Sentences with phrase «snail shell data»
Plus, in areas and time periods for which human records are sparse or inaccurate, snail shell data could fill in gaps and extend the record.
https://eos.org/ Not exact matches
An example was George Kukla's study of snail shells and pollen in layers of loess (wind - blown dust) in Czechoslovakia — another study that was designed to investigate gradual shifts, but in which a close look at the data revealed unexpectedly abrupt transitions.
The snail shells sample more finely spaced increments of time than do data from bands found in caves, trees, or mollusks, which have been used in prior paleoclimate research, he added.