underlying rock

The underlying rock is present in a number of places on the hill.

Yet at last somewhat more of the underlying rock began to show.

This is dependent, among other things, on the underlying rock.

Must be something in the underlying rock or else it was really shallow.

It reached a similar depth and also bored five feet into the underlying rock.

Or was that a product of the underlying rock?

The underlying rocks of the area were formed more than 400 million years ago by intense heat and pressure.

Underlying rocks are generally younger from east to west.

Where the underlying rock has been exposed, the path could be slippery in wet conditions.

The main criterion for selection seems to be the porous nature of the underlying rock.

It must be strongly bound to the underlying rock.

The weight of the dam structure pushes it down firmly into the underlying rock.

Did I look up to admire the "giant cereal bowl" structure of the underlying rock?

The grooves were likely created by impacts that shattered the underlying rock.

The underlying rock is a mixture of sedimentary and volcanic material.

The underlying rock layer has been exposed on approximately 20% of the entire runway surface.

Then his left boot seemed to catch on the same projection of underlying rock that had almost stopped him when he was sinking.

The underlying rocks are dipping slightly to the east.

Most of the underlying rock is granite, though there is significant marble as well.

The tunnel valley is what remains of it in the underlying rock when the ice sheet has melted.

Whether shaking is widespread or not is all about the characteristics of the underlying rock.

At irregular intervals there were outcroppings of the underlying rock, which was red.

However, the sickness in the underlying rock and dirt mounted without cessation.

Were there some underlying rocks which had become encysted?

The ground was barren and rocky, with thin surface soil that exposed underlying rock.