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( 154 ) 



W 



.Si 13 



MEDLICOTT, SHILLONG PLATEAU, 



very irregular ridges^ with hardly 

 any level ground. The orogra- 

 phical feature that has been des- 

 cribed along the south-eastern 

 i boundary of the plateau corres- 

 ^ ponds closely with the stratigram 

 ■^ phical structure : the longitudinal 

 J valleys along the flanks of the 

 I Burrail ridge are on or near the 

 g axis of a great unicHnal (or semi- 

 anticlinal) flexure, along which 

 the rocks of the plateau are bent 

 2 •- -s down into the area of disturbance. 



fl' p ^ The same stratigraphical feature 

 ■? « .2 

 5§ :S 3 continues all along the south face 



g fiji -«" of the plateau ; but from Jynteg-pm' 



.s S i" westwards the ridges formed by 



J ?2 J the contorted strata are only re- 



'1 ^^ presented in a very subordinate 

 H J g way, and are confined to a narrow 

 E-* I zone along the base of the table- 

 (J- o land scarp, which rises abruptly 

 •2 .„ from the plains for a length of 

 " I;g about fifty miles ; when again low 



1 I flanking hills occupy a wide space. 



OS 



^ There is evidence to show that in 

 this westerly direction there is a 

 gradual decrease of the phenomena 

 of disturbance. A general section 

 (Fig. 1) is appended, to which 

 reference may frequently be made. 





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