On the Structure of Granitic Complex in the Northern Part of the Takanawa Peninsula, Ehimé Prefecture

Many authors, such as H. CLOOS, E. CLOOS, R. BALK and S. v. BUBNOFF, have asserted that the structural elements imprinted in an intrusive granite mass are directly related to the physical state within the granite and the mode of emplacement. This principle is well exemplified at the Takanawa peninsula.
The granite, including in part its finer facies, in the northern part of the Takanawa peninsula is probably an extension of the Tôwa- granite in the Yanai region which is referred by Y. OKAMURA to the "Intrusive granites" (of H. H. READ) of the Ryôké granite series.
For the sake of a strong resemblance in appearance of each joint-system in the granite described, it was not always easy to discriminate one from the other, but by handling statistically the joint-systems, planar structures and the other structural elements the mode of emplacement of the granite was inquired and became obvious to a certain degree.
In view of the present knowledge, the writer wishes to make it clear that he considers that the granite in the northern part of the Takanawa peninsula occupies only a part of the southern half of a domed granite mass.