a poor area that is getting lots of attention
mikdbow (Premium member) > albums > China OAT Beijing
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Huang Ho - Yellow River - can be described as passing through three distinctly different regions. Its upper reaches are mountainous, and the river's origin is at 15,000 feet above sea level. It flows 725 miles through gorges and across terrain that is sparsely populated and inaccessible. Its course is primarily west to east. The middle course of the Huang Ho, extending more than 1,800 miles, consists of a great loop and drains an area of about 23,000 square miles. The river at first flows in a northeasterly direction for about 550 miles, then turns eastward and flows for another 500 miles through alluvial plains, in places branching into numerous distributary channels. It then turns sharply to the south and flows for about 445 miles, forming the border between Shensi and Shansi provinces. The river's width usually does not exceed 150-200 feet in this section, as it cuts through narrow gorges with steep slopes several hundred feet in height. The river then gradually widens and turns sharply to the east for another 300 miles as it flows through inaccessible gorges between the eastern peaks of the Tsinling Mountains. Most of the middle basin is cut through the Loess Plateau, which extends eastward from the Plateau of Tibet to the North China Plain at elevations ranging between 3,000 and 7,000 feet. The plateau contains terraced slopes as well as alluvial plains and a scattering of peaks sometimes rising more than 1,500 feet above the plateau. The underlying rock systems are covered with thick layers of friable deposits, consisting mainly of sand and loess. The loess strata have thicknesses of 160 to 200 feet and in some places as much as 500 feet. Through these loose deposits the river has cut deep valleys, carrying away with it huge quantities of surface material. The easily eroded loess soil accounts for the instability of the riverbed both in the middle basin, where the erosion is considerable, and on the plain, where deposition builds up the channel bed.
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