10 GEOLOGY OF SIND. 



in this direction. Tliere are, however, some remarkahlc and interest- 

 ing points connected with the sections of similar rocks examined by 

 Dr. Carter in Arabia.^ Compare, for instance, the sections at Muskat, 

 Masira, and Marbat. 



At Muskat the section is (abridged from the two sections given by 

 Dr. Carter). 



Coarse limestone with foraminifera. 



Siliceous limestone. 



Argillaceous strata with gypsum, calcareous sandstone, variegated 

 sands, and pebble beds. 



Greenstone and Serpentine. 

 At Masira — 



Compact limestone with foraminifera ... ... 100 feet. 



Coarse yellow limestone ... ... ... ... 50 „ 



Sand, and red and green arenaceous clays traversed 



by veins of gypsum ... ... ... ... 50 „ 



It does not appear that the base of the last named bed was seen, 

 so this is not necessarily the total thickness in the neighbourhood ; the 

 1 imestone is said to rest on diorite. 

 At Marbat— 



White limestone strata containing alveolina, besides 



other fossils ... ... ... ... ... 1,400 feet. 



Argillaceous strata of a red colour ... ... 300 „ 



Coarse micaceous sandstone of a yellow colour be- 

 coming finer as we ascend ... ... ... 1,700 „ 



From the sketches these beds possibly rest upon igneous rocks, 

 stated to comprise granite, greenstone, and diallage rock or euphotide. 



* Memoii- on the geology of the south-east coast of Arabia. Journal Bombay Branch 

 Royal Asiatic Society — IV, 21, and Geological Papers on Western India, p. 551. 



