矿层的英文：
ledge
manto

参考例句：

"a deposit, as of ore, parallel to local stratification."
平行于局部地层的沉积物,如矿层。

Knowledge of the occurrence of chromite deposits is likewise incomplete
对于铬铁矿矿层产状的了解同样是不完整的。

The country is level and it is not easy to follow the magnetite seams continuously
地面是水平的，不容易连续地追踪此矿层。

Seams in the anorthosite series are only intermittently exposed
斜长岩组中的矿层仅断续出露。

The Main Chromitite Seam and the Merensky Reef do not outcrop well
主铬铁岩矿层及麦仑斯基矿层出露不好。

The chromite deposits in the Muskox Complex occur only in feldspathic peridotite
在穆斯科克斯杂岩体中，铬铁矿矿层仅产于长石质橄榄岩中。

ledge是什么意思：
n. 岩架；壁架；窗台；矿层；暗礁

Get to the ledge!
快跳到岩架上！

There are some objects of art on the ledge.
壁架上有一些工艺品。

The Hekou group is the major ledge.
河口组是主要的含矿层位。

A ledge between the parapet and the moat in a fortification.
搁板在堡垒中护城河与护墙之间的搁板

That black grouper on the ledge is hoping to catch one.
那个暗礁中的黑鲶鱼正要跳出抓住一条。

manto是什么意思：
席状交代矿床; 平卧状矿床; 矿层