Periglacial Landforms

Question 1

Ice Wedges (Freeze thaw)

Answer 1

-Created by freeze thaw weathering

-Ground contracts, cracks, and is filled by meltwater, which freezes/ melts and expands creating ice wedge

Question 2

Patterned Ground (Freeze thaw)

Answer 2

-Extensive ice wedges create patterns shaped like polygons

Question 3

Blockfields (Freeze thaw/Frost shatter)

Answer 3

-Repeated freeze thaw in rocks creates areas of angular rock fragments in situ

Question 4

Pingos

Answer 4

-Frost heave causes flat, wide, dome shaped hills to appear

-Closed and open systems

Question 5

Solifluction lobes

Answer 5

-Active layer saturated and slumps downhill creating lobes

Question 6

Loess

Answer 6

Wind-blown, silt-sized sediment deposits that formed during and after glacial periods, often in areas bordering large glaciers