1 Mountain Ranges Flashcards
-is a succession of many closely spaced mountains covering a particular portion of Earth.
-consists of valleys and river channels formed by water pushing down from melting glaciers.
MOUNTAIN RANGES
several mountain ranges =
MOUNTAIN BELTS
3 Features of a Mountain
Top or summit
Slope or side of the mountain
Very steep valley between young mountains (Gorge)
refers to the forces and events that lead to a large structural deformation of Earth’s lithosphere
product of movements of tectonic plates
Orogeny
3 STAGES OF MOUNTAIN BUILDING
STAGE 1: Accumulation of Sediments
STAGE 2: Orogenic Period of Rock Deformation and Crustal Uplift
STAGE 3: Period of Crustal Uplift caused by Isostatic Rebound and Block-Faulting
(stage of mountain building)
Mountain belts normally contain numerous layers of sedimentary and volcanic igneous rocks. These accumulations can be several kilometers in thickness.
STAGE 1: Accumulation of Sediments
(stage of mountain building)
the accumulated sediments become deformed by compressional forces from the collision of tectonic plates.
STAGE 2: Orogenic Period of Rock Deformation and Crustal Uplift
(stage of mountain building)
involves the vertical movement of continental crust that is floating in the plastic upper mantle.
STAGE 3: Period of Crustal Uplift caused by Isostatic Rebound and Block-Faulting
3 OF THE MOST FAMOUS RANGES IN THE WORLD
HIMALAYAS
ANDES
APPALACHIANS
Highest mountain range in the World
“House of Snow”/Snowy Range
Home of the world’s highest peak - elevation of about 1000 ft above sea level
HIMALAYAS
Longest mountain chain in the world
Divided into three sections
ANDES
three sections of Andes
- Central Andes
- Southern Andes
- North Andes
served as a barrier between the East Pacific Ocean and the rest of the South America
North Andes
primary mountain of the Northern American
partly in Canada but mostly in US
APPALACHIANS
deformed rocks formed as the continental plate is crumpled and pushed upwards.
Orogenesis
