Role Of Volcanism In Climate And Evolution
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Role of Volcanism in Climate and Evolution
Author | : Daniel I. Axelrod |
Publsiher | : Geological Society of America |
Total Pages | : 66 |
Release | : 1981-01-01 |
Genre | : Science |
ISBN | : 9780813721859 |
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Role of volcanism in climate and evolution
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Author | : Daniel I. Axelrod |
Publsiher | : Unknown |
Total Pages | : 59 |
Release | : 1984 |
Genre | : Electronic Book |
ISBN | : OCLC:257129524 |
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Volcanoes
Author | : John P. Lockwood,Richard W. Hazlett |
Publsiher | : John Wiley & Sons |
Total Pages | : 677 |
Release | : 2013-04-26 |
Genre | : Science |
ISBN | : 9781118687949 |
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Volcanoes are essential elements in the delicate global balance of elemental forces that govern both the dynamic evolution of the Earth and the nature of Life itself. Without volcanic activity, life as we know it would not exist on our planet. Although beautiful to behold, volcanoes are also potentially destructive, and understanding their nature is critical to prevent major loss of life in the future. Richly illustrated with over 300 original color photographs and diagrams the book is written in an informal manner, with minimum use of jargon, and relies heavily on first-person, eye-witness accounts of eruptive activity at both "red" (effusive) and "grey" (explosive) volcanoes to illustrate the full spectrum of volcanic processes and their products. Decades of teaching in university classrooms and fieldwork on active volcanoes throughout the world have provided the authors with unique experiences that they have distilled into a highly readable textbook of lasting value. Questions for Thought, Study, and Discussion, Suggestions for Further Reading, and a comprehensive list of source references make this work a major resource for further study of volcanology. Volcanoes maintains three core foci: Global perspectives explain volcanoes in terms of their tectonic positions on Earth and their roles in earth history Environmental perspectives describe the essential role of volcanism in the moderation of terrestrial climate and atmosphere Humanitarian perspectives discuss the major influences of volcanoes on human societies. This latter is especially important as resource scarcities and environmental issues loom over our world, and as increasing numbers of people are threatened by volcanic hazards Readership Volcanologists, advanced undergraduate, and graduate students in earth science and related degree courses, and volcano enthusiasts worldwide. A companion website is also available for this title at www.wiley.com/go/lockwood/volcanoes
Mass Extinctions Volcanism and Impacts
Author | : Thierry Adatte,David P.G. Bond,Gerta Keller |
Publsiher | : Geological Society of America |
Total Pages | : 245 |
Release | : 2020-04-13 |
Genre | : Science |
ISBN | : 9780813725444 |
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"This volume covers new developments and research on mass extinctions, volcanism, and impacts. It addresses the following topics: the Central Iapetus magmatic province; thermogenic degassing in large igneous provinces; global mercury enrichment in Valanginian sediments; Guerrero-Morelos carbonate platform response to the Caribbean-Colombian Cretaceous large igneous province; implications for the Cretaceous-Paleocene boundary event in shallow platform environments and correlation to the deep sea; environmental effects of Deccan volcanism on biotic transformations and attendant Cretaceous/Paleogene boundary mass extinction in the Indian subcontinent; Deccan red boles; and factors leading to the collapse of producers during the Chicxulub impact and Deccan Traps eruptions"--
Ocean Island Volcanoes Genesis Evolution and Impact
Author | : Adriano Pimentel,Ricardo S. Ramalho,Laura Becerril,Patricia Larrea,Richard J. Brown |
Publsiher | : Frontiers Media SA |
Total Pages | : 180 |
Release | : 2020-06-08 |
Genre | : Electronic Book |
ISBN | : 9782889637287 |
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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.
The Role of Volatiles in the Genesis Evolution and Eruption of Arc Magmas
Author | : G.F. Zellmer,M. Edmonds ,S.M. Straub |
Publsiher | : Geological Society of London |
Total Pages | : 294 |
Release | : 2015-03-17 |
Genre | : Science |
ISBN | : 9781862396890 |
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The subduction zone volatile cycle is key to understanding the petrogenesis, transport, storage and eruption of arc magmas. Volatiles control the flux of slab components into the mantle wedge, are responsible for melt generation through lowering the solidi of mantle materials and influence the crystallizing phase assemblages in the overriding crust. Further, the rates and extents of degassing during magma storage and decompression affect magma rheology, ultimately control eruption style and have consequences for the environmental impact of explosive arc volcanism. This book highlights recent progress in constraining the role of volatiles in magmatic processes. Individual book sections are devoted to tracing volatiles from the subducting slab to the overriding crust, their role in subvolcanic processes and eruption triggering, as well as magmatic-hydrothermal systems and volcanic degassing. For the first time, all aspects of the overarching theme of volatile cycling are covered in detail within a single volume.
Volcanic Eruptions and Their Repose Unrest Precursors and Timing
Author | : National Academies of Sciences, Engineering, and Medicine,Division on Earth and Life Studies,Board on Earth Sciences and Resources,Committee on Seismology and Geodynamics,Committee on Improving Understanding of Volcanic Eruptions |
Publsiher | : National Academies Press |
Total Pages | : 135 |
Release | : 2017-07-24 |
Genre | : Science |
ISBN | : 9780309454155 |
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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.
Volcanic Eruptions
Author | : Trent Milburn |
Publsiher | : Nova Science Publishers |
Total Pages | : 0 |
Release | : 2015 |
Genre | : Volcanic activity prediction |
ISBN | : 1634633083 |
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Natural catastrophic events such as volcano eruptions have greatly affected environments in wide regions around the world. Ash and gases impelled by these eruptions into the atmosphere carry large volumes of particles of different sizes (nanometer and ultrafine) that are scattered around the earth. However, the greater accumulation of different grain size was observed in the range of 10 kilometres from the centre of the volcano, causing devastating effect. The most important consequences of this type of event are loss of habitats for flora and fauna. This book discusses the triggers of volcanic eruptions, as well as environmental effects and the role they play in climate change.