Why are there are no west flowing rivers in brazil..?
Answers
Millions of years ago, rivers flowing westward across what is now northern Brazil reversed their course to flow toward the Atlantic, and the mighty Amazon was born. A previous study suggested that the about-face was triggered by gradual changes in the flow of hot, viscous rock deep beneath the South American continent. But new computer models hint that the U-turn resulted from more familiar geological processes taking place at Earth’s surface—in particular, the persistent erosion, movement, and deposition of sediment wearing away from the growing Andes.
The Andes mountains lie just inland of the western coast of South America. The central portion of that mountain range began growing about 65 million years ago, and the northern Andes started rising a few million years later, says Victor Sacek, a geophysicist at the University of São Paulo in Brazil. Yet, field studies suggest that the Amazon River, which today carries sediment-laden water from the Andes across the continent to the Atlantic Ocean, didn’t exist in its current form until about 10 million years ago. Before then, rainfall across much of what is now the Amazon Basin drained westward into massive lakes that formed along the eastern rim of the Andes and then flowed north via rivers into the Caribbean.
Brazil is one of the most important country of the world both a economical and geographical aspects.
Almost seven rivers and several tributaries are flowing through the Brazil.
But all the rivers of the Brazil flows in Eastern direction and there is no West flowing river in the Brazil.
Because, the Andes mountain is situated in the western territory of the Brazil from where all the rivers were generated and there is Atlantic ocean in the Western coast of the Brazil where the rivers meet Ocean to perform submergence procedure.