core sample

Then the core sample was taken from inside the crater.

The last task at Station 2 was to take a core sample.

And he worked once on a glacier, taking core samples.

This summer, 3,000 core samples will be taken from the river's bottom.

He wondered again about the lack of water in the core samples.

But where does a ten thousand year old tree core sample come from?

A total of 556 box core samples were taken at sites up to 2.2 miles deep.

Ice core samples were also made, but with mixed success.

Core sample in general from ocean floor, rocks and ice.

There is also some uncertainty as to why a core sample could not be obtained.

Time saved not going there would be spent on pulling out the deep core sample.

The equipment they used for boring core samples was in operation.

The rover should be able to cache at least 38 core samples.

"Are you still having trouble with those core samples?"

Scott began drilling another hole, this time for a deep core sample.

There's been core sample drilling around the mine area since then, so mining may return.

Core samples taken from the roots indicate that the trees are about 3,500 - 4,000 years old.

Guatemala proved to be a core sample of a deep rot.

The aliens might have wanted to dig such a hole to take core samples.

In 1975, a last series of metallurgical tests were done on core samples.

I think the core samples have more to tell us than colored rocks."

My assistants are going to make further measurements and take core samples from the limbs.

He said core samples would have to be examined to determine the strength of the concrete.

However it is also possible to take core samples from the wall of an existing borehole.

The trees rings are commonly measured by taking a series of core samples.