The role of hydrothermal fluids during the crystallization of layered intrusions and the ore deposits they contain has long been debated. This book summarizes the evidence for fluid-crystal-liquid (hydromagmatic) interactions and their importance for the understanding of the formation of platinum-group deposits in layered intrusions. It discusses the composition of igneous fluids in mafic magmatic systems, the generation and movement of these fluids in layered intrusions, their impact in altering the mineralogy and composition of the originally precipitated assemblages, and their role in the transport of the platinum-group elements (PGE). Using examples from the Bushveld complex of South Africa and other intrusions, this book provides a comprehensive overview of the hydromagmatic model for the origin of various features of layered intrusions. It is a useful reference for academic researchers and professional geologists working on economic mineral exploration, layered igneous intrusions, and hydrothermal metallogenesis.

Kostrov and Das present a general theoretical model summarizing our current knowledge of fracture mechanics as applied to earthquakes and earthquake source processes. Part I explains continuum and fracture mechanics, providing the reader with some background and context. Part II continues with a discussion of the inverse problem of earthquake source theory and a description of the seismic moment tensor. Part III presents specific earthquake source models. Although data processing and acquisition techniques are discussed only in simplified form for illustrative purposes, the material in this book will aid in better orienting and developing these techniques. The aim of this book is to explore the phenomena underlying earthquake fracture and present a general theoretical model for earthquake source processes.

The most utilized technique for exploring the Earth's subsurface for petroleum is reflection seismology. However, a sole focus on reflection seismology often misses opportunities to integrate other geophysical techniques such as gravity, magnetic, resistivity, and other seismicity techniques, which have tended to be used in isolation and by specialist teams. There is now growing appreciation that these technologies used in combination with reflection seismology can produce more accurate images of the subsurface. This book describes how these different field techniques can be used individually and in combination with each other and with seismic reflection data. World leading experts present chapters covering different techniques and describe when, where, and how to apply them to improve petroleum exploration and production. It also explores the use of such techniques in monitoring CO2 storage reservoirs. Including case studies throughout, it will be an invaluable resource for petroleum industry professionals, advanced students, and researchers.

Seismosaurus: The Earth Shaker is a richly illustrated telling of the trials and triumphs of the discovery and excavation of Seismosaurus hallorum, the longest dinosaur yet known - and possibly the largest land animal ever to have lived. This is the first book to explain clearly the science used by paleontologists and the new cutting-edge techniques that led to Seismosaurus's discovery. David Gillette's first-person account of the project answers the most frequently asked questions about Seismosaurus: How was it discovered? How do we know it is a new species? How was it named? And more intriguing still, how did it die? His chronicle also examines the sauropods in general - the giant dinosaurs that with Seismosaurus include Apatosaurus (Brontosaurus), Brachiosaurus, and Diplodocus. This lively tale of discovery is woven with anecdotes and descriptions of the details of the excavation, which began with small jackhammers and later incorporated such sophisticated machinery as ground-penetrating radar that "looks" for fossils underground with radio waves. The story moves from the excavation site in 1985 to current advances in research and then back to the prehistoric age as Gillette, in adventure-narrative style, describes the habitat, habits, and characteristics of the sauropod, right down to Seismosaurus's gastroliths - stomach stones that helped in digestion. Part catalogue of the workings of paleontological science in the 1990s, the book also illustrates the exciting collaboration between David Gillette and the chemists and physicists who helped to reconstruct Seismosaurus and its life. Excavation of the Seismosaurus skeleton was completed in the fall of 1993. Some bones are already ondisplay at the New Mexico Museum of Natural History. Meanwhile, Mark Hallett, a consultant on Steven Spielberg's Jurassic Park, brings Seismosaurus to life in more than eighty marvelous color and black-and-white illustrations. Seismosaurus: The Earth Shaker is a delight!

Perfect for senior undergraduates and first-year graduate students in geophysics, physics, mathematics, geology and engineering, this book is devoted exclusively to seismic wave theory. The result is an invaluable teaching tool, with its detailed derivations of formulas, clear explanations of topics, exercises along with selected answers, and an additional set of exercises with derived answers on the book's website. Some highlights of the text include: a review of vector calculus and Fourier transforms and an introduction to tensors, which prepare readers for the chapters to come; and a detailed discussion on computing reflection and transmission coefficients, a topic of wide interest in the field; a discussion in later chapters of plane waves in anisotropic and anelastic media, which serves as a useful introduction to these two areas of current research in geophysics. Students will learn to understand seismic wave theory through the book's clear and concise pedagogy.

This book is an introductory text to a range of numerical methods used today to simulate time-dependent processes in Earth science, physics, engineering, and many other fields. The physical problem of elastic wave propagation in 1D serves as a model system with which the various numerical methods are introduced and compared. The theoretical background is presented with substantial graphical material supporting the concepts. The results can be reproduced with the supplementary electronic material provided as python codes embedded in Jupyter notebooks. The book starts with a primer on the physics of elastic wave propagation, and a chapter on the fundamentals of parallel programming, computational grids, mesh generation, and hardware models. The core of the book is the presentation of numerical solutions of the wave equation with six different methods: 1) the finite-difference method; 2) the pseudospectral method (Fourier and Chebyshev); 3) the linear finite-element method; 4) the spectral-element method; 5) the finite-volume method; and 6) the discontinuous Galerkin method. Each chapter contains comprehension questions, theoretical, and programming exercises. The book closes with a discussion of domains of application and criteria for the choice of a specific numerical method, and the presentation of current challenges.

Geomathematics provides a comprehensive summary of the mathematical principles behind key topics in geophysics and geodesy, covering the foundations of gravimetry, geomagnetics and seismology. Theorems and their proofs explain why physical realities in geoscience are the logical mathematical consequences of basic laws. The book also derives and analyzes the theory and numerical aspects of established systems of basis functions; and presents an algorithm for combining different types of trial functions. Topics cover inverse problems and their regularization, the Laplace/Poisson equation, boundary-value problems, foundations of potential theory, the Poisson integral formula, spherical harmonics, Legendre polynomials and functions, radial basis functions, the Biot-Savart law, decomposition theorems (orthogonal, Helmholtz, and Mie), basics of continuum mechanics, conservation laws, modelling of seismic waves, the Cauchy-Navier equation, seismic rays, and travel-time tomography. Each chapter ends with review questions, with solutions for instructors available online, providing a valuable reference for graduate students and researchers.

This thesis adopts the relative back-projection method to dramatically reduce "swimming" artifacts by identifying the rupture fronts in the time window of a reference station; this led to a faster and more accurate image of the rupture processes of earthquakes. Mitigating the damage caused by earthquakes is one of the primary goals of seismology, and includes saving more people's lives by devising seismological approaches to rapidly analyze an earthquake's rupture process. The back-projection method described in this thesis can make that a reality.

Christopher Scholz, an internationally recognized expert in the geological fields of seismology and tectonics, here offers a captivating memoir of a three-month-long field expedition to northern Botswana. "Fieldwork" tracks the adventures of a group of American scientists trying to gather critical data in some of the wildest and most inhospitable parts of Africa. Scholz effectively captures the unique challenges and obstacles faced in this kind of scientific endeavor, including mysterious encounters with a primitive bushman tribe and unavoidable dealings with belligerent local officials and even near-fatal stampedes by rampaging elephants. It is through this absorbing tale that Scholz offers a paean to the long and unique traditions of geological fieldwork, and provides readers with an inside view of the trials and joys of scientific fieldwork.

The goal of the Scholz expedition was to determine, by recording tiny natural earthquakes, if a previously unknown arm of the East African Rift system had propagated into the Kalahari Desert from the north. "Fieldwork" tracks the quest of the scientist for a solution to a specific geological problem from the motivations of the scientist, to the initial formulation of the problem, through to the data collection, and finally, the assembly of the critical evidence.

Originally published in 1998.

The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These paperback editions preserve the original texts of these important books while presenting them in durable paperback editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

Building upon the award-winning second edition, this comprehensive textbook provides a fundamental understanding of the formative processes of igneous and metamorphic rocks. Encouraging a deeper comprehension of the subject by explaining the petrologic principles, and assuming knowledge of only introductory college-level courses in physics, chemistry, and calculus, it lucidly outlines mathematical derivations fully and at an elementary level, making this the ideal resource for intermediate and advanced courses in igneous and metamorphic petrology. With over 500 illustrations, many in color, this revised edition contains valuable new material and strengthened pedagogy, including boxed mathematical derivations allowing for a more accessible explanation of concepts, and more qualitative end-of-chapter questions to encourage discussion. With a new introductory chapter outlining the "bigger picture," this fully updated resource will guide students to an even greater mastery of petrology.

"If ever there was a subject crying out for a good biography it is Charles Richter, whose name we hear all too often on the news, a tocsin of catastrophe. If ever there was the ideal person to write his story it is Susan Hough, the seismologist who has so successfully made her mission the intelligent popularization of her calling. The combination of subject and writer is peerless-this is a quite wonderful story, impeccably told. If ever there was to be a Richter scale for biography, this surely merits a 9.5, at the very least."--Simon Winchester, author of "A Crack in the Edge of the World: America and the Great California Earthquake of 1906"

"Sue Hough brings Charlie Richter to life and, with him, the founders of seismology in southern California. More than simply the inventor of the magnitude scale, Richter was a brilliant, if troubled, scientist and a poet who might have suffered from Asperger's syndrome. Hough shows how this 'accidental seismologist' (his Ph.D. was in theoretical physics) influenced the evolving field of earthquake science and the public perception of earthquake hazard and risk in California and the world."--Robert S. Yeats, author of "Living with Earthquakes in California"

"The story of Charles Richter is a fascinating, albeit somewhat disquieting, one. Susan Hough has done a remarkable job of research, and her writing style makes this a very appealing read."--Clarence Allen, Professor of Geology and Geophysics, Emeritus, California Institute of Technology

""Richter's Scale" is the first biography of the world's most famous seismologist. It tells a story well worth reading and full of surprises. The book provides a remarkable perspective on how the careerof an important scientist can develop in a way that is quite far from a straight-line process. At the same time, it presents a compelling and rather sad story of the personal struggles of the man behind the Richter scale."--Clifford H. Thurber, University of Wisconsin, Madison

"This is an extraordinary piece of scientific biography. Although Charles Richter's name is a household word, even earth scientists know little about the man. This first biography of Richter gives a thoughtful and insightful view of the man, his science, and his crucial role in developing seismology, public awareness of earthquakes in southern California, and policies to reduce earthquake hazards through safer construction. It will be of great interest at a time when natural disaster mitigation is very much in public consciousness."--Seth Stein, Northwestern University

After every major earthquake, the Earth rings like a bell for several days. These free oscillations of the Earth and the related propagating body and surface waves are routinely detected at broad-band seismographic stations around the world. In this book, F. A. Dahlen and Jeroen Tromp present an advanced theoretical treatment of global seismology, describing the normal-mode, body-wave, and surface-wave methods employed in the determination of the Earth's three-dimensional internal structure and the source mechanisms of earthquakes. The authors provide a survey of both the history of global seismological research and the major theoretical and observational advances made in the past decade.

The book is divided into three parts. In the first, "Foundations," Dahlen and Tromp give an extensive introduction to continuum mechanics and discuss the representation of seismic sources and the free oscillations of a completely general Earth model. The resulting theory should provide the basis for future scientific discussions of the elastic-gravitational deformation of the Earth. The second part, "The Spherical Earth," is devoted to the free oscillations of a spherically symmetric Earth. In the third part, "The Aspherical Earth," the authors discuss methods of dealing with the Earth's three-dimensional heterogeneity. The book is concerned primarily with the forward problem of global seismology--detailing how synthetic seismograms and spectra may be calculated and interpreted.

As a long-needed unification of theories in global seismology, the book will be important to graduate students and to professional seismologists, geodynamicists, and geomagnetists, as well as to astronomers who study the free oscillations of the Sun and other stars.

The study of volcano-ice interactions, or 'glaciovolcanism', is a field experiencing exponential growth. This comprehensive volume presents a discussion of the distinctive processes and characteristics of glaciovolcanic eruptions, their products, and landforms, with reference to both terrestrial and Mars occurrences. Supported by abundant diagrams and photos from the authors' extensive collections, this book outlines where eruptions have occurred and will occur in the future on Earth, the resulting hazards that are unique to volcano-ice interactions, and how the deposits are used to unravel planetary palaeoclimatic histories. It has a practical focus on lithofacies, glaciovolcanic edifice morphometry and construction, and applications to palaeoenvironmental studies. Providing the first global summary of past and current work, this book also identifies those areas in need of further research, making this an ideal reference for academic researchers and postgraduate students, in the fields of volcanology, glaciology, planetary science and palaeoenvironmental studies.

Volcanoes are unquestionably one of the most spectacular and awe-inspiring features of the physical world. Our paradoxical fascination with them stems from their majestic beauty and powerful, sometimes deadly, destructiveness. Notwithstanding the tremendous advances in volcanology since ancient times, some of the mystery surrounding volcanic eruptions remains today. The Encyclopedia of Volcanoes summarizes our present knowledge of volcanoes; it provides a comprehensive source of information on the causes of volcanic eruptions and both the destructive and beneficial effects. The early chapters focus on the science of volcanism (melting of source rocks, ascent of magma, eruption processes, extraterrestrial volcanism, etc.). Later chapters discuss human interface with volcanoes, including the history of volcanology, geothermal energy resources, interaction with the oceans and atmosphere, health aspects of volcanism, mitigation of volcanic disasters, post-eruption ecology, and the impact of eruptions on organismal biodiversity.

Christopher Scholz, an internationally recognized expert in the geological fields of seismology and tectonics, here offers a captivating memoir of a three-month-long field expedition to northern Botswana. Fieldwork tracks the adventures of a group of American scientists trying to gather critical data in some of the wildest and most inhospitable parts of Africa. Scholz effectively captures the unique challenges and obstacles faced in this kind of scientific endeavor, including mysterious encounters with a primitive bushman tribe and unavoidable dealings with belligerent local officials and even near-fatal stampedes by rampaging elephants. It is through this absorbing tale that Scholz offers a paean to the long and unique traditions of geological fieldwork, and provides readers with an inside view of the trials and joys of scientific fieldwork. The goal of the Scholz expedition was to determine, by recording tiny natural earthquakes, if a previously unknown arm of the East African Rift system had propagated into the Kalahari Desert from the north. Fieldwork tracks the quest of the scientist for a solution to a specific geological problem from the motivations of the scientist, to the initial formulation of the problem, through to the data collection, and finally, the assembly of the critical evidence. Originally published in 1997. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

This third edition provides a concise yet approachable introduction to seismic theory, designed as a first course for graduate students or advanced undergraduate students. It clearly explains the fundamental concepts, emphasizing intuitive understanding over lengthy derivations, and outlines the different types of seismic waves and how they can be used to resolve Earth structure and understand earthquakes. New material and updates have been added throughout, including ambient noise methods, shear-wave splitting, back-projection, migration and velocity analysis in reflection seismology, earthquake rupture directivity, and fault weakening mechanisms. A wealth of both reworked and new examples, review questions and computer-based exercises in MATLAB (R)/Python give students the opportunity to apply the techniques they have learned to compute results of interest and to illustrate Earth's seismic properties. More advanced sections, which are not needed to understand the other material, are flagged so that instructors or students pressed for time can skip them.

The seismic ambient field allows us to study interactions between the atmosphere, the oceans and the solid Earth. The theoretical understanding of seismic ambient noise has improved substantially in the last decades, and the number of its applications has increased dramatically. With chapters written by eminent scientists from the field, this book covers a range of topics including ambient noise observations, generation models of their physical origins, numerical modelling and processing methods. The later chapters focus on applications in imaging and monitoring the internal structure of the Earth, including interferometry for time-dependant imaging and tomography. This volume thus provides a comprehensive overview of this cutting-edge discipline for graduate students studying geophysics and for scientists working in seismology and other imaging sciences.

When the volcano Tambora erupted in Indonesia in 1815, as many as 100,000 people perished as a result of the blast and an ensuing famine caused by the destruction of rice fields on Sumbawa and neighboring islands. Gases and dust particles ejected into the atmosphere changed weather patterns around the world, resulting in the infamous ''year without a summer'' in North America, food riots in Europe, and a widespread cholera epidemic. And the gloomy weather inspired Mary Shelley to write the gothic novel "Frankenstein."

This book tells the story of nine such epic volcanic events, explaining the related geology for the general reader and exploring the myriad ways in which the earth's volcanism has affected human history. Zeilinga de Boer and Sanders describe in depth how volcanic activity has had long-lasting effects on societies, cultures, and the environment. After introducing the origins and mechanisms of volcanism, the authors draw on ancient as well as modern accounts--from folklore to poetry and from philosophy to literature. Beginning with the Bronze Age eruption that caused the demise of Minoan Crete, the book tells the human and geological stories of eruptions of such volcanoes as Vesuvius, Krakatau, Mount Pelee, and Tristan da Cunha. Along the way, it shows how volcanism shaped religion in Hawaii, permeated Icelandic mythology and literature, caused widespread population migrations, and spurred scientific discovery.

From the prodigious eruption of Thera more than 3,600 years ago to the relative burp of Mount St. Helens in 1980, the results of volcanism attest to the enduring connections between geology and human destiny."

This essential reference for graduate students and researchers provides a unified treatment of earthquakes and faulting as two aspects of brittle tectonics at different timescales. The intimate connection between the two is manifested in their scaling laws and populations, which evolve from fracture growth and interactions between fractures. The connection between faults and the seismicity generated is governed by the rate and state dependent friction laws - producing distinctive seismic styles of faulting and a gamut of earthquake phenomena including aftershocks, afterslip, earthquake triggering, and slow slip events. The third edition of this classic treatise presents a wealth of new topics and new observations. These include slow earthquake phenomena; friction of phyllosilicates, and at high sliding velocities; fault structures; relative roles of strong and seismogenic versus weak and creeping faults; dynamic triggering of earthquakes; oceanic earthquakes; megathrust earthquakes in subduction zones; deep earthquakes; and new observations of earthquake precursory phenomena.

Among all the numerical methods in seismology, the finite-difference (FD) technique provides the best balance of accuracy and computational efficiency. This book offers a comprehensive introduction to FD and its applications to earthquake motion. Using a systematic tutorial approach, the book requires only undergraduate degree-level mathematics and provides a user-friendly explanation of the relevant theory. It explains FD schemes for solving wave equations and elastodynamic equations of motion in heterogeneous media, and provides an introduction to the rheology of viscoelastic and elastoplastic media. It also presents an advanced FD time-domain method for efficient numerical simulations of earthquake ground motion in realistic complex models of local surface sedimentary structures. Accompanied by a suite of online resources to help put the theory into practice, this is a vital resource for professionals and academic researchers using numerical seismological techniques, and graduate students in earthquake seismology, computational and numerical modelling, and applied mathematics.

Volcanologists venture to treacherous volcanoes the world over in the pursuit of their science. They work around craters of boiling magma and amidst smoke, flames, scorched rocks, and clouds of noxious gases--balancing personal risk against advancing knowledge about one of nature's most dangerous and unpredictable forces. Richard Fisher, a world-renowned volcanologist, has had more than forty years of experience in the field. In this book, he blends autobiography with clear, accessible science to introduce readers to the basics of volcanology and to the wonders of volcanoes that he has studied and learned to both fear and admire.

In the course of the book, we follow Fisher as he descends into the steaming crater of the Soufri re Volcano on the island of St. Vincent, as he conducts research on lava flows on the desolate south shore of the Island of Hawaii, and as he struggles to understand the explosion at Mount St. Helens. We learn about his pioneering work on pyroclastic flows and surges--the hurricanes of gases, molten lava, and volcanic debris that cause most of the death and destruction when volcanoes explode. He tells of solving a historic scientific problem at Mount Pelee, Martinique, where 29,000 people were killed in a pyroclastic flow in 1902. Fisher also offers a volcanologist's view of the explosion of Mount Vesuvius that devastated Pompeii and Herculaneum. He writes about the cultural rewards and challenges of conducting research in isolated areas of such countries as Argentina, Mexico, and China. And he discusses the early influences that steered him toward volcanology--including his army experiences as a witness to two atom-bomb explosions at Bikini atoll.

"Out of the Crater" is written in an inviting, nontechnical style. With its deft combination of personal stories and scientific information, it is an inspiring account of a remarkable life and a compelling examination of some of the most spectacular forces shaping the face of the Earth.

Most of the world's great volcanic massive suphide ore deposits, porphyry copper ores, and many of its richest gold veins occur in association with basalt-andesite-dactite-rhyolite laval suites that have erupted from ancient volcanic islands and their Precambrian equivalents. These volcanic arcs and their related aquatic-volcanic environments are now recognized as critical to an understanding of the evolution of the earth's crust and the origin of many important ore types. This book is concerned with the behavior of the 'ore elements'--copper, zinc, lead, cobalt, nickel, barium, and others--in young metamorphosed, volcanic arc lava suites, as these evolve from high-magnesium basalts to rhyolites. Using mostly the Pleistocene to recent lavas of the Solomon Islands younger volcanic suite, the author examines the patterns of abundance of these elements in rock constituents and describes the ways in which the metals may be enriched or impoverished in the residual melt as an arc lava series evolves from basalt to rhyolite. The book presents state-of-the-art information that will be indispensable to vulcanologists, geochemists, and mining geologists.

Providing the first worldwide survey of active earthquake faults, this book focuses on those described as 'seismic time bombs' - with the potential to destroy large cities in the developing world such as Port au Prince, Kabul, Tehran and Caracas. Leading international earthquake expert, Robert Yeats, explores both the regional and plate-tectonic context of active faults, providing the background for seismic hazard evaluation in planning large-scale projects such as nuclear power plants or hydroelectric dams. He also highlights work done in more advanced seismogenic countries like Japan, the United States, New Zealand and China, providing an important basis for upgrading building standards and other laws in developing nations. The book also explores the impact of major quakes on social development through history. It will form an accessible reference for analysts and consulting firms, and a convenient overview for academics and students of geoscience, geotechnical engineering and civil engineering, and land-use planning.

Extracting information from seismic data requires knowledge of seismic wave propagation and reflection. The commonly used method involves solving linearly for a reflectivity at every point within the Earth, but this book follows an alternative approach which invokes inverse scattering theory. By developing the theory of seismic imaging from basic principles, the authors relate the different models of seismic propagation, reflection and imaging - thus providing links to reflectivity-based imaging on the one hand and to nonlinear seismic inversion on the other. The comprehensive and physically complete linear imaging foundation developed presents new results at the leading edge of seismic processing for target location and identification. This book serves as a fundamental guide to seismic imaging principles and algorithms and their foundation in inverse scattering theory, and is a valuable resource for working geoscientists, scientific programmers and theoretical physicists.