relief of the earth- mountains and valleys
TRANSCRIPT
PREPARED BY:ELAINE MAE M. FLORENDO
IV-BSE1 FILIPINO
RELIEF OF THE EARTH
MOUNTAINS
The highest solid part of the Earth.They have sharp peak and narrow, deep valleys with a minimum of 2000 ft high.
Are many shapes and sizes and are arranged in many different combination.
MOUNTAINS
1. Geographically And Chronologically, According To Their Arrangements.
CLASSIFICATION OF MOUNTAINS
Range
Chain of mountains
Mountain system
Cordillera
RidgesPeak
A. Mountains Of Diastrophic OriginVolcanic cones Dome mountainsBlock mountainsFolded mountains
2.According To Their Geological Stratification
Volcanic cones
Dome mountains
Folded mountains
Block mountains
Complex mountain -(faulting, folding, volcanic eruption and intrusion, dome formation)
B. Mountains of Combined origin
›Mountains are actually regions of horizontal structure that have been eroded or dissected (cut up)
›Monadnocks- Mountains originally been a part of an igneous intrusion or strongly disturbed rock mass.
›Isolated summits
C. Mountains Of Erosional Origin
›Youth›Maturity›Old age
LIFE HISTORY OF MOUNTAIN
› Lofty elevation
› Rugged , with irregular skyline and good scenery
› Steep slopes
› With young streams, narrow valleys, and deep ravines
› Frequent landslide, avalanches, and earthquakes.
YOUTH
The characteristics of mature mountain are:
› Elevation not very high
› Rounded tops well covered with vegetation
› Slopes gentle
› Streams flowing slowly and the valleys wide
› Avalanche and earthquakes rare
Maturity
› They are characterized by:
› Low elevation, and what is left of them is called a peneplain or penoplane, meaning almost level like a plain
› Sometimes a peneplain- low rolling hills with an occational high hill called monadnock.
› Rivers moving slowly the land being almost level
Old age
Is an extended depression in the Earth surface that is usually bounded by hills or mountains and is normally occupied by a river or stream.
VALLEY
›V-shaped valley›U-shaped valley›Flat-floored valley
FORMS OF VALLEY
V-shaped valley
U-shaped valley
Flat-floored valley