China - Overview and geological history

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  • Created by: nicola
  • Created on: 05-04-11 12:21

Loess - alter climates due to wind blown aerosol, provides an extenisve palaeorecord 

Can also use marine and speleothem records from off the coast

Monsoon driven by uplift of the Tibetan Plateau - draws in moisture, rains sustain over 2/3 of world population

Problems in the area of extreme events such as flooding, drought and dust storms - large impacts on human health

Large population, many of these may not be included in national figures as they live in remote areas - these people are uneducated with low job prospects (usually farmers)

Uplift of Tibet argued to be the cause of the Quaternary iceage causing N Hemisphere ice sheet expansion

Tectonically active area with high pops therefore more damage caused - effects are global

Formation of China

Precambrian - until 542 Ma

  • Formation of main cratons - peices of very old continent that were present in this era
  • Northern blocks collided to form N China
  • Time that most of Earth was under glaciation

Permo-Carboniferous (280 Ma)

  • N China collides with Siberia and Russia joining them together
  • South China still separate at this point

Early Triassic (237 Ma)

  • South China collides with N China
  • Formation of the super-continent - Pangea
  • Slithers of continent formed (microcontinents) from volcanism south of Pangea
  • Collide with China - continuous collisions in the late Mesozoic

Late Cretaceous (94 Ma)

  • Continent breaks up
  • India dissociates from Africa and drifts northwards (extremely fast rate…


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