DOCSLIB.ORG

Barremian Ammonite Zonation in the Carpathian Area

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Barremian Ammonite Zonation in the Carpathian Area © Biodiversity Heritage Library, http://www.biodiversitylibrary.org/; www.zobodat.at 509 Zitteliana 10 509-514 München, 1. Juli 1983 ISSN 0373-9627 Barremian ammonite zonation in the Carpathian area By EMIL A VRAM*) With 1 table ABSTRACT The Romanian rich ammonitic material collected from the a) with Heinzia provincial, having a thin level with An- Barremian stage interval allowed to propose a more detailed cyloceras mojsisovici in its upper part zonal scheme, as follows: b) with “Crioceratites” ex gr. barremense-orbignyi c) with Imerites giraudi and Eristavia dicbotoma Lower Barremian: d) unnamed, at the top of the Barremian interval (but ha­ 1. Pseudotburmannia picteti zone (range zone), with ving representatives of Parancyloceras ? sp. as the only P. pseudomalbosi and P. belimelensis only in its lower possible index fossil). part and with P. angulicostata and P. catulloi in its upper The Pseudothurmanniapicteti zone is considered to belong part. to the Barremian stage because its base is an important evolu­ 2. Holcodiscus cailLiudianus zone (range zone), comprising tionary threshold by the first apparition of the genera Pseudo­ two subzones: thurmannia, Paraspiticeras and Psilotissotia. a) with Pulchellia changarnieri The Barremian-Aptian boundary is accepted to be at the le­ b) with Pulchellia compressissima, vel where, together with the last specimens of Silesites serano­ the latter having in its whole interval numerous Lepto- nis, the appearance of Pseudohaploceras matheroni and also ceras and, at the top, a level with Torcapella suessi. of the first representatives of the genus Neohibolites was re­ corded. Upper Barremian 3. Silesites seranonis zone (partial range zone) with four sub­ zones: KURZFASSUNG Reiche Ammonitenfunde im Barreme Rumäniens erlauben Ober-Barreme: den Vorschlag einer detaillierten Zonengliederung: 3. Silesites seranonis Zone (Partial Range Zone) mit.4 Subzo­ nen: Unter-Barreme: a) mit Heinzia provtncialis, im oberen Teil mit einer dün­ 1. Pseudothurmannia picteti Zone (Range-Zone) nen Lage mit Ancyloceras mojsisovici; mit P. pseudomalbosi und P. belimelensis nur im unteren b) mit “Crioceratites” ex gr. barremense-orbignyi; Teil und mit P. angulicostata und P. catulloi im oberen c) mit Imerites giraudi und Eristavia dichotoma; Teil. d) unbenannt, im obersten Teil des Barreme, mit Vertre­ Parancylocerasf 2. Holcodiscus caillaudianus Zone (Range-Zone), mit 2 Sub­ tern von sp. als den einzigen mögli­ zonen: chen Indexfossilien. a) mit Pulchellia changarnieri; Die Pseudothurmannia picteti Zone wird in die Barreme- b) mit Pulchellia compressissima; Stufe gestellt, da sich im unteren Teil dieser Zone wichtige letztere enthält zahlreiche Vertreter von Leptoceras und Entwicklungsschritte vollziehen durch das Ersterscheinen im oberen Teil eine Lage mit Torcapella suessi. der Gattungen Pseudothurmannia, Paraspiticeras und Psilo­ tissotia. Die Grenze Barreme-Apt wird unter der Lage mit den letz­ ten Formen von Silesites seranonis, dem Erscheinen von *) E. A vram , Institute of Geology and Geophysics, str. Caransebe§ Pseudohaploceras matheroni und den ersten Vertretern der nr. 1, Bucure§ti, 78344, Romania. Gattung Neohibolites fixiert. 510 © Biodiversity Heritage Library, http://www.biodiversitylibrary.org/; www.zobodat.at INTRODUCTION The Romanian outcrops of the Lower Cretaceous deposits T ietze (1872), Simionescu (1898),V adasz (1911), Kiss (1911), are the richest in ammonites within the Barremian stage inter­ O ncescu (1943), R aileanu (1953), StefA nescu , A \ ram & val. The main fossiliferous areas at this level are already well StefA nescu (1965), P atrulius (1952, 1969), K usko & Savu known: Dimbovicioara Couloir in the southern part of the (1970), P atrulius & A vram (1976), A vram (1976, 1980); other East Carpathians and Svinitsa region, on the Danube, in Ba­ ones are now in preparation. nat (SW Romania). Besides them, there are some others in the These studies, especially the recent ones, allowed to pro­ inner part of the Carpathian flysh: Prahova, Doftana and Tir- pose a more detailed ammonite zonation of the Barremian lung valleys, Baraolt Mts., etc., where the Barremian deposits stage, partly different from the others published in the last offered also useful data for a discussion about the ammonite years (Busnardo , 1965; Dimitrova , 1966; K otetishvili , 1970; assemblages at various levels of this stage. Breskovski , 1973; V ermeulen , 1974; Drushchits & G orba - Some paleontological or biostratigraphical studies about chik , 1978; V a SiCek , 1979). the Barremian deposits from these regions are published: 1. THE LOWER AND UPPER BOUNDARIES OF THE BARREMIAN STAGE In spite of the general acception of the Hauterivian-Barre- It is to notice that the same association: Pseudothurmannia mian boundary at the top of the Pseudothurmannia zone, - Paraspiticeras - Crioceratites emerici was found in Bulgaria there are some recent authors (Drushchits , 1960; P atrulius , by Breskovski (1973) and that Lapeyre & T homel (1974) re­ 1969; Breskovski , 1973; Patrulius & A vram , 1976, A vram , cognised in the beds with Pseudothurmannia angulicostata 1976 and, partly, L apeyre & T homel , 1974) which include (d’ORB.) also Crioceratites emerici and Psilotissotia favrei this zone in Barremian, thus coming back to the first deffini- (O oster ). tion of the stage (C oquand , 1861). The upper boundary of the Barremian stage is very difficult We consider also this point of view to be more acceptable, to establish in Romania because at this level the ammonitic as­ based on two facts: semblage is very poor. In these conditions we consider this 1. The first apparition at this level of the genera Pseudothur­ boundaiy as in France (Busnardo , 1965; Fabre -T axy et ah, mannia, Psilotissotia and Paraspiticeras (first representa­ 1965; M oullade , 1966), immediately under the first level tives of the family Hemihoplitidae, Pulchelliidae and with Pseudobaploceras matberoni (d’ORB.) and Procheloni- Douvilleiceratidae), then on a remarquable evolutionary ceras spp. Between this level and that with the first Deshay esi- threshold in the ammonite evolution. tes there is (as in France, too), a relatively thick sequence of 2. The existence of the typical specimens of Crioceratites strata wherein the only evolutionary feature is the first appari­ tion of the genus Neobibolites (fide Patrulius & A vram , em end L£v. (one of the first index fossils of the Lower 1976). Barremian) below the first beds with Pseudothurmannia. 2. THE BARREMIAN AMMONITE ZONATION IN ROMANIA The here below proposed zonation is mainly based by the d ’ORB., Psilotissotia favrei (O oster ), Paraspiticeras gueri- data obtained in Dimbovicioara Couloir (Patrulius & A v ­ nianum (d’ORB.), P. pachycyclum (U hlig ), m any Phyllopa- ram , 1976, revised) and Svinitsa region (A vram , 1976, revi­ cbyceras spp., Protetragonites crebrisulcatus (U hi .ig ), Mel- sed), where the rich ammonite fauna was collected bed by bed chiorites spp., etc. and, only at the base, Acnoceras seringei through the whole Barremian set of deposits. Three zones, (A stier) and Paraspinoceras pulcherrimum (d’ORB.). two of them devided into 2 and, respectively, 4 subzones were 2. Holcodiscus caillaudianus zone (range zone) is compri­ identified, as follows: sing the largest part of the Lower Barremian and within its in­ I . Pseudothurmannia picteti zone (range zone), in Svinitsa terval there are two subzones: region characterised by a rich assemblage, has Pseudothur- a) Pulchellia changamieri subzone, with Lytoceraspueza- mannta picteti Sarkar within its whole interval, Pseudo­ num H aug , Hamulina astieriana cf., H. alpina, Criocerati­ thurmannia cf. pseudomalbosi (Sar . & Schond .) and P. cf. tes ex gr. emerici Lev ., Spitidiscus vandeckii (d’ORB.), belimelensis Dimitrova only in its lower part, and Pseudo­ S. oosteri (Sar . & Schond .), Holcodiscus caillaudianus thurmannia cf. angulicostata (d’ORB.), P. catulloi (Paro - (d’ORB.), Psilotissotia favrei (its last apparition, only in Svi­ na ), P. biassalensis Dimitrova only in its upper part. In Dim­ nitsa), Pulchellia changamieri Sayn , Subpulchellia sauvage- bovicioara Couloir we recognised Pseudothurmannia cf. pic­ aui (H frm.), Nicklesia aff. karsteni (U hlig ), Silesites fcon- teti, P. aff. mortilleti (Pier. & Lor .) and P. grandis Busn ., cretus K ar . without any possibility for a subzonation. The other species b) Pulchellia compressissima subzone is comprising also of the zone are: Hamulina astieriana d ’ORB., H. cf. alpina Holcodiscus caillaudianus besides Leptoceras spp. (some new © Biodiversity Heritage Library, http://www.biodiversitylibrary.org/; www.zobodat.at 511 Lytoceras puezanum Eulytoceras phestum Frotetragonites crebrisulcatus Costidiscus recticostatus Costidiscus grebenianus Costidiscus olcostephanoides Costidiscus aff.nodosostriatus Costidiscus cf.rakusi Costidiscus tardus Macroscaphites yvani Macroscaphites binodosus Macroscaphites tirolensis Crioceratites ecnerici Crioceratites ex gr.eraerici "Crioceratites"c f.barremense "Crioceratites"c f.orbignyi Parancyloceras ? sp. Leptoceras spp. Ancyloceras mojsisovici Ancyloceras vandenheckii Imerites giraudi Eristavia dichotoma Pseudothurmannia pseudomalbosi Pseudothurmannia belimelensis Pseudothurmannia picteti Pseudothurmannia cf.catulloi Pseudothurmannia biassalensis Pseudothurmannia cf.angulicostata Hamulina astieriana Torcapella suessi Barremites strettostoma Pseudohaploceras tachthaliae Pseudohaploceras portaeferreae Pseudohaploceras matheroni Holcodiscus caillaudianus Holcodiscus
Load more

Recommended publications
  • Stratigraphic Implications of a New Lower Cretaceous Ammonoid Fauna from the Puez Area (Valanginian – Aptian, Dolomites, Southern Alps, Italy)
    Geo.Alp, Vol. 3, S. 55–83, 2006 STRATIGRAPHIC IMPLICATIONS OF A NEW LOWER CRETACEOUS AMMONOID FAUNA FROM THE PUEZ AREA (VALANGINIAN – APTIAN, DOLOMITES, SOUTHERN ALPS, ITALY) Alexander Lukeneder1 & Christian Aspmair2 With 6 figures and 8 plates 1 Natural History Museum, Geological-Palaeontological Department, Burgring 7, A-1010 Wien, Austria, e-mail: [email protected] 2 Prissian 102, I – 39010 Tisens (BZ), Italy Abstract Lower Cretaceous ammonoids (n = 424) were collected at the Puez locality in the Dolomites of Southern Tyrol. The cephalopod fauna from the marly limestones to marls here indicates Late Valanginian to Early Aptian age. The deposition of the marly limestones and marls of this interval occurred during depositional- ly unstable conditions. The underlying Biancone Formation (Maiolica Formation) is of Early Valanginian, whereas the lowermost Rosso Ammonitico is of Jurassic to Berriasian age. The ammonoid fauna consists of 27 different genera, each represented by 1-2 species. The assemblage at the Puez section is dominated by the Phylloceratina (30%) and the Ammonitina (34%). Phyllopachyceras (17%) and Phylloceras (13%) (both Phylloceratina) are the most frequent components, followed by Lytoceras (12%) (Lytoceratina), and Barremites (10%) and Melchiorites (8%) (both Ammonitina). The cephalopod fauna is purely of Mediterranean origin. Zusammenfassung Unterkreide Ammonoideen (424 Exemplare) der Puez Lokalität in den Dolomiten Süd-Tirols wurden unter- sucht. Die Fauna der mergeligen Kalke und Mergel von Puez zeigen ein Alter von Ober-Valanginium bis Unter-Aptium an. Die mergeligen Kalke und Mergel dieses Abschnitts lagerten sich unter instabiler Bedingungen ab. Die unterlagernde Biancone Formation (Maiolica Formation) zeigt Unter-Valanginium an, wogegen die tiefste Formation des Rosso Ammonitico auf Ober-Jura bis Berriasium hindeutet.
    [Show full text]
  • The Tendaguru Formation (Late Jurassic to Early Cretaceous, Southern Tanzania): Definition, Palaeoenvironments, and Sequence Stratigraphy
    Fossil Record 12 (2) 2009, 141–174 / DOI 10.1002/mmng.200900004 The Tendaguru Formation (Late Jurassic to Early Cretaceous, southern Tanzania): definition, palaeoenvironments, and sequence stratigraphy Robert Bussert1, Wolf-Dieter Heinrich2 and Martin Aberhan*,2 1 Institut fr Angewandte Geowissenschaften, Technische Universitt Berlin, Skr. BH 2, Ernst-Reuter-Platz 1, 10587 Berlin, Germany. E-mail: [email protected] 2 Museum fr Naturkunde – Leibniz Institute for Research on Evolution and Biodiversity at the Humboldt University Berlin, Invalidenstr. 43, 10115 Berlin, Germany. E-mail: [email protected]; [email protected] Abstract Received 8 December 2008 The well-known Late Jurassic to Early Cretaceous Tendaguru Beds of southern Tanza- Accepted 15 February 2009 nia have yielded fossil plant remains, invertebrates and vertebrates, notably dinosaurs, Published 3 August 2009 of exceptional scientific importance. Based on data of the German-Tanzanian Tenda- guru Expedition 2000 and previous studies, and in accordance with the international stratigraphic guide, we raise the Tendaguru Beds to formational rank and recognise six members (from bottom to top): Lower Dinosaur Member, Nerinella Member, Middle Dinosaur Member, Indotrigonia africana Member, Upper Dinosaur Member, and Ruti- trigonia bornhardti-schwarzi Member. We characterise and discuss each member in de- tail in terms of derivation of name, definition of a type section, distribution, thickness, lithofacies, boundaries, palaeontology, and age. The age of the whole formation appar- ently ranges at least from the middle Oxfordian to the Valanginian through Hauterivian or possibly Aptian. The Tendaguru Formation constitutes a cyclic sedimentary succes- sion, consisting of three marginal marine, sandstone-dominated depositional units and three predominantly coastal to tidal plain, fine-grained depositional units with dinosaur remains.
    [Show full text]
  • An Early Cretaceous Radiolarian Assemblage and Its Palaeoecological Implications of the Northern Calcareous Alps (Barremian, Lunz Nappe, Lower Austria)
    ©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at 126 Berichte der Geologischen Bundesanstalt, ISSN 1017- 8880, Band 74, Wien 2008 ____________________________________________________________________________________________________ STOP 1. SPARBACH (SCHRAMBACH FORMATION; VALANIGINIAN TO BARREMIAN) An Early Cretaceous radiolarian assemblage and its palaeoecological implications of the Northern Calcareous Alps (Barremian, Lunz Nappe, Lower Austria) Compendium from Alexander LUKENEDER, Miroslava SMREČKOVA (2006) Abstract: Detailed palaeontological and lithological studies of Lower Cretaceous sediments from Lower Austria uncovered spectra of Lower Barremian microfaunal elements (e.g. radiolarians). Lower Barremian radiolarians are figured for the first time from the Northern Calcareous Alps. The radiolarian assemblage from Sparbach was obtained out of marly limestone beds of the Karsteniceras Level. The Early Barremian level is dominated by the ammonoid Karsteniceras ternbergense (Coronites darsi Zone). The geochemical results (e.g. TOC, S, and CaCO3) combined with preservational features (e.g. different pyrititization stages) of the radiolarian fauna indicate that the Karsteniceras Level was deposited under oxygen-depleted conditions, showing partly eutrophic peaks and producing mass occurrences of pyritized radiolarians in laminated, dark sediments. Introduction The main focus of this paper is to give a The Early Cretaceous of the Flössel Syncline detailed description and stratigraphy combined is considered to range from the Late of the known ammonoid zonation (Lukeneder Valanginian to the Early Barremian (Lukeneder in press) correlated with new microfossil data. in press). The discovery of a Lower As preservation and radiolarian abundance Cretaceous ammonoid mass-occurrence in the reflects primary environmental conditions the Flössel Syncline (Lunz Nappe, Northern described radiolarian fauna is also investigated Calcareous Alps, Lower Austria), of Early on these patterns.
    [Show full text]
  • (Ammonoidea, Gassendiceratinae), and New Ammonite Biohorizon for the Upper Barremian of Southeastern France
    Carnets de Géologie / Notebooks on Geology - Article 2009/02 (CG2009_A02) Pseudoshasticrioceras bersaci nov. sp. (Ammonoidea, Gassendiceratinae), and new ammonite biohorizon for the Upper Barremian of southeastern France Didier BERT* 1 Gérard DELANOY 2 Abstract: Research in the Feraudianus Subzone of the Sartousiana Zone of the Barremian stage led to the discovery of a new species of Pseudoshasticrioceras: P. bersaci nov. sp. Its study provides evidence concerning the developments of the latest Gassendiceratinae BERT et alii, 2006, and the relationship between the genus Pseudoshasticrioceras DELANOY, 1998, and Gassendiceras BERT et alii, 2006. In particular, this new species is derived from Pseudoshasticrioceras magnini (DELANOY, 1992) by a minor revision in the processes of ontogenesis (retardation of ornamentation - neoteny). However, the evolution towards Pseudoshasticrioceras autrani DELANOY, 1998, implies a "failure" in this process that may possibly be related to parallel changes in environmental conditions. On the other hand, the very closely defined stratigraphic position of Pseudoshasticrioceras bersaci nov. sp., and its position in the anagenetic lineage of Pseudoshasticrioceras, demonstrates its interest as a biostratigraphic marker: a new Bersaci Biohorizon is proposed; it is located between the Magnini and the Autrani biohorizons. Key Words: Ammonitinae; Pseudoshasticrioceras; Gassendiceratinae; Upper Barremian; Sartousiana Zone; Feraudianus Subzone; biozonation; southeastern France. Citation: BERT D. & DELANOY G. (2009).-
    [Show full text]
  • A Comparison of the Ammonite Faunas of the Antarctic Peninsula and Magallanes Basin
    J. geol. Soc. London, Vol. 139, 1982, pp. 763-770, 1 fig, 1 table. Printed in Northern Ireland A comparison of the ammonite faunas of the Antarctic Peninsula and Magallanes Basin M. R. A. Thomson SUMMARY: Ammonite-bearingJurassic and Cretaceous sedimentary successions are well developed in the Antarctic Peninsula and the Magallanes Basin of Patagonia. Faunas of middle Jurassic-late Cretaceous age are present in Antarctica but those of Patagonia range no earlier than late Jurassic. Although the late Jurassic perisphinctid-dominated faunas of the Antarctic Peninsulashow wide-ranging Gondwana affinities, it is not yet possible to effect a close comparison with faunas of similar age in Patagonia because of the latter's poor preservation and our scant knowledge of them. In both regions the Neocomian is not well represented in the ammonite record, although uninterrupted sedimentary successions appear to be present. Lack of correspondence between the Aptian and Albian faunas of Alexander I. and Patagonia may be due to major differences in palaeogeographical setting. Cenomanian-Coniacian ammonite faunas are known only from Patagonia, although bivalve faunas indicate that rocks of this age are present in Antarctica. Kossmaticeratid faunas mark the late Cretaceous in both regions. In Antarcticathese have been classified as Campanian, whereas in Patagonia it is generally accepted, perhaps incorrectly, that these also range into the Maestrichtian. Fossiliferous Jurassic and Cretaceous marine rocks are rize first those of the Antarctic Peninsula and then to well developedin theAntarctic Peninsula, Scotia compare them with those of Patagonia. Comparisons Ridge andPatagonia (Fig. 1A).In Antarcticathese between Antarctic ammonite faunas and other Gond- rocks are distributed along the western and eastern wana areas wereoutlined by Thomson (1981a), and margins of theAntarctic Peninsula, formerly the the faunas of the marginal basin were discussed in magmatic arc from which the sediments were derived.
    [Show full text]
  • Barremian Rhyncholites (Lower Cretaceous Ammonoidea: Calcified Upper Jaws) from the Serre De Bleyton (Département Drôme, SE France)
    ©Naturhistorisches Museum Wien, download unter www.biologiezentrum.at Ann. Naturhist. Mus. Wien, Serie A 112 627-658 Wien, Juni 2010 Barremian rhyncholites (Lower Cretaceous Ammonoidea: calcified upper jaws) from the Serre de Bleyton (Département Drôme, SE France) By Wolfgang RIEGRAF1 & Gero MOOSLEITNER2 (With 2 figures, 2 plates and 1 table) Manuscript submitted on June 10th 2009, the revised manuscript on January 19th 2010 Abstract Seven calcified upper jaw tips of Rhynchoteuthis astieriana D’ORBIGNY and Palaeoteuthis infira (SHIMANSKY) from the Serre de Bleyton section (Dépt. Drôme, SE France) were redeposited from an outer shelf into an upper slope (upper bathyal) environment embedded in a highly fossiliferous Barremian bioclastic limestone. They represent a low diverse and poor preserved small Barremian pelagic rhyncholite fauna, also described from a few Tethyan and Alpine localities between Cuba, the Crimea, and the Caucasus. Rhynchoteuthis and Palaeoteuthis may most probably represent calcified tips of upper jaws of various taxa of Tethyan ammonites, e.g. of the Phylloceratina (Phyl- loceras, Sowerbyceras), Lytoceratina (Tetragonitidae), and/or some Ammonitina (Arnioceras, Eleganticeras, Hildoceras, Aconeceras). But due to their scarcity, poor preservation, and the allochthonous occurrence, the Serre de Bleyton rhynchoteuthids do not contribute further new knowledge to taxonomy, palaeoecology, stratigraphy or basinal history. Kurzfassung Sieben kalkige Oberkieferspitzen – Rhynchoteuthis astieriana D’ORBIGNY und Palaeoteuthis infira (SHIMANSKY) aus einem Profil der Serre de Bleyton (Dépt. Drôme, SE-Frankreich) – gelangten vom Schelf durch Umlagerung in ein oberbathyales Milieu des oberen Kontinentalabhangs, in einen äußerst fossilreichen bioklastischen Kalkstein. Solche geringdiversen und mäßig erhaltenen pe- lagischen Rhyncholithenfaunen des Barremium sind auch von vereinzelten tethyalen und alpinen Fundorten zwischen Kuba, der Krim und dem Kaukasus beschrieben.
    [Show full text]
  • Nannoconid Assemblages in Upper Hauterivian-Lower Aptian Limestones of Cuba: Their Correlation with Ammonites and Some Planktonic Foraminifers2
    STUDIA GEOLOGI CA POLONICA Vol. 114, Krak6w 1999, pp. 35-75. Mesozoic stratigraphy of Cuba Edited by A. Pszczolkowski Andrzej PSZCZOL• KOWSKI 1 & Ryszard MYCZYNSKI' I Nannoconid assemblages in Upper Hauterivian-Lower Aptian limestones of Cuba: their correlation with ammonites and some planktonic foraminifers2 (Figs 1- 13, Tabs 1- 3) Abstract. The nannoconids are abundant in the Lower Cretaceous pelagic limestones in western and central Cuba. In some lin1estone beds, these nannofossils occur together with ammonites or planktonic foraminifers. Our samples were collected from the Polier, Veloz and Paraiso formations. The Late Hauterivian to Early Aptian age of the studied samples is based mainly on ammonites. The nannoconids identified in these samples are grouped in 4 assemblages: Late Hauterivian, Early Barremian, Late Barremian and late Early Aptian. In the Early Barremian assemblage, the narrow­ canal nannoconids are by far more frequent than the wide-canal ones. Small specimens, classified herein provisionally as N truittii truittii, occur also in this assemblage. On the other hand, the representatives of the Nannoconus steinmannii group are absent in the late Early Aptian assemblage, which includes the wide canal forms only. Nannoconids found in one sample may represent an assemblage of the earliest Aptian age. Key words: Nannoconid assemblages, ammonites, planktonic foraminifers, Lower Cretaceous, western and central Cuba. INTRODUCTION Pelagic limestones are the most important lithologic components of the Creta­ ceous passive continental margin and basinal successions in Cuba. These fine­ grained limestones often lack identifiable macrofauna, while stratigraphically use­ ful microfossils are scarce or absent, especially in the Hauterivian to Aptian carbon­ ate rocks.
    [Show full text]
  • A Barremian Ammonoid Association from the Schneeberg Syncline
    ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Annalen des Naturhistorischen Museums in Wien Jahr/Year: 2004 Band/Volume: 106A Autor(en)/Author(s): Lukeneder Alexander Artikel/Article: A Barremian ammonoid association from the Schneeberg Syncline (Early Cretaceous, Northern Calcareous Alps, Upper Austria) 33-51 ©Naturhistorisches Museum Wien, download unter www.biologiezentrum.at Ann. Naturhist. Mus. Wien 106 A 33–51 Wien, November 2004 A Barremian ammonoid association from the Schneeberg Syncline (Early Cretaceous, Northern Calcareous Alps, Upper Austria) by Alexander LUKENEDER1 (With 10 text-figures and 2 plates) Manuscript submitted on 10 June 2003, the revised manuscript on 7 May 2004 Abstract An Early Barremian ammonoid fauna from the Lower Cretaceous Schrambach Formation of the Schnee- berg Syncline (Reichraming Nappe, Northern Calcareous Alps) yielded 8 genera, each represented by 1 or 2 species. The exclusively Mediterranean ammonoids are dominated by Barremites (54.2%) of the Ammonitina, followed by the Lytoceratina (22.9%), Phylloceratina (12.5%) and Karsteniceras (10.4%) from the Ancyloceratina. Key words: Ammonoids, Lower Cretaceous, Barremian, Schneeberg Syncline, Northern Calcareous Alps Zusammenfassung Eine Unter-Barremium Ammonoideen Fauna aus der unterkretazischen Schrambach Formation der Schnee- berg Mulde (Reichraming Decke, Nördliche Kalkalpen) erbrachte 8 Gattungen, von welchen jede durch 1 bis 2 Arten vertreten ist. Die ausschließlich mediterranen Ammonoideen werden von Barremites (54.2%) aus den Ammonitina dominiert, gefolgt von Lytoceratina (22.9%), den Phylloceratina (12.5%) und Karsteniceras (10.4%) aus den Ancyloceratina. Schlüsselworte: Ammonoideen, Unterkreide, Barremium, Schneeberg Mulde, Nördliche Kalkalpen 1. Introduction Lower Cretaceous pelagic sediments (Schrambach Formation) form a major element of the northernmost tectonic units of the Northern Calcareous Alps (e.g.
    [Show full text]
  • A Peculiar Upper Valanginian Cephalopod Fauna from the Carpathian Bend (Codlea Town Area, Romania): Biostratigraphic and Paleobiogeographic Implications
    ©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at Gedenkband zum 100. Todestag von Dionys Stur Redaktion: Harald Lobitzer & Albert Daurer Jb. Geoi. B.-A. ISSN 0016-7800 Band 136 Heft4 S.665-700 Wien, Dezember 1993 • I I I I A Peculiar Upper Valanginian Cephalopod Fauna from the Carpathian Bend (Codlea Town Area, Romania): Biostratigraphic and Paleobiogeographic Implications By EMIL AVRAM & EUGEN GRÄDINARU*) With 2 Text-Figures and 7 Plates Rumänien Karpaten Kreide Vatanginien Cephalopoden Biostratigraphie Paläobiogeographie Contents Zusammenfassung 665 Abstract. .. 665 1. Introduction 666 2. Geological Setting and Previous Stratigraphic Data 667 3. Stratigraphic Occurrence 669 4. Biostratigraphy 670 5. Paleobiogeographic Interpretations 670 6. Systematic Palaeontology 671 References . .. 698 Eine bemerkenswerte Cephalopodenfauna aus dem Oberen Valanginien des Karpatenbogens (Gebiet von Codlea, Rumänien): Biostratigraphische und paläobiogeographische Schlußfolgerungen Zusammenfassung Eine reiche Cephalopoden-Fauna (Ammoniten, Belemniten, Aptychen) aus dem basalen Anteil der Bra~ov-Formation (Ober-Valanginian-?Unter- Apt) im "Piatra Mare"-Steinbruch bei Codlea wird beschrieben. Diese Fauna ist aus vier Gründen wichtig: sie enthält neue Valanginien-Ammoniten; sie gibt bei einigen Arten Hinweise auf veränderte altersmäßige Verbreitung; sie liefert einen weiteren Beweis für den faunistischen Austausch zwischen den tethydischen und borealen Lebensräumen im oberen Valanginien; und sie stellt sicher, daß die Ablagerung der Bra~ov-Formation in der frühen Ober-Valanginien Verrucosum-Zone begann oder sogar im obersten Unter-Valanginien. 39 Arten von Holcophyl/oceras, Ptychophyl/oceras, Lytoceras, Himanloceras, Crioceratites, Euptychoceras, Haploceras (Neolissoceras), Ooslerel/a, Paquiericeras (Julianites), Jeanlhieuloyites, Olcoslephanus, Subastieria, Neocomiles (Tescheniles), Karakaschiceras, Eleniceras, Sarasinel/a, Criosarasinel/a, Rodighieroites, Sabbaiceras, Lamel/aptychus, Duvalia beweisen das Valanginien-Alter des basalen Anteils der Bra~ov-Formation.
    [Show full text]
  • Stratigraphic Implications of a New Lower Cretaceous Ammonoid Fauna from the Puez Area (Valanginian – Aptian, Dolomites, Southern Alps, Italy)
    Geo.Alp, Vol. 3, S. 55–83, 2006 STRATIGRAPHIC IMPLICATIONS OF A NEW LOWER CRETACEOUS AMMONOID FAUNA FROM THE PUEZ AREA (VALANGINIAN – APTIAN, DOLOMITES, SOUTHERN ALPS, ITALY) Alexander Lukeneder1 & Christian Aspmair2 With 6 figures and 8 plates 1 Natural History Museum, Geological-Palaeontological Department, Burgring 7, A-1010 Wien, Austria, e-mail: [email protected] 2 Prissian 102, I – 39010 Tisens (BZ), Italy Abstract Lower Cretaceous ammonoids (n = 424) were collected at the Puez locality in the Dolomites of Southern Tyrol. The cephalopod fauna from the marly limestones to marls here indicates Late Valanginian to Early Aptian age. The deposition of the marly limestones and marls of this interval occurred during depositional- ly unstable conditions. The underlying Biancone Formation (Maiolica Formation) is of Early Valanginian, whereas the lowermost Rosso Ammonitico is of Jurassic to Berriasian age. The ammonoid fauna consists of 27 different genera, each represented by 1-2 species. The assemblage at the Puez section is dominated by the Phylloceratina (30%) and the Ammonitina (34%). Phyllopachyceras (17%) and Phylloceras (13%) (both Phylloceratina) are the most frequent components, followed by Lytoceras (12%) (Lytoceratina), and Barremites (10%) and Melchiorites (8%) (both Ammonitina). The cephalopod fauna is purely of Mediterranean origin. Zusammenfassung Unterkreide Ammonoideen (424 Exemplare) der Puez Lokalität in den Dolomiten Süd-Tirols wurden unter- sucht. Die Fauna der mergeligen Kalke und Mergel von Puez zeigen ein Alter von Ober-Valanginium bis Unter-Aptium an. Die mergeligen Kalke und Mergel dieses Abschnitts lagerten sich unter instabiler Bedingungen ab. Die unterlagernde Biancone Formation (Maiolica Formation) zeigt Unter-Valanginium an, wogegen die tiefste Formation des Rosso Ammonitico auf Ober-Jura bis Berriasium hindeutet.
    [Show full text]
  • Friday, 18. April, 2007 Excursion to Lower Cretaceous Sites. Stop 1
    ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Berichte der Geologischen Bundesanstalt Jahr/Year: 2008 Band/Volume: 74 Autor(en)/Author(s): Lukeneder Alexander Artikel/Article: Excursion to Lower Cretaceous Sites. Stop 1: Sparbach (Schrambach Formation, Valaniginian to Barremian): An equivalent of the Early Cretaceous Karsteniceras Level within the Vienna Woods (Sparbach section, Lunz Nappe, Northern Calcareous Alps, Lower Austria) 112-125 ©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at - 112 - Berichte der Geologischen Bundesanstalt, ISSN 1017- 8880, Band 74, Wien 2008 ____________________________________________________________________________________________________ FIELD TRIP Friday, 18. April, 2007 Excursion to Lower Cretaceous sites. Stop 1. Hauterivian to Barremian limestones near Sparbach in the Vienna Woods (Valanginian-Barremian limestones in a wild-pig-park). Stop 2. Aptian limestones and marls near Sittendorf in the Vienna Woods (Aptian Schrambach- and Thannheim Formation; foraminifera limestone). STOP 1. SPARBACH (SCHRAMBACH FORMATION; VALANIGINIAN TO BARREMIAN) An equivalent of the Early Cretaceous Karsteniceras Level within the Vienna Woods (Sparbach section, Lunz Nappe, Northern Calcareous Alps, Lower Austria) Compendium from Alexander LUKENEDER (2005) Abstract: Detailed palaeontological and lithological studies of Lower Cretaceous sediments from the Northern Calcareous Alps in Lower Austria uncovered spectra
    [Show full text]
  • Sediment 2007
    Sediment 2007 Posterabstracts Sediment 2007 THE LATE TRIASSIC HAUPTDOLOMITE SECTION WIESTALSTAUSEE NEAR HALLEIN (NORTHERN CALCAREOUS ALPS, AUSTRIA): BIOMARKER EVIDENCE FOR THE FORMATION OF ORGANIC-RICH SUCCESSIONS IN SMALL SCALE BASINS WITHIN CARBONATE PLATFORMS A. Bechtel1,2, H.-J. Gawlick1, R. Gratzer1, M. Tomaselli1, and W. Püttmann3 1 Department Angewandte Geowissenschaften und Geophysik, Montanuniversität Leoben, Peter-Tunner-Str. 5, A-8700 Leoben, Austria 2 Institute of Mineralogy and Petrology, University of Bonn, Poppelsdorfer Schloss, D-53115 Bonn, Germany 3 Institute of Atmospheric and Environmental Sciences, Department of Environmental Chemistry, J. W. Goethe-Universität, Georg-Voigt-Str. 14, D-60054 Frankfurt a.M., Germany The origin of organic-bearing reducing sediments green sulfur bacteria (Chlorobiaceae), indicates the estab- within the Late Triassic Hauptdolomite/Dachstein carbon- lishment of euxinic conditions in the bottom water. ate platform of the Northern Calcareous Alps, a subject of some debate, is clarified by microfacies biomarker analy- Comparable diagenetic degradation mechanisms led ses that enable the characterization of the depositional to the formation of hopanes and hop-17(21)-enes. environment of the Norian dolomicrites (Hauptdolomite) Methylated chromans occur in low abundance, and the of the Wiestalstausee section (Lower Tirolic nappe, predominant occurrence of trimethylated C29 chroman Salzburg Calcareous Alps). By examining the section using (tri-MTTC) over dimethylated C28 chroman (di-MTTC) indi- the oxygen-restricted biofacies (ORB) classification, we cates enhanced salinity in the upper part of the water col- find ORB 1-4 mostly in the dark grey organic- rich sedi- umn. Diagenetic conversion of organic matter under ments and ORB 6, or normal oxygen conditions for the anoxic conditions in a high-sulfur environment due to light grey dolomites.
    [Show full text]