Jour. Sc.Coll. Vol, XVI. Art.ll.PLIV. 



LEGEND. 



I ~ I Palaeozoic slate, sandstone, and pyroKenitn or amphibolite. 



IB Palaeozoic compact quartzite. 



^^B Palaeozoic Hmestone. 



1 I Tertiary sandstone with a little sliale and conglomerate. 



I^^l Tertiary limestone. 



I I Tertiary agglomerate-tuff. 



I I Raised coral reef. 



I I Alluvial deposits. 



iii Granite. 



^^1 Diorite. 



GEOLOGICAL MAP 



Yaeyama Subgroup 



Saki-shima Group. 



SCALE 1 : 200000. 



^^1 Quartz- porphyry und liparite. 



m Andesit«. 



IHJ Fropylit«. 



/ Ckjal. 



QJ 



Yoshiwo,ra, Geologic Structure of the Riukiu Cur\ 



