The Quarterly journal of the Geological Society of London . The dry-season water-gully is 20 feet deepat the line of section,but sinks to 50 or 60feetfarther 192 . MR. G. W. LAMPLUGH ON THE [May I907, each other, until the walls are almost vertical; and finally thegorge is narrowed to a profound cleft, 300 feet deep and only15 to 20 feet wide at the bottom and about as many yards wide atthe top (see PI. XV). At this gloomy spot, which we have namedKalongas Cleft,1 the gorge turns at right angles and holds asombre, cliff-bound water-pool. Into this pool the Karamba, whenshrunken with


The Quarterly journal of the Geological Society of London . The dry-season water-gully is 20 feet deepat the line of section,but sinks to 50 or 60feetfarther 192 . MR. G. W. LAMPLUGH ON THE [May I907, each other, until the walls are almost vertical; and finally thegorge is narrowed to a profound cleft, 300 feet deep and only15 to 20 feet wide at the bottom and about as many yards wide atthe top (see PI. XV). At this gloomy spot, which we have namedKalongas Cleft,1 the gorge turns at right angles and holds asombre, cliff-bound water-pool. Into this pool the Karamba, whenshrunken with the drought, makes a sideway leap from the plateau ;but when flooded it must pour over the terminal wall in a terrificcascade occupying the whole breadth of the chasm. Between thewater-pool and the lip of the shallow upper valley, the basalts andamygdaloidal breccias which form the precipice are sliced trans-versely to the valley by several vertical planes of fracture andcrushing, with anastomosing branches, which have been gouged outby the stream into a series of deep riffies, as shown in the section,fig. 7 (p. 190) and birds-eye view, fig. 8 (p. 191). At the


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Keywords: ., bookcentury1800, bookdecade1840, bookidquarte, booksubjectgeology