ice age

n.

冰河时代（在新生代的第四世），冰期，冰川期；

GLOBAL GLACIAL ISOSTASY AND THE SURFACE OF THE ICE-AGE EARTH: The ICE-5G (VM2) Model and GRACE
Global signatures and dynamical origins of the Little Ice Age and Medieval Climate Anomaly.
Ice Age Paleotopography
The 100,000-Year Ice-Age Cycle Identified and Found to Lag Temperature, Carbon Dioxide, and Orbital Eccentricity
After the Ice Age. The Return of Life to Glaciated North America. by E. C. Pielou
A Repopulation. (Book Reviews: After the Ice Age. The Return of Life to Glaciated North America.)
After the Ice Age: The Return of Life to Glaciated North America (Book)
The surface of the ice-age Earth.
The surface of Ice-Age Earth
The Surface of the Ice-Age Earth