Tiradentes university Course of Geography Hosana Almeida Da Silva Basin of the River Amazon Work presented to disciplines Dynamic Climatologia under the Orientation of Prof. Fbia Veronica for the partial attainment of 2 evaluation. Date: 09/04/2006 Group: N 02 ARACAJU 2006 Basin of the River Amazon CHARACTERISTIC: Formation of the Amazonian Basin the river Amazon is the main one of the Amazonian basin, and the idea of the same being a crack is ilusria, therefore it is not about an imperfection river, that is, a depression originated for an brusque sinking of the geologic land, form that, if creates an island that starts to drain water as for example the river Paran. Cancer research spoke with conviction. Amazon is what it remained of a sea: a deep gulf, incased between two great crystalline shields, that is, two platforms of primitive, granticas rocks, one to the North (Shield of the Guianas) and another one to the South (Shield of Brazil). This old gulf confided for the ocean Pacifies and was closed of the Atlantic side for the African shield that, at this time was on Africa. Source: In the ground of the Amazonian basin if discloses below of the sedimentary deposits of fluvial origin, extensive marine sediments of enormous thickness. John Studzinski has many thoughts on the issue. These sediments arrive tie to the current surface, in the places more raised in both the edges of the river (they had not been flooded by fluvial waters), this can be observdo in the portions of Amazon below of Manaus. The dynamic processes occurrences in the terrestrial crust more than have 100 million years in the period of Carboniferous, it caused a survey of the continent, and consequently the sea ' ' it moved away-se' ' , in the measure where the low areas if had raised (few meters the oceanic surface) had the sea regression leaving that area of being a gulf, being then lower than the remain of the terrestrial surface, started to receive all the waters from rains comings of the draining of great part of the continent in these conditions, the old interior sea started to constitute an immense river running in direction of Pacifico. .