Introduction - Semi-quantitative Approaches for Landslide Assessment and Prediction - page 7

Table 1.2 (continued)
Landslide
No.

Location Specic location of

the slides

Elevation
and slope
angle

Lithology Area of the

slide

Triggering factors Type of the

slide

9 Upper Pag-

lajhora road
subsidence

15 km donwn from
Kurseong

67 °

1,220 m

Foliated gneiss
and mica schist

85 m of road Steep slope and

saturation of
unconsolidated
materials

Subsidence
and sinking

10 14 miles

bustee road
abandonment

37.5 km North from
Siliguri

>65 °

1,130 m

Foliated gneiss
and mica schist

68 m length
of road

Existence of
non-cohesive materials
on steep slope

Subsidence
and sinking

2,250 m 2 59 °

1,118 m

11 14 miles

bustee Slide

37.25 km north
from Siliguri

Calc-granulite,
Foliated gneiss
and mica schist

Steep slope,
unconsolidated
materials, formation
of narrow nala

Earth slide

312 m 2 12 Shiviter T.E.

(along the
road)

2.0 km north from
Mahanadi

64 ° and
950 m

Highly foliated
and decom-
posed granite

Steep slope,
supersaturation of
unconsolidated
materials

Weathered
debris
failure

13 Shiviter tea

garden slide

3.0 km north from
Mahanadi

>65 and

1,050 m

° Highly foliated

and decom-
posed granite

3 acres of tea
area

Steep slope, supersatu-
ration of unconsolidated
materials

Debris fall
and earth
fall

14 Jogamaya

T.E.

Downslope between
Tindharia and
Gayabari

50 ° - 65 ° Phyllite,

Quartzite-schist

Large tea
area affected
by slide

Soil-slip
and debris
slide

900 1,050 m

-

66.6 m 2 15 Sepoydhura

T.E.-I

2.00 km north from
Chunabhati Rail
Station (Hill Cart
Road)

>65 °

295 m

Soft yellowish
mudstone,
shale and
conglomerate

Steepening of slope by
road cutting and less
cohesive materials

Debris slide
and earth
slide

(continued)