Geological magazine . thePre-Cambrian granitoid basis. 2. I also identify the quartz conglomerate at Tvvt Hill with, thatat Nebo. 3. I hold that the disagreement in dip of the conglomerate andshales, in the northern quarry at Nebo, is due to a fault, as shownin Fig. 3 in my paper (Geol. Mag. 1881, p. 197). The discord-ancy between tlie shales and conglomerate in the other or lowerquarry of Dr. Callaway is due to the crushing of the conformableoverlying shale during the movements of the underlying unyieldinggrits, but the apparent unconformity indicated by Dr. Callaway inhis section (Q. J. G. S
Geological magazine . thePre-Cambrian granitoid basis. 2. I also identify the quartz conglomerate at Tvvt Hill with, thatat Nebo. 3. I hold that the disagreement in dip of the conglomerate andshales, in the northern quarry at Nebo, is due to a fault, as shownin Fig. 3 in my paper (Geol. Mag. 1881, p. 197). The discord-ancy between tlie shales and conglomerate in the other or lowerquarry of Dr. Callaway is due to the crushing of the conformableoverlying shale during the movements of the underlying unyieldinggrits, but the apparent unconformity indicated by Dr. Callaway inhis section (Q. J. G. S. vol. xxxvii. 1881, pi. viii. fig. 6) does notexist. The divisional planes which he takes for bedding arejoints approximately parallel to the fault. To make this clear Igive a copy of Dr. Callaways section, Fig. 1, and my ownsection of the same quarry, Fig. 2. Fig. 1. Section across Lower (Southern) Quarry, S. of Nebo, Callaways Section (Q. G. J. S. vol. xxxvii. pi. viii. fig. 6*). ^___-^r-— _ a = Cambrian shalesFiff. 2 5 = Cambrian grit (called by Dr. Callaway Pre-Cambrian). Quarry. Section across lower (Southern) Quarry, S. of Nebo, Eobertss Section. Quarry.
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