Sentences with phrase «exposed by erosion»

The burrows, once refilled with sediments, fossilized, and then exposed by erosion, can end up looking like wiggly sticks.»

Some of the detected clays are in bedrock that has been exposed by erosion, others have been washed downstream from such sources by the Noachian rivers.

So far about 300 sites have been cataloged in ranch meadows along Range Creek and in adjacent canyons and peaks, where researchers also found human remains exposed by erosion.

Not exact matches

Marshalling convincing scientific data, they tell us that the environmental degradation caused by massive pollution of air water and land, threatens the very life of earth — fast depletion of non renewal resources, indeed of species themselves, the thinning of the ozone layer that exposes all living creatures to the danger of radiation, the build up of gases creating the greenhouse effect, increasing erosion by the sea — all these are brought out through their research.

The rocks had to be 50 million years old, as that is the age of the primates they study, and the land had to be sloped by at least 5 degrees, so erosion was likely to have exposed fossils.

According to the scientific team, the new findings show that 2.7 billion years ago relatively large landmasses emerged from the oceans that were exposed to weathering and erosion by the sun, wind and rain.

«In present day seawater, this can be explained by weathering and the erosion of the Earth's exposed surface,» explains Prof. Münker.

In a related paper by Thom, Goldsby and colleagues, published recently in the journal Geophysical Research Letters, the researchers examined patterns of roughness in faults that have become exposed at Earth's surface due to uplifted plates and erosion.

This break was probably was formed by erosion during the last low sea level stand (while sea level was much lower and the reef was exposed as dry land).

It is also possible for cold climates to increase chemical weathering in some ways, by lowering sea level to expose more land to erosion (though I'd guess this can also increase oxydation of C in sediments) and by supplying more sediments via glacial erosion for chemical weathering (of course, those sediments must make it to warmer conditions to make the process effective — downhill and downstream, or perhaps via pulsed ice ages -LRB-?)-RRB-.

From Australia to the Sahara & Sahel to the deserts of the Middle East & northwest India to the American West, human activity has destroyed fertile grasslands, and exposed the underlying soil to erosion by winds and rivers.

These areas of open water influence: (1) the land by allowing more ocean waves and more coastal erosion, (2) Greenland outlet glaciers by exposing the glacier fronts to warmer ocean waters, and (3) the atmosphere by providing a source of heat and moisture during autumn.