Or rather, at whatever you call that geological stratum where the sand stops and the rock begins.

A bone bed is any geological stratum or deposit that contains bones of whatever kind.

A geological stratum that allows water to penetrate through pores and openings.

Rivers rich in them often cut through geological strata and sediments that are anywhere from one billion to more than two billion years old.

In archaeology, a sterile deposit is a geological stratum that lacks any materials of archaeological significance.

At the proper geological stratum.

If the geological stratum above the aquifer is an inadequate natural barrier there may be chronic or seasonal episodes of contamination at the collection point.

The song was of incredible complexity and depth-the kind of melody you might expect a mountain, or perhaps a geological stratum, to sing.

This included his observation of fossil shells in a geological stratum of a mountain hundreds of miles from the ocean.

This organisation runs an International Commission on Stratigraphy, which decides how we should name geological strata and stages.

It is found on many geological strata including slate, limestone, on hillsides, quarries and sometimes on mountain slopes.

A polystrate fossil is a fossil of a single organism (such as a tree trunk) that extends through more than one geological stratum.

What would be evidence against evolution, and very strong evidence at that, would be the discovery of even a single fossil in the wrong geological stratum.

Such evidence has been difficult to find, Dr. Martin said, partly because one must look for it in an extremely thin geological stratum representing only a decade.

The conduit between the mountains and the spring is the geological stratum found in parts of the northwest United States called the Madison Limestone.

The upper part of the geological stratum consists of fluvioglacial deposits, predominantly presented by a 10-15 m layer of different grainy sands.

This division is further broken down into assemblage zones, intervals of geological strata that are defined based on the distributions of previously found tetrapod taxa.

Biostratigraphic unit "or biozones are intervals of geological strata that are defined on the basis of their characteristic fossil taxa."

The maximum burial depth approximately ranges from 75 to 80 centimeters, only the oblong funeral urns were seated on the geological stratum known as Talpetate.

It has part of a larger a geological stratum across parts of the South East, the "Netley Heath Beds".

Douglas rode a miner's cage 1,500 feet down into the earth to turn a bolt signifying a mining company's victory in taming a nightmarish, water-laden geological stratum.

The discovery of all of the fossils at AL 333 aligned close together in one geological stratum is an obvious sign that they died at about the same time.

The two are the landward ends of the Strait of Dover land bridge and their chalk geological stratum dictates the route of the Channel Tunnel.

The Pristerognathus Assemblage Zone is a geological stratum and a faunal zone of the Beaufort Group, of the South African Karoo.

The Lower Estuarine Series, also called in more modern publications, the Grantham Formation, is a relatively complex but generally thin set of geological strata which are usually considered as a group.