Triassic Scleractinian Corals of the Zlambach Beds, Northern Calcareous Alps, Austria PDF Download
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Author: Ewa Roniewicz
Publisher:
ISBN:
Category : Paleontology
Languages : en
Pages : 250
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Author: Ewa Roniewicz
Publisher:
ISBN:
Category : Paleontology
Languages : en
Pages : 250
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Author: Dragica Turnšek
Publisher: Založba ZRC
ISBN: 9616182447
Category : Nature
Languages : en
Pages : 520
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Book Description
Velik del slovenskega ozemlja je zgrajen iz mezozojskih, to je triasnih, jurskih in krednih karbonatnih kamnin, katerih pomemben delež sestavljajo koralni grebeni. Ti so v Sloveniji mestoma tako obsežni, da se prištevajo med največje in najbogatejše v svetu. Njihovi glavni graditelji so korale, ki jih avtorica raziskuje že vrsto let. Knjiga združuje rezultate vseh dosedanjih del in jih dopolnjuje z najnovejšimi raziskavami doma in s sodobnimi ugotovitvami v svetu. Po enotnem sistemu je predstavljenih 211 vrst koral, ki po starosti sodijo v zgornji trias, zgornjo juro ter spodnjo in zgornjo kredo.
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: Megan Ruth Rosenblatt
Publisher:
ISBN:
Category : Corals, Fossil
Languages : en
Pages : 152
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The diversity and abundance of Late Triassic scleractinian corals and carbonate microfacies were analyzed from the Wallowa terrane (southern Wallowa Mountains, Oregon) in order to determine regional and distant paleogeographic relationships during the Late Triassic time. Systematic identification of coral species and depositional environments between two formations in the Wallowa terrane (Summit Point Member of the Martin Bridge Formation and Excelsior Gulch of the Hurwal Formation) and one locality in the adjacent Olds Ferry terrane (Willow Spring of the Upper Huntington Formation) were used to analyze similarities between the Tethys realm (Northern Calcareous Alps) and the terranes of the North American Cordillera. The Jaccard and Dice Coefficients were used to determine similarities between the Summit Point Member, Excelsior Gulch conglomerate, and the Willow Spring conglomerate as well as previously studied terranes throughout the Late Triassic world. Results showed strong similarities (p-values less than 0.05) between the Summit Point Member and Excelsior Gulch conglomerate (Wallowa terrane). Statistical similarities between the Wallowa and Olds Ferry terrane were indicated by the Jaccard or Dice Coefficients; however, the co-occurrence of coral species (Cerioheterastraea sp. and Spongiomorpha ramosa) and associated reef biota demonstrate a strong correlation between the Excelsior Gulch conglomerate (Wallowa terrane) and the Willow Spring conglomerate (Olds Ferry terrane). Paleoecological analysis of the Summit Point Member revealed a sequence of in situ stacked patch reefs dominated by scleractinian corals, hypercalcified sponges, and calcareous solenoporacean red algae. Debris produced by physical and biological breakdown of these patch reefs shed voluminous amounts of carbonate remains into the interstitial spaces between the patches creating sediment build-up. This debris created mostly massive limestone with concentrations of reef framework mixed with rudstones and bioclastic grainstones, packstones, and wackestones. Summit Point also provides the best source for the limestone clasts of the Excelsior Gulch conglomerate. The behavior of the Summit Point reef is extremely similar to that of the Dachstein Limestone in the Northern Calcareous Alps, Austria. This discovery provides valuable paleogeographic and paleoecologic information for reef build-ups throughout the Late Triassic world.
Author: John Edward Norwood Veron
Publisher: Cornell University Press
ISBN: 9780801482632
Category : Nature
Languages : en
Pages : 340
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As concerns about the change in global climate and the loss of biodiversity have mounted, attention has focused on the depletion of the ozone layer and the destruction of tropical rainforests. But recently scientists have identified another seriously endangered ecosystem: coral reefs. In Corals in Space and Time, J.E.N. Veron provides a richly detailed study of corals that will inform investigations of these fragile ecosystems. Drawing on twenty-five years of research, Veron brings together extensive field observations about the taxonomy, biogeography, paleontology, and biology of corals. After introducing coral taxonomy and biogeography, as well as relevant aspects of coral biology for the non-specialist, he provides an interpretation of the fossil record and paleoclimates, an analysis of modern coral distribution, and a discussion of the evolutionary nature and origins of coral species. Revealing a sharp conflict between empirical observations about the geographical variation within species, Veron introduces a non-Darwinian theory of coral evolution. He proposes that the evolution of coral species is driven not primarily by natural selection, but by constantly shifting patterns of ocean circulation, which produce changing variations of genetic connectivity. This mechanism of speciation and hybridization has far-reaching consequences for the study of all types of corals and potentially many other groups of organisms as well.
Author: George O. Klein
Publisher: Geological Society of America
ISBN: 0813722888
Category : Science
Languages : en
Pages : 303
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Summarizes invited and contributed papers from the May 1992 Project pangea workshop in Lawrence, Kansas. Topics include the climatic evolution of India and Australia, pangean orogenic and epeirogenic uplifts, permian climatic cooling in the Canadian Arctic, and pangean shelf carbonates. Annotation c
Author:
Publisher:
ISBN:
Category : Paleontology
Languages : en
Pages : 308
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 432
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Author:
Publisher:
ISBN:
Category : Geology, Stratigraphic
Languages : en
Pages : 46
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 460
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