shales

the shales are overthrust by Carboniferous rocks.

页岩层被石炭层逆掩。

Double Rollers Crusher is used to crush clunch and partial shales for brick enterprises. It has two rollers to circumrotate in reverse. The clunch between rollers are crushed by extrusion.

双辊破碎机普遍用于粘土和部分混合原料生产砖瓦的破碎设，有两个工作辊子作相反向旋转，辊子间的粘土压而破碎。

The lithologies are dominated by alternating sandstones, shales and limestone, and the sedimentary environment based on shoreland tidal flat with swamp developed in the lower.

岩性为砂、页岩-灰岩互层，沉积环境以滨岸潮坪为主，下部沼泽发育。