Physiographic Regions of BC

Question 1

What are the typical physical/landscape characteristics of intrusive igneous (Plutonic) rocks?

Answer 1

Relatively resistant to weathering, steep slopes, blocky terrain.

Question 2

What are the typical physical/landscape characteristics of extrusive igneous rocks?

Answer 2

Weather relatively rapidly, Can be strong or weak, Sometimes Slope instability, gradual slopes/lava sheets

Question 3

What are the typical physical/landscape characteristics of Sedimentary Rocks?

Answer 3

Can be erosion prone (Mudstone, shale, limestone), sandstone/conglomerates are relatively resistant.

Question 4

What are the typical physical/landscape characteristics of metamorphic rocks?

Answer 4

Can be resistant (gniess) while some schists are erodible. Marble extremely resistant.

Question 5

What are the primary rock types of the Kitimat Ranges?

Answer 5

Intrusive Igneous, Faulted and Folded lava

Question 6

What are the primary rock types of the Pacific Ranges?

Answer 6

Intrusive Igneous, Faulted and Folded lava

Question 7

What are the primary rock types of the Central Plateau?

Answer 7

Flat lying lava, Faulted and folded lava

Question 8

What are the primary rock types of the Vancouver Island Ranges?

Answer 8

Faulted and Folded lava, Intrusive Igneous

Question 9

What are the primary rock types of the Queen Charlotte Ranges?

Answer 9

Flat lying lava, Faulted and Folded

Question 10

What are the primary rock types of the Skeena Ranges?

Answer 10

Faulted and folded Sedimentary, Intrusive Igneous

Question 11

What are the primary rock types of the Alberta Plateau?

Answer 11

Flat lying sedimentary

Question 12

What are the primary rock types of the Muskwa Ranges?

Answer 12

Faulted and folded sedimentary, limestone