Relief of the Earth- Mountains and Valleys

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