Over 220 million years ago the earth was formed by a unique structure called
"Pangea" , Pangea was the supercontinent that existed at the end of the Paleozoic
and Mesozoic that grouped most of the land surface of the planet. It was formed
by the movement of plates tectonic, some 300 million years ago joined all previous
continents into one, then, about 200 million years ago, began to fracture and
disintegrate up, it has been fragmented to form the continents known in the XXI
WHAT ARE PLATES TECTONICS?
structure Igneous rock
the plates tectonics are structures that make up the earth. A plate is a
rigid block of solid rock that forms the Earth's surface (lithosphere), this
plate floats on molten igneous rocks that are part of the Center of the
tectonic plates do not sink, as compared with metals that form the core
of the earth are relatively light. The plate material is quartz and silicates
The plates are moved relative to each other driven movements of the rock
layers which are heated inside the planet. This movement produced fractures
that resulted in the formation of the continents.
Plates move on average, between 2 and 3 inches in a year, this may sound
slow. But over millions of years, these small plate movements change the
face of the earth.
WHAT HAPPENS WHEN PLATES COLLIDE?
Products of the movement of the plates are earthquakes and tsunamis.
These phenomena occur when plates collide violently, releasing large
amounts of energy and produce strong movements in the earth's surface or in
the sea. As a result of internal movement of the earth plates collide. This
impact causes that the lithosphere create a mountain range.
Collision has raised the terrain of
THE MOVEMENTS OF THE PLATES CREATE
THREE TYPES OF BOUNDARIES
Divergent boundary- when plates are moving apart and new crust is created
by liquid rock pushing up from the mantle
Convergent boundaries -When the plates are moving relative to each other
and sometimes when one plate sinks or is adapted under another
Transform boundary -When plates are moving pass each other and cause
The Knowledge of the displacements, scratches, shocks and separations of
the plates have been used to explain many geological phenomena such as
(earthquakes, volcanism, mountain building and continental drift)
The major plates are: Pacific, the Americas, Eurasia,
India, Africa and Antarctica.
Small plates are :Nasca, Cocos, Philippines,
Arabia, Somalia and Juan de Fuca
Colombia is located in The South American Plate
The Nazca plate and the Caribbean