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The Use of Palaeomagnetism and Rock Magnetism to Understand Volcanic Processes

Author: M.H. Ort

Publisher: Geological Society of London

Published: 2015-04-09

Total Pages: 283

ISBN-13: 1862396299

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.

Methods in Rock Magnetism and Palaeomagnetism

Author: D. Collinson

Publisher: Springer Science & Business Media

Published: 2013-06-29

Total Pages: 503

ISBN-13: 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.

Updates in Volcanology

Author: Karoly Nemeth

Publisher: BoD – Books on Demand

Published: 2016-09-21

Total Pages: 426

ISBN-13: 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.

The Geology of the Canary Islands

Author: Valentin R. Troll

Publisher: Elsevier

Published: 2016-05-26

Total Pages: 636

ISBN-13: 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

Essentials of Paleomagnetism

Author: Lisa Tauxe

Publisher: Univ of California Press

Published: 2010-03-19

Total Pages: 505

ISBN-13: 0520260317

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"This book by Lisa Tauxe and others is a marvelous tool for education and research in Paleomagnetism. Many students in the U.S. and around the world will welcome this publication, which was previously only available via the Internet. Professor Tauxe has performed a service for teaching and research that is utterly unique."—Neil D. Opdyke, University of Florida

Pliny and the Eruption of Vesuvius

Author: Pedar W. Foss

Publisher: Routledge

Published: 2022-03-29

Total Pages: 323

ISBN-13: 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.

Early Cretaceous Volcanism in Central and Eastern Argentina During Gondwana Break-Up

Author: Silvia Leonor Lagorio

Publisher: Springer

Published: 2016-03-23

Total Pages: 145

ISBN-13: 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

Magnetic Records of Extreme Geological Events

Author: Eric Font

Publisher: Frontiers Media SA

Published: 2017-05-16

Total Pages: 88

ISBN-13: 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

Monogenetic Volcanism

Author: K. Németh

Publisher: Geological Society of London

Published: 2017-06-20

Total Pages: 385

ISBN-13: 178620276X

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The nature and origin of the small-scale volcanic systems, generally referred to as 'monogenetic', have enjoyed an elevated level of interest during the past decade. There has been recognition that their ostensibly simple volcano types are a window into the nature of explosive volcanism, landscape evolution and the processes of magma generation in the Earth’s upper mantle. In the past few years, major conferences have offered specialized technical sessions dealing with monogenetic volcanism and there have been thematic conferences, such as the IAVCEI International Maar Conference series, which have provided a focus for discussion of volcanological and geochemical aspects of small-scale basaltic volcanism. Many new aspects of monogenetic volcanism have emerged and have clearly demonstrated that this volcanism can be very complex on a fine scale. This book is a collection of papers arising from two recent Maar Conferences (the fifth in Queretaro Mexico and the sixth in Changchun, China) and serves as a snapshot of current research on monogenetic volcanism.

Geomagnetism

Author: Nathani Basavaiah

Publisher: Springer Science & Business Media

Published: 2012-03-05

Total Pages: 502

ISBN-13: 9400704038

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With the awareness that the Earth has a magnetic field, its mathematical description, discovery of remanent magnetisation in rocks and discovery of the periodic reversals of the geomagnetic field polarity, geomagnetism within geophysics became an interesting field of study. This is primarily due to advances in measurement technology and improved understanding of the magnetic field and its fluctuations in the geospace. Several important aspects of solid Earth geomagnetism are elaborated in the book. The first six chapters cover the basics of magnetism, magnetic minerals, biomagnetics, instrumentation and the behavior of geomagnetic field, while the rest of the book is devoted to practical applications with carefully selected examples and illustrations. Well-written and easy to read, the book vividly describes modern techniques in the subject matter covered, adequately supported by graphical explanations for complex mathematical concepts.