Ice cores from continental glaciers provide geologists opportunities to study past atmospheric conditions such as air temperature and greenhouse gas content.The reliable record available from coring ice in the Antarctic and Greenland ice sheets gives information back to approximately ____________.
A)65 million years ago
B)5 million years ago
C)700,000 years ago
D)150,000 years ago

Question

Quizplus · Accepted Answer

Ice cores from continental glaciers provide a reliable record of past atmospheric conditions as they contain trapped air bubbles, which can be analyzed for greenhouse gas content. The ice cores from Antarctica and Greenland can provide information back to approximately 700,000 years ago.

Ice Cores from Continental Glaciers Provide Geologists Opportunities to Study