The Restless Earth & Rocks
- Created by: zahra
- Created on: 08-05-10 12:22
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The Earths Crust
Earths Crust is broken into huge slabs of rock called PLATES
There are TWO type's of plate
- OCEANIC PLATES - made of basalt, Betwenn 5km - 10km Thick
- CONTINENTAL PLATES - made of granite, between 25km - 90km Thick
Both float on very HOT MANTLE
Plate Margins - where two or more plates Meet
Fold Mountains - formed on DESTRUCTIVE PLATE MARGINS (where two plates push toghere) These rocks in the crust are COMPRESSED and fold ANTICLINES (upfolds) & SYNCLINES (downfolds) to new mountain ranges
GEOSYNCLINE - Large downfold in earths crust which…
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