chapter 2 the sea floor. oceanic & continental ocean zones & habitats

CHAPTER 2

THE SEA FLOOR

OCEANIC & CONTINENTAL

OCEAN ZONES & HABITATS

WATER PLANET

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 formingLargest geologic feature on the planet

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

ORIGIN OF OCEAN BASINS

Animations/plate_tectonics.html

Use LITE disk

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

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