THE GEOLOGY OF WORLI HILL. CSo 



Owing to its hardness and brittleness a very restricted economic use is being 

 made of the basaltic trap. It is being quarried to a small extent for use as 

 rubble and metal in the foundations of buildings. For road making the metal 

 is not quite suitable being too sharp. The face of the hill is however being ex- 

 tensively quarried to procure spoil for filhng the adjoining low lands of the Hats. 

 The Western India Brick Factory was started at the foot of the hill to utihze 

 the moorum for brick making, but the attempt has not so far proved success- 

 ful. 



Quarry Face, Woili Hill. 

 II Below this thick mass of moorum and trap occur the highly interesting 

 sedimentary deposits. From their characteristic and persistent fossil, the trog, 

 it is evident that the beds were deposited in fresh water. t^e previous 

 investigators Dr. Carter is the only one who has given us a fuU and detail^ 

 description of the beds as they appeared at the Love Grove cut of the «huces 

 and of the fossils found in them by himself and Dr. Leith. It 'W be sU^^^^^^^ 

 here that in view of the extensive quarrying operations ^1^^* ^^;;;,;;;^""^^ 

 taken place, whereby a face of the beds about 500 f . m length has been 

 exposed, Dr Carter's description is true only of the cut o the ^I^^. J'>^ J^^^^^ 

 now opened out are about 28 ft. above the ^f n Jevel of the ^^^ wh ^^^ /^/^ 

 Love Grove cut they are generally below it. It has not be^n possible to trace 

 in the present beds the layers which according to Cart jn^^^^^^^ 

 tubes filled with crystalline quartz nor the layer f ^^ *J "f^^^^^^f t\e S 

 and which " is almost wholly composed of the casts o the «beUs °f ^be 1 ttl 



entomostracious crustacean animals ^^^l^^ '=7P'^^^«;„, „^f ^^e^pkce would 

 no description of these aqueous deposits ^^J^^^^^ ^^^^^ "^ "^^ P' In gLral 

 wholly apply to another place even though only ^^ew yards away. In g 

 the beds dip about 15° to the west. Passing under the biU bey j^^PF^ 

 the west just under the high tide level, looked at fom a very s 

 the alternatmg black and light coloured bands in * J^/"™ J^^^^^^ di^ebse. 

 distinct and continuous, but in the ^^J^^^'^^^^^^'^'^lX^^ 

 an extraordinary diversity of material. The layers vary g j 



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