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CHAPTER 2 THE SEA FLOOR. OCEANIC & CONTINENTAL OCEAN ZONES & HABITATS.

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Presentation on theme: "CHAPTER 2 THE SEA FLOOR. OCEANIC & CONTINENTAL OCEAN ZONES & HABITATS."— Presentation transcript:

1 CHAPTER 2 THE SEA FLOOR

2 OCEANIC & CONTINENTAL

3 OCEAN ZONES & HABITATS

4 WATER PLANET

5

6 FOUR MAJOR OCEAN BASINS

7 SHALLOWER SEAS

8 WORLD OCEANS AND SEAS

9 ONE WORLD OCEAN

10 FORMATION OF EARLY EARTH

11 EARTH’S STRUCTURE

12 CRUST TYPES Old thinking – these slabs of crust were static, unmoving and unchanging

13 CRUST IN MOTION New thinking – these slabs of crust were in motion

14 EARLY EVIDENCE OF CONTINENTAL DRIFT

15 CONTINENTAL DRIFT THEORY Theory originally failed because no one could propose HOW IT WORKED

16 SONAR (1950s) MAP OF BASINS

17 MID-OCEAN RIDGE SYSTEM Under water volcanoes and new crust forming Largest geologic feature on the planet

18 CONTINENTAL DRIFT THEORY Theory accepted because CONVECTION was proposed as the MECHANISM of PLATE TECTONICS http://www.absorblearning.com/media/attachment.action?quick=12p&att=2775

19 ORIGIN OF OCEAN BASINS Animations/plate_tectonics.html Use LITE disk

20 Sea-Floor Spreading http://www.seed.slb.com/flash/science/features/earth/livingplanet/plate_boundaries/en/index.html?width=570&height=475&popup=true http://www.absorblearning.com/media/item.action?quick=12n

21 GEOLOGIC HISTORY OF EARTH

22 OCEANIC SEDIMENTS - AGE

23 Climate and Sea Level

24 Geological Provinces of Ocean

25 Passive and Active Margins

26 DEEP SEA FEATURES

27 HYDROTHERMAL VENTS

28 ORGANISMS


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