News From the Field
Snail Fossils Suggest Semiarid Eastern Canary Islands Were Wetter 50,000 Years Ago
October 27, 2009
Isotopic measurements, performed on fossilized land snail shells found in ancient soils on the subtropical eastern Canary Islands, resulted in oxygen isotope ratios that suggest the Spanish archipelago off the northwest coast of Africa has become progressively drier over the past 50,000 years. These findings are from research by Yurena Yanes and Crayton Yapp of Southern Methodist University in Dallas, Texas.
Southern Methodist University
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