Plate Tectonics: A whole new way of looking at your planet
by Keyword

The Book  
Table of Contents
Introduction
In the Beginning
The Tectonic Plates
Mount St. Helen
How Plates Move
Plate Boundaries
A Changing Earth
Pangaea - All Lands
Mid-Ocean Ridges
An Ocean is Born
The Birth of an Island
Mountain Ranges
Subduction Zones
Island Arcs
The Ring of Fire
Faults
Earthquakes
Hot Spots
Mantle Plumes
Origin of Life Theories
Global Climate
Other Worlds
Welcome to Your World

Pangaea : All Lands

All of the evidence suggests that 225 million years ago all of the land masses of earth were locked together as a great supercontinent called Pangaea, a Greek word meaning ‘all lands’. Panthalessa, Greek for ‘all seas’, was the name given to the resulting world ocean. Eventually, tectonic forces caused the break-up of Pangaea, leading to the current, albeit temporary, arrangement of oceans, continents, and other land masses.

Pangae: All Lands
Scientists believe that the Earth’s crust has been undergoing these transformations for most of it’s 4.6 billion year history. Two hundred million years from now a new Pangaea will be formed when all lands again converge. Then, inevitably, another break-up will ensue as our restless planet continues to reform and reshape itself.
   
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