Land slides

2. Gravity Erosion
Gravity erosion defined as the transfer of rock and soil down
slope by indirect or direct action of gravity with or without a
flowing medium (such as water or ice).
 Some of the best examples are:
 Slump
 Creep
 Rockfalls
 Rock slides
 Mud flows
 Ava;anches

4. Gravity Erosion

5. Slump
Occurs when a mass of material slips
down along a curved surface's leaves a
curved scar where the slumped material
originated.
The slope becomes so steep that the
base material cannot support the material
above it.
The base material is weaker than the
material above it (ex. clay)Water moves
to the base of a slipping mass of
sediment.

6. Causes structures and
trees to “lean” uphill.

7.  Humans are constantly influencing the nature of our landscapes.
HOUSES, ROADS, BUILDINGS, DEVELOPMENTS, CANALS, etc.,
all change the shape and appearance of the land.

8. Rock fall Pattan AJK

9. Landslides/ Rockslide
 A landslide happens when a large amount of
soil and rock suddenly falls down a slope
because of gravity.

10.  Rockslide
 Occur when layers of rock
slip downslope suddenly.
 Commonly occur on steep
slopes in mountainous
areas or areas with steep
cliffs.
 Happen most often after
heavy rains or
earthquakes.

13. December 2017 Barshore area
of Pishin district of Balochistan

14. Mud Flow
 Occur when heavy rains mix with
sediment causing the sediment to
become thick and pasty and then
move downhill under the force of
gravity.
 The materials of the mudflow are
deposited at the base of the
slope…often in a fan shape.
 Usually occur in areas that have
thick layers of loose sediments.
 Often happen after vegetation
has been removed by fire.

15. Kazakhstan July 2015

17. District of Astore, about 155 kilometres from Skardu.March
2014 four soldiers were killed when 26 troops came under
a huge flow of snow