Explosive Subaqueous Volcanism

Explosive Subaqueous Volcanism PDF Author: James D. L. White
Publisher: American Geophysical Union
ISBN:
Category : Science
Languages : en
Pages : 414

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Book Description
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 140. Subaqueous explosive eruptions are common, and in earth's early history were ubiquitous. Although they are unlike eruptions we find on land, they operate with the same fundamental processes. Deep-sea eruptions modify important seafloor hydrothermal systems and their coupled habitats for extremophile organisms, and large eruptions on the continental shelf presumably have as yet unknown effects on a wide range of marine organisms. Shallow eruptions that can affect shipping lanes and threaten coastal environments, either directly or by generation of tsunami, also appear to produce deposits and conditions closely linked with formation of significant chunks of the world's mineral resources.

Explosive Subaqueous Volcanism

Explosive Subaqueous Volcanism PDF Author: James D. L. White
Publisher: American Geophysical Union
ISBN:
Category : Science
Languages : en
Pages : 414

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Book Description
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 140. Subaqueous explosive eruptions are common, and in earth's early history were ubiquitous. Although they are unlike eruptions we find on land, they operate with the same fundamental processes. Deep-sea eruptions modify important seafloor hydrothermal systems and their coupled habitats for extremophile organisms, and large eruptions on the continental shelf presumably have as yet unknown effects on a wide range of marine organisms. Shallow eruptions that can affect shipping lanes and threaten coastal environments, either directly or by generation of tsunami, also appear to produce deposits and conditions closely linked with formation of significant chunks of the world's mineral resources.

Subaqueous Volcanism, from Ancient Successions to Modern Volcanoes and Modelling

Subaqueous Volcanism, from Ancient Successions to Modern Volcanoes and Modelling PDF Author: Carles Soriano
Publisher: Frontiers Media SA
ISBN: 2889636992
Category :
Languages : en
Pages : 158

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Book Description


Geological Field Trips in Southern Idaho, Eastern Oregon, and Northern Nevada

Geological Field Trips in Southern Idaho, Eastern Oregon, and Northern Nevada PDF Author: Kathleen M. Haller
Publisher: Geological Society of America
ISBN:
Category : Science
Languages : en
Pages : 186

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Book Description
173 page guidebook with detailed descriptions of field trips conducted for the Geological Society of America Meeting in Boise, Idaho, May 2004.

Volcanism in Antarctica: 200 Million Years of Subduction, Rifting and Continental Break-up

Volcanism in Antarctica: 200 Million Years of Subduction, Rifting and Continental Break-up PDF Author: J.L. Smellie
Publisher: Geological Society of London
ISBN: 178620536X
Category : Science
Languages : en
Pages : 802

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Book Description
This memoir is the first to review all of Antarctica’s volcanism between 200 million years ago and the Present. The region is still volcanically active. The volume is an amalgamation of in-depth syntheses, which are presented within distinctly different tectonic settings. Each is described in terms of (1) the volcanology and eruptive palaeoenvironments; (2) petrology and origin of magma; and (3) active volcanism, including tephrochronology. Important volcanic episodes include: astonishingly voluminous mafic and felsic volcanic deposits associated with the Jurassic break-up of Gondwana; the construction and progressive demise of a major Jurassic to Present continental arc, including back-arc alkaline basalts and volcanism in a young ensialic marginal basin; Miocene to Pleistocene mafic volcanism associated with post-subduction slab-window formation; numerous Neogene alkaline volcanoes, including the massive Erebus volcano and its persistent phonolitic lava lake, that are widely distributed within and adjacent to one of the world’s major zones of lithospheric extension (the West Antarctic Rift System); and very young ultrapotassic volcanism erupted subglacially and forming a world-wide type example (Gaussberg).

Caldera Volcanism

Caldera Volcanism PDF Author: Joachim Gottsmann
Publisher: Elsevier
ISBN: 0080558976
Category : Science
Languages : en
Pages : 517

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Book Description
This volume aims at providing answers to some puzzling questions concerning the formation and the behavior of collapse calderas by exploring our current understanding of these complex geological processes. Addressed are problems such as:- How do collapse calderas form? - What are the conditions to create fractures and slip along them to initiate caldera collapse and when are these conditions fulfilled? - How do these conditions relate to explosive volcanism?- Most products of large caldera-forming eruptions show evidence for pre-eruptive reheating. Is this a pre-requisite to produce large volume eruptions and large calderas?- What are the time-scales behind caldera processes? - How long does it take magma to reach conditions ripe enough to generate a caldera-forming eruption?- What is the mechanical behavior of magma chamber walls during caldera collapse? Elastic, viscoelastic, or rigid? - Do calderas form by underpressure following a certain level of magma withdrawal from a reservoir, or by magma chamber loading due to deep doming (underplating), or both?- How to interpret unrest signals in active caldera systems?- How can we use information from caldera monitoring to forecast volcanic phenomena?In the form of 14 contributions from various disciplines this book samples the state-of-the-art of caldera studies and identifies still unresolved key issues that need dedicated cross-boundary and multidisciplinary efforts in the years to come. - International contributions from leading experts - Updates and informs on all the latest developments - Highlights hot topic areas and identifies and analyzes unresolved key issues

Volcanic Eruptions and Their Repose, Unrest, Precursors, and Timing

Volcanic Eruptions and Their Repose, Unrest, Precursors, and Timing PDF Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309454158
Category : Science
Languages : en
Pages : 135

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Book Description
Volcanic eruptions are common, with more than 50 volcanic eruptions in the United States alone in the past 31 years. These eruptions can have devastating economic and social consequences, even at great distances from the volcano. Fortunately many eruptions are preceded by unrest that can be detected using ground, airborne, and spaceborne instruments. Data from these instruments, combined with basic understanding of how volcanoes work, form the basis for forecasting eruptionsâ€"where, when, how big, how long, and the consequences. Accurate forecasts of the likelihood and magnitude of an eruption in a specified timeframe are rooted in a scientific understanding of the processes that govern the storage, ascent, and eruption of magma. Yet our understanding of volcanic systems is incomplete and biased by the limited number of volcanoes and eruption styles observed with advanced instrumentation. Volcanic Eruptions and Their Repose, Unrest, Precursors, and Timing identifies key science questions, research and observation priorities, and approaches for building a volcano science community capable of tackling them. This report presents goals for making major advances in volcano science.

Pyroclastic Rocks

Pyroclastic Rocks PDF Author: Richard V. Fisher
Publisher: Springer Science & Business Media
ISBN: 3642748643
Category : Science
Languages : en
Pages : 485

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Book Description
Pyroclastic Rocks is the first modern comprehensive treatment of what they are and how they were formed. The subject is discussed against a background of plate tectonics theory and modern advances in volcanology, sedimentology and igneous petrology. The book provides a thorough discussion of magmatic volatiles and pyroclastic processes as well as magma-water interactions. Most of the book is concerned with the wide spectrum of pyroclastic rocks formed on land and under water and by fallout and various flowage mechanisms. Diagenetic processes by which pyroclastic particles are transformed into rocks are discussed in detail. The stratigraphic and tectonic importance of pyroclastic rocks are illustrated using selected case histories. This uniquely integrated account of pyroclastic processes, particles and rocks will prove a valuable aid in reconstructing dynamic aspects of earth evolution as well as predicting future volcanic hazards; understanding sedimentary basins containing petroleum and gas deposits; locating ore deposits in volcanic complexes and heat sources in geothermal prospecting; and facilitating stratigraphic analysis in complex volcanic terrains.

Modeling Volcanic Processes

Modeling Volcanic Processes PDF Author: Sarah A. Fagents
Publisher: Cambridge University Press
ISBN: 1139619225
Category : Science
Languages : en
Pages : 902

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Book Description
Understanding the physical behavior of volcanoes is key to mitigating the hazards active volcanoes pose to the ever-increasing populations living nearby. The processes involved in volcanic eruptions are driven by a series of interlinked physical phenomena, and to fully understand these, volcanologists must employ various physics subdisciplines. This book provides the first advanced-level, one-stop resource examining the physics of volcanic behavior and reviewing the state-of-the-art in modeling volcanic processes. Each chapter begins by explaining simple modeling formulations and progresses to present cutting-edge research illustrated by case studies. Individual chapters cover subsurface magmatic processes through to eruption in various environments and conclude with the application of modeling to understanding the other volcanic planets of our Solar System. Providing an accessible and practical text for graduate students of physical volcanology, this book is also an important resource for researchers and professionals in the fields of volcanology, geophysics, geochemistry, petrology and natural hazards.

Sedimentation in Volcanic Settings

Sedimentation in Volcanic Settings PDF Author: Richard Virgil Fisher
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 272

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Book Description


The Precambrian Earth

The Precambrian Earth PDF Author: P.G. Eriksson
Publisher: Elsevier
ISBN: 008054259X
Category : Science
Languages : en
Pages : 967

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Book Description
In this book the editors strive to cover all primary (i.e. non-applied) topics in Precambrian geology in a non-partisan way, by using a large team of international authors to present their datasets and highly divergent viewpoints. The chapters address: celestial origins of Earth and succeeding extraterrestrial impact events; generation of continental crust and the greenstone-granite debate; the interaction of mantle plumes and plate tectonics over Precambrian time; Precambrian volcanism, emphasising komatiite research; evolution and models for Earth's hydrosphere and atmosphere; evolution of life and its influence on Precambrian ocean chemistry and chemical sedimentation; sedimentation through Precambrian time; the application of sequence stratigraphy to the Precambrian rock record. Each topic is introduced and a non-partisan closing commentary provided at the end of each chapter. The final chapter blends the major geological events and rates at which important processes occurred into a synthesis, which postulates a number of "event clusters" in the Precambrian when significant changes occurred in many natural systems and geological environments. Also available in paperback, ISBN: 0-444-51509-7