Glaciers Deserts and Wind

A thick ice mass that moves slowly over the land surface.

• glacial trough

• ice sheet

• ice age

• glacier

Ice masses that slowly advance down valleys that were originally occupied by streams.

• snowline

• glacial trough

• valley glacier

• ice age

Enormous ice masses that flow in all directions and cover everything but the highest land.

• glacier

• ice age

• ice sheet

• glacier trough

The material deposited directly by a glacier. It is deposited as the glacier melts and drops its load of rock debris.

• till

• stratified drift

• moraines

• alluvial fan

Sediment laid down by glacial meltwater.

• till

• stratified drift

• alluvial fan

• moraines

When glaciers melt, they can leave layers or ridges of till.

• alluvial fan

• playa lake

• stratified drift

• moraine

A cone of debris left when a desert stream flows out of a canyon, loses speed, or quickly dumps its sediment.

• moraine

• stratified drift

• alluvial fan

• playa lake

After a heavy rain/snowmelt in the mountains, streams may flow across alluvial fans to the center of the basin. They only last a few days or a few weeks.

• stratified drift

• till

• moraines

• playa lake

The lifting and removal of loose particles such as clay and silt.

• loess

• deflation

• desert pavement

• dunes

The creation of a stony surface layer when all the sand and silt are removed and only coarse particles remain.

• delfation

• desert pavement

• loess

• dunes