Contents Menu

Geology of Oosima-gun,Yamaguti Prefecure.0n the Ryoke Metamorphic Rocks and Ryoke Grandiorites

Bulletin of the Faculty of Agriculture, Yamaguchi University Volume 7 Page 555-568
published_at 1956
Title
山口県大島郡の地質と岩石一領家変成岩類ならびに花崗閃緑岩類
Geology of Oosima-gun,Yamaguti Prefecure.0n the Ryoke Metamorphic Rocks and Ryoke Grandiorites
Creators Okamura Yoshihiko
Source Identifiers
Creator Keywords
山口県大島郡 地質 岩石 領家変成岩類 花崗閃緑岩類
The Ryoke metamorphic zone in this area is composed of banded gneiss, hornfels of gneiss, migmatic gneissose granodiorite and intrusive granite. The granodiorite mass is divided as follws: 1.Gamano gneissic granodiorite. 2.0kiura gneissic granodiorite. 3. Towa granodiorite. 4. Fine grained granite (dike or sheet). The structural feature of the Gamano and the okiura granodiorite is their general comformity with the foliation and liniation of the banded gneiss,although cross-cutting pegmatite,aplite vein and dikes are common,and locally more homogeneous granodioritic part cross the schistosity. As the result of local contamination by xenolithic basic rocks, the Gamanogranodiorite may vary to tonalite or quartz diorite. The Gamano and the okiura granodiorite show many phenamena which can be cited as evidence that they originated through process of migmatization ofmetasediments. The Towa granodiorite and the fine grained granite are interpreted as form directly by consolidation of magma,
Subjects
農学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学農学部
Date Issued 1956
File Version Not Applicable (or Unknown)
Access Rights metadata only access
Relations
[ISSN]0513-1715
[NCID]AN00244250
Schools 農学部