CONTENTS. 



PAGE 



INTRODUCTIOX 1 



PART I. General Outline of the Geologic Structure of South- 

 west Japan 2 



§ I. GeogRxVphic and Geologic Sit l^atiox of Southwest Japax. 2 

 Ä. The Peri-Tangliai tectonic line and the (/encsis of the Rt/û- 



hyû arc 5 



«) East coast of Korea 6 



/j) Faulting of the axis oï Soutl) Japan 6 



c) IMonoclinal Ejû-kyû arc 7 



(1) Taiwan as a prolongation of the livû-kyû arc . . 9 

 e) Essential characteristics of the llvû-kyû volcanic chain. 10 

 B. The principal formations and main geologic structure of South- 

 vest Japan 10 



Tlie zones of «) Gneiss, 11 — h) Sambagawa-Mikabn 

 Series, 11 — e) Cretaceous, 11 — d) Paleozoic graywackc, 

 11— c) Mesozoic sandv slate, 11—/) Tertiary, 12— 



g) Tiie lapilli plateau, i.e.. Plateau Formation . . . . 12 



§ II. Ox THE FORMATIOX OF THE TrEXCH BaY OF KaGOSHIMA. 13 



A. General geology of the environs of Kagoshima Bay . . . . 13 



o) Ash-stone (an Aso lava) . . . . 13 



h) Origin of lapilli 14 



c) Ash-stone and lapilli bed in tJie environs of the city 



of Kagoshima 14 



d) The Seto region on the (.>pposite coast 16 



e) Early Diluvial age of the ' lapilli plateau ' 17 



/) How Kagosliima Bay was formed 17 



g) The geology and dislocation of the Kaimon area. . . . 17 

 /() Concluding remarks on the formation of Kagoshima 



l^av 18 



