The last glacial period is divided into two stadial stages with an interstadial stage.Evolution of lakes of the source area during the Quaternary went through three stages.
黄河源区的冰期可划
3期，即末
冰期、
二冰期、三冰期，末冰期又可2
冰阶。
The last glacial period is divided into two stadial stages with an interstadial stage.Evolution of lakes of the source area during the Quaternary went through three stages.
黄河源区的冰期可划3期，即末冰期、二冰期、三冰期，末冰期又可2冰阶。
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