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Science 10H Earth Science: Geological History of BC.

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Presentation on theme: "Science 10H Earth Science: Geological History of BC."— Presentation transcript:

1 Science 10H Earth Science: Geological History of BC

2 Objectives: By the end of the lesson you should be able to: Describe how the west coast and province of BC has formed

3 Geological history of British Columbia A passive ocean-continent margin existed from around 700 m.y to around 200 m.y.

4 Geological history of British Columbia Subduction of Farallon plate beneath North America. Approach of Intermontane Terrane

5 Geological history of British Columbia Joining of the Intermontane/Super- Terrane; Consequent thrusting/folding of existing NA plate into the Rocky Mountains; Approach of Insular Terrane; Subduction and related volcanism

6 Rocky Mountains

7 Burgess Shale

8 Rocky Mountains Takkakaw Falls

9 Geological history of British Columbia Formation of the Coast Range Joining of the Insular Terrane. Ongoing subduction of the Juan de Fuca Plate Further uplift of the Rocky Mountains.

10

11 Present-day plate distribution along west coast of Canada

12 Volcanoes of BC

13 http://svs.gsfc.nasa.gov/vis/a000000/a00130 0/a001322/a001322.mp4


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