3«) 



ART. 2 —S. VOSHIWARA 



V. THE SAKI-SHIMA GROUP. 



'I'he 8;iki-shima groii]) is divisible into two subgroups, Miyako 

 :in(l ^'at'ynma. tlie foruier lying tiir to the east of the latter. 



'Hit', Miijako Subgroup. 



This subgroup contains the islands of Miyako, Shimoji, Irabu, 

 Kurima, Ikema, Ogami, Tarama and Minna (Fig. 5). Ogami-jima 

 alone consists of Tertiary calcareous sandstone with shale, surrounded 

 by raised coral reefs; all the other islands are made up entirely of 



Tertiary sandstone 

 and shale- 



Raised coral reefs 



Alluvial deposits. 



Scale 1: 200000. 



Kurimajuna 

 Fig. 5. — Geological Map of the Miyako Subgroup excluding Tarama-jima and Miuna-jima. 



