UID:
almahu_9948026221502882
Format:
1 online resource (194 p.)
ISBN:
1-281-77363-8
,
9786611773632
,
0-08-087042-2
Series Statement:
Elsevier oceanography series ; 6
Content:
Geomagnetism in Marine Geology
Note:
Description based upon print version of record.
,
Front Cover; Geomagnetism in Marine Geology; Copyright Page; CONTENTS; PREFACE; CHAPTER 1. THE PHYSICS OF GEOMAGNETISM; Magnetic intensity; Intensity of magnetization; Field due to a dipole; Inclination of the geomagnetic field; A simple two-dimensional model for rough estimates; CHAPTER 2. MAGNETIC PROPERTIES OF OCEANIC BASALTS; Diamagnetism and paramagnetism; Ferromagnetism; Anti-ferromagnetism and ferrimagnetism; Composition of ferromagnetic rock-forming minerals; Effects of domain and grain size; Thermoremanent magnetization; Thermomagnetic properties of oceanic basalts
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Removal of unstable magnetizationMagnetic viscosity; Natural magnetization of basalts; Instruments and methods for measuring magnetic properties; CHAPTER 3. MEASUREMENT OF GEOMAGNETIC INTENSITY AT SEA; The total intensity anomaly; The proton magnetometer; CHAPTER 4. THE EARTH'S MAGNETISM AND ITS HISTORY; The elements of the geomagnetic field; Time fluctuations; Secular variations; Chronology of geomagnetic field reversals; The theory of Vine and Matthews; Reversal chronology in ocean sediments; Extrapolation of reversal chronology from lineated anomalies; Length of polarity epochs
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The geomagnetic dynamoCHAPTER 5. EXAMPLES OF LINEATED MAGNETIC ANOMALIES IN THE OCEANS; Identification of lineated anomalies; Subjectivity of the comparison process; Test for symmetry; The Antarctic Pacific; The South Atlantic; CHAPTER 6. UNDERTHRUSTING OF THE LITHOSPHERE AND PLATE TECTONICS; Model of spreading and consumption of lithosphere; Foci of earthquakes; Other evidence for consumption; Transform faults and epicenters; Earthquakes outline tectonic plates; Plate rotations; Examples of plate rotations; CHAPTER 7. ABSOLUTE DISPLACEMENT WITH REGARD TO THE EARTH'S ROTATIONAL AXIS
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Paleomagnetism of seamountsCalculation of virtual geomagnetic poles; The polar curve; Northward drift of the Pacific Plate; Latitude from magnetization of sediments; Paleolatitude from anomaly shape and amplitude; The biogenic equator; CHAPTER 8. INTERACTION BETWEEN THE FLOOR OF THE PACIFIC OCEAN AND ITS MARGINS; Subduction in Aleutian Trench; Origin of the Great Magnetic Bight; Shifting of spreading direction in the Northeast Pacific; CHAPTER 9. THE INDIAN OCEAN; Coverage; Two spreading episodes; Identification of older anomalies; Evolution of the Indian Ocean floor
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CHAPTER 10. DEPENDENCE OF OCEAN DEPTH AND TERRESTRIAL HEAT FLOW ON THE AGE OF THE OCEAN FLOORCooling after extrusion; Measurement of heat flow at sea; Age bands in the northern Pacific; Continental heat flow; Crustal model; Calculation of ocean depth from age; CHAPTER 11. THE NORTH ATLANTIC; Four magnetic zones; Variable spreading rates; Variations in spreading direction; Rotation of Spain; Greenland and the Labrador Sea; A single supercontinent; CHAPTER 12. THE ARCTIC OCEAN; From Iceland to Nansen Ridge; The Nansen Ridge; CHAPTER 13. MAGNETIC INTENSITY MEASUREMENTS NEAR AND ON THE BOTTOM
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Near bottom magnetic surveys
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English
Additional Edition:
ISBN 0-444-41001-5
Language:
English
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