英语语法分析

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。

As podiform chromitite has stable physical and chemical properties, it has recorded the magmatic process of the mantle under the ocean spreading centre and the lateral movement of oceanic lithosphere.

豆荚状铬铁矿以其独特而稳定的物理化学特性，记录了大洋地幔深部岩浆活动(特别是扩张中心原始岩浆活动)以及大洋岩石圈运动过程。