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Paperback 128pp; 297x210mm; published 2001. The first Clare Island Survey of 1909-11 was the most ambitious natural history project ever undertaken in Ireland and the first major biological survey of a specific area carried out in the world. The New Survey constitutes a fresh baseline study using up-to-date methodology to provide a comprehensive description of the island from its bedrocks to its biotic communities. The survey traces the history of human occupation and the impact of human activity on Clare Island. It has revealed almost a century of environmental change and will provide an invaluable source for future environmental monitoring. This second volume examines the geology of Clare Island. The island's physical appearance today reflects a geological history of over 500 million years. Major geological boundaries, now expressed as faults, run through the island. Repeated movements along these faults have produced the complex distribution of rock types that continues to fascinate geological researchers. Articles in this volume provide an introduction to the geology of the island and its Silurian and Carboniferous rocks, interpret the age of the Ballytoohy Formation of the northern part of the island using fossil microflora, describe the enigmatic fossil Peltoclados clarus found in the Silurian rocks, discuss rocks that have intruded from considerable depth beneath the island and consider the history of the last two million years, the Quaternary period, using evidence from fossil pollen.
The Geology of Ireland is about the island of Ireland as a physical whole and includes chapters on marine geology and the history of geology in Ireland. The text is intended for professional geologists and students of geology.
This book contains a comprehensive field guide, including detailed itineraries and supporting data, to the Geology of Western Ireland, a classic site for world geology. It facilitates study into the rock record of the Neoproterozoic ‘birth’ to the Devonian ‘death’ of the Iapetus Ocean along the Laurentian (North American) margin. The enormous variety of lithologies and processes available for study in this spectacularly exposed region include: fluviatile to deep-sea sediments; layered ultramafic intrusions to reverse zoned granite batholiths; zeolite to eclogite facies metamorphic assemblages; continental rifting; subduction processes; island arc evolution; arc-continent collision; Andean margin development; and continent-continent collision. An introduction to the geology, that includes information relevant to the planning and execution of field trips in the region, is followed by nine chapters each providing the necessary background, field itineraries, exercises and points for debate, covering: the Laurentian basement and Neoproterozoic cover of North Mayo, Sligo, the Ox Mountains and Connemara; the metamorphic nappes and syn-orogenic intrusions of the Ordovician Grampian Orogeny; the Cambro-Ordovician subduction-accretion complex of Clew Bay; the obducted Ordovician fore-arc basin of South Mayo; the post-subduction flip late-Ordovician of South Connemara; the Silurian successor basins deformed during the final closure of the Iapetus Ocean; the late to post-orogenic Devonian sediments; the Devonian Granite batholiths ; and the post-orogenic Carboniferous cratonic sediments. Two final chapters summarise: the current tectonic interpretation of this region; areas for future research; and the extensive sources of geochemical and geophysical data.
Part of the "New Survey of Clare Island" series, this volume offers an account of the archaeology of the island.
The first in a series of volumes presenting the new survey of Clare Island, this text introduces the history and folklife of this island in Clew Bay, County Mayo. Topics covered include folklife farming and fishing practices, the evolution of the landscape and the island's place names.