Geological Society Special Publication, 001 The Phanerozoic Time-scale A Symposium

Cover......Page 1 Errata......Page 2 Corrigenda......Page 3 Frontispiece......Page 4 Contents......Page 7 Abbreviations used......Page 9 Preface......Page 10 PART I: Introduction......Page 12 Foreword: Arthur Holmes......Page 13 The history of attempts to establish a quantitative time-scale......Page 22 A review of recent Phanerozoic time-scales......Page 38 Sedimentation rates in relation to the Phanerozoic time-scale......Page 46 The relationship between radiometric ages obtained from plutonic complexes and stratigraphical time......Page 52 The geological significance of radiometric age studies on volcanic and hypabyssal rocks......Page 64 Uranium-thorium-lead age-determinations with respect to the Phanerozoic time-scale......Page 79 The rubidium-strontium method......Page 93 Potassium-argon methods with special reference to basic igneous rocks......Page 106 Potassium-argon ages of sedimentary and pyroclastic rocks......Page 123 Potassium-argon decay constants and age tables......Page 132 Glauconite dates from the Upper Jurassic and Lower Cretaceous......Page 146 The age of the paroxysmal Variscan orogeny in England......Page 160 The Tertiary period......Page 177 The Cretaceous period......Page 190 The Jurassic period......Page 200 The Triassic period......Page 203 The Permian period......Page 206 The Carboniferous period......Page 216 The Devonian period......Page 228 The Silurian period......Page 232 The Ordovician period......Page 236 The Cambrian period......Page 250 General Discussion......Page 254 Summary of the Phanerozoic time-scale......Page 255 Introduction......Page 258 Items......Page 262 Items listed in order of radiometric age......Page 436 Alphabetical index to Items......Page 445 Advertisement......Page 451 Back......Page 457