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On some Turonian and Coniacian ammonites from central Colombia

William James Kennedy
Acta Geologica Polonica | vol. 71 | No 3 | 259-285 | DOI: 10.24425/agp.2020.134557
Keywords Ammonites Turonian Coniacian Colombia
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Bibliography

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Authors and Affiliations

William James Kennedy
1
  1. Oxford University Museum of Natural History, Parks Road, Oxford OX1 3P Wand Department of Earth Sciences, South Parks Road, Oxford OX1 3AN, United Kingdom

Hydrochemical assessment and groundwater pollution parameters in arid zone: Case of the Turonian aquifer in Béchar region, southwestern Algeria

Ikram Mokeddem Meriem Belhachemi Touhami Merzougui Noria Nabbou Salih Lachache
Journal of Water and Land Development | 2018 | No 39
Keywords Béchar region groundwater hydrochemistry Turonian aquifer water quality
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Authors and Affiliations

Ikram Mokeddem
Meriem Belhachemi
Touhami Merzougui
Noria Nabbou
Salih Lachache

The Upper Turonian–Lower Coniacian (Upper Cretaceous) ammonites from the condensed phosphate beds of Mangyshlak, NW Kazakhstan

William James Kennedy Ireneusz Walaszczyk
Acta Geologica Polonica | 2023 | vol. 73 | No 4 | 635-660 | DOI: 10.24425/agp.2023.148024
Keywords Ammonites Inoceramids Cretaceous Turonian Coniacian Kazakhstan
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Abstract

Eleven ammonites species are described from the condensed phosphate beds of Mangyshlak (in north-western Kazakhstan): Lewesiceras mantelli (Wright and Wright, 1951), Subprionocyclus neptuni (Geinitz, 1849), Prionocyclus spp., Allocrioceras angustum (J. de C. Sowerby, 1850), Hyphantoceras ( Hyphantoceras) reussianum (d’Orbigny, 1850), Hyphantoceras ( Hyphantoceras) cf. flexuosum (Schlüter, 1872), Eubostrychoceras ( Eubostrychoceras) cf. saxonicum (Schlüter, 1875), Scalarites? bohemicus (Fritsch, 1872), Sciponoceras bohemicum bohemicum (Fritsch, 1872), Scaphites geinitzii d’Orbigny, 1850, and Scaphites kieslingswaldensis Langenhan and Grundey, 1891. They provide an incomplete record that spans at maximum upper Middle Turonian to Lower Coniacian and at minimum Upper Turonian to Lower Coniacian. Associated inoceramid bivalves span an interval from upper Middle Turonian (based on the known first occurrence of Inoceramus inaequivalvis Schlüter, 1872) to the lower and middle Lower Coniacian, based on the known last occurrence of Cremnoceramus crassus inconstans (Woods, 1912), in the lower and middle parts of the Lower Coniacian.
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Authors and Affiliations

William James Kennedy
1
Ireneusz Walaszczyk
2
  1. Oxford University Museum of Natural History, Parks Road, Oxford OX1 3PW, UK and Department of EarthSciences, South Parks Road, Oxford OX1 3AN, UK
  2. University of Warsaw, Faculty of Geology, Żwirki i Wigury 93, 02-089 Warszawa, Poland

Upper Albian, Cenomanian and Upper Turonian ammonite faunas from the Fahdène Formation of Central Tunisia and correlatives in northern Algeria

William James Kennedy
Acta Geologica Polonica | 2020 | vol. 70 | No 2 | 147-272 | DOI: 10.24425/agp.2019.126459
Keywords Ammonites Cretaceous Albian Cenomanian Turonian Algeria Tunisia
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Abstract

Over 130 species are documented from the Upper Albian, Cenomanian and Upper Turonian Fahdène Formation and correlatives in Central Tunisia and northern Algeria, based on material described by Henri Coquand (1852, 1854, 1862, 1880), Léon Pervinquière (1907, 1910), Georges Dubourdieu (1953), Jacques Sornay (1955), and new collections. The material consists predominantly of limonitic nuclei, together with adults of micromorphs. There is no continuous record, and a series of faunas are recognised that can be correlated with the zonation developed in Western Europe. These are the Upper Albian Ostlingoceras puzosianum fauna, Lower Cenomanian Neostlingoceras carcitanense and Mariella (Mariella) harchaensis faunas, the upper Lower to lower Middle Cenomanian Turrilites scheuchzerianus fauna, Middle Cenomanian Calycoceras (Newboldiceras) asiaticum fauna, Upper Cenomanian Eucalycoceras pentagonum fauna, and the Upper Turonian Subprionocyclus neptuni fauna. Two new micromorph genera are described, Coquandiceras of the Mantelliceratinae and Cryptoturrilites of the Turrilitinae. Most of the taxa present have a cosmopolitan distribution, with a minority of Boreal, North American and endemic taxa.

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Authors and Affiliations

William James Kennedy

Stratigraphy and palaeoenvironments in the upper Turonian to lower Coniacian of the Saxonian Cretaceous Basin (Germany)– insights from calcareous and agglutinated foraminifers

Richard M. Besen Mareike Achilles Mauro Alivernini Thomas Voigt Peter Frenzel Ulrich Struck
Acta Geologica Polonica | 2022 | vol. 72 | No 2 | 159-186 | DOI: 10.24425/agp.2021.139307
Keywords Foraminifera Palaeoecology biostratigraphy Turonian Coniacian SE Germany
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Abstract

Upper Turonian to lower Coniacian marls of the Strehlen Formation of the Graupa 60/1 core were investigated for their foraminiferal content to add stratigraphical and palaeoenvironmental information about the transitional facies zone of the Saxonian Cretaceous Basin. Further comparison with foraminiferal faunas of the Brausnitzbach Marl (Schrammstein Formation) were carried out to clarify its relationship to the marls of the Graupa 60/1 core. Tethyan agglutinated marker species for the late Turonian to early Coniacian confirm the proposed age of the marls of the Graupa 60/1 core and the Brausnitzbach Marl. The palaeoenvironment of the marls reflects middle to outer shelf conditions. The maximum flooding zones of genetic sequences TUR6, TUR7 and CON1 could be linked to acmes of foraminiferal species and foraminiferal morphogroups. In general, a rise of the relative sea-level can be recognised from the base to the top of the marls of the Graupa 60/1 core. While agglutinated foraminiferal assemblages suggest a generally high organic matter influx and variable but high productivity in the Graupa 60/1 core, the Brausnitzbach Marl deposition was characterized by moderate productivity and a generally shallower water depth.
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Authors and Affiliations

Richard M. Besen
1
Mareike Achilles
2
Mauro Alivernini
2
Thomas Voigt
2
Peter Frenzel
2
Ulrich Struck
3 4
  1. Freie Universität Berlin, Institut für Geologische Wissenschaften, Malteserstraße 74-100, 12249 Berlin, Germany
  2. Friedrich Schiller University of Jena, Institute of Earth Sciences, Burgweg 11, 07749 Jena, Germany
  3. Freie Universität Berlin, Institut für Geologische Wissenschaften, Malteserstraße 74-100, 12249 Berlin
  4. Museum für Naturkunde Berlin, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Invalidenstrasse 43, 10115 Berlin, Germany

Review of the Cretaceous dinosaurs from India and their paleobiogeographic significance

Ashu Khosla Spencer G. Lucas
Acta Geologica Polonica | 2023 | vol. 73 | No 4 | 707-740 | DOI: 10.24425/agp.2023.145623
Keywords Cenomanian–Turonian Cretaceous dinosaurs India paleobiogeography
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Abstract

The Indian Mesozoic dinosaur record is famous for documenting significant aspects of dinosaur evolution during the Triassic, Jurassic and Cretaceous periods. The Cenomanian–Turonian Nimar Sandstone, Lower Narmada valley, has produced fragmentary skeletal remains of Sauropoda indet. The Maastrichtian Lameta Formation has yielded at least 6 valid sauropod taxa and indeterminate titanosaurid remains, and at least 11 named (but likely oversplit) theropod taxa, i.e., 3 smaller-bodied species and 8 medium-to-large sized theropods. Apart from skeletal remains, Infra- and Intertrappean beds of peninsular India have yielded more than 10,000 dinosaur eggs belonging to 5 oofamilies and 15 oospecies. Most of the Indian ootaxa show distinct affinities with the Late Cretaceous ootaxa of four other continental areas – Spain, France, Argentina and Morocco. The presence of the two dominant oofamilies, Fusioolithidae and Megaloolithidae, in the Infra- and Intertrappean localities of peninsular India and three different continents (South America, Europe and Africa) further shows an ancient Gondwanan affinity and basic terrestrial association among these three landmasses. Based on the phylogenetic analysis of skeletal material, the most plausible pathway of dinosaur dispersal between India and Madagascar took place during the Late Cretaceous. The other conceivable dispersal pathway for the small animals was between India and Asia by means of the Kohistan Dras Volcanic Arc or a northeast pathway through Somalia, while the very large vertebrates, like theropod dinosaurs, may have emerged as a component of a ‘Pan Gondwanan’ model.
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Authors and Affiliations

Ashu Khosla
1
Spencer G. Lucas
2
  1. Department of Geology, Panjab University, Sector-14, Chandigarh-160014, India
  2. New Mexico Museum of Natural History, 1801 Mountain Rd. NW, Albuquerque, NM 87104, USA

Inoceramids and associated ammonite faunas from the uppermost Turonian−lower Coniacian (Upper Cretaceous) of the Anaipadi–Saradamangalam region of the Cauvery Basin, south-east India

Ireneusz Walaszczyk William James Kennedy Amruta R. Paranjape
Acta Geologica Polonica | 2018 | vol. 68 | No 4 | 663–687
Keywords Upper Cretaceous Turonian Coniacian Cauvery Basin SE India Inoceramids Ammonites biostratigraphy Stratigraphic correlation
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Abstract

The lower (but not lowermost) part of the Upper Cretaceous Anaipadi Formation of the Trichinopoly Group in the area between Kulatur, Saradamangalam and Anaipadi, in the south-western part of the Cauvery Basin in southeast India yielded rich inoceramid and ammonite faunas. The ammonites: Mesopuzosia gaudama (Forbes, 1846), Damesites sugata (Forbes, 1846), Onitschoceras sp., Kossmaticeras (Kossmaticeras) theobaldianum (Stoliczka, 1865), Lewesiceras jimboi (Kossmat, 1898), Placenticeras kaffrarium Etheridge, 1904, and Pseudoxybeloceras (Schlueterella) sp., are characteristic of the Kossmaticeras theobaldianum Zone. The absence of Peroniceras (P.) dravidicum (Kossmat, 1895) indicates the presence of only lower part of this zone, referred to the nominative Kossmaticeras theobaldianum Subzone at the localities studied. The inoceramids present are Tethyoceramus madagascariensis (Heinz, 1933) and Cremnoceramus deformis erectus (Meek, 1877), recorded for the first time from the region. The latter dates the studied interval as early early Coniacian, and allows, for the first time, direct chronostratigraphic dating of the Tethyoceramus madagascariensis Zone, and consequently also of the Kossmaticeras theobaldianum Subzone. As inoceramids occur in the middle part of the ammonite-rich interval, the Kossmaticeras theobaldianum Subzone may be as old as latest Turonian and not younger than early early Coniacian. The base of the Coniacian lies in the lower, but not lowermost part of the Anaipadi Formation. Both inoceramids and ammonites represent taxa known from Madagascar and South Africa.

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Authors and Affiliations

Ireneusz Walaszczyk
William James Kennedy
Amruta R. Paranjape

Identification and evolution of the Turonian aquifer case study: Cretaceous basin of Béchar, southwestern Algeria

Sonia Sadat Hamidi Mansour Abderrahmane Mekkaoui Touhami Merzougui
Journal of Water and Land Development | 2020 | No 46 | 190-199 | DOI: 10.24425/jwld.2020.134213
Keywords Cretaceous basin quantitative evolution hydrodynamics piezometers Turonian aquifer
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Abstract

Faced with the challenges of sustainable groundwater resource management in the arid zone, the identification of re-serves and their monitoring have become vital. This paper aims to identify the Turonian aquifer in the Cretaceous Béchar basin, and calculate its transmissivity, permeability and storage coefficient, as well as its evolution over time. This Tu-ronian aquifer is characterized by marine limestones (gentle dip shelters 45° to the North and 5° to 10° to the South). Pumping tests revealed a transmissivity T of 10–4 to 10–2 m2·s–1, a permeability K of 10–6 to 10–4 m·s–1 and a storage coeffi-cient S of approximately 10–3. Two piezometric campaigns, carried out between (1976–2018), show a converging and con-stant flow direction from the North–East to the South–West and from the North–West to the South–East towards the outlet of the basin. Decreased values were observed in the North and South–West borders due to isopiezometric lines. However, this water table is not in a stationary state, it shows seasonal and interannual fluctuations in relation to the variable rainfall and the exploitation rate. In terms of facies, the projection of the two hydrochemical campaigns, during 1976 and 2018 on the Piper diagram, did not show any significant evolution, they are concentrated in the chlorinated and sulphated calcium and magnesium facies.

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Authors and Affiliations

Sonia Sadat
Hamidi Mansour
Abderrahmane Mekkaoui
Touhami Merzougui

A marker band folgen stratigraphy for the Cenomanian Chalk of England and its extension to northen Germany and France

Christopher Vincent Jeans
Acta Geologica Polonica | 2023 | vol. 73 | No 2 | 135-180 | DOI: 10.24425/agp.2023.145616
Keywords Cretaceous Cenomanian chalk Folge stratigraphy Marker bands England Northern Germany Northwest France Cenomanian–Turonian Anoxic Event
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Abstract

A novel stratigraphical scheme within the Folge Concept is described for the Cenomanian Chalk of England that is particularly suitable for investigating the regional changes in the lithofacies, diagenesis, geochemistry, and mineralogy of the sediments of the Chalk Sea leading up to the Cenomanian–Turonian Oceanic Anoxic Event. It is based on “isochronous” marker bands defined largely by calcitic macrofossil assemblages, and it avoids problems caused by the poor or non-preservation of ammonite assemblages and lateral changes in chalk lithofacies. Eight folgen are based on one, two, or more marker bands. Their sequences, lithologies and calcitic macrofossil assemblages are described from 33 exposures in the Northern Chalk Province of England. The folgen are named, in ascending order, the Belchford, Stenigot, Dalby, Bigby, Candlesby, Nettleton, Louth and Flixton, after villages in Lincolnshire and Yorkshire, England. The folgen are traced throughout the Transitional and Southern Chalk provinces of England. They are present in the Cenomanian chalk of northern Germany and northwest France. Regionally, an individual folge may display considerable vertical and lateral variation in general lithology and lithofacies whilst still maintaining their defining marker bands. The possibility of further refinement to the scheme is discussed.
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Authors and Affiliations

Christopher Vincent Jeans
1
  1. Department of Earth Sciences, University of Cambridge, Downing Place, Cambridge CB2 3EN, UK

Redox conditions, glacio-eustasy, and the status of the Cenomanian–Turonian Anoxic Event: new evidence from the Upper Cretaceous Chalk of England

Christophers V. Jeans David S. Wray C. Terry Williams David J. Bland Christopher J. Wood
Acta Geologica Polonica | vol. 71 | No 2 | 103-152 | DOI: 10.24425/agp.2020.134556
Keywords Cretaceous Cenomanian–Turonian Anoxic Event Eustatic lithocycles Glacial associations Redox conditions Cerium anomalies Carbon isotopes NW Europe Japan
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Abstract

The nature of the Cenomanian–Turonian Oceanic Anoxic Event (CTOAE) and its δ13 C Excursion is considered in the light of (1) the stratigraphical framework in which the CTOAE developed in the European shelf seas, (2) conclusions that can be drawn from new detailed investigations of the Chalk succession at three locations in England, at Melton Ross and Flixton in the Northern Province where organic-rich ‘black bands’ are present, and at Dover in the Southern Province (part of the Anglo-Paris Basin) where they are absent, and (3) how these conclusion fit in with the present understanding of the CTOAE. The application of the cerium anomaly method (German and Elderfield 1990) at Dover, Melton Ross and Flixton has allowed the varying palaeoredox conditions in the Chalk Sea and its sediments to be related to the acid insoluble residues, organic carbon, δ18O (calcite), δ13C (calcite), δ13C (organic matter), Fe 2+ and Mn2+ (calcite), and P/TiO2 (acid insoluble residue). This has provided evidence that the initial stages of the δ13C Excursion in England were related to (1) a drop of sea level estimated at between 45 and 85 metres, (2) influxes of terrestrial silicate and organic detritus from adjacent continental sources and the reworking of exposed marine sediments, and (3) the presence of three cold water phases (named the Wood, Jefferies and Black) associated with the appearance of the cold-water pulse fauna during the Plenus Cold Event. Conditions in the water column and in the chalk sediment were different in the two areas. In the Northern Province, cerium-enriched waters and anoxic conditions were widespread; the δ13C pattern reflects the interplay between the development of anoxia in the water column and the preservation of terrestrial and marine organic matter in the black bands; here the CTOAE was short-lived (~0.25 Ma) lasting only the length of the Upper Cenomanian Metoicoceras geslinianum Zone. In the Southern Province, water conditions were oxic and the δ13C Excursion lasted to the top of the Lower Turonian Watinoceras devonense Zone, much longer (~1.05 Ma) than in the Northern Province. These differences are discussed with respect to (1) the Cenomanian–Turonian Anoxic Event (CTAE) hypothesis when the ocean-continent-atmosphere systems were linked, (2) limitations of chemostratigraphic global correlation, and (3) the Cenomanian–Turonian Anoxic Event Recovery (CTOAER), a new term to define the varying lengths of time it took different oceans and seas to recover once the linked ocean-continent-atmosphere system was over. The possibility is considered that glacio- eustasy (the glacial control hypothesis of Jeans et al. 1991) with the waxing and waning of polar ice sheets, in association with the degassing of large igneous provinces, may have set the scene for the development of the Cenomanian–Turonian Anoxic Event (CTAE).
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Authors and Affiliations

Christophers V. Jeans
1
David S. Wray
2
C. Terry Williams
3
David J. Bland
4
Christopher J. Wood
5
  1. Department of Earth Sciences, University of Cambridge, Downing Place, Cambridge, CB2 3EN, UK
  2. School of Science, University of Greenwich, Pembroke, Chatham Maritime, Kent, ME4 4TB, UK
  3. Department of Mineralogy, Natural History Museum, Cromwell Road, London, SW7 5BD, UK
  4. 15 Pains Close, Pinner, Middlesex, HA5 3BN, UK
  5. Deceased

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