palaeomagnetically
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David Evans (Yale professor) — David Evans Born 7 April 1970 (1970 04 07) (age 41)[citation needed] Milwaukee, Wisconsin, United States … Wikipedia
dating of cave sediments — Determination of the age of development of caves is normally impossible. Only the sediments they contain can be dated, and these must necessarily be younger than the containing passage. Geomorphological correlations may allow more accurate… … Lexicon of Cave and Karst Terminology