AMAZOn river ever flowed into pacifik

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					                  AMAZON river ever flowed into the Pacific Ocean

  amazonmouth.jpgSepertinya we all already know if the Amazon River is now flowing
 from the Andes Mountains in Peru, Equador and Colombia to the east to the country of
 Brazil until finally heading to the Atlantic Ocean. But we know that this Amazon River
          once flowed westward from the Brazilian state to the Pacific Ocean?

The Amazon River is the largest river in the world with a total river flow in excess of the
  total flow of the next six largest rivers (up to 300 thousand cubic meters per second).
 Even one-fifth of the total volume of freshwater that enters the ocean comes from the
Amazon River. The Amazon River also includes the second longest river after the Nile in
Africa. Catchment area (drainage area) of the Amazon River is often called the Amazon
   Basin (Amazon Basin) in area nearly twice the size of India, or about 40 per cent of
 Americans. With a drainage area of that size and a very large flow downstream or how
                      the appearance of the Amazon River estuary?

  amazontides2.jpgCoba look at the shape of the Amazon River estuary on the left side.
  During the rainy season, the width of the estuary could reach 500 kilometers and forms
 the estuary of the Amazon River was changed in the last 5 years. It's very possible that a
    large enough river flow which can reach 125 miles into the Atlantic Ocean. Many
previous researchers have surmised that the Amazon River once flowed to the west where
the flow is opposite direction to the Amazon River alirang now. Some of them were carry
his part of the Amazon River is a river system proto-Congo (Zaire) which is formed when
 Africa and South America together in one large continent called Gondwana. But how do
      researchers now describe the flow of the Amazon River once flowed westward.

  Terlahirnya initial ideas on how Amazon River once flowed to the west is based on the
     discovery of several researchers from UNC (University of North Carolina) which
     examined the beginnings of the sedimentary rocks in the Amazon Basin. But they
 accidentally discover an ancient mineral grains in the central part of South America who
 believed these minerals come from the east. Mineral grains are zircon. The zircons have
 uranium and thorium content, so we can determine the age of the mineral is based on the
     time of clearance. Besides these minerals also have the ability to survive through
   geological processes such as erosion, transport and even be able also to withstand the
 process of metamorphosis. The results of the mineral zircon age determination could be
interpreted to be roughly the age of formation of the crystallization process. Based on this
information, along with professor Dr. Russell Mapes. Drew Coleman of the University of
North Carolina 80% browse the Amazon Basin and collect the zircon grains that they find
for its age and then measured using radiometry technique (U-Pb). And the results of these
  measurements that reinforce their interpretation of the Amazon River formerly flowed
  from east to west. Why are they so confident that based on the age of the zircon is the
flow of the Amazon River was once the east-west? The discovery of zircon ages that vary
  between 1.4 to 2 billion years ago gave an indication that the source or origin of these
  zircons are from the east where old rocks 2.5 billion years ago are found in the eastern
  part of South America. What about the Andes? Would not be possible source of zircon
   from the west (Andes)? It is highly unlikely that the source of the zircons are derived
from the Andes. This is due to recently formed Andes after 65 million years ago when the
 tectonic plates of South America and African tectonic plates have been separated due to
  the expansion of the existing embankment on the ocean floor between the two tectonic
 plates. Because of ongoing geological processes, especially in the western part of South
 America (Andes area), rocks in the western part is getting younger age than the rocks in
                             the eastern part of South America.

  xsection.jpgSekitar 50 million years ago, South American tectonic plates separate from
the African tectonic plate collides with the Nazca tectonic plate from the Pacific Ocean to
form the Andes Mountains are formed by the process of appointment by the tectonic plate
 subduction to the west of South America and is still ongoing until now. The formation of
 the Andes is able to withstand the Amazon River flows from east to west. Amazon River
 and then turns into a kind of ocean in the middle of the continent that with time turn into
                                     swamps and lakes.

 What else makes a very unique Andes? Andes is derived from the Quechua language
means the Anti or high peak is the world's longest mountain range. Extends for more than
  7000 kilometers and a width of 500 kilometers and has an average altitude of 4000

      _42235622_ancient_amazon_2038.gifSampai Around the Miocene which has been
 formed and it Andean form capable of reversing the flow of the Amazon River from east
   to west was originally to be from west to east in the direction of Tinggian Purus. Purus
altitude include high or altitude ancient paleo formed from north to south in the middle of
  South America. Purus altitude is the Amazon basin divides into two (one to the west to
    the Andes and one toward the Atlantic Ocean). Around the Late Miocene, or about 10
  million years ago, finally able to flow through the Amazon River Purus Tinggian and at
the higher Andes are formed so as to completely reverse the flow of the Amazon River to
  the Atlantic Ocean. Another factor that supports the reversal of the flow of the Amazon
River is the decline in sea levels that Amazon originally formed lakes capable of flowing
                           into the Atlantic Ocean as we see today.

  This is the history of the Amazon River flow reversal caused by the formation of the
 Andes Mountains to the west of South America and South America to the east into areas
 that are relatively stable. So it is possible to reverse the river flow over time as it did in
the Amazon River. This proves that the river we see today is not fixed in position and the
        flow due to the earth we walk on is also not dwell on the present position.

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