486 



INDEX 



Gape system, 114-65. 

 Cardium, 333. 

 Cassiterite, 31, 479. 

 Gave sandstone, 217-19. 

 Cederbergen, 2, 16, 120, 131, 133. 

 Cederberg folds, 16, 443. 

 Ceratodus, 206, 217. 

 Chert, 61-2, 69, 83, 101. 

 Chonetes, 141, 152. 

 Cidaris, 323, 336, 342. 

 Cladophlebis, 215, 295, 307. 

 Clanwilliam, 118, 133. 

 Clay-pellet conglomerate, 201. 

 Clays, 462. 



Cleithrolepis, 206, 242. 

 Climatic changes, 319, 396, 404 



452. See also Glacial beds 



etc. 



Coal, 463-67. 

 Coast-line, elevation of, 404-08. 



origin of, 457-59. 



- sinking of, 387, 457. 

 Coetzee's Poort, 46, 314. 

 Columnar structure in dolerite, 285, 



in tillite, 283. 

 Conularia, 154, 241. 

 Copper, 288, 467-69. 

 Cordaites, 199. 

 Cordierite, 32, 34-5. 

 Cretaceous system, 289-343. 

 Crocidolite, 92, 94-5, 460. 

 Cuculkea, 324. 



Cyanite, 57. 

 Cijdostigma, 159. 

 Cyclotosaurus, 207, 242. 

 Cynodonts, 254-55. 

 Gynognathus, 207, 255. 



Danceopsis, 206. 



Daniel's Kuil, 10, 89, 98. 



Darling, 28. 



De Beers Mine, 354. 



Devonian beds, 155-56, 428-29. 



Diabase, amygdaloidal, 70-4. 



- intrusive, 36, 45-7, 76, 113. 

 Diamonds, 469-71. 



- in diabase, 362. 



- in eclogite, 355, 362. 



- in gravels, 470-71. 



- in kimberlite, 354, 361, 469. 

 Diatomite, 471. 



Dicynodon, 207-09, 239, 241, 243. 

 Diorite, 37, 113, 278-79. 



Dolerites, 258-88. 

 acid variations of, 275-79. 



age of, 281, 444. 



later dykes, 275-79. 



- limits of distribution, 13, 260, 

 280, 444. 



metamorphism by, 281-84. 



rinc;-shaped intrusions, 268-69, 



273. 



petrography of, 273-79. 



scenery produced by, 262, 265, 

 270. 



weathering of, 285-87. 

 Doornbergen, 10, 99. 

 Drakensberg beds, 219-227, 446-47. 

 Drakensbergen, 221, 451. 

 Dunbrody, 295-96, 301. 



Dwyka series, 167-93, 433-37. 



fossils in, 192-93. 



lower shales, 178. 



probability of coal in, 191-92. 



upper shales, 188-89. 



white band, 188-89. 



Dwyka tillite, 167-88, 433-37. 



(causes producing glacia- 



tion), 438-39. 



cleavage in, 180-82. 



direction of glaciation, 



184-85. 



quartzites in, 183. 



striated pavements in, 177. 

 - striated surfaces below, 



171-72. 



source of boulders in, 186-87. 



thickness of, 179, 187. 



unconformity below, 17-20, 



171-75, 187. 



Ecca series, 193-99. 



fossils of, 199. 



Eclogite, 355, 359. 



Eland's Vlei, 177, 180. 



Elliot, 219, 223. 



Embotyi group, 339-41. 



Endothiodon, 210, 251. 



Enon, 292, 302-03, 305-06, 366. 



Enon beds, 290-93, 308, 311-16, 319. 



fossils in, 303. 



Epidote, formed in granulites, 58. 



shales, 282. 



Erythrosuchus, 207, 242, 255. 

 Estheria, 208, 217-18, 309, 326. 

 Eurydesma, 241. 



