6 BLAXFORD : GEOr.OGY OF WESTERN SIND. 



No. 6) correctly. From Gaza Pir he traversed the alluvial plain to 

 the Gaj (Gauj), where he examined only the outer hills composed of 

 pliocene (Manchhar) conglomerates, clays, and sandstones, and noticed 

 that they rested on the non-nummulitic formation, which he correctly 

 identified with the rock of Karachi. He found bones in the conglo- 

 merates, and made an acute remark upon the resemblance between the 

 beds in Sind and those of the Siwalik hills, near Nahan. From the Gaj 

 he marched to Sukkur, across the alluvium of the Indus. 



The following is the classification adopted for the formations in Sind 



by Captain Vicary, a classification which has 



Vieary's classification. ^^^ W quoted in geological works. The 



series is given in descending sequence, and opposite to each group is 

 marked the supposed equivalent in the system adopted by the survey :— 



Groups of Captain Vicary. Geological survey groups. 



1. Conglomerate 



2. Clays and sandstone . 



3. Upper bone-bed 

 4£Sandstone ; fossils rare 



5. Lower bone-bed 



6. Coarse calcareo-arenaceous rock with CV/-~) 



titer ea exoleta and C. exarata; Spatangi, V Gaj (rniocene). 

 no nurnniulites. j 



7. Pale arenaceous limestone with Hypponyces, \ Nari (?) (Oligocene or upper 



nummulites and Charoidece. ) Eocene). 



8. Nummulitic limestone of the Hala range . Khirthar (Eocene). 



9. Black slates, thickness unknown . . (?) 



Considering how rapid was Captain Vieary's march, and how small 

 a time — less than two months — he devoted to an examination of the 

 country, it is remarkable how good an idea he formed of the relations of 

 the beds. That he should occasionally have failed to identify the 

 groups correctly, was only to be expected in a hurried journey through 

 new formations, many of them very ill-exposed, for he was unable to 

 follow the groups, or even to keep to the parts of the country where the 

 rocks were well seen. It is indeed rather surprising, in the face of his 

 repeated and perfectly accurate observation as to the position of his 

 ( 6 ) 



Manchhar (pliocene and per- 

 haps upper rniocene). 



