104 • WYNNE : GEOLOGY OF KUTCH. [PAET II. 



The sharp crush along this anticlinal flexure may have been relieved 

 by faulting parallel to, or partly coincident with, 



Fault ? , . . ■, , , , . 



its axis; but this is obscure, the rugged detritus 

 from the cliff concealing its foot, and all trace of the rocks to the north- 

 ward being lost under the unbroken surface of the Runn. 



Similarly to other antielinals in Kutch this one has au undulating 

 axis, depressions in which give the outer beds a tendency to fold over 

 it at the ends of the island ; while at the foot of the long southerly 

 inclination, they commence to roll again, forming parts of minor anti- 

 clinal and synclinal curves. 



The south slopes of the hills take their inclinations from those 

 of the strata dipping in that direction at angles seldom higher 

 than from 3° to 5°, and rising gradually up to heights of more than 

 500 feet. 



Taking the height of the cliffs as nearly representing the thickness 



of the rocks, the section here may have a depth 

 Thickness. 



of 500 feet ; for although a northerly dip is occa- 

 sionally seen, all the bolder precipices exhibit only the apparently 

 horizontal outcrops along the axial line. 



The lowest beds seen beneath the cliffs are rugged and lumpy 



shales occurring as a thick band with highly 

 Lowest beds. n -to ■ ■ d n i i 



fossiliferous layers containing numbers ot Coroula 



lyrata, Sow., a fish tooth, and some other fossils. 



Over these, and forming the more inaccessible portions, are thick bands 

 of warm-coloured yellowish sandstone, sometimes containing quartzite 

 pebbles and pieces of metamorphic rocks, and above all come harder, 

 finer and more fossiliferous beds, very much resembling, but rather 

 less calcareous than, those of the Putchum. These form all the long 

 southern slopes, and contain numerous bivalves, including Corlula, 

 ( 104 ) 



