elective geography secondary 3 express (new)- plate tectonics 5
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Elective Geog (New)Secondary 3 EWeek 6: Living with Tectonic Hazards
2+Lesson Outcomes
By the end of the lesson, we will be able to describe the characteristics of fold mountains describe the characteristics of landforms and
phenomena associated with converging continental and oceanic plate boundaries
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http://www.youtube.com/watch?v=7gXixxYKM80
4+Fold Mountains
Formed when layers of rocks are compressed and folded
Young – less than 100 million years old
Old- 270- 400 million years
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7+Fold Mountains
Formed when layers of rocks are compressed and folded
Found at Convergent plate boundaries
Common in sedimentary rocks
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9+Fold Mountains
Folding When compressional force creates immense pressure
which causes the layers of rocks to buckle and fold
Anticline (Upfold)
Syncline (Downfold)
Fracture Formed when increasing compressional force on one
limb of a fold causes rocks to buckle
Limb moves forward to ride over the other limb
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+Distribution of Fold Mountains
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Converging:Continental- Continental
Fold Mountain Range
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Converging:Oceanic- Continental
Denser Oceanic Platesubducts beneath the lessdense Continental Plate
Oceanic TrenchAt Subduction Zone
Fold MountainsOn Continental Plate
Magma rises through crusts giving rise to Volcanoes
Continental Plate buckles and folds
Solid mantle materialmelts and forms magma
+Converging:Oceanic- Continental
SundaOceanicTrench
Fold Mountains/Volcanoes
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+TRANSFORM PLATE BOUNDARY
- Plates slide past each other
- A fault line is created
* Transform plate boundaries are also known as ‘conservative’ plate boundaries
+ LET’S WRECK IT!
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+TRANSFORM PLATE BOUNDARY
- The movement results in the formation of a fault
- In the process, tremendous stress builds up and is eventually released, often in the forms of tremor and earthquakes
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TURKEY
ISTANBUL
E.g. North Anatolian Fault, Turkey
How would the plate movement affect the two cities shown in time to come?
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E.g. San Andreas Fault, USA
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+ANDES
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