“OVERBURDEN” на русском языке

Underneath the muskeg is a layer of sand, rock and overburden , a clay-like material.

Overpressured prodelta shales may act as a decoupling zone between the structural basement and deltaic overburden .

The workings were confined to several, steep-sided gorges from which the miners extracted fibre with some difficulty, mostly either by blast-removing overburden to expose benches or by underground mining.

It is proposed that evaporite dissolution led to the collapse of the weakly lithified overburden , and this deformed with a series of concentric extensional faults.

Calculations suggest that 1,000 tons of overburden was removed to create a single shaft, which yielded approximately 8 tons of nodular flint.