varves उदाहरण वाक्य

Quaternary varves are used in stratigraphy and palaeoclimatology to reconstruct climate changes during the last few hundred thousand years.
Varves form in a variety of depositional environments from seasonal variation in clastic, biological, and chemical sedimentary processes.
These sediments normally consist of fine-grained rhythmites that are laid down in layers known as varves or varvites.
These varves are being used to study the climate of this area of New York over the last several thousand years.
The improvements to these curves are based on new data gathered from tree rings, varves, coral, and other studies.

Of the many rhythmites in the geological record, varves are one of the most important and illuminating in studies of past climate change.
Varves form only in fresh or brackish water, because the high levels of salt in normal sea water coagulate the clay into coarse grains.
In the case of Lower Mystic Lake, the varves have been used by Mark Besonen and his collaborators to study the historical incidence of hurricanes.
After returning to Swedsen in 1930 he joined an expedition to Australia and New Zealand where he applied knowledge of varves to study the Carboniferous Karoo Ice Age.
Marie to Sudbury, northeast of Lake Huron, with giant layers of now-lithified till beds, dropstones, varves, outwash, and scoured basement rocks.