The Quarterly journal of the Geological Society of London . ent my map, writes me (Nov. 6th, 1897) :— Your work shows in full clearness the picture of a curved, complex sjncHuesunk into Archaean rocks between faults. ^ It may be noted that these dislocations are caused by strike-faults; nume-rous cross-faults have also been observed, but they produce displacements of anormal type. Yol. 54.] WITWATERSRAND AND OTHER DISTRICTS IN S. TRANSVAAL. 97 the same character, and possibly identical with the fault jnstdescribed, exists in the eastern portion of the Simmer & JackMine, and extends into the Ro
The Quarterly journal of the Geological Society of London . ent my map, writes me (Nov. 6th, 1897) :— Your work shows in full clearness the picture of a curved, complex sjncHuesunk into Archaean rocks between faults. ^ It may be noted that these dislocations are caused by strike-faults; nume-rous cross-faults have also been observed, but they produce displacements of anormal type. Yol. 54.] WITWATERSRAND AND OTHER DISTRICTS IN S. TRANSVAAL. 97 the same character, and possibly identical with the fault jnstdescribed, exists in the eastern portion of the Simmer & JackMine, and extends into the Rose Deep. This fault strikes to thesouth-east, and dips south-west at an angle of 60°. The trace ofthe fault-plane at the surface makes an angle of 37^ with the reef-outcrop. The horizontal displacement is 650 feet, and the verticaldisplacement about 400 feet. A considerable extrasion of igneousmatter has taken place along the plane of faulting (see fig. 5). Eig. 5.—Reversed fault hy the Great Simmer Djhe,in the Rose Deep, Witwatersrand. cX- .^^ ^. *- .-vX,•.--, .;>: < . t \ *- V v-^//
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Keywords: ., bookcentury1800, bookdecade1840, bookidquarte, booksubjectgeology
