The Continuing Ice Age

Audio File   Throughout the glacial period, other activities were in progress, but the action of the ice overshadows all other phenomena in the northern latitudes. No other terrestrial activity leaves such characteristic evidence on the topography. The distinctive boulders and surface cleavages, such as potholes, lakes, displaced stone, and rock flour, are to be … Continue reading The Continuing Ice Age

The Climatic Transition Stage

Audio File     THE SEED-PLANT PERIOD        THE AGE OF BIOLOGIC TRIBULATION   This period marks the end of pivotal evolutionary development in marine life and the opening of the transition period leading to the subsequent ages of land animals. This age was one of great life impoverishment.  Thousands of marine species perished, … Continue reading The Climatic Transition Stage