DOCSLIB.ORG

G Abhandlungen Der Geologischen Bundesanstalt

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
G Abhandlungen Der Geologischen Bundesanstalt ©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at ABHANDLUNGEN DER GEOLOGISCHEN BUNDESANSTALT G Abh. Geol. B,A. ISSN 0378-08641 ISBN 3-85316-007-7 Band 56/2I |S . 419-438 Wien, Dezember 1999 Geologie ohne Grenzen Redaktion: Festschrift 150 Jahre Geologische Bundesanstalt Harald Lobitzer & Pavol Grecula New data on the Hettangian brachiopod fauna of the Northern Calcareous Alps (Austria, Bavaria) MILOS SIBÜK 15 Text-Figures and 4 Plates Osterreich Bayern Nördliche Kalkalpen Hettang Österreichische Karte Brachiopoden 1:50.000, Blätter 94, 95 Taxonomie Contents Zusammenfassung 419 Abstract 419 1. Introduction 419 2. Localities 420 3. Systematic descriptions 421 4. Conclusion 437 Acknowledgements 437 References 437 Neue Daten zur Brachiopodenfauna des untersten Lias (Hettang) in den Nördlichen Kalkalpen (Österreich, Bayern) Zusammenfassung Von 11 Lokalitäten des untersten Lias der Nördlichen Kalkalpen werden neue Ergebnisse zur Brachiopodenfauna mitgeteilt. Vier Taxa, da­ von eine Gattung und drei Arten, werden neu beschrieben: Saubachia gen. n. inflata sp. n., Homoeorhynchia solitaria sp. n. und Tetrarhynchia inopinata sp. n. Weiters wird die Gattung Grestenella gen. n. aufgestellt mit der Typusart Rhynchonella austriaca SUESS, 1854 aus den Grestener Schichten. Abstract New material of the Hettangian brachiopods is described, and 4 new taxa (Saubachia gen. n. inflata sp. n., Homoeorhynchia solitaria sp. n., and Tetrarhynchia inopinata sp. n.) are established. Moreover, a new genus Grestenella gen. n. is erected for Rhynchonella austriaca SUESS, 1854 from the Gresten Beds. 1. Introduction study confirms this preliminary statement and offers new, more detailed information on this interesting fauna. The attention This paper was preceded by a short review of the Early has been focused on some localities of the Hettangian grey Liassic brachiopods of the Northern Calcareous Alps (SIBÜK, beds - Kendibach Formation - of the Osterhorn block and on 1993), where it was stated that Hettangian brachiopod fauna similar outcrops W of it - localities Eiberg and Ampelsbach in has its own character and importance, and that it differs sub­ Tyrol, and Mittenwald in Bayern ("Grauer Basiskalk" sensu stantially from the younger "Hierlatz-type" fauna. The present FABRICIUS (1966, p. 47) in the Karwendel syncline). Author's address: Dr. MILOS SIBÜK, Geological Institute, Academy of Sciences of the Czech Republic, Rozvojovä 135, 165 00 Praha 6. 419 ©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at GOLEBIOWSKI (1990, p. 179-182 ) studied several Triassic/ 2. Saubachgraben - on western side of Zwölferhorn Jurassic boundary sections in detail, and stated that despite (PLÖCHINGER, 1975; BÖHM, 1992, p. 129). The material comes their appurtenance to different tectonic units they show strong partially from KRYSTYN'S samples S 1/2, S 1/8, S 1/12, S 4/15 lithological and biofacial similarities. He determined the cha­ (= Planorbis Zone, pers. comm.). Kendlbach Beds - grey racteristic terebratulid species from the Lowermost Liassic thin-bedded limestones and marls: Piarorhynchia aff. juvenis beds as Lobothyris sp. or Lobothyris punctata (SOWERBY), and (QUENSTEDT), Saubachia inflata sp. n., Lobothyris delta spiriferid species as Spiriferina cf. walcotti or Spiriferina wal- (NEUMAYR), Zeilleria sp. (? sp. n.). cotti (SOWERBY). This material is determined in the present 3. Hochleitengraben near Gaissau, Salzburg (BÖHM, paper as Lobothyris delta (NEUMAYR) and Spiriferina ex gr. 1992, p. 122, Text-Fig. 44). Kendlbach Formation, brachio­ walcotti (SOWERBY). In the meantime, studies of the Middle and pods come from the grey marls and marly limestones, and Upper Hettangian brachiopods from Steinplatte and Adnet from lower parts of a massive packstone bed with yellow were finished (SIBLI'K, 1993a; SIBÜK in BÖHM et al., 1999). cherts (? Lower Hettangian according to BÖHM): Tetrarhyn- In the following text the characteristic or new Hettangian chia inopinata sp. n., Callospiriferina haueri (SUESS), Zeilleria species are dealt with, badly preserved material and some aff. subnumismalis (DAVIDSON) and Zeilleria sp. (? sp. n.). other finds are only shortly mentioned. Most specimens de­ 4. Glasenbachklamm on southern margin of city of scribed in this publication come from my own samplings and Salzburg (BÖHM, 1992, p. 110): the sample of grey marly li­ these will be deposited partly in the Museum of the mestone (? Kendlbach Beds ) with 3 specimens of Lobothy­ Geological Survey in Vienna, and partly in the Institute of ris delta (NEUMAYR) housed in the Institut für Geologie und Geology and Palaeontology of the University Innsbruck. Paläontologie der Universität Innsbruck. Some other specimens were borrowed for the study from the 5. Eiberg, the quarry S of Kufstein, Tyrol (GOLEBIOWSKI, Institute of Palaeontology, University of Vienna (coll. KRYSTYN 1991). The complete collection was made by GOLEBIOWSKI and GOLEBIOWSKI from Saubachgraben, Ampelsbach, and KRYSTYN in the grey beds (sample no. 34 of Psiloceras Steinplatte and Eiberg) and from the Institute of Geology and johnstoni age, according to KRYSTYN, pers. comm.): Sauba­ Palaeontology, University of Innsbruck (coll. SPIELER). chia inflata sp. n., Spiriferina ex gr. walcotti (SOWERBY), Callo­ Moreover, the specimens of Rhynchonella austriaca SUESS spiriferina haueri {SUESS) and Lobothyris delta (NEUMAYR). from the Gresten Beds (coll. SUESS and ZUGMAYER) housed in 6. Vorderer (Unterer) Ampelsbach N of Achenkirch, Tyrol the Geological Survey and in the Institute of Palaeontology, (HAHN, 1911; QUENSTEDT, 1951). Some specimens come University of Vienna were at disposal for the comparison with from KRYSTYN'S sample no. 84/5/6 (Planorbis Zone, KRY­ my rhynchonellid material. Based on these old collections STYN'S pers. comm.). Grey limestones with sandy admixture only, a new genus Grestenella gen. n. was established. ("Grestener Fazies" in QUENSTEDT, 1951) and marls with pe- lecypods yielded: Tetrarhynchia inopinata sp. n., Callospiri­ ferina haueri (SUESS), Lobothyris andleri (OPPEL), Zeilleria 2. Localities perforata (PIETTE), Zeilleria sp.(? sp. n.). 7. Mittenwald - "Marmor Graben" on the right bank of the In the present paper described brachiopod fauna comes Isar, NE of Mittenwald, Bavaria (ULRICH, 1960; FABRICIUS, from the following localities (localities 1-7 are developed in 1966, Text-Fig. 19). The greyish and rusty-brown marls and the Lower Hettangian grey facies; brachiopods from the lo­ higher up also thin-bedded marly limestones belong accor­ calities 10 and 11 are listed only): ding to SPIELER (pers. comm.) to the uppermost parts of the 1. Breitenberg - SW of St. Wolfgang, Salzkammergut Tiefengraben Member and to the lowermost parts of the (SUESS & MOJSISOVICS, 1868; NEUMAYR, 1879; BLIND, 1963; Breitenberg Member. The limestones just underlying the bed BÖHM, 1992, p. 131). Grey limestones and marls of the with psiloceratids yielded: Piarorhynchia aff. juvenis Planorbis Zone with rich pelecypod fauna yielded: "Rhyn­ (QUENSTEDT), Saubachia inflata sp. n. and Lobothyris andleri chonella" sp., Liospiriferina cf. pichleri (NEUMAYR), Lobothyris (OPPEL). delta (NEUMAYR), Zeilleria sp. (? sp. n.). Overlying yellowish- 8. Steinplatte - Kammerköhralm area, Salzburg, near brown micrites (Megastoma Zone according to KRYSTYN, Waidring (RAKÜS & LOBITZER, 1993, Text-Figs. 4-5).Two bra­ pers. comm., his sample 91/126) contained Zeilleria aff. ba- chiopod specimens coming from the "Cardinia" coquina, tilla (GEYER) (PI. 3, Fig. 7). NNE of the Steinplatte top (1869 m) were at disposal only (coll. KRYSTYN, his sample no. 11 = Megastoma Zone, pers. comm.): Homoeorhynchia solitaria sp. n. 1L 9. Fonsjoch W of Achensee, Tyrol (VORTISCH, 1926; ,l# " LANGE, 1952; BLIND, 1963). Variegated - yellow, ochreous I \ and red - compact micritic limestones. The brachiopods are «? ' STEINB rare, coming mostly from the Megastoma Zone (according to SAUBACHGRABEN # *CHGRABEN r jl Salzburg \- SPIELER, pers. comm.): Calcirhynchia (?) cf. plicatissima GLAS (QUENSTEDT), Lobothyris andleri (OPPEL) and Zeilleria sp. LWIIII *CH? S BREITENBERG ENB .HiiinjiU *"[?> HOCHLEITENGRABEN 10. Christlumkopf. The locality is situated about 350 m AMPELSBACH-1 "'•'J t STEINPLATT SW of Christlumkopf (1758 m), SW of Achenkirch, Tyrol, and J^«ITTENWALbLLli'«• MKOPF E«L Ij!' can be well reached from the Moosenalm. About 40 cm thick NllllJUJA «VHRISTLU IJ-U-* (J, FONSJOCH bed of red biomicritic and crinoid-bearing limestones under­ o lying Adnet Limestone yielded the brachiopod fauna very si­ Innsbruck milar to that of Marmorea Zone of Steinplatte described by ß SIBLI'K (1993a), and most probably of the same age (SPIELER, nfflTrflTnrmifflU pers. comm.): Prionorhynchia greppini (OPPEL), Homoeo­ 1 ,TALIA rhynchia (?) prona (OPPEL), Piarorhynchia aff. juvenis (QUEN­ J lit STEDT) (PI. 2, Fig. 6), Cuneirhynchia retusifrons (OPPEL), Text-Fig. 1. Hettangian localities referred to in the text. 420 ©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at Liospiriferina cf. obtusa (OPPEL), Linguithyris aspasia tifrons GEYER (1889, PI. 6, Figs. 25-31) differing by the (ZITTEL), Linguithyris sp., Bakonyithyris apenninica (ZITTEL) character of umbonal parts, and in Rhynchonella zugmay- and Zeilleha mutabilis (OPPEL). eri GEMMELLARO (1878, PI. 31, Figs. 50-60). 11. Steinbachgraben - Langbath Zone, SW of Neukir- The sectioned flat, most probably conspecific specimen chen, Upper Austria (SIBÜK, 1993, 1997). The locality was has the following inner characters: Lateral umbonal
Load more

Recommended publications
  • The Global Stratotype Sections and Point (GSSP) for the Base of the Jurassic System at Kuhjoch (Karwendel Mountains, Northern Calcareous Alps, Tyrol, Austria)
    162 162 Articles by Hillebrandt, A.v.1, Krystyn, L.2, Kürschner, W.M.3, Bonis, N.R.4, Ruhl, M.5, Richoz, S.6, Schobben, M. A. N.12, Urlichs, M.7, Bown, P.R.8, Kment, K.9, McRoberts, C.A.10, Simms, M.11, and Tomãsových, A13 The Global Stratotype Sections and Point (GSSP) for the base of the Jurassic System at Kuhjoch (Karwendel Mountains, Northern Calcareous Alps, Tyrol, Austria) 1 Institut für Angewandte Geowissenschaften, Technische Universität, Ernst-Reuter-Platz 1, 10587 Berlin, Germany. E-mail: [email protected] 2 Department for Palaeontology, Vienna University, Geozentrum, Althansstr. 9, A-1090 Vienna, Austria. E-mail: [email protected] 3 Department of Geosciences and Centre of Earth Evolution and Dynamics (CEED), University of Oslo, PO box 1047, Blindern, 0316 Oslo, Norway. E-mail: [email protected] 4 Shell Global Solutions International B.V., Kessler Park 1, 2288 GS, Rijswijk, the Netherlands. E-mail: [email protected] 5 Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK. E-mail: [email protected] 6 Commission for the Palaeontological and Stratigraphical Research of Austria, Austrian Academy of Sciences c/o Institut of Earth Sciences, Graz University, Heinrichstraße 26, 8010 Graz, Austria. E-mail: [email protected] 7 Staatliches Museum für Naturkunde, Rosenstein 1, 70191 Stuttgart, Germany. E-mail: [email protected] 8 Department of Earth Sciences, University College London, Gower Street, London WC1E 6BT, UK. E-mail: [email protected] 9 Lenggrieser Str.
    [Show full text]
  • Talexirhynchia, a New Rhynchonellid Genus from the Jurassic Ethiopian Province of Jordan
    Talexirhynchia, a new rhynchonellid genus from the Jurassic Ethiopian Province of Jordan Howard R. Feldman, Mena Schemm- Gregory, Mark A. Wilson & Fayez Ahmad Paläontologische Zeitschrift Scientific Contributions to Palaeontology ISSN 0031-0220 Paläontol Z DOI 10.1007/s12542-013-0216-y 1 23 Your article is protected by copyright and all rights are held exclusively by Springer- Verlag Berlin Heidelberg. This e-offprint is for personal use only and shall not be self- archived in electronic repositories. If you wish to self-archive your article, please use the accepted manuscript version for posting on your own website. You may further deposit the accepted manuscript version in any repository, provided it is only made publicly available 12 months after official publication or later and provided acknowledgement is given to the original source of publication and a link is inserted to the published article on Springer's website. The link must be accompanied by the following text: "The final publication is available at link.springer.com”. 1 23 Author's personal copy Pala¨ontol Z DOI 10.1007/s12542-013-0216-y RESEARCH PAPER Talexirhynchia, a new rhynchonellid genus from the Jurassic Ethiopian Province of Jordan Howard R. Feldman • Mena Schemm-Gregory • Mark A. Wilson • Fayez Ahmad Received: 30 May 2013 / Accepted: 28 November 2013 Ó Springer-Verlag Berlin Heidelberg 2013 Abstract A new genus and species of a rhynchonellide scattered on a limy substrate, such as shells and rocks, brachiopod from the Jurassic of Jordan, Talexirhynchia could have served as an attachment site for juveniles. With kadishi gen. et sp. nov., is described.
    [Show full text]
  • Paléobiologie
    REVUE DE VOLUME 35 (2 ) – 2016 PALÉOBIOLOGIE Une institution Ville de Genève www.museum-geneve.ch Revue de Paléobiologie, Genève (décembre 2016) 35 (2): 385-416 ISSN 0253-6730 Die Brachiopoden der Klippendecke (Préalpes médianes) in den Préalpes romandes der Südwestschweiz, des Chablais und der zentralschweizerischen Klippen: eine Übersicht und paläogeographische Beziehungen Heinz SULSER Paläontologisches Institut und Museum der Universität Zürich, Karl Schmid-Str. 4, CH-8006 Zürich. E-Mail: [email protected] Zusammenfassung Die Kenntnis der Brachiopoden der Préalpes romandes in der Südwestschweiz (Kantone Bern, Freiburg und Waadt), des fränzösi- schen Chablais und der Klippenregion der Zentralschweiz beruht zum grossen Teil auf den klassischen Arbeiten früherer Autoren. Die Brachiopoden kommen fast ausschliesslich in der Klippendecke (Préalpes médianes) vor. Die Klippendecke besteht aus einer nahezu lückenlosen Abfolge von mesozoischen Sedimenten. In fast allen stratigraphischen Stufen kommen Brachiopoden vor, doch mit unter- schiedlicher Häufigkeit und Frequenz. In der vorliegenden Arbeit werden über 60 Arten der Ordnungen Rhynchonellida, Spiriferinida und Terebratulida diskutiert. Zwei neue Arten (Septaliphoria felberi nov. sp., Aulacothyris maendlii nov. sp.) aus dem Dogger der My- then werden beschrieben. Obwohl die von älteren Autoren aufgestellten Arten neu untersucht und teilweise revidiert werden müssen, ist der besondere Charakter dieser Brachiopoden offensichtlich. In der Trias lassen sich die Brachiopoden mit Vorkommen in ganz Europa vergleichen. Im späten Dogger und Malm zeigen sich deutliche Analogien zu Formen der Ost- und Südalpen. Die Brachiopoden der Mytilus-Schichten sind eher endemisch. Im frühen und mittleren Lias erscheint eine gemischte Fauna mit Arten aus Jura und Alpen. Diese Affinitäten passen recht gut in den gegebenen tektonischen Rahmen: nach der Trennung des Kontinents Pangaea in einen euro- päischen Nord- und afrikanischen Südteil am Ende der Trias entstanden in der Bruchzone Mikrokontinente (Ostalpen, Briançonnais).
    [Show full text]
  • Diversity Dynamics of Early–Middle Jurassic Brachiopods of Caucasus, and the Pliensbachian–Toarcian Mass Extinction
    Diversity dynamics of Early–Middle Jurassic brachiopods of Caucasus, and the Pliensbachian–Toarcian mass extinction DMITRY A. RUBAN Ruban, D.A. 2004. Diversity dynamics of Early–Middle Jurassic brachiopods of Caucasus, and the Pliensbachian– Toarcian mass extinction. Acta Palaeontologica Polonica 49 (2): 275–282. Taxonomic diversity of NW Caucasus brachiopods changed cyclically in the Early–Middle Jurassic. Diversifications took place in the Late Sinemurian–Early Pliensbachian, Middle–Late Toarcian and Late Aalenian–Early Bajocian, while diversity decreases occured in Late Pliensbachian–Early Toarcian, Early Aalenian and Late Bajocian. Outstanding diver− sity decline in the Late Pliensbachian–Early Toarcian corresponds to a global mass extinction interval, whose peak has been documented in the Early Toarcian. Similar diversity changes of brachiopods are observed in other Tethyan regions, including the well−studied Bakony Mountains, although in NW Caucasus the recovery after demise have begun earlier. The causes of Pl−To mass extinction in the studied region are enigmatic. Probably, it could be linked to anoxia, but its cor− respondence to the beginning of transgression is not coincident with the global record, so eustatic causes seem to be doubtful for this region. Key words: Brachiopoda, taxonomic diversity, mass extinction, Jurassic, Caucasus, Russia. Dmitry A. Ruban [ruban−[email protected]], Geology−Geography Faculty, Rostov State University, Zorge st., 40, Rostov−na− Donu, 344090, Russia; correspondence address: Tchistopolskaja st., 3, App. 10, Rostov−na−Donu, 344032, Russia. Introduction Every mass extinction should be studied both using com− parative global and regional data analyses to understand The Late Pliensbachian–Early Toarcian (Early Jurassic) mass better its appearance in geological time and space.
    [Show full text]
  • Abhandlungen Der Geologischen Bundesanstalt in Wien
    ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Abhandlungen der Geologischen Bundesanstalt in Wien Jahr/Year: 2010 Band/Volume: 65 Autor(en)/Author(s): Siblik M. Artikel/Article: Catalogue of the Triassic and Lower Jurassic Brachiopod Holotypes (excl. Bittner) in the Collections of the Geological Survey of Austria 65-75 ©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at ABHANDLUNGEN DER GEOLOGISCHEN BUNDESANSTALT Abh. Geol. B.-A. ISSN 0378-0864 ISBN 978-3-85316-058-9 Band 65 S. 65–75 Wien, 10. 11. 2010 Fifty Years of Geological Cooperation between Austria, the Czech Republic and the Slovak Republic Catalogue of the Triassic and Lower Jurassic Brachiopod Holotypes (excl. Bittner) in the Collections of the Geological Survey of Austria MiloŠ siblík* 3 Plates Geological Survey of Austria Paleontological Collection Type Specimens Brachiopoda Eastern Alps Mesozoic Contents Zusammenfassung . 65 Abstract . 65 Introduction . 65 List of Type Specimens . 66 Triassic . 66 Lower Jurassic . 67 Holotypes Previously Held or Reported by the Authors as Deposited in the Collection of the Geological Survey, but now Missing. 68 Triassic . 68 Lower Jurassic . 68 Index of Specific Names . 68 Acknowledgements . 69 References . 69 Plates . 70 Katalog der triassischen und unterjurassischen Brachiopoden-Holotypen (exkl. Bittner) in den Sammlungen der Geologischen Bundesanstalt in Wien Zusammenfassung Diese Arbeit ergänzt den ersten Teil des Katalogs der triassischen und unterjurassischen Brachiopoden-Holotypen (SibLík, 2010) und umfasst die zusätz- lich zu den von Bittner im ersten Katalogteil beschriebenen 19 weiteren Holotypen. Sie werden in den Sammlungen der Geologischen Bundesanstalt in Wien aufbewahrt. Abstract This paper follows the first part of the catalogue of the Triassic and Lower Jurassic brachiopod holotypes (SibLík, 2010) and offers the inventory of the 19 Triassic and Lower Jurassic brachiopod holotypes (excl.
    [Show full text]
  • Annual Meeting 2010
    The Palaeontological Association 54th Annual Meeting 17th–20th December 2010 Ghent University PROGRAMME and ABSTRACTS Palaeontological Association 2 ANNUAL MEETING ANNUAL MEETING Palaeontological Association 1 The Palaeontological Association 54th Annual Meeting 17th–20th December 2010 Department of Geology and Soil Sciences, Ghent University (Belgium) In collaboration with the Department Géosystèmes of the University of Lille 1 (France), the University of Namur (Belgium) and the Royal Belgian Institute of Natural Sciences The programme and abstracts for the 54th Annual Meeting of the Palaeontological Association are outlined after the following summary of the meeting. Venue The conference will take place at two of Ghent University’s conference venues in the historical city centre of Ghent. The ‘Aula’ is the University’s official ceremonial hall, and will be the venue for the palaeoclimate thematical symposium and reception on Friday (address: Volderstraat 9, 9000 Ghent). The second venue, ‘Het Pand’, is the University’s official conference centre, and will be the site for the scientific sessions on Saturday and Sunday (address: Onderbergen 1, 9000 Ghent; see circulars for maps). Accommodation Delegates must make their own arrangements for accommodation. Rooms were reserved for the conference in a variety of hotels at a range of prices and within easy reach of the venues up until 30th October. Some likely will still be available in these establishments, although this can no longer be guaranteed. Rooms there and elsewhere can be booked using the links on the Annual Meeting pages on the Association’s website (<http://www.palass.org/>). We also suggest using <http://www.visitgent.be/> to explore all further possibilities.
    [Show full text]
  • Evidence for a Stratigraphic Basis for the Anthropocene
    Evidence for a Stratigraphic Basis for the Anthropocene Colin N. Waters, Jan Zalasiewicz, Mark Williams, Simon J. Price, Jon R. Ford and Anthony H. Cooper Abstract The Anthropocene was proposed as a term (Crutzen and Stoermer 2000) before consideration was given to the nature of the key signatures, contrasting with standard procedures for defining such units. The term is being widely used in both popular and scientific publications before a decision is made as to whether it warrants formalisation and definition of a Global Stratigraphic Section and Point (GSSP). The deliberate human modification of the landscape and its subsurface, and the creation of human-generated novel sedimentary deposits, minerals, and landforms, are characteristic features of the development of Earth’s surface and near surface, which has accelerated in the past two centuries. The large-scale intentional excavation, transportation, and deposition of mixtures of rock and soil to form anthropogenic deposits and landforms represent a new geological process that could be used as a diagnostic signature of the Anthropocene. Keywords Anthropocene Á Stratigraphy Á Anthropogenic deposits Stratigraphic Issues Related to Anthropogenic Deposits The ground surface and deposits immediately beneath are an open system prone to modification through urban redevelopment, agricultural ploughing, and soil for- mation. This system may be the product of several phases of ongoing evolution and therefore dating this interval is problematic. The history of excavation in C. N. Waters (&) Á S. J. Price Á J. R. Ford Á A. H. Cooper British Geological Survey, Environmental Science Centre, Keyworth, Nottingham NG12 5GG, UK e-mail: [email protected] J.
    [Show full text]
  • Benthic Macroinvertebrate Associations on a Carbonate-Clastic Ramp in Segments of the Eany Jurassic Back-Arc Basin of Northem Chile (26-290 S)
    Benthic macroinvertebrate associations on a carbonate-clastic ramp in segments of the Eany Jurassic back-arc basin of northem Chile (26-290 S) Martin Aberhan Inslllut IOr PaJiontologle dar UnlverslUlt, PlelcherwaJl 1, 0-97070 W:lrzburg, Germany ABSTRACT The distriblllion of facies and benthic fauna in segments of the marine Eariy Jurassic Andean Basin c·f northem Chile has been reconstructed based on sedimentological, taphonomic, and paleoecologicalevidence. In the areas studied, that is between Salar de Pedernales (26°S) and El Tránsito (29°S), the depositional system is interpreted as a h:>moclinal ramp, on which fourerwironmentaJ subdivisions can be distinguished: shallow siliciclastic ramp, mixed siliciclastic-carbonate ramp, midd/e carbona:e ramp, and deep carbonate rampo In an offshore direction, they reflect a general decrease in terrigenous sediment input, anergy level, grain-size, and oxygen supply, and a relative increase in carbonate production. More than 200 bulk collections of benthic macroinvertebrates, dominated by bivalves and brachiopods, were grouped into 27 associations (1-27) and 3 assemblages (E,F,G) by means of a O-mode cluster-analysis. Most associations are restricted to a single environmental subdivision and therefore proved to be useful indicators of generalenvironmental conditions and bathymetry. This is also true for guild-assemblages. Higher numbers of dominant guilds and a relatively broad guild-spectrum within highly-diverse associations are found in the more onshore settings. Due to a stable and consolidated substraie, on!he middle carbonate ramp only pedunculate brachiopods and epifaunal bivalves could gain high abundances in associations of moderate diversity. An even higher dominance of only a few guilds is found on the oxygen-controlled deep rampoTypical representatives of low-diversity associations were deposit-feeding nuculid bivalves in the upper dysaerobi:: biofacies zone and small, flat-'valved pectinacean bivalves in the lower dysaerobic zone.
    [Show full text]
  • Jurassic Rhynchonellids Internal Structures and Taxonomic Revisions SERIES PUBLICATIONS of the SMITHSONIAN INSTITUTION
    SV Jurassic Rhynchonellids Internal Structures and Taxonomic Revisions SERIES PUBLICATIONS OF THE SMITHSONIAN INSTITUTION Emphasis upon publication as a means of "diffusing knowledge" was expressed by the first Secretary of the Smithsonian. In his formal plan for the institution, Joseph Henry outlined a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge." This theme of basic research has been adhered to through the years by thousands of titles issued in series publications under the Smithsonian imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Contributions to Anthropology Smithsonian Contributions to Botany Smithsonian Contributions to the Earth Sciences Smithsonian Contributions to the Marine Sciences Smithsonian Contributions to Paleobiology Smithsonian Contributions to Zoology Smithsonian Folklife Studies Smithsonian Studies in Air and Space Smithsonian Studies in History and Technology In these series, the Institution publishes small papers and full-scale monographs that report the research and collections of its various museums and bureaux or of professional colleagues in the world of science and scholarship. The publications are distributed by mailing lists to libraries, universities, and similar institutions throughout the world. Papers or monographs submitted for series publication are received by the Smithsonian Institution Press, subject to its own review for format and style, only through departments of the various Smithsonian museums or bureaux, where the manuscripts are given substantive review. Press requirements for manuscript and art preparation are outlined on the inside back cover.
    [Show full text]
  • Early Jurassic)
    The Impact of Global Warming and Anoxia on Marine Benthic Community Dynamics: an Example from the Toarcian (Early Jurassic) Silvia Danise1*, Richard J. Twitchett1, Crispin T. S. Little2, Marie-Emilie Cle´mence1 1 School of Geography, Earth and Environmental Sciences, Plymouth University, Plymouth, United Kingdom, 2 School of Earth and Environment, University of Leeds, Leeds, United Kingdom Abstract The Pliensbachian-Toarcian (Early Jurassic) fossil record is an archive of natural data of benthic community response to global warming and marine long-term hypoxia and anoxia. In the early Toarcian mean temperatures increased by the same order of magnitude as that predicted for the near future; laminated, organic-rich, black shales were deposited in many shallow water epicontinental basins; and a biotic crisis occurred in the marine realm, with the extinction of approximately 5% of families and 26% of genera. High-resolution quantitative abundance data of benthic invertebrates were collected from the Cleveland Basin (North Yorkshire, UK), and analysed with multivariate statistical methods to detect how the fauna responded to environmental changes during the early Toarcian. Twelve biofacies were identified. Their changes through time closely resemble the pattern of faunal degradation and recovery observed in modern habitats affected by anoxia. All four successional stages of community structure recorded in modern studies are recognised in the fossil data (i.e. Stage III: climax; II: transitional; I: pioneer; 0: highly disturbed). Two main faunal turnover events occurred: (i) at the onset of anoxia, with the extinction of most benthic species and the survival of a few adapted to thrive in low-oxygen conditions (Stages I to 0) and (ii) in the recovery, when newly evolved species colonized the re-oxygenated soft sediments and the path of recovery did not retrace of pattern of ecological degradation (Stages I to II).
    [Show full text]
  • Newsletter 34/1
    ISJS Newsletter 34 (1), 2007 International Subcommission on Jurassic Stratigraphy Newsletter 34 (1) Edited by Paul Bown, Nicol Morton, Jackie Lees July, 2007 Contents 1 Chairman’s report Nicol Morton New and updated proposals: 2 A candidate GSSP for the base of the Jurassic in the Northern Calcareous Alps (Kuhjoch section, Karwendel Mountains, Tyrol, Austria) A. von Hillebrandt, L. Krystyn, W.M. Kuerschner, with contributions from P.R. Bown, C. McRoberts, M. Ruhl, M. Simms, A. Tomasovych, M. Urlichs 21 The Triassic-Jurassic transition at Kunga Island, Queen Charlotte Islands, British Columbia, Canada L.M. Longridge, E.S. Carter, J.W. Haggart, P.L. Smith 34 Updated proposal for Global Stratotype Section and Point for the base of the Jurassic System in the New York Canyon area, Nevada, USA S.G. Lucas, D.G. Taylor, J. Guex, L.H. Tanner, K. Krainer 43 A proposal for the base Hettangian Stage (= base Jurassic System) GSSP at New York Canyon (Nevada, USA) using carbon isotopes C.A. McRoberts, P.D. Ward, S. Hesselbo 50 Waterloo Bay, Larne, Northern Ireland: a candidate Global Stratotype Section and Point for the base of the Hettangian Stage and Jurassic System M.J. Simms, A.J. Jeram 69 Triassic-Jurassic Working Group Members - revised ISJS Newsletter 34 (1), 2007, p.1 1 Chairman’s report Nicol Morton Le Chardon, Quartier Brugière, 07200 Vogüé, France; [email protected] This issue of the ISJS Newsletter is devoted entirely to the arrange for the (electronic) publication of an ISJS Triassic/Jurassic (T/J) boundary and the definition of the Newsletter as soon as possible in the Spring of 2007.
    [Show full text]
  • Some Early Jurassic Brachiopod Faunas from Slovenia Nekaj Spodnjejurskih Brahiopodnih Favn Iz Slovenije
    167 Original scientific paper Received: September 30, 2014 Accepted: October 15, 2014 Some Early Jurassic brachiopod faunas from Slovenia Nekaj spodnjejurskih brahiopodnih favn iz Slovenije Katarina Pavla Anko Corresponding author. E-mail: [email protected] Abstract Izvleček The article brings a review of the Early Jurassic bra- Prispevek prinaša pregled spodnjejurskih brahiopo- chiopods from two neighbouring carbonate platforms, dov s sosednjih karbonatnih platform, Julijske in Di- the Julian and the Dinaric. It is based on the previously narske. Temelji na predhodno objavljenih podatkih, published data supplemented by the author's study of some newly collected fossils. The new brachiopod spec- fosilov. Novi primerki brahiopodov so bili preiskani z ki jih dopolnjuje avtoričina raziskava novonabranih imens were serially sectioned, but the quality of their preservation was generally not good. For this reason, dobro ohranjena. To je tudi razlog, da prisotnost pli- metodo zaporednih odbrusov, a jih večina žal ni bila the presence of the Pliensbachian genus Livarirhynchia ensbachijskega rodu Livarirhynchia in toarcijskega and the Toarcian genus Soaresirhynchia on the Dinaric rodu Soaresirhynchia na robu Dinarske karbonatne Carbonate Platform margin still lacks a confirmation platforme še ni podprta z dokazi ustreznih notranjih by the appropriate internal structures. The brachio- struktur. Brahiopodna diverziteta in distribucija sta bili pod diversity and distribution were mainly controlled pogojeni predvsem s sedimentacijskimi in tektonskimi by sedimentary and tectonic paleoenvironments. The paleookolji. Morfologija mnogih predtoarcijskih brahi- morphology of many Mediterranean-type pre-Toarcian opodov mediteranskega tipa je bila posebej primerna brachiopods was particularly suitable for the setting of za okolje faciesa hierlaškega tipa, ki je bilo omejeno na the Hierlatz-type facies limited to the Julian Carbonate Julijsko karbonatno platformo.
    [Show full text]