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広島大学大学院教育学研究科紀要. 第二部, 文化教育開発関連領域 65 号
2016-12-22 発行
火成岩の見かけの多様性 : 花崗岩の分布と岩相の特徴について
Apparent Diversity of Igneous Rocks : Distribution of the granitic rocks and characteristic of lithologies
Abstract
In junior high school, the students learn to observe igneous rocks, including plutonic and volcanic rocks. Igneous rocks exemplified in the textbook are only those of typical specimens. However, rocks, either igneous, sedimentary or metamorphic rocks, observed in the field are sometimes weathered and show various lithologies. In order to make it possible to correctly identify igneous rocks, it is necessary to correctly recognize both their textures and structures and their rock-forming minerals, rather than to learn the rock name and its photo solely on a one-to-one basis. Taking granites as an example, introduced are: (a) the distribution of the main granite bodies observed in Western Japan; (b) their lithologies and (c) their formation ages.
About This Article
内容記述
本研究はJSPS 科研費JP22300272の助成を受けたものである。
著者キーワード
Granite
Igneous rock
Identify
Rock-forming minerals
花崗岩
火成岩
教材開発
岩石
識別
Other Article