 | | Journal (article/letter/editorial) | | J. Japan. Assoc. Min. Petr. Econ. Geol. 74, 311-319, 1979. GEOCHEMISTRY OF MAJOR AND RARE EARTH ELEMENTS...DIFFERENTIATED ALKALINE DOLERITE SHEET IN ATSUMI DISTRICT, NORTHEASTRN JAPAN HIROKAZU FUJIMAKI* Geological...Tokyo and HAJIME KURASAWA Geological Survey of Japan, Hisamoto 135, Kawasaki Major and rare earth elements...alkaline dolerite sheet in the Atsumi district, northeastern Japan. The parental magma of the dolerite would...contents in monzonitic rocks are same as those in the dolerite main body, the monzonitic rocks might not be late |  | | Journal (article/letter/editorial) | | Nd isotopes through time near the Japan Sea in northeastern Japan S. N o h d a * a n d G . J . W a s...limited area in the "Green Tuff" region, northeastern Japan, and in adjacent areas. Two ultramafic inclusions...this area due to the back-arc spreading of the Japan Sea, we identify two different stages: the pre-opening...Sangyo University, Kamigamo, Kita-ku, Kyoto-603, Japan. 0012-821X/86/$03.50 © 1986 Elsevier Science Publishers...continental contribution (from the older basement of Japan) increasing with the distance from the Pacific boundary | | | Journal (article/letter/editorial) | | Sumiyoshizaki alkali dolerite sheet in the Atsumi district, Yamagata Prefecture, 徐 The petrological...Sumiyoshizaki alkali Japan Hong)* dolerite sheet in Atsumi area, Northeast Japan, has been carried out...the chilled margin, dolerite up to the middle of the body and analcime dolerite to the top. Many differentiated...syenite. The main constituent minerals of the dolerite are olivine, clinopyroxene, ite and ilmenite,...veins magnet Major elements abundances of the dolerite, especially Mg, change from the base to the top |
|
