山口縣美禰郡秋吉地方の古生層中の二, 三の新事實に就いて

抄録

This is a brief preliminary report with special reference to some new facts found very recently in the Palaeozoic of the Akiyosi District., I) The Palaeozoic of the Akiyosi district is divided by the late Y., OZAWA into three complexes in ascending order : 1) graywacke beds, 2) Akiyosi limestone and 3) shale, sandstone and chert, each with small lenses of limestone., All these complexes belong to the Permian and Carboniferous, according to the fossils they contain., II) The Akiyosi limestone is probably not upset as a whole as once thought by OZAWA, but in part in normal order., III) The graywacke beds and shale beds are in normal order and not upset, so far as evidences shown by cross bedding are concerned., IV) The Akiyosi limestone and graywacke beds are probably in contact by a fault with a general trend NE-SW, coinciding with one of chief tectonic lines in other districts of Tyugoku., OZAWA's well known interpretation of the geological structure of the Akiyosi district seems to me to need certain modification on the several new facts cited above.,