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单词 malmstone
释义

malmstone

英汉-汉英词典
n. 灰砂岩
词组 | 习惯用语
您要查找的是不是:
  • brimstone n. 硫黄
  • limestone n. 石灰岩
  • milestone n. 里程碑
  • millstone n. 磨,磨石,粉碎器,重担
  • stonemason n. 石工;石匠
malmstone 砂岩; [岩] 灰砂岩;

网络短语:
malmstone copper ore 砂岩型铜矿
malmstone non-fired brick 砂岩免烧砖
英语百科

Greensand

A roadcut within the Llano Uplift on Texas Highway 1431 about 18 km northwest Marble Falls, Texas that exposes greensand of the Lion Mountain Sandstone (Cambrian) in the lower unit. Notice the normal fault cutting through the formation.
A sample of Cretaceous greensand from near Swanage, Dorset.

Greensand or Green sand is either a sand or sandstone, which has a greenish color. This term is specifically applied to shallow marine sediment, that contains noticeable quantities of rounded greenish grains. These grains are called glauconies and consist of a mixture of mixed-layer clay minerals, such as smectite and glauconite mica. Greensand is also loosely applied to any glauconitic sediment.

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更新时间:2025/6/18 23:32:43