A higher ¹⁸O/¹⁶O ratio in ocean sediment cores indicates a __________climate,and a higher ¹⁸O/¹⁶O ratio in ice cores indicates a __________climate. A)cooler; cooler B)cooler; warmer C)warmer; cooler D)warmer; warmer

Question

Quizplus · Accepted Answer

A higher 18O/16O ratio in ocean sediment cores indicates a cooler climate because during colder periods, more 16O is trapped in ice sheets and glaciers, leaving more 18O in the ocean. Similarly, a higher 18O/16O ratio in ice cores indicates a warmer climate because during warmer periods, more 16O is evaporated and trapped in precipitation that falls as snow, leaving more 18O in the remaining ice.

A Higher 18O/16O Ratio in Ocean Sediment Cores Indicates a __________Climate,and

A Higher ¹⁸O/¹⁶O Ratio in Ocean Sediment Cores Indicates a __________Climate,and