Introduction |
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The Measurement of Time |
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Chapter 1 Astronomical Time |
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3 | (16) |
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1.1 Early Concepts of Time |
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3 | (1) |
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4 | (2) |
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6 | (2) |
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8 | (1) |
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1.5 The Influence of Time on Life |
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8 | (4) |
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8 | (2) |
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10 | (1) |
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11 | (1) |
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12 | (4) |
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1.6.1 The Sumerian calendar |
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12 | (1) |
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13 | (1) |
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1.6.3 The Roman, Julian and Gregorian calendars |
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14 | (2) |
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1.7 The Changing of the Seasons |
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16 | (3) |
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Chapter 2 Early Recording of Time |
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19 | (18) |
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19 | (6) |
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2.1.1 The equatorial sundial |
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19 | (4) |
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2.1.2 The equation of time |
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23 | (1) |
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2.1.3 Other designs of sundials |
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24 | (1) |
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25 | (3) |
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28 | (9) |
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2.3.1 Outflow water clocks |
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29 | (2) |
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2.3.2 Inflow water clocks |
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31 | (2) |
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2.3.3 Mechanized water clocks |
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33 | (4) |
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Chapter 3 Mechanical Clocks |
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37 | (18) |
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3.1 The Salisbury Cathedral Clock |
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37 | (2) |
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3.2 Pendulum-Controlled Clocks |
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39 | (5) |
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44 | (9) |
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3.3.1 John Harrison and his sea clocks |
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47 | (4) |
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3.3.2 Harrison and his watches |
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51 | (2) |
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3.4 Modern Mechanical Watches |
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53 | (2) |
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Chapter 4 Modern Timekeeping |
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55 | (20) |
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55 | (1) |
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56 | (7) |
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4.2.1 The piezoelectric effect |
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57 | (2) |
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59 | (2) |
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4.2.3 The essential mechanism of a quartz clock or watch |
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61 | (1) |
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4.2.4 The accuracy of a quartz timepiece |
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62 | (1) |
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63 | (12) |
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4.3.1 Radiation from atoms and molecules |
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64 | (1) |
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4.3.2 The mechanism of an atomic clock |
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65 | (6) |
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4.3.3 Portable atomic clocks |
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71 | (4) |
Time and Relativity |
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75 | (22) |
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5.1 The Concept of Relativity |
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75 | (7) |
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5.1.1 Light and the ether |
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76 | (1) |
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5.1.2 An attempt to detect the ether |
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77 | (5) |
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82 | (3) |
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5.2.1 Physics at the beginning of the 20th century |
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83 | (2) |
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5.3 The Theories of Relativity and Their Consequences |
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85 | (12) |
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89 | (1) |
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90 | (1) |
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5.3.3 Before, after or simultaneously? |
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91 | (6) |
The Ages of Astronomical Entities |
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Chapter 6 The Age of the Universe |
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97 | (16) |
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6.1 Observing the Universe |
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97 | (1) |
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6.2 The Distances of Astronomical Objects |
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98 | (11) |
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6.2.1 The parallax method |
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98 | (3) |
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6.2.2 Main-sequence stars |
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101 | (2) |
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6.2.3 Using Cepheid variables |
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103 | (2) |
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105 | (1) |
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106 | (2) |
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6.2.6 Using supernovae as standard sources |
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108 | (1) |
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6.3 Hubble and the Expanding Universe |
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109 | (4) |
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Chapter 7 The Ages of Globular Clusters and Young Stars |
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113 | (16) |
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7.1 Early Material in the Universe |
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113 | (1) |
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114 | (3) |
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7.3 The Birth, Life and Death of a Star |
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117 | (6) |
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7.3.1 Collapse to the main sequence |
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118 | (2) |
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7.3.2 The Final Journey to Obscurity |
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120 | (3) |
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7.4 The Duration of the Main Sequence and the Age of Globular Clusters |
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123 | (1) |
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7.5 The Age of Evolving Young Stellar Objects |
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124 | (5) |
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Chapter 8 The Age of the Solar System |
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129 | (24) |
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8.1 A Brief Description of the Solar System |
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129 | (1) |
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130 | (2) |
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8.3 Radioactive Dating: A Simple Procedure |
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132 | (2) |
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134 | (1) |
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8.4 Some Important Decays for Age Determination |
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134 | (1) |
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8.5 Rocks, Grains and Minerals |
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134 | (2) |
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8.6 Examples of Dating Using Radioactive- Decay Systems |
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136 | (6) |
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8.6.1 The rubidium > strontium system |
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137 | (1) |
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8.6.2 A mathematical treatment of the rubidium > strontium system |
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138 | (2) |
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8.6.3 Uranium > lead and thorium > lead |
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140 | (1) |
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8.6.4 The mathematics of the leadlead isochron |
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141 | (1) |
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142 | (4) |
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8.8 The Mass Spectrometer |
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146 | (2) |
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8.9 The Age of the Solar System |
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148 | (5) |
Ages on Earth |
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Chapter 9 The Age of the Continents |
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153 | (10) |
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153 | (1) |
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9.2 The Evidence for Continental Drift |
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154 | (1) |
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9.3 The Mechanism of Continental Drift |
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155 | (5) |
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160 | (1) |
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9.5 Defining the Age of Continents |
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161 | (2) |
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Chapter 10 The Ages of Fossils |
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163 | (14) |
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163 | (3) |
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166 | (2) |
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10.3 Fossil Ages Determined from Surrounding Rocks |
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168 | (3) |
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10.4 The Use of Electron Spin Resonance (ESR) |
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171 | (3) |
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10.5 Fission Track Dating |
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174 | (1) |
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10.6 What is Learned from the Dating of Fossils? |
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174 | (3) |
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Chapter 11 The History of Life on Earth |
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177 | (26) |
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11.1 The Hadean Era (4,500-3,800 Ma BP) |
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177 | (1) |
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11.2 The Archaean Era (3,800-2,500 Ma BP) |
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178 | (1) |
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11.3 The Proterozoic Era (2,500-543 Ma BP) |
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178 | (1) |
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11.3.1 The Ediacaran period (600-543 Ma BP) |
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178 | (1) |
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11.4 The Paleozoic Era (543-251 Ma BP) |
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179 | (8) |
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11.4.1 The Cambrian period (543-488 Ma BP) |
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179 | (2) |
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11.4.2 The Ordovician period (488-444 Ma BP) |
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181 | (1) |
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11.4.3 The Silurian period (444-416 Ma BP) |
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182 | (1) |
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11.4.4 The Devonian period (416-360 Ma BP) |
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183 | (2) |
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11.4.5 The Carboniferous period (360-299 Ma BP) |
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185 | (2) |
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11.4.6 The Permian period (299-251 Ma BP) |
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187 | (1) |
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11.5 The Mesozoic Era (251-65.5 Ma BP) |
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187 | (5) |
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11.5.1 The Triassic period (251-200 Ma BP) |
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188 | (1) |
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11.5.2 The Jurassic period (200-145 Ma BP) |
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189 | (2) |
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11.5.3 The Cretaceous period (145-65.5 Ma BP) |
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191 | (1) |
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11.6 The Cenozoic Era (65.5 Ma BP to Present) |
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192 | (11) |
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11.6.1 The Tertiary period (65.5-1.8 Ma BP) |
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192 | (7) |
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11.6.1.1 The Palaeocene epoch (65.5-56 Ma BP) |
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192 | (1) |
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11.6.1.2 The Eocene epoch (56-34 Ma BP) |
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193 | (2) |
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11.6.1.3 The Oligocene epoch (34-23 Ma BP) |
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195 | (1) |
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11.6.1.4 The Miocene epoch (23-5.3 Ma BP) |
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196 | (1) |
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11.6.1.5 The Pliocene epoch (5.3-1.8 Ma BP) |
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197 | (2) |
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11.6.2 The Quaternary period (1.8 Ma BP to present) |
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199 | (6) |
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11.6.2.1 The Pleistocene epoch (1.8 Ma-11,500 years BP) |
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200 | (1) |
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11.6.2.2 The Holocene epoch (11,500 years BP to present) |
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201 | (2) |
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Chapter 12 The Ages of Archaeological Remains |
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203 | (22) |
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12.1 Archaeology and Palaeontology |
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203 | (1) |
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12.2 The Occurrence of Carbon-14 on Earth |
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204 | (1) |
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12.3 The Techniques of Radiocarbon Dating |
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205 | (3) |
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12.3.1 Removing contamination and preparation of samples |
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206 | (2) |
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12.4 The Beta-Counting Method |
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208 | (7) |
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12.4.1 Numerical aspects of beta-counting |
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210 | (2) |
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12.4.2 Sources of error in beta-counting |
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212 | (3) |
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12.5 The Accelerator Mass Spectrometry (AMS) Method |
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215 | (1) |
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12.6 The Role of Dendrochronology and Similar Techniques |
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216 | (5) |
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12.7 Thermoluminescence Dating |
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221 | (4) |
Index |
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225 | |