Varves are the best indicators of ancient climate change.
Varves has the similarity with the regular, annual rings of the trees. by Dr. Nitish Priyadarshi The study of climates during the geological past, is one of the most topical areas of research in the geosciences at present. The threat of future climate change caused by higher levels of green house gases, which would drastically alter many aspects of our environment, has prompted much research to try to understand how our own complex climate system works. Only by understanding how climate has evolved over million of years can we identify important climate cycles with a frequency in excess of the short climate records we possess. These climate cycles have the potential to have a profound effect on our environment. Understanding our climate history in the geological past is also important for climatologists trying to construct accurate numerical computer models of our present climate system to use for predicting future climate change. It is obviously not possible to check the accuracy of m...