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ME. JUKES-BEOWNE AND PEOF. HAEEISON 



gritty layers, imparting a gritty character to them. The beds dip uni- 

 formly W.N.W., the average inclination being 25°, though the angle 

 seems to vary somewhat and there area few small faults. Above the bed 

 of grey sand there are white siliceous earths exposed for 30 or 35 feet. 

 Bath and Quintynes. — From this gully to the 16th milestone on 

 the railway the exposures of the white earths are similar to the 

 above, but the dip is less, about 8° or 10° W.N.W. At the 16th 

 milestone the railway cuts through the side of a hiU and shows 

 a section of about 70 feet of radiolarian earths, capped by an out- 

 lying patch of coral-rock. At the southern end of this section the 

 beds dip S.E. about 10°, but in a little distance this dip suddenly 

 increases to 80° and the beds are cut off by a fault. 



S.E. 



Pig. 2. — Section along Railway near Bath. 



N.W. 



[Distance : 145 yards.] 



Horizontal scale : 40 yards = 1 inch. Vertical scale : 200 feet = 1 inch. 



a. Siliceous earths, b. Brown layer, c. Coral-rock. T. Talus. F. Fault. 



A brown gritty layer, like that in Conset Gully, is seen on both 

 sides of the fault and proves its throw to be between 60 and 

 70 feet (see fig. 2). The Scotland Beds must be near the level of the 

 line on the north-west side of the fault, but are concealed by the 

 talus. They are, however, exposed over a small area of ground east 

 of Quintynes. 



The same portion of the Oceanic Series, including the brown 

 layer, is exposed in the cutting north of this tract, where the beds 

 dip at about 30° X.W. ; and a little farther on is another cutting which 

 shows an anticlinal curve in the same beds, with dips of 40° to S.E. 

 and 30° to N.W. 



Castle Grant and Chimhorazo. — The Oceanic Deposits form a 

 steep slope below the coral cliffs on Little Island and Castle Grant 

 estates. At the opening of the deep gully which separates these 

 two estates the coral-rock rests upon a soft, soapy, yellowish earth 

 which looks like a marl, but is purely siliceous and entirely free from 

 lime, whether combined as a carbonate or a silicate. A little lower 

 down red, pink, and yellow earths, of a similar nature, can be seen 

 in a pathway, and still lower a steep slope on Castle Grant estate 

 shows the following succession : — 



White siliceous radiolarian earth, with large globular concre- 

 tions of bluish chert from 6 to 12 inches in diameter, about 

 Gritty beds, consisting of radiolarian debris mixed with mine- 

 ral grains ; these beds include a layer of grey sand and one 



of brown marl 



Firm white calcareo-siliceous earth about 



feet 

 20 



10 



40 



