摘要
太阳活动,太阳系各行星的集中,地壳各种变迁,火山活动,地幔对流,火山喷发,地壳的剥蚀、沉积和覆没均呈现反反复复的周期性、相似性、节奏性和韵律性。它们是地质年代的形成和演化条件。本文根据地质年代(t_n)(单位百万年)和地质年代序号(n)
Geological time(t),unit:million years(m.y.)and the geological time stratification No. (n)are related to each other by the formula:
tn =2 (1.0243524)n W.B.Harland's geological time scale is included by the formula.
When t0 =2. then it is Quaternary Pleistocene; When t197 =228.855, then it is T3;
When t39 =5.112, then it is N2;
When t72 =11.308, then it is N13;
When t82 =14.384, then it is N12;
When t104 =24.425, then it is N11;
When t116=32.596, then it is E32;
When t122 =37.658, then it is E31;
When t127 =42.472, then it is E23;
When t134, =50.263, then it is E22;
When t138 =55.341, then it is E21;
When t142 =60.932, then it is E12;
When t145 =65.492, then it is E11;
When t162 =98.59, then it is K2;
When t178 =144.884, then it is K1;
When t183 =163.406, then it is J3;
When t189 =188.784, then it is J2;
When t194 =212.918, then it is J1;
When t199 =240.137, then it is T2;
When t200 =245.985, then it is T1;
When t202 =258.111, then it is P2;
When t206=284.187, then it is P1 ;
When t211 =320.517, then it is C2;
When t216 =361.492, then it is C1;
When t217 =370.295, then it is D3;
When t219 =388.549, then it is D2;
When t221 =407.704, then it is D1;
When t224=438.221, then it is S;
When t226 =459.824, then it is O3;
When t228 =482.493, then it is O2;
When t230 =506. 279, then it is O1;
When t236 =584.906, then it is Cambrian period;
When t249 =799.702, then it is Z(sinian).
By the way,N.J.Snelling's Geologic Time Scale for Phanerozoic Eon,1987,is included by the formula, too. tn =1.6 (1.0243524)n Geologic Time Scale for Phanerozoic Eon
(N.J.Snelling,1987) Formula
Period Epoch Age Ma n tn Period Epoch Age Ma n tn
Quarternary 1.6 0 1.6 Carnian 230 207 232. 8
Neogene Pliocene 5.3 50 5.32 Middle Ladinian 235 208 238.5
Miocene 23 111 23. 1 Anisian 240 209 244. 3
Paleogene Oligocene Chattian 27 117 26. 7 Early Scythian 250 210 250. 3
34 127 33. 9 Permian Late Tatarian 255 211 256.4
Eocene Barton ian 39 133 39. 2 Kazanian 260 212 262.2
Lutetian 45 139 45. 3 Early Kungurian 270 213 269.0
Ypresian .53 146 53. 6 Artinskian 214 275.6
Paleocene Thanetian 59 150 59. 0 Sakmarian 280 215 284.7
Dan ian . 65 154 65. 0 Assclian 300 217 296.2
Cretaceous Late Maastrichtian 72 158 71. 6 Carboniferous Silesian Stephanian 305 218 303.4
Campanian 83 164 82. 7 Westphalian 315 220 318.4
Santonian 86 166 85.8 Namurian 325 221 326. 1
Coniacian 88 167 88. 9 Dinantian Viscan
Turonian 91 168 91. 1 Tournaisian 355 225 359. 1
Cenomanian 95 170 95. 6 Devonian Late Famennian
Early Albian 107 175 107. 8 Frasnian 375 227 376.8
Aptian 114 177 113. 1 Middle Givetian
Barremian 110 178 115. 9 Eifelian 390 228 386.0
Hauterivian 120 180 121. 6 Early Emsian
Valanginian 128 182 127. 6 Siegenian 229 395.4
Barriasian 135 184 133. 9 Gedinnian 410 230 405.0
Jurassic Late Tithonian 139 186 140. 5 Silurian Pridoli 231 414.8
Kimmeridgian 144 187 143. 9 Ludlow 424 232 424.9
Oxfordian 152 189 151. 0 Wenlock 428
Middle Callovian 159 191 158. 4 Llandowery 438 233 435. 3
Bathonian 170 194 170. 3 Ordovician Aghgil 446 234 445.9
Bajocian 176 195 174. 4 Caradoc 455 235 456.8
Aalenian 180 196 178. 7 Llandeilo 460 236 467.9
Early Toarcian 188 198 187. 5 Llanvirn 470 237 479. 3
Pliensbachian 195 200 196. 7 Arenig 490 238 490.9
Sinemurian 201 201 201. 5 Tremadoc 510 240 515. 1
Hettangian 205 202 206. 4 Cambrian 530 24 1 527.7
Triassic Late Rhaetian 210 203 211. 5 Atdabanian 550 243 553.7
Norian 220 205 221. 9 Tommotian 570 244 567.2
出处
《贵州地质》
1989年第2期172-174,共3页
Guizhou Geology
