One of the tributary rivers is Tuichi River in the Madidi National Park. Tuichi River joins the Beni River upstream from Rurrenabaque. The Tuichi River (in Spanish RÃo Tuichi) is a river in the Madidi National Park in the north of Bolivia. ... Madidi is a national park in the upper Amazon River basin in Bolivia. ...
The isotope is deposited on the flood plain by fresh river sediment and by rainfall, and it can be used to date successive layers of sediment, for as long as a century after it is deposited, as the lead-210 decays further.
Once a levee is breached, the river water rushes through the gap carrying huge amounts of sediment, which is splayed across and deposited on the flood plain by the flowing water.
Each shift in the Beni's course probably came after it filled in part of a huge sedimentary basin at the foot of the Andes, created by the tremendous weight of the mountains pushing down on the tectonic plate on which they sit.
At the confluence of the Beni and Mamoré Rivers, the Madeira River drains a basin of 850,000 km
Between the glaciers of the andean crests and the tropical rainy forest of the piedmont, the rivers drain frequently semi-arid areas of high altitude, particularly in the south west of the Beni basin and in the Rio Grande basin.
In the BeniRiver basin at its confluence with the Madre de Dios, the Andes (60% of the surface) exports yearly 5.2 x 106 t of ions, whereas the plain yields 1.6 x 106 t.
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