192 



PKOF. P. II. 0]N T THE 



The description of the Corals has "been published in a volume of 

 the £ Palseontologia Indica;' and although the evidence regarding a 

 Pliocene marine fauna failed, there is no doubt about the former ex- 

 istence of Lower and Middle Tertiary coralliferous deposits in Sind. 



II. The Stratigraphical Position of the Series and of the Ossiferous 

 Manchha r Deposits. 



The detailed description of the geology of Western Sind is to be 

 found in the Memoirs of the Geological Survey of India, vol. xvii. 

 part 1 (1879), by \V. T. Blanford, F.R.S. &c, Deputy Superintendent 

 of the Geological Survey of India ; and it is therefore only necessary ■ 

 to explain those parts of it which relate to the general succession of the 

 stratigraphical series and the position of the strata yielding Corals. 



The mountain-ranges west of the Indus run nearly north and 

 south, in irregular parallel series. The longest range, the Khirthar, 

 is slightly curved, the concavity being to the east ; and it extends 

 from slightly south of 26° N. lat. to close to 28° Is T . lat. The Laid 

 range, more to the east, is nearly coincident with the sixty-eighth 

 parallel of east longitude, and extends from the Indus north of 

 26° NT. lat. to nearly a degree to the south. Other minor but 

 nearly north-and-south ranges occur; and the whole were com- 

 prised by MM. d'Archiac and Haime under the title of the Hala 

 range (a name unknown to the natives). 



The following is the list of geological formations in Western 

 Sind, and which are to be recognized in one or other of the moun- 

 tain-ranges * : — 



Group. 



Subdivisions. 



Approximate 

 Thickness. 



Age. 



Kemarks. 



Alluvial 



Manciiiiar... I 



Gaj 



Nam 



Khirthau . 

 Eanikot 



Upper 

 Lower. 



Upper 



Lower. 

 Upper 

 Lower. 



feet. 

 ? 



5000 ' 



3000-5000.., 



1000-1500.. 

 4000-G000 I 



Post-Tertiary. 



Pliocene 



Old Pliocene or 

 Upper Miocene. 

 Miocene 



Trap 



Cretaceous . A 



Cardita Beau- 

 monti beds. 



Sandstones . . 



Limestones 

 with Hip- 

 purites. 



100-1500 

 500-3000.. 



6000! 

 2000 



Oligocene. 



Nummulitic 



40-90... 



350-450 



700, 

 320. 



Lower Nummu- 

 litic. 



Deccan Trap. 

 Transition beds . . 



Cretaceous. 



Unfossiliferous. 

 Vertebrate remains. 



Coralliferous ; no 



Nummulites. 

 Unfossiliferous. 



Coralliferous, with 

 Nummulites garan- 

 sensis. 



Nummulitic lime 

 stone. 



Unfossiliferous. 



Fossiliferous. 



Corals and Nummu- 

 lites. 



Fossiliferous. 



Horizon not deter- 

 mined. 



From the Memoir by Blanford, p. 32, slightly modified. 



