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298210
Andes - case study of fold mountains
Descripción
Mapa Mental sobre Andes - case study of fold mountains, creado por jeacur el 23/10/2013.
Mapa Mental por
jeacur
, actualizado hace más de 1 año
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Creado por
jeacur
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Resumen del Recurso
Andes - case study of fold mountains
Where?
longest range of fold mountains in world
7,000Km
Length of S. America
average height of 4,000m
Cause?
Nazca plate and SAmerican plate
destructive plate margin
Opportunities for people
Farming
potatoes - main source of food
also soybeans, rice and cotton
steep slopes are overcome by the use of terraces
terraces also retain what little rain is received
Llamas also reared
carry materials for irrigation and buildings into otherwise inaccessible areas
can carry 25% of its bodyweight
female llamas also used for meat and milk, their wool for clothes and rugs
Mining
ranks in ton ten countries for tin, nickel, silver and gold
more than half Peru's exports are from mining
Yanacocha gold mine is largest in the world
however the gold bearing rock is sprayed with cyanide and gold extracted from resulting solution can lead to water contamination
Cajamarca grown from 30,000 when mine because to 240,000
growth means jobs but also lack of services and increased crime rate
HEP
steep slopes and narrow valleys are more easily dammed
relief encourages rapid flow of water
melting snow in spring increases water supply
variation throughout the year is a disadvantage
Tourism
Many natural attractions
peaks, volcanoes, glaciers and lakes
Inca early settlements and Inca trail
trail consists of three routes that join at Machu Picchu
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