[PDF] The Use Of And Rock Magnetism To Understand Volcanic Processes eBook

Author : M.H. Ort
Publisher : Geological Society of London
Page : 283 pages
File Size : 16,22 MB
Release : 2015-04-09
Category : Science
ISBN : 1862396299

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This volume provides a synopsis of current research on volcanic processes, as gained through the use of palaeomagnetic and rock magnetic techniques. Thermoremanent magnetization information provides a powerful means of deciphering thermal processes in volcanic deposits, including estimating the emplacement temperature of pyroclastic deposits, which allows us to understand better the rates of cooling during eruption and transport. Anisotropy of magnetic susceptibility and anisotropy of remanence are used primarily to investigate rock fabrics and to quantify flow dynamics in dykes, lava flows, and pyroclastic deposits, as well as identify vent locations. Rock-magnetic characteristics allow correlation of volcanic deposits, but also provide means to date volcanic deposits and to understand better their cooling history. Because lava flows are typically good recorders of past magnetic fields, data from them allow understanding of changes in geomagnetic field directions and intensity, providing clues on the origin of Earth’s magnetic field.

Author : Karoly Nemeth
Publisher : BoD – Books on Demand
Page : 426 pages
File Size : 41,90 MB
Release : 2016-09-21
Category : Science
ISBN : 9535126229

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Updates in Volcanology - From Volcano Modeling to Volcano Geology is a new book that is based on book chapters offered by various authors to provide a snapshot of current trends in volcanological researches. Following a short Introduction, the book consists of three sections, namely, ''Understanding the Volcano System from Petrology, Geophysics to Large Scale Experiments,'' ''Volcanic Eruptions and Their Impact to the Environment,' and ''Volcanism in the Geological Record.'' These sections collect a total of 13 book chapters demonstrating clearly the research activity in volcanology from geophysical aspects of volcanic systems to their geological framework. Each chapter provides a comprehensive summary of their subject's current research directions. This book hence can equally be useful for students and researchers.

Author : Valentin R. Troll
Publisher : Elsevier
Page : 637 pages
File Size : 36,43 MB
Release : 2016-05-26
Category : Science
ISBN : 0128096640

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The Geology of the Canary Islands provides a concise overview of the geology and volcanology of the Canary Islands, along with 27 carefully planned day excursions comprising trips on all of the islands. Each stop includes a description on how to approach a site and where to park with GPS locations provided. The book covers all the spectacular features of the islands, including active ocean island volcanoes whose origins are linked to a hot spot or plume causing anomalously hot mantle material to intrude the African plate, submarine volcanic sequences uplifted inside the islands, sub- aerial shield volcanoes, and the remains of giant lateral collapses. Through its clearly written and richly color-illustrated introduction and field guide, this book is essential reading for geologists who visit the Canary Islands, one of the largest and most fascinating active volcanic systems in Europe. Includes a forward by Prof. C. J. Stillman (Trinity College Dublin), a leading expert on the volcanology and geology of the Canary Islands Features 500 full color images, coupled with in-depth introductory text and a chapter on each island, followed by 27 guided excursions that include all of the seven islands of the archipelago Familiarizes the reader with the variety of volcanic landforms and eruptive products in the Canary Islands and provides practical support in recognition, recording, and interpretation Develops understanding of growth, evolution, and destruction of ocean island volcanoes, promoting temporal and spatial thinking within a given geological framework

Author : Pedar W. Foss
Publisher : Routledge
Page : 323 pages
File Size : 37,75 MB
Release : 2022-03-29
Category : History
ISBN : 1000557189

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Pliny and the Eruption of Vesuvius is a forensic examination of two of the most famous letters from the ancient Mediterranean world: Pliny the Younger’s Epistulae 6.16 and 6.20, which offer a contemporary account of the eruption of Vesuvius in AD 79. These letters, sent to the historian Tacitus, provide accounts by Pliny the Younger about what happened when Mt Vesuvius exploded, destroying the surrounding towns and countryside, including Pompeii and Herculaneum, and killing his uncle, Pliny the Elder. This volume provides the first comprehensive full-length treatment of these documents, contextualized by evidence-rich biographies for both Plinys, and a synthesis of the latest archaeological and volcanological research which answers questions about the eruption date. A new collation of sources results in a detailed manuscript tradition and an authoritative Latin text, while commentaries on each letter offer copiously referenced insights on their structure, style, and meaning. Pliny and the Eruption of Vesuvius offers a thorough companion to these letters, and to the eruption, which will be of interest not only to those working on Vesuvius, Pompeii, and Herculaneum, and the works of Pliny but also to general readers, Latin students, and scholars of the Roman world more broadly.

Author : Eric Font
Publisher : Frontiers Media SA
Page : 88 pages
File Size : 29,3 MB
Release : 2017-05-16
Category :
ISBN : 2889451704

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Recent advances in environmental magnetism offer the opportunity to link the magnetic signature of marine and continental rocks to the paleoenvironmental and paleoclimatic settings that controlled their formation or deposition, as well as to post-depositional events, such as diagenesis, that can alter their primary signature. This Research Topic assembles studies that used state of the art rock magnetic techniques to unravel the causes and effects of catastrophic geological events, including tsunami, meteorite impacts, Archean oxygenation event, geomagnetic reversals, and global climate changes linked to large volcanic eruptions. Eric Font Alexandra Abrajevitch Fabio Florindo

Author : David Gubbins
Publisher : Springer Science & Business Media
Page : 1061 pages
File Size : 35,43 MB
Release : 2007-07-19
Category : Science
ISBN : 1402044232

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This reference encompasses the fields of Geomagnetism and Paleomagnetism in a single volume. Both sciences have applications in navigation, in the search for minerals and hydrocarbons, in dating rock sequences, and in unraveling past geologic movements such as plate motions they have contributed to a better understanding of the Earth. The book describes in fine detail the current state of knowledge and provides an up-to-date synthesis of the most basic concepts. It is an indispensable working tool not only for geophysicists and geophysics students but also for geologists, physicists, atmospheric and environmental scientists, and engineers.

Author : Silvia Leonor Lagorio
Publisher : Springer
Page : 145 pages
File Size : 18,30 MB
Release : 2016-03-23
Category : Science
ISBN : 3319295934

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This book analyzes the Early Cretaceous volcanic processes in Misiones Province and in Sierra Chica de Córdoba (Argentina). The volcanism in Misiones is tholeiitic and belongs to the Parana Magmatic Province (PMP), which extends throughout South America. In contrast, the volcanism in Córdoba is geographically restricted and of alkaline nature, representing a potassic locality peripheral to the PMP. To understand the causes of and geodynamic processes involved in these volcanisms, a new 40Ar /39Ar of 129.6 ± 1 Ma of a trachyte from Sierra Chica de Córdoba is presented. This dating points out that the volcanism in Sierra Chica de Córdoba slightly postdates PMP lavas. Moreover, complementary geochemical analyses from Misiones Province are presented and compared with those from the whole PMP in order to characterize its source

Author : D. Collinson
Publisher : Springer Science & Business Media
Page : 515 pages
File Size : 26,29 MB
Release : 2013-06-29
Category : Science
ISBN : 9401539790

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During the last 30 years the study of the magnetic properties of rocks and minerals has substantially contributed to several fields of science. Perhaps the best known and most significant advances have resulted from the study of palaeomagnetism, which led to quantitative confirmation of continental drift and polar wandering through interpretation of the direction of remanent magnetism observed in rocks of different ages from different continents. Palaeomagnetism has also, through observations of reversals of magnetiz ation, ancient secular variation and ancient field intensities provided data relevant to the origin of the geomagnetic field, and other investigations have contributed significantly to large-scale and local geological studies, the dating of archaeological events and artefacts and more recently to lunar and meteoritic studies. Rock and mineral magnetism has proved to be an interesting study in its own right through the complex magnetic properties and interactions observed in the iron-titanium oxide and iron sulphide minerals, as well as contributing to our understanding of remanent magnetism and magnetization processes in rocks. Simultaneous with the development of these studies has been the develop ment of instruments and techniques for the wide range of investigations involved.

Author : Keith D. Putirka
Publisher : Walter de Gruyter GmbH & Co KG
Page : 688 pages
File Size : 18,10 MB
Release : 2018-12-17
Category : Science
ISBN : 1501508482

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Volume 69 of Reviews in Mineralogy and Geochemistry covers the fundamental issues of volcanology: At what depths are eruptions triggered, and over what time scales? Where and why do magmas coalesce before ascent? If magmas stagnate for thousands of years, what forces are responsible for initiating final ascent, or the degassing processes that accelerate upward motion? To the extent that we can answer these questions, we move towards formulating tests of mechanistic models of volcanic eruptions (e.g., Wilson, 1980; Slezin, 2003; Scandone et al., 2007), and hypotheses of the tectonic controls on magma transport (e.g., ten Brink and Brocher, 1987; Takada, 1994; Putirka and Busby, 2007). Our goal, in part, is to review how minerals can be used to understand volcanic systems and the processes that shape them; we also hope that this work will spur new and integrated studies of volcanic systems.