Dynamic Earth: Chapter 3 and 4 Flashcards Preview

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Flashcards in Dynamic Earth: Chapter 3 and 4 Deck (20):
1

over 70% of Earth's surface is covered by...

Oceans

2

continental margin that has a continental shelf, slope, and rise descending to the abyssal plain

Passive Continental Margin

3

continental margin that has shelves and slopes but the slope extends down into a deep oceanic trench

Active Continental Margins

4

gently seaward sloping shallow submarine platforms at the edges of continents

Continental Shelves

5

steep slopes that extend down from the edge of the continental shelf to the abyssal plain

Continental Slopes

6

v-shaped valleys that run across continental shelves and down continental slopes

Submarine Canyons

7

gently seaward-sloping wedges of sediments extending from base of continental slope to deep sea floor

Continental Rises

8

extremely flat regions beyond the base of the continental rise

Abyssal Plains

9

a narrow, deep trough parallel to the edge of a continent or an island arc, the deepest parts of the oceans

Oceanic Trench

10

giant undersea mountain range extending around the world like seams on a baseball

Mid-Oceanic Ridge

11

1-2km deep valley that runs down the crest of the Mid-Oceanic ridge

Rift Valley

12

conical undersea mountains that rise (equal to or greater than) 1000m above the sea floor

Sea Mounts

13

flat topped seamounts, apparently cut by wave action and commonly capped with coral reefs

Guyots

14

wave resistant ridges of coral and other calcareous organisms

Reefs

15

refers to a body of techniques for investifgating phenomena aquiring new knowledge, or correcting and integrating previous knowledge.

Scientific Method

16

the Earth's surface is divided into a few large, thick plates that move slowly and change in size over time

Plate Tectonics

17

continents move freely over the surface of the Earth, changing their positions relative to one another

Continental Drift

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seafloor forms at the crest of mid oceanic ridges, and moves horizontally away from the ridge, moving towards and oceanic trench; proposed by Harry Hess in the 1960s

Seafloor Spreading

19

within an orogenic belt and bounded by strike-slip faults

Suspect Terrane

20

on oceanic lithosphere that "sails" the seas until one day encounters/collides with continental crust

Displaced Terrrane