive the Proceedings for the year of election and to pay their second subscription on 1st January of the next year, or not to receive the Proceedings for the year of election in which case their second subscription will become due on the 1st January of the year but one after their election.

Rule 4 (a): There shall be the following categories of membership:

(i) Ordinary members who shall be entitled to take full part in the life of the Society and to receive the Circulars and Proceedings of the Society and to use the library referred to in Rule 2 under such conditions as may from time to time be determined by agreement between the Society and the University of Leeds.

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REVISED AND SIMPLIFIED MEMBERSHIP RULES AND PROCEDURES, APPROVED 6TH DECEMBER 2014 AGM

(ii) Student Members who shall be in receipt of full time education at an Institution recognised by the Society. They shall automatically transfer to Ordinary Membership without further election on 1st January following three years of student membership or on 1st January following any extension of studentship for which they will have provided a supervisor’s statement of such extension. They shall enjoy the same privileges as Ordinary Members except that they shall pay a reduced subscription.

(iii) Associate Members who shall enjoy the same privileges as Ordinary Members except that they shall not receive the Proceedings.

(iv) Honorary Members: Any person who has rendered signal service to the Society, or who is distinguished for the pursuit of the objects of the Society, may be elected an Honorary Member by a General Meeting of the Society on the recommendation of the Council. Honorary members shall enjoy the same rights as an Ordinary Member for life, without payment of an annual subscription.

Rule 4 (b)

(i) The annual subscription, which shall be payable in advance on 1st January in each year, shall be as decided by the Council from time to time and confirmed by a General Meeting of the Society.

(ii) Ordinary Members shall pay a reduced subscription from 1st January following their 65th birthday.

(iii) Schools and similar institutions, as determined by Council from time to time, shall be deemed to be Ordinary members.

(iv) Institutions and individuals who make substantial contributions to the funds of the Society shall be accorded the status of Patrons.

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INTERNATIONAL SYMPOSIUM: 20 METERS UNDER WATER!

Rotterdam (NL) on 5 and 6 March 2015

Though large Pleistocene fossil bones and teeth have been dredged up from the bed of the North Sea, particularly over the Dogger Bank fishing grounds, since the mid-19th century, it is only quite recently that it has been realised that large areas of the southern North Sea were land, with extensive vegetation, faunas and at least some human occupation through most of the Last Glaciation. (This may well be the source of much of the material familiar for so long in the later deposits of Holderness and other east coast areas, such as the many fossil mammal bones at localities such as Kelsey Hill, and also of the enigmatic quite frequent occurence of the freshwater bivalve Corbicula fuminalis.) Now widely known as “Doggerland”, extensive underwater research and collecting had been taking place recently, particularly from the Netherlands, and the Port of Rotterdam Authoritiy is now planning a two day International Symposium on 5th and 6th March 2015. This will cover the theme of under water landscapes and archaeology of the coastal zone of the Rhine delta and Southern North Sea and the linkage of this theme to ongoing harbour and offshore engineering works. The Port of Rotterdam hosts the symposium. A mixed research and engineering audience is targeted.

On the first day, a large number of speakers will present the results of recent interdisciplinary research (geological, archaeological, palaeobotanical, archaeozoological and paleontological) carried out in relation to the construction of the Maasvlakte 2 port extension into the North Sea. Culminating in on-site research 20 meters under water in a drowned landscape, the research produced discoveries of hunter / gatherer’s activities from between 8,400 and 6,400 BC (Late Preboreal to Early Atlantic; Early and Middle Mesolithic) and the modes of preservation of such drowned landscape sites (owing to sea-level rise and coastal sedimentary dynamics during the remainder of the Holocene). Furthermore, geological and paleontological results from the areas of underwater sand extraction further offshore will be presented, addressing Pleistocene terrestrial and marine faunas from several stages of deposition and reworking. The second day of the meeting has a morning session on planning, logistical and technical aspects of combining surveying and geological, palaeoenvironmental and archaeological sampling with wet engineering work, and an excursion to the new harbour area.

For more information and registration see http://20metersunderwater.nl

Patrick Boylan

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CORRESPONDING SOCIETIES

Contact society representatives for the latest information

CRAVEN AND PENDLE GEOLOGICAL SOCIETYContact: Paul Kabrna e-mail: [email protected] or http://www.cpgs.org.uk/ (usual meeting place for indoor lectures: The Rainhall Centre, Barnoldswick)

13 February The First Mass Extinction - massive volcanism, environmental change and mass extinction in Cambrian series 2 and 3.Luke Faggetter, University of Leeds

20 February Fossil Lady of Lyme Written and performed by Alison Neil. Admission: £6.50 or £5.00 fully retired. Act 1: 50 mins - Interval - Act 2: 50 mins

13 March A long-term perspective on volcanic ash clouds over northern Europe Elizabeth Watson, University of Leeds

10 AprilWhen hippos roamed Yorkshire - People, prey and predators in the Last Interglacial Eline van Asperen Ph.D., Liverpool John Moores University

EAST MIDLANDS GEOLOGICAL SOCIETYJanet Slater, tel. 01509-843.297; e-mail: [email protected] or http://www.emgs.org.uk (usual meeting place for indoor lectures: Lecture Theatre B3, Biological Sciences Building, University of Nottingham)

14 February William Smith: Dr Hugh Torrens, followed by Society’s Annual Dinner

21st March Annual General Meeting followed by Ekbal Hussian: The North Anatolian Fault

EDINBURGH GEOLOGICAL SOCIETYe-mail: [email protected]; http://edinburghgeolsoc.org/; Lectures Secretary: Kathryn Goodenough, British Geological Survey, West Mains Road, Edinburgh EH9 0ET, tel. 0131 650 0272, e-mail: [email protected]. Lectures are held in the Grant Institute of the University of Edinburgh, West Mains Road, Edinburgh, at 7:30pm, except where stated otherwise.These meetings are open to the public, there is no charge, and visitors are welcome. Tea and biscuits are served after the lectures, upstairs in the Cockburn Museum of the Grant Institute. (See http://www.ed.ac.uk/maps for location.)

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CORRESPONDING SOCIETIES

Contact society representatives for the latest information

HUDDERSFIELD GEOLOGICAL GROUPContact: Phil Robinson, 01484-715.298. http://www.huddersfieldgeology.org.uk/ Meetings at Greenhead College, Huddersfield, on Monday evenings at 7pm unless otherwise stated.

9 February Planetary Geology Beth Steer

9 March Darwin and Galapagos Karel de Pauw

HULL GEOLOGICAL SOCIETYMike Horne. Tel: 01482 346 784 or e-mail: [email protected] web: http://www.hullgeolsoc.org.uk (Usual meeting place for indoor lectures: Department of Geography, University of Hull, at 7.30 pm.

29 JanuaryMicroscopy Evening For members of the Society and Hull University staff and students only

12 FebruaryIceland Land of Rock, Fire, Ice and Water (Evening lecture) Terry Rockett

25th February Alfred Harker’s Times and Travels Lyall Anderson - joint evening meeting with the Harker Geological Society

5th March From Wollaston and Brora to Brae: Understanding your oil field (Evening lecture) Rodger Connell and the AGM.

LEEDS GEOLOGICAL ASSOCIATIONAnthea Brigstocke (General Secretary) Tel : 01904 626013. E-mail: [email protected] See website: www.leedsga.org.uk for directions.

29 January Following in the footsteps of Charles Dawin in the Galapagos Islands, September - October 1835 Dr Karel de Pauw

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CORRESPONDING SOCIETIES

Contact society representatives for the latest information

LEICESTER LITERARY & PHILOSOPHICAL SOCIETY - SECTION C GEOLOGYChairman and contact: Dr. Joanne E. Norris, 0116 283 3127, j.e.norris @ ntlworld.com; Website: http://www.charnia.org.uk/ Usual meeting place for indoor lectures (unless otherwise stated): Lecture Theatre 3, Ken Edwards Building, University of Leicester at 7.30pm, refreshments from 7.00pm.

28 January Shining a light into the dark corners of the sedimentary record Professor Sarah Davies

11 February Members Evening New Walk Museum, Leicester

25 February Dawn of the giants: how dinosaurs rose to dominate the Triassic Dr Richard Butler

7 MarchAnnual full-day Saturday Seminar, University of Leicester: Seven Steps to Becoming Human

MANCHESTER GEOLOGICAL ASSOCIATIONhttp://www.mangeolassoc.org.uk Sue Plumb, Hon. General Secretary: e-mail: [email protected]; programme enquiries: [email protected]. (Usual meeting place for indoor lectures: Williamson Building, Department of Geology, University of Manchester)

11 February AGM followed by Presidential Address: Evolution of the Mars Atmosphere and Hydrosphere Dr Ray Burgess. Start 19:00.

4 March 2015Coastal Dunes and Climate ChangeJoint Meeting with the Geographical AssociationDr Paul Rooney, Liverpool Hope University. Start18:30.

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CORRESPONDING SOCIETIES

Contact society representatives for the latest information

NORTH EASTERN GEOLOGICAL SOCIETYProf. Gillian FG Foulger, University of Durham, tel. 0191-334.2314, e-mail: [email protected]. Lectures are at 7.30pm in the Arthur Holmes Lecture Room, Science Laboratories Site, University of Durham. See website for more details: http://www.northeast-geolsoc.50megs.com

31 JanuaryMud, glorious MudstoneEarth Sciences Department, Durham University: 2pm - 5pm Joint Meeting with the Yorkshire Geological Society (see main YGS Circular and Website entries on this)

NORTH STAFFORDSHIRE GROUP OF THE GEOLOGISTS ASSOCATIONEileen Fraser Tel: 01260 271505 email: [email protected] http://www.esci.keele.ac.uk/nsgga/(usual meeting place for indoor meetings: William Smith Building, University of Keele at 7.30pm

WESTMORLAND GEOLOGICAL SOCIETYcontact: E-mail: [email protected] http://westmorlandgeolsoc.org.uk/ Meetings are on Wednesdays and start at 8 pm (unless otherwise stated) and are held in the Abbot Hall Social Centre, Kendal.

18 February AGM and Presidential Address Dr Emrys Phillips

18 March Spiders in Amber Dr David Penney (Univ. of Manchester)

YORKSHIRE MID-WEEK GEOLOGY GROUPWest Yorkshire based informal mainly amateur and retired group that organises monthly field meetings or museum visits on Tuesdays, Wednesdays or Thursdays. Details in regular Newsletters and on the Group’s website: http://mwggyorkshire.webspace.virginmedia.com/. Contact: [email protected]

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GENERAL INFORMATION

SUBMISSION OF PAPERS

Manuscripts for publication in the Proceedings should be submitted to ‘The Editors, Proceedings of the Yorkshire Geological Society, Geological Society Publishing House, Unit 7, Brassmill Lane Enterprise Centre, Brassmill Lane, BATH, BA1 3JN’. Typescripts should be prepared using the updated instructions for authors given on the inside back cover of the latest issue (Volume 60 Part 2, November 2014).

Publication of manuscripts may be expected in the next, or next but one part, following acceptance. The Proceedings will be abstracted and/or indexed in, GeoArchive, GeoRef, Geobase, Geological Abstracts and Mineralogical Abstracts, Research Alert and Science Citation Index Expanded (SCIE).

COPY FOR CIRCULARCopy deadline for Circular 592 - 1st February 2015

NEXT INDOOR MEETING 24th March 2015 - Tetrapod World – the multidisciplinary Tweed Project BGS, Keyworth

CONTACTSGENERAL SECRETARYPaul Hildreth BSc, ‘Kimberley’ Bigby Road, Brigg, North Lincolnshire DN20 8BUTelephone: 01652 655784 e-mail: [email protected]

MEMBERSHIP SECRETARYMs Chris Jennings-Poole BSc., 6 Wolsey Drive, Norton, Stockton on Tees, TS20 1SYe-mail: [email protected]

CIRCULAR & WEB EDITORPatrick Boylan, 2a Compass Road, Leicester LE5 2HFe-mail: [email protected]

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MUD GLORIOUS MUDSTONE14.00 – 17.00 Saturday 31st January 2015 Department of Earth Sciences, University of Durham, Science Lab, Durham DH1 3LF.

(Joint meeting with the North-Eastern Geological Society).

Please Note: Articles and opinions published in the YGS Circular reflect the view of the individuals writing those parts of the Circular and in no way necessarily reflect the view of Council or of the Society as a whole.

Front Cover: Examining and recording the cliff section at Jet Wyke, Port Mulgrave. © Elizabeth Atar.


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