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Title: 母体層群にともなう超塩基性岩類の片理について
Authors: 橘, 行一
Authors (alternative): Tachibana, K.
Issue Date: 20-May-1964
Citation: 長崎大学教養部紀要. 自然科学. 1964, 4, p.44-49
Abstract: The Motai group is mainly composed of shistose green rocks, sericite quartz schists and quartzites, and it has been generally thought that this group had been metamorphosed before the Tobigamori was deposited in the Upper Devonian. On the other hand, however, the ultrabasic rocks frequently accompanied with the Motai, such as serpentines, amphibolites and shistose meta gabbros are also dynamically metamorphosed, and these is considered to be of same age as the biotite granite in a xenolith surrounded by serpentines exposed at the road cut along the pass of Shoboji-Yamanouchi. These basic rocks are also intruded by granite veins in the valley of Hanzashima, south of Shoboji. Such granitic rocks are generally intrusive rocks of a Cretaceous age in the Kitakami mountainland. Accordingly, the Motai is not only metamorphosed in the pre-Upper Devonian, but also in the Cretaceous.
URI: http://hdl.handle.net/10069/16432
ISSN: 02871319
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 4

Citable URI : http://hdl.handle.net/10069/16432

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