|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy >
Vol.XX, No.1 >
Two Kinds of Garnet Amphibolites in the Momose-Mizunashi District, Hida Metamorpic Belt, Central Japan
| Title: | Two Kinds of Garnet Amphibolites in the Momose-Mizunashi District, Hida Metamorpic Belt, Central Japan |
| Authors: | Inazuki, Tsuneo Browse this author |
| Issue Date: | Mar-1981 |
| Publisher: | 北海道大学 |
| Journal Title: | 北海道大学理学部紀要 |
| Journal Title(alt): | Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy |
| Volume: | 20 |
| Issue: | 1 |
| Start Page: | 21 |
| End Page: | 33 |
| Abstract: | The mode of occurrence and chemical composition of garnet amphibolite in the Momose-Mizunashi district of the Hida Metamorphic Belt are described. The masses of garnet ampibolite form thin fusiform bodies whose occurrence is concordant with surrounding pelitic and basic gneisses. Formation of garnets is inferred to depend on chemical speciality of the original rocks such as high ΣFeO/MgO and low CaO/Al2O3, ratio. They are classified into two kinds of garnet amphibolite according to CaO content in garnet, i.e., one comparatively low in the CaO content, and the other rather high in the CaO content. The occurrence of Ca-rich almandine amphibolite seems to imply that the metamorphic condition in the Momose-Mizunashi district belongs to slightly higher pressure type than most prevailing metamorphic conditions in the Hida Metamorphic Belt. |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/36705 |
| Appears in Collections: | Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy > Vol.XX, No.1
|
|
