Beryllium-10 dating of moraines around Lake Ohau

Description

Lake Ohau is one of several very large lakes in the Southern Alps that fill valleys once carved out by huge glaciers during the Ice Age. As the ice retreated, it left spectacular and classic landforms in its wake, including concentric lines of moraines, erratic boulders, 'U' shaped valleys and extensive outwash plains. The rapid tectonic uplift of the Southern Alps, and extreme climatic conditions, have created the landscape we see today.