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

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Presentation transcript:

CHAPTER 2 THE SEA FLOOR

OCEANIC & CONTINENTAL

OCEAN ZONES & HABITATS

WATER PLANET

FOUR MAJOR OCEAN BASINS

SHALLOWER SEAS

WORLD OCEANS AND SEAS

ONE WORLD OCEAN

FORMATION OF EARLY EARTH

EARTH’S STRUCTURE

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

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

EARLY EVIDENCE OF CONTINENTAL DRIFT

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

SONAR (1950s) MAP OF BASINS

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

CONTINENTAL DRIFT THEORY Theory accepted because CONVECTION was proposed as the MECHANISM of PLATE TECTONICS

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

Sea-Floor Spreading

GEOLOGIC HISTORY OF EARTH

OCEANIC SEDIMENTS - AGE

Climate and Sea Level

Geological Provinces of Ocean

Passive and Active Margins

DEEP SEA FEATURES

HYDROTHERMAL VENTS

ORGANISMS

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