Rock stock - Ganshu

Japanese: 岩株 - がんしゅ

① Boss : Similar to stock, an intrusive rock body with a horizontal cross section that is nearly circular [Hatch: 1888]. The French word bose means a hump or a mound.
② stock : A small bottomless intrusive body that is roughly cylindrical and relatively large, but smaller than a batholume. Most are irregular in shape, with branches branching off from the batholume and the top of the batholume protruding. The sides are steeply sloping and the body spreads downward [Katayama et al.: 1970]. Daily limited his study to small batholumes exposed at an area of less than 200 ^km2 [Watanabe, ed.: 1935]. The name comes from the German word Stockwerk, meaning floor or storey of a house, and was used in Saxon tin mines, where igneous rock disseminated with cassiterite was mined horizontally, resembling the storeys of a building.

Source: Asakura Publishing Dictionary of Petrology Information

Japanese:

① boss: stockと同様で，水平断面が円に近い形の貫入岩体［Hatch : 1888］．フランス語のboseはこぶ，円丘のこと．
② stock: 小規模な底なしの貫入岩体で，おおよそ円筒形で相対的には大きな貫入岩体であるが，底盤よりも小さいものをいう．底盤から枝分れしたもの，底盤の頂上部が頭を出しているものなど不規則な形が多い．側壁は急傾斜で岩体は下に向って広がっている［片山ほか : 1970］．デイリイは200km²以下の露出する小規模の底盤体に限った［渡辺編 : 1935］．名称はドイツ語の床または家屋の階層の意味のStockwerkからきており，サクソン地方の錫鉱山で使われた語で，錫石（cassiterite）に鉱染された火成岩体を水平に採掘し，建物の階層に似ていることに由来する．

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