Download or read book The Origin and Evolution of the Easter Seamount Chain written by Zhengrong Liu and published by . This book was released on 1996 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evolution of Mid Ocean Ridges written by John M. Sinton and published by American Geophysical Union. This book was released on 1989 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: Outgrowth of IUGG Union Symposium 9 held during the 1987 IUGG General Assembly at Vancouver, Canada, and jointly sponsored by IAVCEI and others.
Download or read book Ocean Island Volcanoes Genesis Evolution and Impact written by Adriano Pimentel and published by Frontiers Media SA. This book was released on 2020-06-08 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ocean island volcanoes constitute some of the most prominent and rapidly-formed features on Earth, and yet they cannot be explained by conventional plate tectonics. Although typically associated with intraplate settings (hotspots), these volcanoes also occur in different geodynamic settings (near mid-ocean ridges). The nature of ocean island magmatism is still the subject of intense debate within the geological community. Traditionally it has been linked to the presence of mantle plumes at depth (e.g. Hawaii), although the interaction with plate tectonics is also recognized to play a significant role (e.g. Azores, Galápagos). Magma compositions may range from basaltic to more differentiated, which consequently is accompanied by striking changes in the eruption style from effusive-dominated to highly explosive volcanism. Understanding how these magmas evolve and how volcanic processes act at ocean island volcanoes are key issues of modern volcanology. Moreover, the growth of ocean island volcanoes from their rise on the seafloor as seamounts, to island emergence and subsequent formation of shield volcanoes (and in some cases large caldera volcanoes) is governed by multiple interrelated changes. It is well known that competing processes model ocean island volcanoes during alternating and/or coeval periods of construction and destruction. The geological evolution of these volcanoes results from the balance among volcanism, intrusions, tectonics, subsidence/uplift, mass wasting, sedimentation, and subaerial and wave erosion. A better knowledge of the interplay between these processes is crucial to obtain a more comprehensive understanding of the evolution of such volcanoes, and to the eventual formulation of a unified model for ocean island evolution. Ocean islands are especially vulnerable to volcanic eruptions and other geological hazards on account of their typical small size, rough topography and isolation, which make risk management and evacuation difficult. Volcanic eruptions, in particular, may have a significant impact on local populations, infrastructures, economy and even on the global climate. It is therefore fundamental to monitor these volcanoes with complementary geophysical, geodetic and geochemical techniques in order to forecast future eruptions and their impacts. However, the assessment of volcanic hazards on ocean islands is challenging due to the large variety of phenomena involved (e.g. lava flows, tephra fallout, pyroclastic density currents, lahars, gas emissions). Different approaches are used to assess volcanic hazards, either based on empirical methods or sophisticated numerical models, focusing on a single phenomenon or the combination of different hazards. This Frontiers Research Topic aims to promote discussion within the scientific community, representing an important step forward in our knowledge of ocean island volcanoes in order to serve as a reference for future research.
Download or read book Origin and Evolution of the Ontong Java Plateau written by J. G. Fitton and published by Geological Society of London. This book was released on 2004 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cretaceous submarine Ontong Java Plateau, in the western Pacific Ocean, is the most voluminous of the world's large igneous provinces(LIPs), and represents the largest known magmatic event on Earth. This volume summarizes the results of research aimed principally at testing the plume-head hypothesis for the formation of the Ontong Java Plateau, and presents the results of integrated studies following recent basement drilling on the plateau by the Ocean Drilling Program. Nineteen papers cover topics as diverse as petrology, geochemistry, tectonics, volcanology, paleomagnatism and biostratigraphy.
Download or read book Hawaiian Natural History Ecology and Evolution written by Alan C. Ziegler and published by University of Hawaii Press. This book was released on 2002-09-30 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: Not since Willam A. Bryan's 1915 landmark compendium, Hawaiian Natural History, has there been a single-volume work that offers such extensive coverage of this complex but fascinating subject. Illustrated with more than two dozen color plates and a hundred photographs and line drawings, Hawaiian Natural History, Ecology, and Evolution updates both the earlier publication and subsequent works by compiling and synthesizing in a uniform and accessible fashion the widely scattered information now available. Readers can trace the natural history of the Hawaiian Archipelago through the book's twenty-eight chapters or focus on specific topics such as island formation by plate tectonics, plant and animal evolution, flightless birds and their fossil sites, Polynesian migrational history and ecology, the effects of humans and exotic animals on the environment, current conservation efforts, and the contributions of the many naturalists who visited the islands over the centuries and the stories behind their discoveries. An extensive annotated bibliography and a list of audio-visual materials will help readers locate additional sources of information.
Download or read book Plates vs Plumes written by Gillian R. Foulger and published by John Wiley & Sons. This book was released on 2011-06-13 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the advent of the mantle plume hypothesis in 1971, scientists have been faced with the problem that its predictions are not confirmed by observation. For thirty years, the usual reaction has been to adapt the hypothesis in numerous ways. As a result, the multitude of current plume variants now amounts to an unfalsifiable hypothesis. In the early 21st century demand became relentless for a theory that can explain melting anomalies in a way that fits the observations naturally and is forward-predictive. From this the Plate hypothesis emerged–the exact inverse of the Plume hypothesis. The Plate hypothesis attributes melting anomalies to shallow effects directly related to plate tectonics. It rejects the hypothesis that surface volcanism is driven by convection in the deep mantle. Earth Science is currently in the midst of the kind of paradigm-challenging debate that occurs only rarely in any field. This volume comprises its first handbook. It reviews the Plate and Plume hypotheses, including a clear statement of the former. Thereafter it follows an observational approach, drawing widely from many volcanic regions in chapters on vertical motions of Earth's crust, magma volumes, time-progressions of volcanism, seismic imaging, mantle temperature and geochemistry. This text: Deals with a paradigm shift in Earth Science - some say the most important since plate tectonics Is analogous to Wegener's The Origin of Continents and Oceans Is written to be accessible to scientists and students from all specialities This book is indispensable to Earth scientists from all specialties who are interested in this new subject. It is suitable as a reference work for those teaching relevant classes, and an ideal text for advanced undergraduates and graduate students studying plate tectonics and related topics. Visit Gillian's own website at http://www.mantleplumes.org
Download or read book Oceanic Hotspots written by Roger Hekinian and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ocean Hotspots provides a comprehensive overview of recent and ongoing research on intraplate volcanism in the ocean basins with special emphasis on the Pacific Ocean. The geology of the seamounts and their associated seamount chains is described, along with detailed geophysical, geochemical and hydrothermal observations made by a multi-disciplinary group of marine geoscientists. These observations lead to a deeper understanding of how the ascending mantle melts, represented by hotspots, are able to penetrate the lithosphere, build seamounts, and enhance hydrothermal circulation. The "fixed" hotspot-generated seamount chains also provide key constraints on plate tectonic reconstructions on the Earth's crust.
Download or read book Global Tectonics written by Philip Kearey and published by John Wiley & Sons. This book was released on 2009-01-20 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of this widely acclaimed textbook provides a comprehensive introduction to all aspects of global tectonics, and includes major revisions to reflect the most significant recent advances in the field. A fully revised third edition of this highly acclaimed text written by eminent authors including one of the pioneers of plate tectonic theory Major revisions to this new edition reflect the most significant recent advances in the field, including new and expanded chapters on Precambrian tectonics and the supercontinent cycle and the implications of plate tectonics for environmental change Combines a historical approach with process science to provide a careful balance between geological and geophysical material in both continental and oceanic regimes Dedicated website available at www.blackwellpublishing.com/kearey/
Download or read book Nazca Plate written by LaVerne D. Kulm and published by Geological Society of America. This book was released on 1981-01-01 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: A volume dedicated to George P. Woollard.
Download or read book Structure and Development of Oceanic Rifted Margins written by Barry Wynn Eakins and published by . This book was released on 2002 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Volcano Tectonic Processes written by Valerio Acocella and published by Springer Nature. This book was released on 2021-05-11 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volcanoes have terrified and, at the same time, fascinated civilizations for thousands of years. Many aspects of volcanoes, most notably the eruptive processes and the compositional variations of magma, have been widely investigated for several decades and today constitute the core of any volcanology textbook. Nevertheless, in the last two decades, boosted by the availability of volcano monitoring data, there has been an increasing interest in the pre-eruptive processes related to the shallow accumulation and to the transfer of magma approaching the surface, as well as in the resulting structure of volcanoes. These are innovative and essential aspects of modern volcanology and, as driving volcanic unrest, their understanding also improves hazard assessment and eruption forecasting. So far, the significant progress made in unravelling these volcano-tectonic processes has not been supported by a comprehensive overview. This monograph aims at filling this gap, describing the pre-eruptive processes related to the structure, deformation and tectonics of volcanoes, at the local and regional scale, in any tectonic setting. The monograph is organized into three sections (“Fundamentals”, “Magma migration towards the surface” and “The regional perspective”), consisting of thirteen chapters that are lavishly illustrated. The reader is accompanied in a journey within the volcano factory, discovering the processes associated with the shallow accumulation of magma and its transfer towards the surface, how these control the structure of volcanoes and their activity and, ultimately, improve our ability to estimate hazard and forecast eruption. The potential readership includes any academic, researcher and upper undergraduate student interested in volcanology, magma intrusions, structural geology, tectonics, geodesy, as well as geology and geophysics in general.
Download or read book Ecosystem Dynamics in a Polar Desert written by and published by American Geophysical Union. This book was released on 1998 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents information from the primary abiotic forces defining the system, and from the present hydrology, biogeochemistry and physics of major sites of organic carbon production of the McMurdo Dry Valleys. Additionally, research on the physical, chemical, and biological properties of the dry valley soils is included. The role of environmental management in long-term ecological studies is also addressed. The accompanying CDROM provides details and scale to visualize the McMurdo Dry Valleys from an ecosystem perspective.
Download or read book Plates Plumes and Paradigms written by Gillian R. Foulger and published by Geological Society of America. This book was released on 2005-01-01 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Galapagos written by Karen S. Harpp and published by John Wiley & Sons. This book was released on 2014-07-22 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Galápagos Islands are renown for their unique flora and fauna, inspiring Charles Darwin in the elaboration of his theory of evolution. Yet in his Voyage of the Beagle, published in 1839, Darwin also remarked on the fascinating geology and volcanic origin of these enchanted Islands. Since then, the Galápagos continue to provide scientists with inspiration and invaluable information about ocean island formation and evolution, mantle plumes, and the deep Earth. Motivated by an interdisciplinary Chapman Conference held in the Islands, this AGU volume provides cross-disciplinary collection of recent research into the origin and nature of ocean islands, from their deepest roots in Earth's mantle, to volcanism, surface processes, and the interface between geology and biodiversity. Volume highlights include: Case studies in biogeographical, hydrological, and chronological perspective Understanding the connection between geological processes and biodiversity Synthesis of decades of interdisciplinary research in physical processes from surface to deep interior of the earth In-depth discussion of the concept of the island acting as a natural laboratory for earth scientists Integrated understanding of the Galápagos region from a geological perspective Collectively, The Galápagos presents case studies illustrating the Galápagos Archipelago as a dynamic natural laboratory for the earth sciences. This book would be of special interest to a multidisciplinary audience in earth sciences, including petrologists, volcanologists, geochronologists, geochemists, and geobiologists.
Download or read book Seamounts written by Tony J. Pitcher and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seamounts are ubiquitous undersea mountains rising from the ocean seafloor that do not reach the surface. There are likely many hundreds of thousands of seamounts, they are usually formed from volcanoes in the deep sea and are defined by oceanographers as independent features that rise to at least 0.5 km above the seafloor, although smaller features may have the same origin. This book follows a logical progression from geological and physical processes, ecology, biology and biogeography, to exploitation, management and conservation concerns. In 21 Chapters written by 57 of the world’s leading seamount experts, the book reviews all aspects of their geology, ecology, biology, exploitation, conservation and management. In Section I of this book, several detection and estimation techniques for tallying seamounts are reviewed, along with a history of seamount research. This book represents a unique and fresh synthesis of knowledge of seamounts and their biota and is an essential reference work on the topic. It is an essential purchase for all fisheries scientists and managers, fish biologists, marine biologists and ecologists, environmental scientists, conservation biologists and oceanographers. It will also be of interest to members of fish and wildlife agencies and government departments covering conservation and management. Supplementary material is available at: www.seamountsbook.info
Download or read book SIO Reference written by and published by . This book was released on 2001 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oriented Magnetic Field Measurements during IODP Expedition 330 to the Louisville Seamount Chain written by Sebastian Ehmann and published by Cuvillier Verlag. This book was released on 2016-12-19 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Das Thema dieser Doktorarbeit ist die Reorientierung und Auswertung von vektoriellen Magnetfelddaten, die in zwei Bohrungen während der IODP Expedition 330 zu den Louisville Seamounts aufgezeichnet wurden. Ein Ziel der Expedition war festzustellen, ob sich der Louisville Hotspot relativ zu dem Hawaiian-Emperor Hotspot im Erdmantel bewegt oder ob er stationär ist. Für die Magnetfeldmessungen wurde das Göttinger Bohrlochmagnetometer verwendet, dessen faseroptische Kreisel in der Lage sind, die Drehungen der Sonde im Bohrloch zu bestimmen, wodurch das gemessene Magnetfeld aus dem Bezugssystem der Sonde in das geographische Koordinatensystem reorientiert werden kann. Es werden verschiedene Algorithmen vorgestellt, die auf unterschiedliche Art und Weise die vorhandenen Sensoren kombinieren, um die Daten bestmöglich zu orientieren. Weiterhin werden verschiedene Schichtmodelle verwendet, um die Richtung der Gesteinsmagnetisierung aus den Magnetfelddaten zu bestimmen, wobei auf Uneindeutigkeiten und Messfehler eingegangen wird. Die Ergebnisse dieser Modellierungen unterstützen die Annahme eines stationären Louisville Hotspots.
