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Usage examples of sediment.

Jurassic marine strata are often correlated worldwide with great precision and confidence by recognition of a regular succession of ammonoid fauna that occurs in the same sequence wherever marine sediments of suitable age are preserved.

Those who support transfer from Polynesia point to the fact that they can find no evidence for the sweet potato on Rapa Nui before 1600 AD, but surely this is not entirely fair, given that ipomoea batatas does not preserve well in sediment.

It took physical contact, breathing chalky sediments or tracing with your fingertips the outline of some paleozoic brachiopod, to truly feel the eons imbedded in a place like this.

All I know about the matter is, that one day Marheyo in my presence poured out the last drop from his huge calabash, and I observed at the bottom of the vessel a small quantity of gravelly sediment very much resembling our common sand.

The ceratopsids are known from the Upper Cretaceous sediments mainly from North America.

We were in a small bay then, its shores a dark sweep of sediment, grey slopes streaked with black and the metallic glints of cuprous green.

The oldest eukaryotes yet known, called Grypania, were discovered in iron sediments in Michigan in 1992.

In this latter case, as long as the rate of subsidence and supply of sediment nearly balance each other, the sea will remain shallow and favourable for life, and thus a fossiliferous formation thick enough, when upraised, to resist any amount of degradation, may be formed.

I thought the bones were widely spaced, even in good fossiliferous sediments.

Then again, if they were very close to the source, the leaking isotopes could still be trapped in the bottom water, next to the sediment and out of reach of their surface instruments in any regard.

The layers were ribboned with ancient striations, where eons of fire and sediment had birthed their early formation.

If the elite among the mercenaries had been skimmed off to form the Stepsons, then its opposite was stationed here in Tyse, like the sediment at the bottom of a cheap wine jug.

Wherever sediment did not accumulate on the bed of the sea, or where it did not accumulate at a sufficient rate to protect organic bodies from decay, no remains could be preserved.

When the stream rises, the sediment settles in this tangle, and soon extends the alluvial plain from the neighbouring bank, or in rarer cases the river comes to flow on either side of an island of its own construction.

A shaft of sun from between the willow branches pierced a pool below her and she could see a long, speckled trout resting in its warmth and puffs of sediment as a powter moved along the sludge of the river bottom.