地質学雑誌
Online ISSN : 1349-9963
Print ISSN : 0016-7630
ISSN-L : 0016-7630
報告
愛知県設楽地域東部の貫入岩体の全岩化学組成,輝度および変質度
図子田 和典岡村 太路二村 康平束田 和弘竹内 誠
著者情報
ジャーナル フリー
電子付録

2020 年 126 巻 11 号 p. 645-654

詳細
抄録

Miocene dikes and sills are widely exposed in the eastern Shitara area, Aichi Prefecture, central Japan. Whole-rock chemical composition, grain size, lightness, and the alteration ratio of the intrusive rocks from three outcrops in the Shitara area are described in this paper. The central part of the intrusive rock bodies, commonly dark gray, gradually changes into grayish white toward its marginal part. The lightness of the polished surface of the rocks was measured using the hue, saturation, lightness (HSL) tool in the Inkscape graphics editor. At the white part, plagioclase crystals are fine-grained and severely replaced by secondary minerals such as calcite, whereas plagioclase, at the dark gray part, is much larger than that in the white part and less altered. Turning to chemical composition, common feature cannot be found among three outcrops.

著者関連情報
© 2020 日本地質学会
前の記事 次の記事
feedback
Top