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Geology of the Shepton Mallet Area (Somerset)
Geology of the Shepton Mallet area (Somerset) Integrated Geological Surveys (South) Internal Report IR/03/94 BRITISH GEOLOGICAL SURVEY INTERNAL REPORT IR/03/00 Geology of the Shepton Mallet area (Somerset) C R Bristow and D T Donovan Contributor H C Ivimey-Cook (Jurassic biostratigraphy) The National Grid and other Ordnance Survey data are used with the permission of the Controller of Her Majesty’s Stationery Office. Ordnance Survey licence number GD 272191/1999 Key words Somerset, Jurassic. Subject index Bibliographical reference BRISTOW, C R and DONOVAN, D T. 2003. Geology of the Shepton Mallet area (Somerset). British Geological Survey Internal Report, IR/03/00. 52pp. © NERC 2003 Keyworth, Nottingham British Geological Survey 2003 BRITISH GEOLOGICAL SURVEY The full range of Survey publications is available from the BGS Keyworth, Nottingham NG12 5GG Sales Desks at Nottingham and Edinburgh; see contact details 0115-936 3241 Fax 0115-936 3488 below or shop online at www.thebgs.co.uk e-mail: [email protected] The London Information Office maintains a reference collection www.bgs.ac.uk of BGS publications including maps for consultation. Shop online at: www.thebgs.co.uk The Survey publishes an annual catalogue of its maps and other publications; this catalogue is available from any of the BGS Sales Murchison House, West Mains Road, Edinburgh EH9 3LA Desks. 0131-667 1000 Fax 0131-668 2683 The British Geological Survey carries out the geological survey of e-mail: [email protected] Great Britain and Northern Ireland (the latter as an agency service for the government of Northern Ireland), and of the London Information Office at the Natural History Museum surrounding continental shelf, as well as its basic research (Earth Galleries), Exhibition Road, South Kensington, London projects. -
Mesozoic and Cenozoic Sequence Stratigraphy of European Basins
Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/3789969/9781565760936_frontmatter.pdf by guest on 26 September 2021 Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/3789969/9781565760936_frontmatter.pdf by guest on 26 September 2021 MESOZOIC AND CENOZOIC SEQUENCE STRATIGRAPHY OF EUROPEAN BASINS PREFACE Concepts of seismic and sequence stratigraphy as outlined in To further stress the importance of well-calibrated chronos- publications since 1977 made a substantial impact on sedimen- tratigraphic frameworks for the stratigraphic positioning of geo- tary geology. The notion that changes in relative sea level shape logic events such as depositional sequence boundaries in a va- sediment in predictable packages across the planet was intui- riety of depositional settings in a large number of basins, the tively attractive to many sedimentologists and stratigraphers. project sponsored a biostratigraphic calibration effort directed The initial stratigraphic record of Mesozoic and Cenozoic dep- at all biostratigraphic disciplines willing to participate. The re- ositional sequences, laid down in response to changes in relative sults of this biostratigraphic calibration effort are summarized sea level, published in Science in 1987 was greeted with great, on eight charts included in this volume. albeit mixed, interest. The concept of sequence stratigraphy re- This volume also addresses the question of cyclicity as a ceived much acclaim whereas the chronostratigraphic record of function of the interaction between tectonics, eustasy, sediment Mesozoic and Cenozoic sequences suffered from a perceived supply and depositional setting. An attempt was made to estab- absence of biostratigraphic and outcrop documentation. The lish a hierarchy of higher order eustatic cycles superimposed Mesozoic and Cenozoic Sequence Stratigraphy of European on lower-order tectono-eustatic cycles. -
Austroalpine Liassic Ammonites from the Adnet Formation (Northern Calcareous Alps) 163-211 ©Geol
ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Jahrbuch der Geologischen Bundesanstalt Jahr/Year: 1993 Band/Volume: 136 Autor(en)/Author(s): Meister Christian, Böhm Florian Artikel/Article: Austroalpine Liassic Ammonites from the Adnet Formation (Northern Calcareous Alps) 163-211 ©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at Jb. Geol. B.-A. ISSN 0016-7800 Band 136 S.163-211 Wien, Juli 1993 Austroalpine Liassic Ammonites from the Adnet Formation (Northern Calcareous Alps) By CHRISTIAN MEISTER & FLORIAN BÖHM *) With 14 Text-Figures and 9 Plates Oslerreich Salzburg Oberöslerreich Nördliche Kalkalpen Lias Ammoniten Oslerreichische Karle 1. 50.000 Biostratigraphie BI/1l1er94, 95, 96,126 Palaeogeographie Contents Zusammenfassung 163 Abstract. .. 164 Resume 164 1. Introduction 164 2. Geographical and Geological Framework 164 3. Lithological Description and Qualitative/Quantitative Ammonite Distributions 165 3.1. Schmiedwirt Quarry 165 3.2. Breitenberg Quarry 166 3.3. Rotkogel Outcrop 166 3.4. Rötelstein Outcrop 168 4. Systematic Palaeontology 169 PhylioceratinaARKELL 1950 171 LytoceratinaHYATT1889 174 Ammonitina HYATT 1889 175 5. Biostratigraphical Framework 184 5.1. Sinemurian 184 5.1.1. Early Sinemurian 184 5.1.2. Late Sinemurian 184 5.2. Pliensbachian 184 5.2.1. Early Pliensbachian (Carixian) 184 5.2.2. Late Pliensbachian (Domerian) 186 5.3. Toarcian 186 6. Faunal Composition and Palaeogeographical Remarks 189 7. Conclusion 190 Acknowledgements 190 References 208 Oberostalpine Liasammoniten aus der Adnetformation (Nördlichen Kalkalpen) Zusammenfassung Das Oberostalpin spielt eine Schlüsselrolle für das Verständnis der Verteilungsmuster der jurassischen Ammonitenfaunen und für die Fixierung genauer biostratigraphischer Korrelationen zwischen Tethyaler und Euroborealer Faunenprovinz. -
Paleontological Contributions
THE UNIVERSITY OF KANSAS PALEONTOLOGICAL CONTRIBUTIONS May 15, 1970 Paper 47 SIGNIFICANCE OF SUTURES IN PHYLOGENY OF AMMONOIDEA JURGEN KULLMANN AND JOST WIEDMANN Universinit Tubingen, Germany ABSTRACT Because of their complex structure ammonoid sutures offer best possibilities for the recognition of homologies. Sutures comprise a set of individual elements, which may be changed during the course of ontogeny and phylogeny as a result of heterotopy, hetero- morphy, and heterochrony. By means of a morphogenetic symbol terminology, sutural formulas may be established which show the composition of adult sutures as well as their ontogenetic development. WEDEKIND ' S terminology system is preferred because it is the oldest and morphogenetically the most consequent, whereas RUZHENTSEV ' S system seems to be inadequate because of its usage of different symbols for homologous elements. WEDEKIND ' S system includes only five symbols: E (for external lobe), L (for lateral lobe), I (for internal lobe), A (for adventitious lobe), U (for umbilical lobe). Investigations on ontogenetic development show that all taxonomic groups of the entire superorder Ammonoidea can be compared one with another by means of their sutural development, expressed by their sutural formulas. Most of the higher and many of the lower taxa can be solely characterized and arranged in phylogenetic relationship by use of their sutural formulas. INTRODUCTION Today very few ammonoid workers doubt the (e.g., conch shape, sculpture, growth lines) rep- importance of sutures as indication of ammonoid resent less complicated structures; therefore, phylogeny. The considerable advances in our numerous homeomorphs restrict the usefulness of knowledge of ammonoid evolution during recent these features for phylogenetic investigations. -
Warwickshire's Jurassic Geology
Warwickshire’s Jurassic geology: past, present and future Jonathan D. Radley Abstract. Jurassic strata were extensively quarried in Warwickshire, during the 19th and early to mid 20th centuries, but much of the succession is now poorly exposed. Selected sites are afforded statutory and non-statutory protection as Sites of Special Scientific Interest and Regionally Important Geological and Geomorphological Sites. Warwickshire’s Jurassic history is outlined, demonstrating the value and purpose of the currently protected sites as repositories of stratigraphic, palaeontological and palaeoenvironmental data. The fields, hills and villages of southern and eastern structural hinge throughout much of Lower and Warwickshire, central England, conceal a marine Middle Jurassic time (Horton et al., 1987). This sedimentary succession of Lower and Middle separated the London Platform and East Midlands Jurassic age (Figs 1 and 2). This is at least 400 Shelf in the east from the Severn (or ‘Worcester’) metres thick (Williams & Whittaker, 1974) and Basin in the west (Sumbler, 1996). West of the Axis, spans about 40 million years of Earth history. The in south-western Warwickshire, the Lower Jurassic beds demonstrate a gentle regional dip towards the succession features a laminated, calcilutite- south-east and are affected by numerous normal dominated Hettangian development (Wilmcote faults (Institute of Geological Sciences, 1983), as Limestone Member), a more arenaceous facies well as cambering, landslipping and periglacial development of the Pliensbachian Marlstone Rock cryoturbation (Fig. 3). Unconsolidated Quaternary deposits locally cover the Jurassic sediments, notably in the Dunsmore area of eastern Warwickshire (British Geological Survey, 1984). The latest Triassic-early Jurassic Wilmcote Limestone Member (Blue Lias Formation, Fig. -
Bbm:978-3-0348-7827-2/1.Pdf
Literaturverzeichnis Mit Asterisk bezeichnete Arbeiten sind besonders von Revisionen in systematischer und/oder bio stratigraphischer Hinsicht betroffen, oder dienten als Grundlage für die Korrelation auf Tabelle 4. ACCORSI BENINI, C. & BROGLIO LORIGA, C. (1977): Lithiotis Güm• BOULE, M. & THEVENIN, A. (1906,1907): Types du Prodrome de Pale bel, 1871 e Cochlearites Reis, 1903. 1°. Revisione morfologica e ontologie universelle de d'Orbigny. - Ann. Paleont., 1, p. 97-100, tassonomica. - Boll. Soc. paleont ital., 16, 1, p. 15-60. 165-172, 193-196, Taf. 8, 9, 12, 13, 21, 22; 2, p. 89-96, 161-172, AGER, D. V. & CALLOMON, J. H. (1971): On the Liassie age of the Taf. 13,14,23,24. "Bathonian" of Villäny (Baranya). - Ann. Univ. Sei. Budapest BOURDENET, A. M. (1964): Les Pleuroceras du Domerien superieur Eötvös, Sect geo!., 14, p. 5-16. de Charrnoille (Haute-Saöne). - Ann. sei. Univ. Besan~on, (2) 18, ARKELL, W. J. (1956): Jurassie geology of the world. - London and p.3-24. Edinburgh (Oliver & Boyd). *BREMER, H. (1965): Zur Ammonitenfauna und Stratigraphie des ARKELL, W. J., BRAMKAMP, R. A. & STEINEKE, M. (1952): Jurassie unteren Lias (Sinemurium bis Carixium) in der Umgebung von Ammonites from Jebel Tuwaiq, central Arabia. - Phi!. Trans. r. Ankara (Türkei). - N. Jb. Geol. Paläont., Abh., 122, S. 127-221. Soc. London, (B) 236, p. 241-313. BUCKMAN, S. S. (1918): Jurassie chronology: I. Lias. - Quart 1. geol. *ARKELL, W. J., KUMMEL, B. & WRIGHT, C. W. (1957): Mesozoic Soc. London, 73 (1917), p. 257-327. Ammonoidea. In: MOORE, R. C. (Ed.): Treatise on invertebrate - (1909-30): Yorkshire Type Ammonites (ab vol. -
Jurassic (170 - 199 Ma Time-Slice) Time
Early Jurassic (170 - 199 Ma time-slice) Time ScaLe R Creator CHRONOS Cen Mesozoic Updated by James G. Ogg (Purdue University) and Gabi Ogg to: GEOLOGIC TIME SCALE 2004 (Gradstein, F.M., Ogg, J.G., Smith, A.G., et al., 2004) and The CONCISE GEOLOGIC TIME SCALE (Ogg, J.G., Ogg, G., and Gradstein, F.M., 2008) Paleozoic Sponsored, in part, by: Precambrian ICS Based, in part, on: CENOZOIC-MESOZOIC BIOCHRONOSTRATIGRAPHY: JAN HARDENBOL, JACQUES THIERRY, MARTIN B. FARLEY, THIERRY JACQUIN, PIERRE-CHARLES DE GRACIANSKY, AND PETER R. VAIL,1998. Mesozoic and Cenozoic Sequence Chronostratigraphic Framework of European Basins in: De Graciansky, P.- C., Hardenbol, J., Jacquin, Th., Vail, P. R., and Farley, M. B., eds.; Mesozoic and Cenozoic Sequence Stratigraphy of European Basins, SEPM Special Publication 60. Standard Geo- Ammonites Sequences Ammonites Sequences Smaller Benthic Foraminifers Larger Benthic Foraminifers Calcareous Nannofossils Dinoflagellate Cysts Radiolarians Belemnites Brachiopods Ostracodes Charophytes Stage Age Chronostratigraphy magnetic North Atlantic Tethys Age Polarity Sequences Boreal Sequences T-R Major T-R Period Epoch Stage Substage Boreal Boreal T-R Cycles Tethyan Global, Tethyan Cycles Cycles Zones Tethyan markers Zones Zonal Markers Zonal Markers Zones Boreal Zonal Markers Other Boreal Nannofossils Zones Zonal Markers Other Dinocysts Tethyan Dinocysts Zones Zonal Markers NW Europe Boreal Tethyan Boreal Ostracodes Tethyan Ostracodes Markers Lt. Bajoc. Strenoceras niortense Teloceras banksi Strenoceras niortense Teloceras banksi DSJ14 Lithodinia valensii Belemnopsis Lissajouthyris Lissajouthyris [un-named] 169.8 Stephanolithion speciosum Mancodinium semitabulatum, 169.8 L. galeata mg P., speciosum Durotrigia daveyi, Phallocysta apiciconus matisconensis matisconensis Glyptocythere scitula Teloc. blagdeni Bj3 Telo. blagdeni Bj3 NJ10 Andromeda depressa, G. -
Biogeography Exercise Name ______
EART101: Biogeography exercise Name ______________________________ The Cordilleran belt of western North America is composed of a collage of exotic terranes, microcontinental blocks that originated as island arcs in the Pacific and later were accreted to the continental margin. You would like to know the location of these terranes in the past. The table below contains presence/absence data for Early Jurassic ammonite species from three accreted terranes (Wrangellia W, Stikinia S, and Quesnellia Q) and from the North American continent (Boreal Craton BC and Sonomia So). The Boreal Craton represents higher-latitude, cooler-water faunas and Sonomia contained lower-latitude, warmer-water faunas. W S Q BC So Amaltheus X X X X Pleuroceras X Pseudoamaltheus X Becheiceras X X Arieticeras X X X X Fontanelliceras X Fuciniceras X X X Leptaleoceras X X Lioceratoides X X X Protogrammoceras X X X X X Aveyroniceras X X X Prodactylioceras X X X Reynesoceras X X Cymbites X Fanninoceras X X X X Phylloceras X 1. Calculate Jaccard similarity coefficients between each of the accreted terranes (W, S, and Q), and between the terranes and the two stable continent regions BC and So. The Jaccard coefficient is M/(N1+N2-M), where M is the number of taxa shared between the two regions, N1 is the number of taxa in region 1, and N2 is the number of taxa in region 2. Fill in your answers in the table below. W S Q BC So W S Q BC So 2. For each terrane, determine its approximate paleolatitude in the Early Jurassic. -
REINHARD SCHMIDT-EFFING Münster
MÜNSTERSCHE FORSCHUNGEN ZUR GEOLOGIE UND PALÄONTOLOGIE REINHARD SCHMIDT-EFFING Münster Zur Paläontologie jurassischer Invertebraten. Münster. 1. Die Dactylioceratidae, eine Ammoniten-Familie des unteren Jura (Systematik, Stratigraphie, Zoogeographie, Phylogenie mit besonderer Berücksichtigung spanischen Materials). Münster 1972 Sonderauflage der Mü'nsterschen Forschungen zur Geologie und Paläontologie Heft 25/26 MÜNSTERSCHE FORSCHUNGEN ZUR GEOLOGIE UND PALÄONTOLOGIE Heft 25/26 Reinhard Schmidt-Effing Zur Paläontologie jurassischer Invertebraten. Münster. 1. Die Dactylioceratidae, eine Ammoniten-Familie des unteren Jura (Systematik, Stratigraphie, Zoogeographie, Phylogenie mit besonderer Berücksichtigung spanischen Materials). 31 Abb. Münster. Forsch. Münster (Westf) Heft 25/26 255 S. 7 Tab. Geol.Paläont. 19 Taf. Dezember 1972 Alle Rechte vorbehalten. Jegliche Vervielfältigung einschließlich photomechanischer Wiedergabe nur mit schriftlicher Genehmigung durch den Autor. Gedruckt mit Unter stützung der Westfälischen Wilhelms-Universität Münster. Mitarbeiter und Herausgeber dieser Zeitschrift erhalten kein Honorar. Die Herausgabe der Zeitschrift erfolgt ohne gewerblichen Zweck oder materiellen Gewinn, vielmehr unter Opfern, die für die Förderung der Wissenschaft gemacht werden. Schlüsselworte (Key words) Monographie, Ammonitida (Dactylioceratidae), Unter-Jura, Klassifikation, Biogeographie Spanien, Europa, Amerika Herausgeber: Verein der Geologie-Studenten in Münster e.V. Redaktion: K. Bleker, Chr. Schroer Composersatz: M. Arndt Druck: Phototechnische Zentralstelle der Universität Münster Bestellungen an: Münstersche Forschungen zur Geologie und Paläontologie, D-4400 Münster, Gievenbecker Weg 61 oder über den Buchhandel Ursula gewidmet V Inhalt Abstrakt, R^sumä 1 1. Vorwort 2 Voraussetzungen 2. Einleitung 5 2.1. Material 5 2.2. Erhaltungszustand 5 2.3. Erforschungsgeschichte 6 3. Stratigraphie (Fundschichten in Spanien) 8 3.1. Castrovido (Burgos) 17 3.2. Moncalvillo (Burgos) 17 3.3. Hontoria del Pinar (Burgos) 17 3.4. -
Bulletin of the British Museum (Natural History), Geology
THE SHELL STRUCTURE OF THE LIASSIC AMMONITE FAMILY DACTYLIOCERATIDAE By MICHAEL KINGSLEY HOWARTH CONTENTS Page Abstract .... 47 I. Introduction 48 II. Material used and preparation 49 III. The main shell . 50 IV. The inner shell . 52 V. The dorsal shell 53 VI. The Septal Prismatic Layer 53 VII. Ontogenetic development 55 (a) Protoconch, first whorl and nepionic constriction 56 (b) Smooth whorls after the nepionic constriction . 56 (c) Development of the ribs and the inner shell 57 (d) Insertion of septa and development of the Septal Prismatic Layer ..... 57 (e) Position of secretion of individual layers 60 VIII. Occurrence of inner shell . 61 (a) Dactylioceratidae . 61 (b) Other ammonites . 61 IX. Nomenclature 63 X. Function of the inner shell 64 XL References .... 65 XII. Index ..... 66 ABSTRACT Dactylioceratidae are thought to be unique amongst Jurassic and Cretaceous ammonites, in that, as well as the normal main shell with its thin Outer Prismatic, thick Nacreous and thin Inner Prismatic Layers, they also possess an inner shell, consisting of thin Outer Prismatic and thick Inner Nacreous Layers, which is added to the inside of the main shell, but bridges across the inside of the ribs leaving cavities with characteristic flat floors. The inner shell lines the whole of the lateral and ventral parts of the main shell, while its front edge is \ to \ whorl behind the mouth border and is similar in shape. It is formed by division of the Inner Prismatic Layer when ventral ribs first develop three whorls after the protoconch. At the rear of the body chamber another new layer, the thick Septal Prismatic Layer, lines the whole of the inside of the shell, including the dorsum, where it bridges across the ribs of the venter of the previous whorl leaving crescent-shaped cavities. -
Development of an Equatorial Carbonate Platform Across The
*Revised manuscript with no changes marked Click here to view linked References Development of an equatorial carbonate platform across the Triassic-Jurassic 1 2 boundary and links to global palaeoenvironmental changes (Musandam Peninsula, 3 4 UAE/Oman) 5 6 7 1 1 2 8 Martin R. Hönig *, Cédric M. John , Christina Manning 9 10 11 12 1 Qatar Carbonates and Carbon Storage Research Centre, Department of Earth Science and 13 14 Engineering, Imperial College London, Prince Consort Road, London SW7 2BP, United 15 16 Kingdom 17 18 19 20 2 Department of Earth Sciences, Queens Building, Royal Holloway University of London, 21 22 Egham TW20 0EX, United Kingdom 23 24 25 26 * corresponding author ([email protected]) 27 28 29 30 31 32 33 34 Highlights 35 36 - A shallow-marine carbonate system, studied vertically and laterally, across the Triassic- 37 38 Jurassic transition from the palaeoequator is presented. 39 40 - The vertical stacking pattern is controlled most likely by relative sea level changes. 41 42 - No clear evidence for a biocalcification crisis or ocean acidification across the Triassic- 43 44 Jurassic boundary is visible. 45 46 47 48 49 50 Keywords 51 52 Rhaetian-Hettangian, Strontium isotope stratigraphy, Carbon isotopes, Facies architecture, 53 54 55 Ocean acidification 56 57 58 59 60 61 62 63 64 65 Abstract 1 2 The Triassic-Jurassic boundary is marked by one of the ‘big five’ mass extinctions of the 3 4 Phanerozoic. This boundary event was accompanied by several carbon cycle perturbations, 5 6 potentially induced by the opening of the Central Atlantic and associated volcanism, and 7 8 accompanied by an ocean acidification event. -
Les Ammonites Du Sinémurien Et Du Pliensbachien Des `` Calcaires De
Les ammonites du Sinémurien et du Pliensbachien des “ Calcaires de Laffrey ” (Isère, France). Description d’un nouveau taxon : Pseudojamesonites nov. gen. mouterdei nov. sp. (Eoderoceratoidea). Jean-Louis Dommergues To cite this version: Jean-Louis Dommergues. Les ammonites du Sinémurien et du Pliensbachien des “ Calcaires de Laffrey ” (Isère, France). Description d’un nouveau taxon : Pseudojamesonites nov. gen. mouterdei nov. sp. (Eoderoceratoidea).. Revue de Paléobiologie, Museum d’Histoire Naturelle de la Ville de Geneve, 2009, 28 (2), pp.519-531. hal-00491394 HAL Id: hal-00491394 https://hal.archives-ouvertes.fr/hal-00491394 Submitted on 19 Aug 2019 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. 1661-5468 VOL. 28, N° 2, 2009 Revue de Paléobiologie, Genève (décembre 2009) 28 (2) : 519-531 ISSN 0253-6730 Les ammonites du Sinémurien et du Pliensbachien des « Calcaires de Laffrey » (Isère, France). Description d’un nouveau taxon : Pseudojamesonites nov. gen. mouterdei nov. sp. (Eoderoceratoidea) Jean-Louis DOMMERGUES1 Résumé Des ammonites anciennement récoltées par rené Mouterde dans les niveaux du Sinémurien et du Pliensbachien des « Calcaire de Laffrey » (Isère, France) sont décrites et illustrées pour la première fois. Si la faune du Sinémurien (chronozone à Semicostatum), essentiellement constituée d’Arnioceras du groupe d’A.