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The late Quaternary glacial depositional environment at Filey Bay, eastern England: Accretionary mechanisms for thick sequences of tills and stratified diamictons Proc. Geol. Assoc. (IF 1.2) Pub Date : 2024-04-04 David J.A. Evans, David H. Roberts, Emrys Phillips
Construction of the Holderness/Flamborough Head moraine belt on the East Yorkshire coast, England, records the oscillatory onshore flow of the North Sea Lobe of the British-Irish Ice Sheet from ~25.8 to ~19.7 ka BP, during which time a thick sequence of multiple diamictons and associated stratified sediments were emplaced. The sedimentology of a >40 m thick stratigraphy through the moraine belt at
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Stratigraphy and sedimentology of the upper Cenomanian–lower Coniacian in the Northern Aures Range (Algeria) Proc. Geol. Assoc. (IF 1.2) Pub Date : 2024-03-21 Zahra Benzerouel, Marcin Krajewski, Rafika Slami, Mariusz Salamon, Imad Bouchemla, Mohamed Amine Zaidi, Katarína Holcová, Madani Benyoucef
The stratigraphical features and palaeoenvironmental conditions of the upper Cenomanian–lower Coniacian carbonates from the northern part of the Aures Range are described for the first time. Four formations have been recognised, namely the Arris, Adahri, Yabous, and Bou Ouali, respectively. Planktonic foraminifera enable us to assign the upper part of the Arris Formation and the lower part of the Adahri
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New dragonflies from the Upper Eocene of the Isle of Wight, UK (Odonata: Anisoptera) Proc. Geol. Assoc. (IF 1.2) Pub Date : 2024-02-24 André Nel, Andrew J. Ross
Three new fossil wings of dragonflies are described from the Upper Eocene of the Isle of Wight (UK), which add to our knowledge of the Odonata fauna of the Bembridge Insect Bed. They consist of a male hind wing attributed to the Gomphaeschnidae , a forewing attributed to the Aeshnidae , and the first Libellulidae discovered in this outcrop. The two former fossils provide more complete diagnoses of
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Onset of the Rhaetian Transgression in deep waters at Lilstock, North Somerset: Microvertebrate faunas Proc. Geol. Assoc. (IF 1.2) Pub Date : 2024-02-23 Orin Lole Durbin, Christopher J. Duffin, Claudia Hildebrandt, Michael J. Benton
Rhaetian seas in the latest Triassic transgressed from west to east over the southwest of the UK, reaching parts of South Wales and the North Somerset coast first. Evidence comes from marine conditions in the pre-Rhaetian Williton Member, a unit not seen further east. Here, we confirm this hypothesis with reports of diverse, Rhaetian-style fish faunas in the Williton Member, as well as evidence that
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Local and regional British journals: Natural history, geology, geography and ecology, their role and value Proc. Geol. Assoc. (IF 1.2) Pub Date : 2024-02-21 John Boardman
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An overview of scientific research on geoheritage in Morocco Proc. Geol. Assoc. (IF 1.2) Pub Date : 2024-01-24 Mustapha El hamidy, Ezzoura Errami, Aymane Elkaichi
Morocco hosts a wealth of geological heritage, alongside a rich and varied palaeontological heritage that dates back 1.7 billion years, and archaeological assets that chronicle the biological evolution of the human species and their cultural activities. Research into Morocco's geoheritage has pinpointed several sites and monuments, both nationally and internationally recognised, noted for their unique
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Latest Triassic terrestrial microvertebrate assemblages from caves on the Mendip palaeoisland, S.W. England, at Emborough, Batscombe and Highcroft Quarries Proc. Geol. Assoc. (IF 1.2) Pub Date : 2024-01-20 Michael Cawthorne, David I. Whiteside, Michael J. Benton
During the Late Triassic and Early Jurassic, the area around Bristol and South Wales was an archipelago of islands occupied by diverse small-sized tetrapods. The largest of these palaeo-islands was Mendip Island, now forming the Mendip Hills, and the location of some famous fossiliferous sites. These sites have not been described in detail before, and we present new data on three of them. Highcroft
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The first scyphocrinitid loboliths from Thailand Proc. Geol. Assoc. (IF 1.2) Pub Date : 2024-01-20 Clive Burrett, Xiang Fang, Wenjie Li, Hathaithip Thassanapak, Mongkol Udchachon
The first plate loboliths of scyphocrinitid crinoids to be found in Thailand are present in abundance near the top of a formation of Siluro-Devonian limestone in the Ban Tha Kradan area of Kanchanaburi province, western Thailand. Associated conodonts include the upper Ludlow–Pridoli Zieglerodina remsheidensis s.l. and confirm the near cosmopolitan occurrence of loboliths close to the Siluro-Devonian
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Late Cretaceous–Early Paleogene tectonic events in the “North–South Axis” of Central Tunisia Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-12-23 Ikhlass Hajlaoui, Mahmoud Khlifi, Benen Sarsar Naouali, Ali Mahroug, Chaouki Khalfi, Mohamed Mosbahi, Mohamed Gasmi
In order to better constrain the structural evolution of the North–South Axis (NOSA) running through central Tunisia, a multidisciplinary approach based on geological mapping, field observations and paleostress analysis was used. The geological study of the middle part of the NOSA including the Gadoum, Akrouta, Sidi Khalif, Khechem El Kaleb and Faïd structures, showed the predominance of N–S and E–W
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Diverse Lophoctenium burrows from the Upper Devonian (Famennian V and VI) of Algeria Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-12-23 Olev Vinn, Mohamed Bendella, Mansour Zaagane, Abdelmalik Draoui, Radouane Sadji, Ommar Mouzti
Three ichnospecies of Lophoctenium (L. comosum, L. richteri and L. cf. haudimmineri) are reported from the Upper Devonian Argiles de Marhouma Formation (southwestern Algeria) for the first time. This formation contains a diverse assemblage of trace fossils belonging to the Nereites ichnofacies. We describe three ichnospecies of Lophoctenium that correspond to three different feeding strategies among
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Coprolites of the ichnogenus Alococopros from the Late Cretaceous of Morocco Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-12-19 Christopher J. Duffin, David J. Ward
A small collection of coprolites (fossilised faeces) is described from the Upper Couche III Bone Bed (latest Maastrichtian) phosphate horizon, approximately 2 m below the K/Pg boundary of Sidi Chennane Quarry in the Ouled Abdoun phosphate basin, Khouribga Province, Morocco. The coprolites have a distinctive morphology that identifies them as belonging in the ichnogenus Alococopros. This is the first
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Algal microfacies in the Theniet Et Temar Formation (middle Oxfordian), Central Saharan Atlas, Algeria Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-12-11 Chikh Younes Mahboubi, Mohammed Nadir Naimi, Mike Simmons, Mike Bidgood
During the Oxfordian, sea-level rise created widespread carbonate platform deposition on the margins of Neotethys, although some areas remain poorly described. One such area is the Saharan Atlas of Algeria. Accordingly, the middle Oxfordian Theniet Et-Temar Formation at a new locality, Kef El Meleh, is described for the first time. Formed of marl/limestone cycles, 6 broad microfacies are present within
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The influence of bedrock faulting and fracturing on sediment availability and Quaternary slope systems, Talla, Southern Uplands, Scotland, UK Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-12-09 Katie Whitbread, Chris Thomas, Andrew Finlayson
In bedrock-dominated upland terrains, local heterogeneity in the erodibility of rock masses is a critical but under-explored factor constraining sediment erosion, mobilisation and transport. Here we examine how fault-related fracturing controls variations in the erodibility and grain-size of bedrock source material at the hillslope-scale. We then assess how this influences the evolution of slope sediment
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Evaluation of the Late Messinian Abu Madi sandstone reservoirs in the West Al Khilala gas field, Onshore Nile Delta, Egypt Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-11-22 Ahmed Ali, Ramadan S.A. Mohamed, Mohamed Abou Heleika, Mahmoud Gabr, Mohamed Hashem, Mohamed S. Ahmed, Mohamed Abioui, Souvik Sen, Ahmed A. Abdelhady
In this study, we integrated cores and wireline logs to evaluate the petrographical and petrophysical properties of the Late Miocene Abu Madi sandstone reservoir from the onshore WAK gas field. Thin section petrographic analyses indicate that the reservoir consists of coarse to fine-grained, poorly sorted, subangular to subrounded glauconitic quartz arenites exhibiting high mineralogical maturity,
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New small reptile remains from the Late Cretaceous of Patagonia increase morphological diversity of sphenodontids (Lepidosauria) Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-10-12 Federico L. Agnolín, A. Mauro Aranciaga Rolando, Nicolás R. Chimento, Fernando E. Novas
Sphenodontids are a group of reptiles that were diverse and global for much of the Mesozoic but today they are only represented by the New Zealand tuatara. Here we describe new sphenodontid remains coming from the Cretaceous (Maastrichtian) Los Alamitos Formation, at Río Negro province, Argentina. Previous reports in the stratigraphical unit included an indeterminate sphenodontid and the enigmatic
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Cosmogenic (10Be) surface-exposure ages from the Burtness Comb rock avalanche, Lake District, northwest England Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-09-28 Peter Wilson, David Jarman, Maria Miguens-Rodriguez, Derek Fabel
The age of the lower component of the Burtness Comb rock avalanche debris tongue, Lake District, northwest England, has been determined by produced terrestrial cosmogenic (Be) surface-exposure dating of quartz veins from three boulders. Uncertainty-weighted mean ages of 17.37 ± 0.94 ka (determined using the Loch Lomond calibration dataset) and 16.08 ± 1.25 ka (determined using the CRONUS-Earth default
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Elephant seismicity: Ichnological and rock art perspectives from South Africa Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-09-23 Charles W. Helm, Andrew S. Carr, Hayley C. Cawthra, Jan C. De Vynck, Mark G. Dixon, Andrew Paterson, Renee Rust, Willo Stear, Guy Thesen, Fred Van Berkel, Monique Van Tonder
An association between round or oval features and linear features has been noted in South African Pleistocene coastal deposits, in apparent association with elephant tracks. The round or oval features sometimes exhibit concentric rings, and the latter often comprise near-parallel grooves and ridges. In one case the concentric rings and parallel grooves are closely connected. Such an association requires
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Excavating the ‘Rutland Sea Dragon’: The largest ichthyosaur skeleton ever found in the UK (Whitby Mudstone Formation, Toarcian, Lower Jurassic) Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-09-22 Nigel R. Larkin, Dean R. Lomax, Mark Evans, Emma Nicholls, Steven Dey, Ian Boomer, Philip Copestake, Paul Bown, James B. Riding, Darren Withers, Joseph Davis
An almost complete ichthyosaur skeleton 10 m long was discovered in January 2021 at the Rutland Water Nature Reserve in the county of Rutland, UK. This was excavated by a small team of palaeontologists in the summer of the same year. Nicknamed ‘The Rutland Sea Dragon’, this almost fully articulated skeleton is an example of the large-bodied Early Jurassic ichthyosaur . The specimen was analysed , recorded
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Facies, diagenesis, and palaeo-environment significances of the Plio-Quaternary fluvio-lacustrine deposits of Ain Cheggag region, Sais foreland basin, Morocco Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-09-18 Hicham El Asmi, Lahcen Gourari, Imad El Yakouti, Khalil Azennoud, Aziz Hayati, Mohamed Benabbou, Mohammed Lghamour, Yassine Ait Brahim, El Hassane Chellai
Fluvio-lacustrine deposits are promising archives that afford to decipher climate and tectonic signatures, typically when evidence of changes in the depositional settings therein is remarkable. As such, the present work coveys a case study whose fluvio-lacustrine deposits may serve to provide insights into climate and tectonic controls on palaeoenvironmental settings. The study area lies in the northwestern
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Simon Richard Appleton Kelly (1949–2023) Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-09-16 Simon Schneider, Michael A. Pointon
Abstract not available
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A marine microvertebrate fauna from a temporary exposure of the Atherfield Clay Formation, Reigate, Surrey Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-08-30 Trevor J. Batchelor, Christopher J. Duffin
A temporary exposure of the nearshore marine Atherfield Clay (Lower Greensand Formation, Aptian, Early Cretaceous) in the Reigate area (Wonham Mill) of Surrey was sampled for microvertebrate remains in Autumn 2013. Samples amounting to 858 kg of sediment were washed, dried, and sieved to 0.325 mm and the residue searched for all fossil content. This is the first definitive study of the Atherfield Clay
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Valuing the Quaternary – Nature conservation and geoheritage Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-08-19 John E. Gordon, Eleanor J. Brown, David R. Bridgland, Vanessa Brazier
This paper introduces the Special Issue of the Proceedings of the Geologists' Association on ‘Valuing the Quaternary – Nature Conservation and Geoheritage’, arising from the International Union for Quaternary Research (INQUA) Congress in Dublin, in July 2019. It presents an overview of the values of Quaternary geoheritage, which merit recognition as an integral part of nature conservation, to protect
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The Clacton-on-Sea (Essex, UK) GCR site and SSSI: New data and continuing importance Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-08-17 Tom S. White, David R. Bridgland, Peter Allen, Mark J. White
The complex Geological Conservation Review (GCR) site at Clacton-on-Sea, Essex, was notified in 1986 as a Site of Special Scientific Interest. It is an internationally important geosite and Britain's only Lower Palaeolithic type locality, giving its name to the Clactonian stone-tool industry. Fossil- and artefact-bearing channel-fill deposits laid down by the River Thames ~ 420,000 years ago, during
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A Coelophysoidea (Dinosauria, Theropoda) femur from the Tytherington fissures (Rhaetian, Late Triassic), Bristol, UK Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-08-12 João P.S. Kirmse, Michael J. Benton, Claudia Hildebrandt, Max C. Langer, Júlio C.A. Marsola
Theropods originated in the Late Triassic and their relations and early evolution are still topics of discussion. Within Neotheropoda, coelophysoids represent their earliest worldwide radiation and include most Triassic theropods, but their internal relations remain volatile. In this paper, we discuss the significance of a coelophysoid femur from the Rhaetian Tytherington fissures near Bristol, UK
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The first record of calcitarchs from the Takche Formation (Ordovician–Silurian), Himalaya (India) Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-08-12 Olev Vinn, Ravi S. Chaubey, Birendra P. Singh, Om N. Bhargava, Subhay K. Prasad
Limestones of the Takche Formation (Spiti, Himalaya) are characterized by normal marine fauna and flora typical for the Late Ordovician. The flora is represented by algae, mostly by receptaculitids and dasyclad green algae. Various calcareous microorganisms such as calcitarchs, and are present. There are some differences in the microfossil content and abundance between different lithofacies of the
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A diverse trace-fossil assemblage from the Middle Jurassic (Bajocian) Teniet El Klakh Formation (western Saharan Atlas, Algeria) Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-08-10 Fayçal Mekki, Imad Bouchemla, Mohammed Adaci, Sabiha Talmat, Bruno Ferré, Madani Benyoucef
The mixed siliciclastic–carbonate Teniet El Klakh Formation (Middle Jurassic, Bajocian) mainly consists of a monotonous, clay and fine-grained sandstone alternation with some intercalated carbonate beds. The trace fossil record displays moderate to high ichnological diversity with different behaviours, consisting of 28 ichnotaxa belonging to 23 ichnogenera: isp., , , isp., , , , isp., , , isp., cf
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J.A.MoralesCoastal Geology2022SpringerCham978-3-030-96120-6(xxiv+463 pp., Hardback, € 99.99) Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-07-26 Dmitry A. Ruban
Abstract not available
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The Carnian Pluvial Episode: A damp squib for life on land? Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-07-21 Robert A. Coram, Jonathan D. Radley
The Carnian Pluvial Episode (CPE), a 1–2 Ma interval of enhanced humidity midway through the Triassic Period, has been implicated in high levels of biotic turnover in marine environments. The Carnian stage on land also saw major faunal and floral reorganisation, including the extinction of rhynchosaurs, the diversification of dinosaurs and the origin of crocodylomorphs and mammaliaforms. An imperfect
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Schweiz Interlaken to Haslital 1:25,000 geological maps: Strasky, S., Schlunegger, F., Hänni, R., Häuselmann, P., Mojon, A. & Schwizer, B. 2022, Blätter 1209 Brienz und 1208 Beatenberg, 172 pp. ISBN 978 3 302 40098 3; Gisler, C., Labhart, T., Spillmann, P., Herwegh, M., Della Valle, G., Trüssel, M. & Wiederkehr, M. 2020 Blatt 1210 Innertkirchen, 212 pp. ISBN 978 3 302 40102 1; Abrecht, J. 2022, Blatt Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-07-18 David A.G. Nowell
Abstract not available
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First record of the trace fossil Renichnus arcuatus Mayoral, 1987 in the Pliocene of Sidi Brahim (Lower Chelif Basin, NW Algeria) Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-07-12 Rachid Khalili, Olev Vinn
A vermetid etching trace, , has been described from the outer surface of a single right valve of from the Lower Chelif Basin, Algeria. This is the first record of vermetid etchings from the Pliocene of the Mediterranean Sea's southern coast. The vermetids responsible for the etchings used bivalve shells as a hard substrate for attachment. The vermetids used mucus nets to feed and they may have benefitted
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The fossil record's oldest known calculus (an enterolith of the gastrointestinal tract), from the Kimmeridge Clay Formation (Upper Jurassic), UK Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-06-27 Nigel R. Larkin, Thomas Henton, Steve Etches, Adrian J. Wright, Tzu-Yu Chen, Laura L. Driscoll, Richard M. Shelton, Ivan J. Sansom
A calculus is a solid mineral concretion such as a kidney stone, bladder stone, gall stone or stomach stone that forms naturally in a body under certain dietary or environmental conditions. Calculi that form in the gastrointestinal tract are enteroliths and these are often near-spherical objects, sometimes with a hollow centre, with a concentrically layered structure composed of radiating crystals
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A time-transgressive model for microstructures in subglacial tills - Examples from beneath the Late Wisconsinan (MI 2) Laurentide Ice Sheet Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-06-20 John Menzies, Roger C. Paulen, Jessey M. Rice
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Quaternary Earth-science and Palaeolithic conservation initiatives in the Tejo (Tagus), Portugal: Comparison with the Lower Thames, UK Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-06-19 Pedro Proença Cunha, David R. Bridgland, Silvério Figueiredo, António A. Martins, Peter Allen, Mark J. White
Geoconservation measures in the River Tejo, the Portuguese reach of the Tagus, are compared with those in the Thames downstream of London (UK). Both are fluvio-estuarine reaches with staircases of Pleistocene depositional terraces, each with important sedimentary, palaeontological and archaeological records. In both rivers, conservation measures are in place that aim to protect these records, promote
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J.ZalasiewiczHow to Read a Rock: Our Planet's Hidden Stories2022The History PressCheltenham978-0-7509-9995-3(224 pp., £20, hardback) Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-06-14 Stephen Tooth
Abstract not available
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Terrestrial carbon isotope stratigraphy of the Eocene–Oligocene transition, Petrockstowe and Bovey basins, Devon, UK Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-06-09 Mohammed S. Chaanda, Stephen T. Grimes, Rhodri M. Jerrett, Mark Anderson, Melanie J. Leng, Meriel E. Fitzpatrick, Gregory D. Price
The terrestrial sediments of the Petrockstowe and Bovey basins in Devon, UK were examined. Their age is considered to be Eocene and Oligocene. The sediments (kaolinitic clays, silts, sands, gravels, and lignites) from both basins were analysed for carbon isotopes of organic material, in conjunction with total organic carbon and palynological analyses used to unravel the type of and provenance of organic
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New exposure of the Cretaceous–Paleogene unconformity and Paleocene–Eocene pebble bed in the Paleogene outlier at Collier's End, Hertfordshire, UK Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-06-07 Bryan Lovell, Haydon Bailey, Andrew R. Farrant, Liam Gallagher, Chris Green, Jennifer Huggett, Russell Parkins, Jane Tubb
The Paleogene outlier at Collier's End, Hertfordshire lies on the northern rim of the London Basin. This small outlier has archaeological and geological significance. Silica-cemented concretions of Hertfordshire Puddingstone lie within a regionally mappable pebble bed. The first discovery of a Roman quarry to recover puddingstone for manufacture of querns was made in the outlier. A rare complete section
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The curious case of Central Park's dinosaurs: The destruction of Benjamin Waterhouse Hawkins' Paleozoic Museum revisited Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-05-10 Victoria Coules, Michael J. Benton
In May 1871, models and skeleton casts of dinosaurs and other ancient vertebrates destined for a new Paleozoic Museum in Central Park, New York were smashed and destroyed. This greatest act of vandalism in the history of dinosaur study and museum development was attributed to the infamous William ‘Boss’ Tweed, leader of a notorious group of rogue politicians who at the time held the reins of power
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A truly gigantic pliosaur (Reptilia, Sauropterygia) from the Kimmeridge Clay Formation (Upper Jurassic, Kimmeridgian) of England Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-05-10 David M. Martill, Megan L. Jacobs, Roy E. Smith
Four isolated cervical vertebrae from the Kimmeridge Clay Formation (Upper Jurassic, Kimmeridgian) of Abingdon, Oxfordshire, England are identified as from a pliosaurid plesiosaurian sauropterygian on account of their shortness relative to width and height, their near platycoelous nature and the location of tall rib facets on the centrum body. They are noteworthy for their size, with a maximum width
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A nautiloid with ventral bitemarks from the Charmouth Mudstone Formation (Lower Jurassic) near Lyme Regis, Dorset, UK Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-05-05 Paul Davis, Paddy Howe, Chris Paul, Heather Salmon
Locally within the Charmouth Mudstone Formation (Sinemurian, Lower Jurassic) of the Dorset coast fatally bitten ammonites with ventral bite marks are common. Ventral bite marks occur at the rear of the body-chamber. The predator probably severed attachment muscles, thus removing its prey more easily. We report the first ventrally bitten fossil nautiloid, which is unusual in that the large bite mark
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Iron–titanium sands of the Atlantic beaches between Tan-Tan and Tarfaya (southwest Morocco): Characterisation and origin Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-05-02 M. Abioui, E.H. Abia, M. Benssaou, A.Z. Ekoa Bessa, K. Abdelrahman
In Morocco, the most important placers of ferrotitanium minerals are found along the Laâouina–Cape Juby Atlantic coastline, where they accumulate in the upper parts of the foreshores. The heavy minerals would come from the dismantling of the acidic to intermediate magmatic rocks of the Precambrian Anti-Atlasic buttonholes and from the Meseta basement where crystallophyllous rocks predominate. The sands
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The Isle of Wedmore relay ramp: how fault evolution created King Alfred's historic landmark Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-04-24 A.J. Newell, D.C.P. Peacock
The Isle of Wedmore covers an area of ~ 19 km2, rises up to ~ 65 m above the surrounding lowlands of the Somerset Levels, and was an island until the Middle Ages. The topography is interpreted as having been formed by a relay ramp between two right-stepping faults (the Weare Fault to the west and the Mudgley Fault to the east) which have tens of metres of downthrow to the south, and which are probably
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Ammonites and stratigraphy of the “Wild Bed” (Middle Jurassic, Aalenian, Inferior Oolite) at Quarr Hill, Chideock, Dorset Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-04-24 Robert B. Chandler, Volker Dietze, Rolf Chiarini, John Whicher
The Inferior Oolite Formation, 'Wild Bed' of Quarr Hill, Chideock, Dorset is described in terms of ammonite biostratigraphy down to the resolution of biohorizons for a segment of the Aalenian Stage of the Middle Jurassic. A section is presented and descriptions of the ammonites of the families Graphoceratidae, Erycitidae, Hammatoceratidae and Lytoceratidae are made in conjunction with an assessment
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A new neoselachian shark from the marine Early Cretaceous of Southern England Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-04-12 Trevor J. Batchelor, Christopher J. Duffin
Rare, isolated teeth of Corysodon multicristatus sp. nov. are described from two levels in the Atherfield Clay Formation (Early Aptian, Early Cretaceous) of Atherfield Point on the Isle of Wight, UK. Ten teeth of the new species were recovered from 1095 kg of washed and graded sediment residues. The teeth themselves are very small (around 0.5 mm high) and possess a distinctive crown bearing a tiered
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Distinctive azhdarchoid pterosaur jaws from the mid-Cretaceous Cambridge Greensand of eastern England and the Kem Kem Group of Morocco Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-04-04 Roy E. Smith, David M. Martill, Samir Zouhri
An isolated jaw fragment from the Late Cretaceous (Cenomanian) Cambridge Greensand Member of the West Melbury Marly Chalk Formation previously identified as a cestraciontid shark fin spine is referred to the pterosaur clade Azhdarchoidea on account of its lateral and occlusal foramina and edentuly. The specimen differs from the azhdarchoid Ornithostoma sedgwicki from the same deposit in having flat
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Lytoceratid ammonites from the Inferior Oolite Formation (Middle Jurassic, Aalenian and Bajocian) of Dorset (United Kingdom) Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-03-17 John T. Whicher, Robert B. Chandler, René Hoffmann
Ammonites of the family Lytoceratidae from the Middle Jurassic Inferior Oolite Formation, Aalenian to lowermost Bathonian, of Dorset are rarely described, perhaps because the macroconchs are often very large and difficult to collect intact and the microconchs are very small and easily overlooked. Detailed stratigraphical collecting over several years has shown them to be a minor part of the ammonite
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The oldest trilobites in Cambria: Early Cambrian trilobite faunas from the Llanberis Slates Formation, Gwynedd, North Wales Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-03-15 Richard Birch, Lucy M.E. McCobb
Historical published works on the fossil fauna of the Llanberis Slates Formation in Gwynedd, North Wales, concentrated on the endemic trilobite Pseudatops viola (Woodward, 1888), and placed the formation towards the top of Stage 3 (Series 2) of the Cambrian chronostratigraphy. The impression given was that the fauna is not particularly diverse and fossils are rare. However, recent collecting has produced
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New Middle Ordovician (Darriwilian) faunas from the Sultanate of Oman Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-03-10 A.P. Heward, R.A. Fortey, C.G. Miller, G.A. Booth
New trilobite material and the first graptolites from outcrop are described from the Am5 member of the Amdeh Formation near Al Fleij in northeast Oman. The sediments in which these faunas occur are interpreted as distal-shelf deposits with storm beds packed with brachiopods and orthoconic nautiloids. The deposits and its faunas are considered of late Darriwilian age and younger than the shallower-water
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Geology and microvertebrate faunas of the Rhaetian Westbury Formation of Doniford Bay, Somerset Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-03-09 James Tayler, Christopher J. Duffin, Claudia Hildebrandt, Adam Parker, Michael J. Benton
The Rhaetian (latest Triassic) succession of Doniford Bay, North Somerset has been noted as a site of fossils for over 200 years, and yet has never been described in detail despite its importance for palaeontology, for knowledge of a classic Triassic-to-Jurassic transition sequence, for structural geology, and as a venue for field trips. There are two bone beds, which differ substantially in sedimentary
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The heterodont bivalve Maghrebella forgemoli (Coquand, 1862) from Cenomanian of Batna, northeastern Algeria: Palaeobiogeography, biostratigraphy and palaeoenvironment Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-03-01 Riadh Aouissi, Sihem Salmi-Laouar
In the northern Aurès Range near Batna, Algeria, the Cenomanian Smail Marls Formation consists of fossiliferous deposits rich in diverse benthic macrofauna, mostly dominated by bivalves, among them the carditid Maghrebella forgemoli (Coquand, 1862). Almost exclusively Cenomanian, the abundance zone of Maghrebella forgemoli is in the higher levels of Lower Cenomanian, extending from the Sharpeiceras
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Quaternary palaeoecology and the historic environment: Challenges and opportunities for preserving England's wetlands Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-02-28 Zoë Hazell, Jonathan Last, Gill Campbell, Jane Corcoran, Hannah Fluck
Palaeoecological records can provide important information on past cultural and economic activities and landscape change. Wetland sites in particular provide remarkable depository opportunities for such remains. Yet these deposit and site types are often not fully appreciated and are undervalued in terms of their place in our culture and history. This article explores reasons for this and suggests
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Ichnological evidence of marine incursions in the lacustrine–palustrine Bembridge Limestone Formation (Eocene), Isle of Wight, southern England Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-02-22 Dirk Knaust
Trace fossils are described from the Eocene Bembridge Limestone Formation from the Isle of Wight and used to constrain the paleoenvironmental interpretation. The lacustrine–palustrine succession contains three limestone beds, which are separated by clay and marl. The middle and upper limestone beds reveal complex burrow systems developed at their top. Based on their characteristics, these burrow systems
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Carbon isotopes, ammonites and earthquakes: Key Triassic-Jurassic boundary events in the coastal sections of south-east County Antrim, Northern Ireland, UK Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-02-14 Andrew J. Jeram, Michael J. Simms, Stephen P. Hesselbo, Robert Raine
A continuous succession of marine and marginal-marine sediments of Rhaetian (Late Triassic) and Hettangian (Early Jurassic) age is present in the Larne Basin in Northern Ireland. These strata cover a period in Earth's history that included the emplacement of the Central Atlantic Magmatic Province (CAMP), the End Triassic Mass extinction (ETE), the Triassic–Jurassic Boundary (TJB), and major perturbations
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The condition, use and future of the UK's largest accessible dinosaur tracksite at Spyway Quarry, Dorset Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-02-08 Kirsty M. Edgar, Luke E. Meade, Harry T. Jones, Lewis Haller, Sam Scriven, Christopher Reedman, Richard J. Butler
Spyway Quarry in Dorset contains >100 tracks made by large sauropod dinosaurs walking across what was a shelly beach in the Early Cretaceous. It is the largest in situ easily accessible UK dinosaur tracksite, a unique location for the public to directly engage with dinosaurs. Following consultation on how best to open and manage the site considering its 'value', longevity, and resources available,
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Distribution of Devensian glacial erratics and related evidence elucidate complex ice flow changes across a former ice divide: Northern England Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-01-24 Paul A. Carling, Teng Su, Lyubov Meshkova
The Lune Gorge and the uplands of the southern Shap Fells represent a key area in developing an understanding of the dynamics of the Late Devensian glaciation (Dimlington Stadial) of northern England. Here ice masses emanating from southern Scotland, the Lake District and the Howgill Fells interacted in the area of the upper Lune valley. Glacial landforms are recorded and tills noted. The dispersal
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The River And The Rock: River Potholes of Wales, Dewi Roberts, Stephen Tooth, Hywel Griffiths, Gwasg Carreg Gwalch, Conwy (2022), (132 pp., Hardback, £22), ISBN: 978-1-84527-887-8 Proc. Geol. Assoc. (IF 1.2) Pub Date : 2023-01-19 Paul A. Carling
Abstract not available