Ore Deposits in the Region of the Iimori Mine, with Special Reference to Stratigraphy and Geologic Structure:Collaborative Studies on Geology and Ore Deposits of the Region of the Iimori Mine, No. 2.

概要

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The stratigraphical position, structure and mineral composition of ores of the Iimori, Ozu, and Amana ore deposits are described. Folds of the schists in the region can be divided into two types. One has an axial plane parallel to the schistosity plane, and the other across the plane at high angles, accompanied by axial plane cleavage. Ore deposits are folded, in gereral, harmonious with the country rocks after both types of fold. The eastern part of the Iimori ore body, which is rather tabular in shape is located in "the Northern flexure zone" of "the Iimori syncline", while the western part in "the Ozu folded zone", where it is intensely affected by the two types of fold. Most of the field evidences suggest a syngenetic origin of the ore deposits in the area, presumably metamorphosed from exhalation deposits generically related to the submarine volcanism during the geosynclinal sedimentation.
資源地質学会の論文