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The Geologists' Association @geolassoc.bsky.social · 01/10/2026

Welcome to October 2026 with a striking picture of a Jurassic ammonite from Charmouth in Dorset taken by Phil James, which was Highly Commended in the GA 2025 Photographic Competition.

The image from the Geologists Association 2026 calendar for October - a Jurassic ammonite from Charmouth in Dorset taken by Phil James

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The Geologists' Association @geolassoc.bsky.social · 29/09/2026

Volume 25, number 3 (September 2026) of the Geologists' Association Magazine is out now! This issue includes a write up of the 2026 field meeting to Sicily & The Aeolian Islands, which proved to be very popular and we are running this trip again in 2027: geologistsassociation.org.uk/overseasfiel...

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The Geologists' Association @geolassoc.bsky.social · 23/09/2026

We celebrated another Curry Fund success story at the weekend with the unveiling of a commemorative plaque by Peaches Golding OBE, Lord Lieutenant of Bristol to acknowledge the discovery in 1834 of one of the first dinosaurs to be named: Thecodontosaurus.

Brian Worthington (Chair of CHIS), Peaches Golding OBE (Lord-Lieutenant of the City and County of Bristol), Professor Mike Benton OBE, Bristol University.

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The Geologists' Association @geolassoc.bsky.social · 23/09/2026

We are pleased to announce that Prof. Katherine Joy from the University of Manchester will deliver one of the headline talks at the Festival of Geology this year - Back to the Moon: how and why we explore our closest planetary neighbour?

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The Geologists' Association @geolassoc.bsky.social · 22/09/2026

Join us at The Geological Society Burlington House on Friday, 2nd October for our next free evening talk: Thirty years of discovery at the UK's largest dinosaur track site in North Oxfordshire by Professor Kirsty Edgar, University of Birmingham. Non-members are welcome free of charge.

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The Geologists' Association @geolassoc.bsky.social · 09/09/2026

The deadline is fast approaching for booking your place at our annual conference, taking place in York from Friday 25th - Sunday 27th September 2026. 🚨Deadline for Ice-breaker, Conference and Conference Dinner is tomorrow (Thursday 10th September) 🚨Deadline for Field Trips - Friday 18th September

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The Geologists' Association @geolassoc.bsky.social · 07/09/2026

There's still time to register for our Annual Conference, taking place in York from Friday 25th - Sunday 27th September 2026. We're looking forward to a long weekend focusing on Yorkshire Geology and Landscape in conjunction with Yorkshire Geological Society and Yorkshire Philosophical Society.

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The Geologists' Association @geolassoc.bsky.social · 04/09/2026

We currently have a vacancy for the voluntary role of Magazine Editor. The GA Magazine is a quarterly, full colour publication available free to all members, covering a range of reports, up-to-date news and comment. To enquire or apply email: president@geologistsassociation.org.uk

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The Geologists' Association @geolassoc.bsky.social · 01/09/2026

Welcome to September with a dramatic image from the 2026 Geologists' Association calendar of the view from the Jungfrau towards the Aletsch Glacier in Switzerland taken by Graham Hickman.

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The Geologists' Association @geolassoc.bsky.social · 24/08/2026

There are just a few days left to submit up to 3 photos to our 2026 Geology Photographic Competition. 💰 Cash prizes! 📸Free to enter 📸 Open to GA members and non-members ⏰Deadline: Friday 28th August 2026 Full details on our website: geologistsassociation.org.uk/photocomp_en...

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The Geologists' Association @geolassoc.bsky.social · 21/08/2026

A Lower Cretaceous oyster reef (Cinder Member, Purbeck Limestone Group, Dorset, southern England): biotic response to co-seismic sea-level rise? by Jonathan D. Radley & Robert A. Coram In Proceedings of the Geologists' Association, vol 137, issue 4. Read online www.sciencedirect.com/.../pii/S001...

Measured sections through the Cinder Member (Durlston Formation, Purbeck Limestone Group) in south Dorset, southern England, demonstrating facies associations. a, b, and c = divisions recognised by Ensom (1985a) for Worbarrow Tout and Clements (1993) for Durlston Bay.

Details of Cinder Member (Durlston Formation; Purbeck Limestone Group), south Dorset, southern England. Hammer in a, b, f, and h is 29 cm in length; 28 cm in length in c, e, and g. (a) Burrows on undersurface, Stair Hole (NGR SY 822798). (b) Junction between Cherty Freshwater Member and basal Cinder Member (facies association 1), indicated by dashed line, Durlston Bay (NGR SZ 036784). (c) Probable scour in ‘Hard Cinder’ division (facies association 1), indicated by arrow, immediately to the right of the hammer head. Durlston Bay. (d) Facies association 2, Stair Hole. (e) Nested oysters, loose block, Durlston Bay. (f) Facies association 3 showing sediment-filled articulated oysters, Man o' War Cove (NGR SY 807802). (g) Facies association 4 (FA4) storm beds at top of Cinder Member, east side of Lulworth Cove (NGR SY 828797). (h) ‘Soft Cinder’ division, Durlston Bay (see Fig. 4), showing facies associations (FAs) present.

Northern margin of the Portland–Wight Basin (south Dorset, southern England) showing localities mentioned in the text and structural framework for the Purbeck Limestone Group. Incorporating data from Underhill (2002) and Gallois et al. (2018).

Early Cretaceous (Berriasian) palaeogeographical reconstruction (southern Britain) showing principal depocentres, and structures influencing deposition of the Purbeck Limestone Group. The Pewsey Basin, Mere Sub-basin and Portland–Wight Basin make up part of the composite Wessex Basin (see text). SCSB = Southern Celtic Sea Basin. WAT = Western Approaches Trough. WS = Wessex Shelf. RF = Ridgeway Fault. PF = Purbeck Fault. PI = Portsdown Inversion. WBF = Wight–Bray Fault. CECH = Central English Channel High. LPF = London Platform Faults. MWH = Market Weighton High.

Adapted from Cope et al. (1992), Hamblin et al. (1992), Hawkes et al. (1998), Underhill and Stoneley (1998), Underhill (2002) and Rawson (2006).

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The Geologists' Association @geolassoc.bsky.social · 17/08/2026

Calling all Key Stage 2 Science teachers! Our SchoolRocks! Year 3 'Rocks & Soils' & Year 6 'Evolution' specimen boxes for the autumn term are booking up fast. Order yours now by emailing schoolrocks@geologistsassociation.org.uk Full details on our website: geologistsassociation.org.uk/schoolrocks

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The Geologists' Association @geolassoc.bsky.social · 14/08/2026

Bartoncetus wanklyni, new genus of a small dorudontine whale from the Bartonian of England; a lost skull and a forgotten postcranial skeleton by Henk Jan van Vliet et al. In Proceedings of the Geologists' Association, volume 137, issue 4: www.sciencedirect.com/.../pii/S001...

Map of the western and southwestern parts of the European continent in the Bartonian, showing the locations, where remains of small dorudontine archaeocetes have been found. The North Sea Basin was connected with the Tethys and the later Paratethys Oceans through amongst others a south-eastern passage east of the Bohemian Massif, but was probably separated from the Atlantic Ocean by a land bridge between Normandy, France and Southwest England. Map based on Curry and Smith (1975), Smith and Curry (1975), Rögl (1999, fig. 1), Popov et al. (2004), Marandat et al. (2012), Gol’din and Zvonok (2013, fig. 1), Gibbard and Lewin (2014, figs 1–3), de Lapparent de Broin et al. (2018, fig. 1), and Lenz et al. (2021, fig. 1). H, region of Helmstedt, Germany; H-D B, Hampshire–Dieppe Basin, England; L, Lubartów, Poland; V, Italy: Varano, Italy.

Cervical vertebrae, vertebrae A–F (Ce2, Ce‘3’–‘5’, Ce6–7), ‘Zygorhiza’ wanklyni Seeley, 1876, BNSS0777, from the Bartonian of Barton-on-Sea, England. A1–3. Vertebra A (Ce2) in anterior (A1), in left lateral (A2) and in posterior (A3) view. B. Vertebra B (Ce‘3’) in anterior view. C. Vertebra C (Ce‘4’) in anterior view. D. Vertebra D (Ce‘5’) in anterior view. E. Vertebra E (Ce6) in anterior view. F. Vertebra F (Ce7) in anterior view. Ce‘3’–‘5’ in quotation marks, because the position is not completely certain. Scale bar is 50 mm.

Section of the early Eocene strata in Christchurch Bay, England and the distribution of dinocysts, as encountered in BNSS0777. A. Section of the Barton Clay Formation: stratigraphy of the Lutetian and Bartonian sediments in Christchurch Bay, England. Strata with finds of small dorudontine archaeocetes are indicated with braces. Modified after Hooker (1986, text-figure 2) and information from the British Geological Survey, Barton Clay Formation (https://webapps.bgs.ac.uk/lexicon/lexicon.cfm?pub=BAC). B. Section of the Barton Clay Formation correlated with age-diagnostic dinoflagellates in the sediments adhering to BNSS0777. Based on Bujak and Mudge (1994) (dinoflagellate cysts), Eldrett et al. (2004) (polarity zones), adjusted to the Geologic Time Scale 2020, Gradstein et al. (2020). Age of the Barton Clay Formation ranging from approximately midway Chron19r (41.4 Ma) to the earliest part of Chron17r (38.4 Ma) (King, 2016, fig. 72). Lut., Lutetian; Rup., Rupelian; A. dictyoplokum, Areosphaeridium dictyoplokum; A. fenestratum, Areosphaeridium fenestratum; A. michoudii, Areosphaeridium michoudii; H. porosa, Heteraulacacysta porosa; R. borussica, Rottnestia borussica; Rh. draco, Rhombodinium draco. Down-left elbow arrows indicate the last occurrence datum (LOD), and up-left elbow arrows indicate the first occurrence datum (FOD) of the dinocyst taxa.

Palaeoart reconstruction of the living Bartoncetus wanklyni (Seeley, 1876), gen. et comb. nov. by Jonas Hakkens.

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The Geologists' Association @geolassoc.bsky.social · 13/08/2026

We are pleased to announce that Dr Lucia Pérez-Diaz will deliver one of the headline talks at the Festival of Geology this year: The Secret Ingredient for a Habitable Planet. Lucia will also be signing copies of her latest children's books: How the Oceans Work & How the Earth Works.

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The Geologists' Association @geolassoc.bsky.social · 07/08/2026

There's still time to submit up to 3 photos to our 2026 Geology Photographic Competition. 💰 Cash prizes! 🆓 Free to enter 📸 Open to members and non-members ⏰Deadline: Friday 28th August 2026 ℹ geologistsassociation.org.uk/photocomp_en...

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The Geologists' Association @geolassoc.bsky.social · 07/08/2026

'James Hutton and the Restless Earth' is an interesting documentary by Karine Polwart, Dave Milligan & Pippa Murphy, which weaves together the thoughts of Angus Millar, Professor David Farrier & Ilana Halperin plus music specially created for the programme ⏰19.15 BST Sunday 9th August, BBC Radio 4

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The Geologists' Association @geolassoc.bsky.social · 03/08/2026

Miocene vertebrate footprints from the Eastern Paratethys deposits of the southern Caspian, Northern Iran by Nasrollah Abbassi et al. In the latest edition of Proceedings of the Geologists' Association (PGA), vol 137, issue 4 Read online via Science Direct: www.sciencedirect.com/science/arti...

A–B. Photo and sketch of tri- to possibly tetradactyl imprints with an elongate sole impression with numerous bird footprints (Uvaichnites isp.).

Location map, vertebrate fossil tracksite located eastern flank of the Shahid Rajaei Dam, south Sari, Alborz Mountains.

A. Outcrops of Miocene sediments in the eastern side of the Shahid Rajaei Dam, arrow shows footprint bearing layer position, began by ridge-forming conglomerate. B–C. Bivalve fossil and invertebrate ichnofossil (Planolites isp.) in the sandy mudstone, lower part of studied section. D. Basal conglomerate and footprint layer outcrop, view eastwards. E. Stratigraphical column of Miocene sediments in the studied section, with position of vertebrate footprints (a–e).

Map of Paratethys basin with distribution of vertebrate footprint site around the eastern Paratethys (red numbers in circle): 1. Romania (Panin and Avram, 1962), 2. Ukraine (Vyalov, 1965), 3. Armenia (Bogachev, 1958), 4. Turkmenistan (Vyalov, 1983), and 5. Iran (this study); and out of eastern Paratethys (green numbers in square): 1. Hungary (Kordos, 1983), 2. Slovakia (Schmidt, 1965), 3. Austria (Thenius, 1967), 4. Turkey (Mesci et al., 2019), and 5–9. Iran (Abbassi, 2022; Abbassi et al., 2024; Abbassi and Amini, 2008).

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The Geologists' Association @geolassoc.bsky.social · 01/08/2026

Welcome to August 2026 with a colourful picture of The Great Opencast, Parys Mountain, Anglesey taken by Lydia Wardley, which is one of the images in our 2025 Photographic Competition.

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The Geologists' Association @geolassoc.bsky.social · 29/07/2026

We are pleased to announce that Professor Phil Manning, Director of Science at the Natural History Museum Abu Dhabi and Chair of Natural History at The University of Manchester will deliver one of the headline talks at the Festival of Geology this year: Impossible Fossils.

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The Geologists' Association @geolassoc.bsky.social · 21/07/2026

The latest edition of Earth Heritage magazine is out now! Issue 65 is full of interesting and informative articles about geology and earth-science sites and initiatives across the UK Free online: www.earthheritage.org.uk/.../EH-65_fi... Buy a hard copy: geologistsassociation.org.uk/earthheritage/

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The Geologists' Association @geolassoc.bsky.social · 20/07/2026

Thank you to Paul Hildreth of Yorkshire Geological Society for leading our weekend field meeting to Flamborough Head and the Yorkshire Coast. We enjoyed many opportunities to examine the strata up close, including an in-situ Sternotaxis plana zonal marker fossil. Photo credit: Cathy Gallagher.

Paul describing the chalk exposure to the assembled group. Photo: Cathy Gallagher.

Sternotaxis plana zonal marker fossil. Photo: Cathy Gallagher.

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The Geologists' Association @geolassoc.bsky.social · 19/07/2026

We currently have a vacancy for an Honorary General Secretary. If you think you have the experience and skills necessary to fulfil the role and would like to apply for this position, please contact the GA President: president@geologistsassociation.org.uk

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The Geologists' Association @geolassoc.bsky.social · 17/07/2026

Save the date! Join us and our colleagues from @rockwatch.bsky.social on Saturday 7th November 2026 from 10.30am - 4.30pm at Burlington House in London for our FREE Festival of Geology. Full details coming soon via our website: geologistsassociation.org.uk/festival/

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The Geologists' Association @geolassoc.bsky.social · 16/07/2026

Booking for the GA 2026 Conference in York is now open! 🗓️25 - 27 September 2026 📍York Join us for for the whole weekend or just one day - you choose. 🥳GA Student Members can attend the Saturday Conference for FREE! ℹ️ Full details on our website: geologistsassociation.org.uk/conferences/

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The Geologists' Association @geolassoc.bsky.social · 09/07/2026

Our field excursion to the White Cliffs of Kingsgate, which sadly had to be cancelled on Saturday 6th June, has been rearranged and will take place on Saturday 17th October Cost: £5 GA Members / £15 non-members For full details see our website: geologistsassociation.org.uk/ukfield/#kin...

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The Geologists' Association @geolassoc.bsky.social · 08/07/2026

Thank you to Dr Cathy Hollis for leading an informative field meeting to examine the Visean strata around the Great Orme headland. The group were treated to many examples of Late Carboniferous exposures, illustrating the growth and demise of the Mississippian carbonate platform.

Cathy preparing to describe the Pier Dolomite exposure to the group.

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The Geologists' Association @geolassoc.bsky.social · 06/07/2026

Volume 25, number 2 (June 2026) of the Geologists' Association Magazine is out now! This issue includes articles on trips to Iceland and New Zealand, an update on the Mary Anning statue maquette road trip, 2026 GA Award winners and the 2025 Halstead Lecture to name but a few.

Front cover of the Geologists' Association quarterly magazine, volume 25, number 2 (June 2026) showing a picture of the western Southern Alps shrouded in dense forest and almost permanent cloud, looking toward the Cropp River basin and Hokitika Gorge. Aotearoa, the Maori name for New Zealand, means 'long white cloud'. Photo: Jonathan Turner.

Ellie Kew as Mary Anning at Somerset Earth Science Centre, which is also hosting the Mary Anning statue macquette.

New Zealand plate boundaries configuration and a schematic cross-section through the Southern Alps, The deep geometry of the Alpine Fault is speculative. Adapted from Little et al. (2005).

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The Geologists' Association @geolassoc.bsky.social · 01/07/2026

Welcome to July with a spectacular image of Serpentine boulders, Kynance Cove, Cornwall from the Geologists' Association 2026 calendar, which was taken by Jonathan Turner and won second prize in the GA 2025 Photographic Competition.

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The Geologists' Association @geolassoc.bsky.social · 30/06/2026

Thank you to Emma Nicholls & Duncan Murdock of @morethanadodo.bsky.social and Mark Stanway, Quarry Manager at Dewars Farm Quarry operated by Smiths Bletchington for hosting the Geologists' Association President's Day visit yesterday.

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The Geologists' Association @geolassoc.bsky.social · 22/06/2026

Join us online on Friday 3rd July 2026 at 19.00 BST for our next free talk - All fossils are rotten: the science of death, decay, and soft tissue preservation by Thomas Clements The talk will be via Zoom. Non-members should call 020 7434 9298 or email sarah@geologistsassociation.org.uk for details

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The Geologists' Association @geolassoc.bsky.social · 20/06/2026

Congratulations to Dr Colin Prosser on being appointed MBE in the King's Birthday Honours list 2026 in recognition of his services to geoconservation at Natural England Colin is the GA Geoconservation Officer, is actively involved in the PGA publications committee and is also a former GA President

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The Geologists' Association @geolassoc.bsky.social · 10/06/2026

A second specimen of the enigmatic Wealden reptile Yaverlandia by Darren Naish & Steven C. Sweetman. In Proceedings of the Geologists' Association, volume 137, issue 3. Available now via Science Direct: www.sciencedirect.com/science/arti...

Yaverlandia bitholus Galton, 1971. Holotype specimen, MIWG 1530, in dorsal view (A) and ventral view (B). IWCMS. 2012.585 in dorsal view (C), anterior view (D) and ventral view (E).

Schematic lithological log of the upper part of the Wessex Formation exposed in the cliff and on the foreshore in the vicinity of Yaverland on the south-east coast of the Isle of Wight. Modified from Sweetman et al. (2015). Bed numbers from Radley (1994).

Outline map of southern Britain showing the location of the Isle of Wight (A). Outline geological map of the Isle of Wight showing the locality from which the holotype specimen MIWG 1530 and the second specimen, IWCMS. 2012.585, were recovered (B).

Cover of the scientific journal Proceedings of the Geologists' Association.

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The Geologists' Association @geolassoc.bsky.social · 09/06/2026

Join us & @rockwatch.bsky.social on 13-14 June at Lyme Regis Fossil Festival for a weekend full of family-friendly fossil-related fun. Look out for our stand in the Lister Gardens Marquee. Plus, Ben Cunningham, one of our Student Representatives, will be giving a free talk at the Driftwood Cafe.

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The Geologists' Association @geolassoc.bsky.social · 04/06/2026

There's still time to register for our next free online lecture, tomorrow evening (Friday 5th June) at 19.00 GMT: Trace fossils: footprints and burrows - evidence of life when there are no bones, teeth, shells etc with Maurice Tucker. Email sarah@geologistsassociation.org.uk to register.

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The Geologists' Association @geolassoc.bsky.social · 01/06/2026

Welcome to June with a mesmerising image taken from the Geologists' Association 2026 calendar of the Isle of Staffa, Inner Hebrides, Scotland taken by Peter Lincoln.

ISLE OF STAFFA, INNER HEBRIDES, SCOTLAND

The island of Staffa, with its famous Fingal’s Cave, is entirely of volcanic origin. It consists of black, fine-grained basalt lava from volcanoes active in the Eocene epoch. The slow cooling of one of the lava flows has resulted in the formation of remarkable polygonal columns.
Photograph: Peter Lincoln.

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The Geologists' Association @geolassoc.bsky.social · 28/05/2026

Come and join us at the Great Exhibition Road Festival on the 6th & 7th June 2026. The GA stand will be there both days with our interactive exhibits, fossil & rock specimens and information so do call by and say hello! Full details on their website: www.greatexhibitionroadfestival.co.uk

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The Geologists' Association @geolassoc.bsky.social · 27/05/2026

Carboniferous tetrapod fauna of the fossil lycopsid trees at Joggins and the origin of the hollow tree guild by John H. Calder, Andrew C. Scott, Brian L. Hebert, Andrew C. Milner & Matthew R. Stimson. In Proceedings of the Geologists' Association, vol 137 (2): www.sciencedirect.com/science/arti...

Plate of representative tree fauna: (a) characteristic assemblage of tetrapod bones and charcoal; (b) jaw of the non-amniote Hylerpeton dawsoni (R4180); (c) coprolitic mass and bones of the amniote Hylonomus lyelli (R4564); (d) the early land snail Dendropupa vetusta (G92); (e) detail of coprolitic mass in (c); (f) two specimens of the millipede Xyloiulus sigillariae (28795). Photographs (b–f) courtesy Natural History Museum, London.

Modern and ancient fire scars: (a) basal fire scar in Taxodium distichum, inhabited by nine-banded armadillo (Dasypus novermcinctus), Mississippi Delta; (b) notched, charred lycopsid tree base rife in tetrapod skeletal material, below coal 21 of Logan (1845), interpreted as a fire scar; (c) interpretive drawing of tree and fire scar in (b). Key to interpretive drawing: a) massive sandstone; b) silty fine charcoal with tetrapod bones; c) coalified strands of cortex/periderm; d) silty sandstone infilling fire scar; e) massive sandstone encircling tree.

The excavated tree-fill at site R114, Rusinga, Kenya, that bore the skeletal remains of Proconsul africanus (Mark Teaford photograph, used by permission). b) Depiction of the ‘1951’ Proconsul-bearing tree from the Miocene of Kenya, from Walker and Teaford (1989), used by permission (illustration by Tom Prentiss, 1936–1997).

Location map of fossil tree fauna sites at Joggins. Meterage refers to stratigraphical section of Davies and Gibling, 2003 (see Fig. 2).

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The Geologists' Association @geolassoc.bsky.social · 21/05/2026

Join us for our next evening talk: Trace Fossils: footprints and burrows - evidence of life when there are no teeth, bones etc by Maurice Tucker, University of Bristol. 📅Friday 5th June, 2026 🕖19.00 BST 📍Online via Zoom 🎟️Free

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The Geologists' Association @geolassoc.bsky.social · 13/05/2026

We are making our annual return to Smokejacks Quarry on Sun 4th Oct 2026, for a field excursion led by Ed Jarzembowski & Peter Austen Cost: £5 GA Members / £15 non-member GA Members have priority booking on Field Meetings until 4 weeks beforehand when any remaining places will open to non members

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The Geologists' Association @geolassoc.bsky.social · 11/05/2026

The use of minerals, plants and burnt materials in ancient medicine: Approaches to working recipes in John the Physician's Therapeutics from late 13th century Cyprus by Andrew C. Scott et al. In Proceedings of the Geologists' Association, volume 137-2: www.sciencedirect.com/science/arti...

Scanning electron micrographs of cuttlefish bone.

a. Uncharred cuttlefish bone.
b. Uncharred cuttlefish bone.
c. Cuttlefish bone charred at 300 °C for 1 h.
d. Cuttlefish bone charred at 300 °C for 1 h.
e. Cuttlefish bone charred at 600 °C for 1 h.
f. Cuttlefish bone charred at 600 °C for 1 h - crushed showing isolated blades.

Cyprus and other comparative minerals:

m. Galena.
n. Sphalerite.
o. Chromite.
p. Molybdenite.
q. Stibnite.
r. Hematite.
s. Cuprite.
t. Copper pyrite and malachite.
u. Orpiment.
v. Calamine (hemimorphite). Zinc silicate Cumberland, England.
w. Chrysocolla, locality unknown.
x. Lapis lazuli, Afghanistan.

Cyprus and other comparative minerals:

a. Cyprus sock sulphide containing iron pyrite and chalcopyrite, Cyprus.
b. Chalcopyrite from within stock pyrite ore. Cyprus.
c. Sulphide ore, Cyprus.
d. Cyprus sulphide ore undergoing decay.
e. Decay products from e.
f. Umber from Cyprus.
g. Azurite and malachite.
h. Crushed azurite.
i. Celadonite in pillow lavas, Klirou Bridge, Cyprus.
j. Gypsum.
k. Baryte.

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The Geologists' Association @geolassoc.bsky.social · 10/05/2026

Congratulations to all the recipients of our 2026 Awards, which were presented at our AGM on Friday evening at Burlington House. Thank you to Dr Liam Gallagher, who steps down from his role as President and welcome to Alison Barraclough who takes on the role of President for the next two-year term.

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The Geologists' Association @geolassoc.bsky.social · 05/05/2026

Join us on for our AGM, annual awards ceremony and President's Address: 'Calcareous nannofossils - Little things can make a big difference! - Part 2. 🗓️Fri, 8th May 2026 📍@geolsoc.bsky.social Burlington House ☕from 18.00 BST with the AGM commencing at 18.30 BST Non-members welcome free of charge.

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The Geologists' Association @geolassoc.bsky.social · 05/05/2026

For the tercentenary of the birth of James Hutton, the founder of modern geology, we are visiting his home city of Edinburgh to explore two of his most famous localities. 📆7th - 9th July 2026 🎟️£15 GA Members / £45 non-member Full details & registration: geologistsassociation.org.uk/ukfield/#edi...

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The Geologists' Association @geolassoc.bsky.social · 01/05/2026

Welcome to May '26 with a beautiful image of sea stacks near Newquay in Cornwall, by Thomas Pashley The dramatic cliffs north of Newquay consist of sandstones and slates of Devonian age, about 400 mya. In places there are impressive sea stacks, such as this famous group known as the Bedruthan Steps

SEA STACKS NEAR NEWQUAY, CORNWALL

The dramatic cliffs north of Newquay consist of sandstones and slates of Devonian age, about 400 million years old. In places there are impressive sea stacks, such as this famous group known as the Bedruthan Steps. Photograph ©Thomas Pashley.

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The Geologists' Association @geolassoc.bsky.social · 23/04/2026

Microvertebrates from the Cliff End Bone Bed (Wealden, Lower Cretaceous), East Sussex, UK by Johnny Clavo et al A Proceedings of the Geologists' Association 'Article in Press': www.sciencedirect.com/.../pii/S001...

Bony fish fauna from the Cliff End Bone Bed. (A–H) Teeth of semionotiform fish, traditionally assigned to Lepidotes, contemporarily assigned as Scheenstia mantelli, in lateral views (BRSUG 22957-93, BRSUG 22957-60, BRSUG 22957-20, BRSUG 22957-138). (I–L) Heavily abraded semionotiform teeth assigned as Scheenstia mantelli in lateral (I, J), occlusal (K) and basal (L) views (BRSUG 22957-41). (M–P) Unidentified pycnodont crushing teeth in lateral (M, O), occlusal 👎, and basal (P) views (BRSUG 22957-22). (Q–AG) Pycnodont and semionotiform pharyngeal teeth in lateral views showing different morphologies and abrasion grades (BRSUG 22957-130, BRSUG 22957-129, BRSUG 22957-83, BRSUG 22957-102, BRSUG 22957–100, BRSUG 22957-52, BRSUG 22957-44, BRSUG 22957-10). (AH–AJ) Unidentified albuliform tooth in occlusal (AH), lateral (AI), and basal (AJ) views (BRSUG 22957-166). (AK) Ganoid bony fish scale (BRSUG 22957-1). Scale bars represent 500 μm.

Photographs of material from the Cliff End Bone Bed. (A) A block of Cliff End Bone Bed recovered from the beach. (B) Petrological thin sections in Cross Polarised Light (XPL) above and Plane Polarised Light (PPL) below, showing generally rounded quartz grains with point contacts, some separated by matrix; the matrix has cleavage, twinkling and high birefringence of calcite. (C) A view of the cliff area on which the log in Fig. 2B was based.

Wealden stratigraphy and sedimentary log at Cliff End. (A) Stratigraphy of the Hastings Beds and Weald Clay Formation of the Wealden Sub-Basin. Modified from Batten and Austen (2011). (B) Sedimentary log from the Cliff End site, with the Cliff End Bone Bed marked BB at the top of the log. Log is based on data measured by Jon Howell in 2002. Abbreviations: GCF, Grinsted Clay Formation; TWSF, Tunbridge Wells Sand Formation.

Geological map showing the region of Cliff End, Fairlight Cove, and Pett Level; with regional geology indicated. The site corresponding to the Cliff End Bone Bed is marked by a red circle. Bottom right: Cliff End is indicated on the regional geological summary map of SE England. © Crown Copyright and Database Right 2025. Ordnance Survey (Digimap Licence).

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The Geologists' Association @geolassoc.bsky.social · 20/04/2026

We’re proud to announce that we're an official Fossil Festival Supporter of the 2026 Lyme Regis Fossil Festival through one of our Curry Fund awards The GA and colleagues from @rockwatch.bsky.social will be attending the festival on both days, based in the Lister Gardens Marquees on Marine Parade

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The Geologists' Association @geolassoc.bsky.social · 16/04/2026

One of our affiliated societies: Bucks Geology Group is holding a Rock & Fossil Day at Discover Bucks Museum in Aylesbury on Sunday 3rd May 2026 from 12.00 until 15.00 BST. For full details and to buy your ticket visit the Discover Bucks Museum website: www.discoverbucksmuseum.org/.../rock-and...

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The Geologists' Association @geolassoc.bsky.social · 15/04/2026

Post-glacial development of limestone scree in NW England; the example of White Scar, southern English Lake District by Paul A. Carling, Richard B. Pearce & S.E. Darby In Proceedings of the Geologists' Association, vol 137, issue 2 via Science Direct: www.sciencedirect.com/science/arti...

Sedimentology of the basal glacifluvial talus deposits at Point 3. A) Coarse angular talus at the base of the exposure contains a few well-rounded pebbles (blue arrow). A bed of glacifluvial well-rounded pebbles and cobbles, lying above and to either side of the coarse angular talus, exhibits a chaotic fabric and angular clasts are few. White colouration on clasts is calcite cement; often occurring as menisci on the contact points of pebbles; B) basal section normal to the rock face, the rock face being to the right of the image. Sub-rounded glacifluvial boulders stack against the rock face to the right of the image. Incision into the glacifluvial talus has resulted in a fill of coarse angular scree (centre and bottom left), later filled by a red-coloured sandy matrix. The drape of pebble-sized, angular, cemented scree (overlaying the coarse talus) is visible in the top left corner. Yellow scale bar is 0.8 m; C) close-up of openwork pebble pocket (left centre) surrounded by small cobbles within the glacifluvial talus. Scale bar is 10 × 10 cm and applies to the foreground.

Location of White Scar relative to other prominent limestone escarpments in the vicinity of the Winster and Lyth valleys. Blue bars locate prominent rock barriers. Inset figure shows the location of the study area within the British Isles. Redrawn and modified from Wiltshire (2008) with permission of Carnegie Publishing.

Summary cartoon of talus and scree deposits based on several exposures at White Scar (not to scale). Talus is banked steeply against the foot of the convex cliff face, now buried by scree with the steep exposed cliff face above. A degree of stratification, evident in a fining upward trend in particle size and roundness occurs within some of the talus deposits (but not in all), is shown schematically. Scree prograded over the talus to accumulate on bench 2. Preferential concentration of surface water runoff from the top of the cliff resulted in a thick ribbon of calcified deposits cemented to the cliff face. Seepage-induced calcification extended as ‘spurs’ along layers of permeable openwork scree, the latter lying above less-permeable loess-filled strata. Glacifluvial down-cutting may have occurred locally, truncating the talus, as shown centre-left, before it was buried by scree. Figure © Elizabeth Pickett.

Front cover of the scientific journal Proceedings of the Geologists' Association.

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The Geologists' Association @geolassoc.bsky.social · 14/04/2026

The March 2026 issue of the Geologists' Association Magazine is out now! This edition includes an interesting article on the possible origin of glacial material in Norfolk, a full account of the Mammoth excavation at Cerney Wick in 2024 and an ongoing exhibition of Chinese dinosaurs in Dorking.

Corinium Museum Exhibition Feb- Mar 2025. Taken from the article: 'From Mud to Museum in 6 Months' by Neville & Sally Hollingworth.

Front cover of the Geologists' Association magazine, Volume 25, Number 1, March 2026 featuring a photograph of Karen Fawcett’s model of the head of Baryonyx walkeri (Image courtesy of Dorking Museum)

A map of England showing the location of Earsham in Norfolk and the two sets of deposits that form the shallow geology of the site: shallow marine deposit (Crag Group – shaded grey) and glacial deposits (Lowestoft Glacigenic Formation tills and outwash - defined by the blue line which indicates the southern limit of glaciation with the area of concern). The figure also shows the flow trajectories that could be responsible for transporting material to the site. The processes providing the transport are palaeo-rivers, ice flow (glaciers) and ice rafting (icebergs). Taken from the article: 'Boulders, Cobbles and Pebbles in Pleistocene Gravels at Earsham, Norfolk - the scientific value of collecting' by Nick Meade et al.

Panorama of Dr Neil Gostling’s spinosaur exhibition (Image courtesy of Dorking Museum). Taken from the article: 'China Dinosaurs Descend on Dorking' by Clare Hill.

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The Geologists' Association @geolassoc.bsky.social · 13/04/2026

The GA 2026 Photographic Competition is now open for entries Submit up to three photographs on any geological theme for the chance to win a cash prize: 🥇£150 🥈£100 🥉£50 Closing date: Friday 28 August 2026 Full details on our website: geologistsassociation.org.uk/photocomp_en...

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