Valley of Oodipoor. 281 



imparted to them a local bearing in almost every possible direc- 

 tion. Their position is still vertical or nearly so, and, considered 

 on the great scale, the rocks of this position may be described 

 as forming a band or belt, which, though exhibiting many in- 

 ternal signs of disturbance and derangement, still follows the 

 same general direction as the strata of the bounding formations 

 on the right and left, i. e. from N.N.W. to S.S.E. 



A remarkable instance of partial deviation from the usual 

 line of bearing it may be worth while to describe. In the 

 channel of the Bedus, about a couple of miles north of the city 

 of Oodipoor, we have a series of rocks, consisting of argillaceous 

 schists of a compact texture, alternating with distinctly stratified 

 greenstones, greenstone schists, and the isomorphous rocks de- 

 scribed as intimately connected with them. This series may be 

 traced along the course of the river, the channel of which it 

 crosses obhquely, and is afterwards lost under the soil. The 

 strata are nearly vertical; they vary in breadth from a few 

 inches to three or four feet; their direction is E.N.E. and 

 W.S.W., and the strata seams are very distinct. The argilla- 

 ceous schists have a fine schistose texture ; the other rocks are 

 characterised by cleavage lines, which occur at regular intervals, 

 and impart to them a slaty structure larger or finer in different 

 strata. The cleavage lines are perpendicular to the horizon, 

 but run at right angles to the direction of the strata, i. e. from 

 N.N.W. to S.S.E. This remark holds good in respect to all 

 of the rocks of this series ; the schistose structure even of the 

 narrowest strata (which latter are very generally composed of a 

 very fine slate of a uniform blackish colour) being at right 

 angles to the direction of the strata seams. 



Some of the greenstones exhibit the singular appearance of a 

 threefold division and structure. We have, first, the regular 

 strata seams ; next the cleavage lines, at right angles to these ; 

 and, lastly, an appearance resembling horizontal stratification, 

 which depends on the tendency of these rocks to desquamate on 

 exposure to atmospheric influences. These phenomena are at 

 first sight somewhat perplexing ; the cleavage lines follow a di- 

 rection parallel to the general line of bearing of the strata of 

 the neighbourhood, and might easily be mistaken for strata 

 seams : a more attentive examination, however, will at once en- 



