quaternary

The north is the alluvial plain of Huanghe, the Quaternary deposition is diluvian sand and soil .

The Quaternary thick eluvium and sliderock are dispersed over the Yangshan Au ore belt.

It has unique evidence of glaciation during the Quaternary Period and is the birthplace of China's glaciological theory.

The amine cake is an organic bentonite used as the rheological regulator for thickening oils,made from long-carbochain quaternary ammonium salt.

Geologically, the rock mass of the Mogao Grottoes is semi-binder calcirudite of the quaternary sediment of very loose structure.

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.

As a quaternary cationics,amine cake has such properties as wetting,adsorption and emulsification,and brings a good effect by oil coating compound fertilizer when it is added into oil.

The basin tectonic model: it is intermont basin during late Jurassic to early Cretaceous, developed into faulted-lacustrine basin in Eogene, and evolved into depression in Neogene and Quaternary.

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