Scleractinian Corals from the Upper Berriasian of Central Europe and Comparison with Contemporaneous Coral Assemblages PDF Download

Author: Rosemarie C. Baron-Szabo
Publisher:
ISBN: 9781776703135
Category :
Languages : en
Pages : 98

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Author: Rosemarie C. Baron-Szabo
Publisher:
ISBN: 9781776882427
Category :
Languages : en
Pages : 0

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"Abstract: From the Schrattenkalk Formation (upper Barremian-lower Aptian) of southern Germany, western Austria, and Switzerland, new coral material is taxonomically described, belonging to 56 species from 35 genera of 21 families: Actinastrea pseudominima (Koby); A. subornata (d'Orbigny); Paretallonia bendukidzeae Sikharulidze; Eugyra (Felixigyra) crassa (de Fromentel) (new combination); E. (F.) patruliusi (Morycowa); E. (F.) picteti (Koby) (new combination); E. rariseptata Morycowa; Myriophyllia propria Sikharulidze; Thecosmilia dichotoma Koby; Clausastrea plana (de Fromentel); Complexastrea cf. lobata Geyer; Paraclausastrea chevalieri Zlatarski; P. kaufmanni (Koby); P. vorarlbergensis Baron-Szabo; ?Montlivaltia sp.; Diplogyra subplanotabulata Sikharulidze; Hydnophora styriaca (Michelin); Dermosmilia fiagdonensis Starostina & Krasnov; D. cf. laxata (Étallon); D. trichotoma Eguchi; D. tuapensis Baron-Szabo & Gonzalez.-León; Placophyllia grata Bugrova; Cairnsipsammia merbeleri Baron-Szabo; Morphastrea ludovici (Michelin) (emended herein); Ahrdorffia ornata (Morycowa); Astraeofungia tirnovoriana (Toula) (new combination); Actinaraea (Camptodocis) brancai (Dietrich); A. tenuis Morycowa; Rhipidomeandra bugrovae Morycowa & Masse; Comoseris aptiensis Baron-Szabo; Comoseris jireceki Toula; Polyphylloseris mammillata Eguchi; Ellipsocoenia barottei (de Fromentel) (new combination); Ellipsocoenia haimei (de Fromentel) (new combination); Dimorphastrea tenustriata de Fromentel; Latomeandra cf. plicata (Goldfuss); Microphyllia gemina Eliášová; Thalamocaeniopsis stricta (Milne Edwards & Haime)(new combination); Trigerastraea haldonensis (Duncan) (new combination); Heliocoenia rozkowskae Morycowa; H. vadosa (Počta); Stylosmilia corallina Koby; Cyathophora decipiens ramosa (Hackemesser) (new combination); C. mirtschinkae Kuzmicheva; Cladophyllia clemencia de Fromentel; C. conybearei Milne Edwards & Haime; C. crenata (Blanckenhorn); C. furcifera Roemer; C. rollieri (Koby); C. stutzi (Koby) (new combination); Amphiaulastrea conferta (Ogilvie); A. rarauensis (Morycowa); Heterocoenia inflexa (Eichwald); H. minima d'Orbigny; Acanthogyra aptiana Turnšek; as well as the new species Columnocoenia falkenbergensis. In addition, all the information about previously described taxa from the Schrattenkalk was evaluated with regard to their taxonomic assignment, stratigraphic and paleogeographic distribution, and paleoenvironmental relationships to faunas from other geographic areas and time periods. A total of 122 species belonging to 53 genera and 24 families are recognized from Schrattenkalk localities (western Austria, southern Germany, Switzerland). These include the taxa of both the Lower and Upper Schrattenkalk, and the intercalated Rawil Member. The Schrattenkalk coral fauna nearly exclusively consists of colonial forms of three general categories of polyp integration: cerioid-plocoid (33.6%); branching (18%); and (hydno-) meandroid-thamnasterioid (46.7%). Only two specimens were doubtfully assigned to solitary taxa. Corallite diameters range from less than 1 mm to over 20 mm and fall into three major corallite-size groups: small (up to 2.4 mm), medium (>2.4-9.5 mm), and large (>9.5 mm). The fauna is distinctly dominated by forms with medium-size corallites (68%), followed by forms having small-size corallites (26%). Together with the potential solitary taxa, corals with large-size corallites are of minimal importance to the total fauna. On the genus-level, the Schrattenkalk corals show closest affinities to coral assemblages of central (especially France; 55%), eastern and southern Europe (44-49%), as well as Central America (47%). On the species-level, closest affinities are to coral assemblages of central, southeastern, and eastern Europe (16-25.5%), as well as Central America (14%), but nearly a third of the Schrattenkalk species (30%) was restricted to the upper Barremian-lower Aptian of the Schrattenkalk Formation; this suggests that the Schrattenkalk platform sensu lato was a diversity center and a crucial reservoir for coral recruitment. The majority (86%) of the Schrattenkalk corals thrived in a shallow-water, reefal to perireefal, subtropical marine environment. In general, the Schrattenkalk coral assemblages are characteristic of moderate- to high-energy environments of the inner shelf to shore zone, having morphotype associations that typically prevail down to 10-15 m depth. In contrast, for the Upper Schrattenkalk coral fauna of central Switzerland (Hergiswil), a non-reefal paleoenvironment at a depth of several tens of meters is suggested by the morphotypes of the taxa and types of microfacies present. The corals of the Schrattenkalk Formation occurred in both photozoan (Lower and Upper Schrattenkalk members) and heterozoan (Rawil member) carbonate-producing communities. With regard to taxonomic diversity, the Schrattenkalk coral fauna is comparable to the most species-rich Upper Jurassic reef assemblages and represents the last major coral-reef development of the Mesozoic. Keywords: Lower Cretaceous, Helvetic Zone, Schrattenkalk Formation, Austria, Germany, Switzerland, Taxonomy, Scleractinia, Paleoecology, heterozoan/ photozoan communities"--Page 5.

Author: Filkorn
Publisher: American Geophysical Union
ISBN:
Category :
Languages : en
Pages : 107

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Author: Søren Floris
Publisher:
ISBN:
Category : Corals, Fossil
Languages : en
Pages : 328

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Author: Søren Floris
Publisher:
ISBN:
Category : Corals, Fossil
Languages : en
Pages : 132

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Author: Søren Floris
Publisher:
ISBN:
Category : Corals, Fossil
Languages : en
Pages : 132

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Author: Cecilio Quesada
Publisher: Springer
ISBN: 3030112950
Category : Science
Languages : en
Pages : 568

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Taking a new global approach, this unique book provides an updated review of the geology of Iberia and its continental margins from a geodynamic perspective. Owing to its location close to successive plate margins, Iberia has played a pivotal role in the geodynamic evolution of the Gondwanan, Rheic, Pangea, Tethys s.l. and Eurasian plates over the last 600 Ma of Earth's history. The geological record starts with the amalgamation of Gondwana in the Neoproterozoic succeeded by the rifting and spreading of the Rheic ocean; its demise, which led to the amalgamation of Pangea in the late Paleozoic; the rifting and spreading of several arms of the Neotethys ocean in the Mesozoic Era and their ongoing closure, which was responsible for the Alpine orogeny. The significant advances in the last 20 years have attracted international research interest in the geology of the Iberian Peninsula. This volume presents the most comprehensive, and updated description of the Alpine cycle in Iberia. This volume focuses in the different geological events during the Alpine orogeny as well as the lithological succession . This book is of interest not only for scientists of Portugal and Spain but also for geoscientists searching for analogies for oil and gas as well as tourists visiting the main mountain ridges of Iberia such as the Pyrenees.

Author: Knut Bjørlykke
Publisher: Springer
ISBN: 3642341322
Category : Science
Languages : en
Pages : 666

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This comprehensive textbook presents an overview of petroleum geoscience for geologists active in the petroleum industry, while also offering a useful guide for students interested in environmental geology, engineering geology and other aspects of sedimentary geology. In this second edition, new chapters have been added and others expanded, covering geophysical methods in general and electromagnetic exploration methods in particular, as well as reservoir modeling and production, unconventional resources and practical petroleum exploration.

Author: George D. Stanley Jr.
Publisher: Springer Science & Business Media
ISBN: 1461512190
Category : Science
Languages : en
Pages : 468

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From the Preface: The chapters of this book contain contributions from an international group of specialists. They address some important themes in both modern and ancient reef systems. Some chapters contain `snapshots' of reefs of particular intervals, while others touch on relevant themes of both modern and ancient reefs - themes that weave their way through reefs of all ages. This book opens and sets the stage with an introduction to both modern and ancient reefs and reef ecosystems. This chapter is also intended as a basic introduction for students, general geologists, and professionals or others who may be unfamiliar with reefs and reef ecosystems. The chapter addresses the living coral reef ecosystem, stressing among other relevant factors, the importance of ecological and physical interactions between the organisms and their environment. The chapter also addresses mass extinction and provides a general overview of the history of reefs.

Author: Santanu Banerjee
Publisher: Springer Nature
ISBN: 3030713709
Category : Science
Languages : en
Pages : 727

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This book envisages a multi-proxy approach using stable isotopes, geochemical proxies, magnetic susceptibility and associated biotic events for paleoclimatic and paleoenvironmental interpretations of the Mesozoic sedimentary record of India. Mesozoic rocks of India record abnormal sea level rise, greenhouse climate, intensified volcanism, hypoxia in seawater, extensive black shale deposition, and hydrocarbon occurrence. The Mesozoic has also witnessed mass extinction events, evolution of dinosaurs, and breakdown of the supercontinent Pangea and the formation of Gondwana. Although the Mesozoic geology of India has witnessed significant progress in the last century, literature survey reveals a huge gap in knowledge regarding sequence stratigraphy, chemostratigraphy and key geological events. A synthesis of sedimentological, paleontological and chemical data is included to presenting a comprehensive understanding of the Indian Mesozoic record to students, researchers and professionals.