Reversals Of The Earth S Magnetic Field

This 1994 book examines how reversals of the Earth's magnetic field have played a major role in establishing plate tectonics and a geological time scale.

Many times through deep history Earth’s magnetic poles have switched places, leaving our planet’s protective shield weaker and life vulnerable to devastating solar storms. The last time it happened was 780,000 years ago, long before humans emerged, but it won’t be long until it happens again. And when it does, will it send us back to the Stone Age? The Spinning Magnet is a fascinating insight into what may lie ahead. From the pivotal discoveries of Victorian scientists to the possibility of solar radiation wiping out power grids, and the secrets of electromagnetism, Alanna Mitchell reveals the truth behind one of the most powerful forces in the universe.

The Earth's Magnetic Field : Its History, Origin, and Planetary Perspective

This is a discount Black and white version. Some images may be unclear, please see BCCampus website for the digital version.This book was born out of a 2014 meeting of earth science educators representing most of the universities and colleges in British Columbia, and nurtured by a widely shared frustration that many students are not thriving in courses because textbooks have become too expensive for them to buy. But the real inspiration comes from a fascination for the spectacular geology of western Canada and the many decades that the author spent exploring this region along with colleagues, students, family, and friends. My goal has been to provide an accessible and comprehensive guide to the important topics of geology, richly illustrated with examples from western Canada. Although this text is intended to complement a typical first-year course in physical geology, its contents could be applied to numerous other related courses.

Magnetic Stratigraphy is the most comprehensive book written in the English language on the subject of magnetic polarity stratigraphy and time scales. This volume presents the entirety of the known geomagneticrecord, which now extends back about 300 million years. The book includes the results of current research on sea floor spreading, magnetic stratigraphy of the Pliocene and Pleistocene, and postulations on the Paleozoic. Also included are both historicalbackground and applications of magnetostratigraphy. Individual chapters on correlation are presented, using changes in magnetic properties and secular variation. Key Features * Discusses pioneering work in the use of marine sediments to investigate the Earths magnetic field * Serves as a guide for students wishing to begin studies in magnetostratigraphy * Provides a comprehensive guide to magnetic polarity stratigraphy including up-to-date geomagnetic polarity time scales * Correlates magnetic stratigraphics from marine and non-marine Cenozoic sequences * Details reversal history of the magnetic field for the last 350 million years * Discusses correlation using magnetic dipole intensity changes * Up-to-date correlation of biostratigraphy with magnetic stratigraphy through the late Jurassic