FAULTS AXD DYKES. 37 



one of the clearest cases of entire overlap in the field. I need not al- 

 lude to other localities, specially where this circumstance of overlap 

 receives confirmation. A look at the map will suffice to indicate where 

 the same feature is repeated. 



The thickness of this group is not great. Three or perhaps two 

 hundred feet would probably be its maximum vertical development. 

 The Lower Panehets are far thicker. 



Faults and Dykes. 



Faults. — The number of faults is less than I expected. One only 

 is well defined — along the south boundary of the Chano basin. I 

 have already alluded to the mechanical evidence of its existence. It 

 ends abruptly, or seems to do so, near Bahka. In the Hoharu there is 

 not very good proof of its presence, the only indication being a slight 

 break in the sandstones along the line of its strike. The other faults 

 are very insignificant, and require- no special reference to be made to 

 them. 



By Joes. — There is an extraordinary absence of trappean intrusion 

 amongst the rocks of the field, and the dykes which are seen are 

 not traceable for any length. I met with only four exposures, — one 

 near Balia Beltu, another south of Nowa Khap, a third in the Gonda 

 river, near its junction with the Chundru, and a fourth north of Sidpa. 

 The efiect of decomposition is seen on this dyke. The trap becomes 

 a soft red rock with bundles of crystals tangled in it. 



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