Bulletin of the Geological Survey of Japan Vol.49 No.4 (1998)

Cover photograh | Table of Contents |

Cover photograh

Lamprophyre dyke which cuts Sangun metamorphic rocks at the coast of Hofu, Yamaguchi Prefecture

Main constituent minerals of the lamprophyre are hornblende, plagioclase and biotite. The Sangun metamorphic rocks in the Hofu area were thermally metamorphosed by Cretaceous granitic rocks after the regional metamorphism.

(Photoed by Takayuki SAWAKI)

Table of Contents

Title	Author	PDF
Improving Bulletin of the Geological Survey of Japan: Expansion of description category and establishment of the GSJ Bulletin Award	Tetsuro NODA (143-145)	49-04_01.pdf(402KB)
Strains, elastic-wave velocities, and acoustic emissions during the creep of granitic rocks	Koji MASUDA (147-155)	49-04_02.pdf(985KB)
Origin of scoria in the Miocene marine sequence in the Boso　Peninsula, central Japan and its tectonic significance	Masaki TAKAHASHI (157-177)	49-04_03.pdf(6,494KB)
Thalassiosira castanea, a new diatom species useful for the Late Miocene diatom biostratigraphy in the North Pacific	Fumio AKIBA and Yukio YANAGISAWA (179-185)	49-04_04.pdf(1,573KB)