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