The Ordovician Earth System (Geological Society of America Special Paper)

Delgado, DJ, 1983, Deposition and diagenesis of the Galena Group in the Upper ... from the Tanglewood and Devils Hollow members, Lexington Limestone, ... Cover......Page 1 THE ORDOVICIAN EARTH SYSTEM......Page 2 ISBN 978-0-8137-2466-9......Page 3 Contents......Page 4 Preface......Page 6 1. Global setting of Ordovician orogenesis......Page 10 2. Ordovician explosive volcanism......Page 22 3. Toward identifying potential causes for stratigraphic change in subtropical to tropical Laurentia during the Mohawkian (early Late Ordovician)......Page 38 4. The Upper Ordovician Guttenberg δ13C excursion (GICE) in North America and Baltoscandia: Occurrence, chronostratigraphic significance, and paleoenvironmental relationships......Page 46 5. The Ordovician brachiopod radiation: Roles of alpha, beta, and gamma diversity......Page 78 6. Ordovician paleogeography and tectonics of the major paleoplates of China......Page 94 7. Ordovician of the Siberian Platform......Page 114 8. Early–Middle Ordovician conodont paleobiogeography with special regard to the geographic origin of the Argentine Precordillera: A multivariate data analysis......Page 128 9. Black shales: An Ordovician perspective......Page 150 10. Paleogeographic, paleoceanographic, and tectonic controls on early Late Ordovician graptolite diversity patterns......Page 158 11. Origin of Late Ordovician (mid-Mohawkian) temperate-water conditions on southeastern Laurentia: Glacial or tectonic?......Page 172 12. Correlations across a facies mosaic within the Lexington Limestone of central Kentucky, USA, using whole-rock stable isotope compositions......Page 186 "The Ordovician period is a significant chapter in Earth's history that included the great Mid-Ordovician biodiversification event, the Hirnantian glaciation, and long-term greenhouse conditions. Ordovician rocks are widespread on most continents and the recent finalization of a modern chronostratigraphic classification of the Ordovician system now facilitates high-resolution correlations that allow for integrated multidisciplinary research. The diverse papers comprising this volume address orogenesis, paleogeography, climate modeling, sedimentation, biodiversity, and isotopic excursions; together they promote an integrated view of the Ordovician earth system."--Description de l'éditeur "The Ordovician period is a significant chapter in Earth's history that included the great Mid-Ordovician biodiversification event, the Hirnantian glaciation, and long-term greenhouse conditions. Ordovician rocks are widespread on most continents and the recent finalization of a modern chronostratigraphic classification of the Ordovician system now facilitates high-resolution correlations that allow for integrated multidisciplinary research. The diverse papers comprising this volume address orogenesis, paleogeography, climate modeling, sedimentation, biodiversity, and isotopic excursions; together they promote an integrated view of the Ordovician earth system."--Publisher's description