Plates vs Plumes (PDF)

Preface, ix 1 From plate tectonics to plumes, and back again, 1 1.1 Volcanoes, and exceptional volcanoes, 1 1.2 Early beginnings: Continental drift and its rejection, 1 1.3 Emergence of the Plume hypothesis, 6 1.4 Predictions of the Plume hypothesis, 11 1.5 Lists of plumes, 13 1.6 Testing plume predictions, 21 1.7 A quick tour of Hawaii and Iceland, 23 1.8 Moving on: Holism and alternatives, 26 1.9 The Plate hypothesis, 26 1.10 Predictions of the Plate hypothesis, 35 1.11 Testing the Plate hypothesis, 35 1.12 Revisiting Hawaii and Iceland, 36 1.13 Questions and problems, 37 1.14 Exercises for the student, 37 2 Vertical motions, 38 2.1 Introduction, 38 2.2 Predictions of the Plume hypothesis, 39 2.3 Predictions of the Plate hypothesis, 40 2.4 Comparison of the predictions of the Plume and Plate hypotheses, 43 2.5 Observations, 43 2.6 Plume variants, 73 2.7 Discussion, 74 2.8 Exercises for the student, 76 3 Volcanism, 78 3.1 Introduction, 78 3.2 Predictions of the Plume hypothesis, 84 3.3 Predictions of the Plate hypothesis, 86 3.4 Comparison of the predictions of the Plate and Plume hypotheses, 91 3.5 Observations, 92 3.6 Plume variants, 113 3.7 Discussion, 114 3.8 Exercises for the student, 116 4 Time progressions and relative fi xity of melting anomalies, 118 4.1 Introduction, 118 4.2 Methods, 120 4.3 Predictions of the Plume hypothesis, 122 4.4 Predictions of the Plate hypothesis, 122 4.5 Observations, 123 4.6 Hotspot reference frames, 134 4.7 Plume variants, 1370 4.8 Discussion, 140 4.9 Exercises for the student, 141 5 Seismology, 143 5.1 Introduction, 143 5.2 Seismological techniques, 148 5.3 Predictions of the Plume hypothesis, 153 5.4 Predictions of the Plate hypothesis, 154 5.5 Observations, 155 5.6 Global observations, 179 5.7 Plume variants, 184 5.8 Discussion, 185 5.9 Exercises for the student, 188 6 Temperature and heat, 189 6.1 Introduction, 189 6.2 Methods, 195 6.3 Predictions of the Plume hypothesis, 203 6.4 Predictions of the Plate hypothesis, 205 6.5

Gillian Foulger is Professor of Geophysics at the University of Durham where she has worked since 1985 on earthquake seismology and plate tectonics. She lived and researched in Iceland for seven years, where she acquired a mistrust of theories that do not fit practical observations without contortion. She manages the world-famous website www.mantleplumes.org and is widely acclaimed for leading the global debate regarding the existence of mantle plumes. For this she was awarded the prestigious Price Medal by the Royal Astronomical Society in 2005.

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