豫西地区位于华北地台南缘华-熊地块区，具典型的盆岭构造特征。

The Western Henan, situated in the Hua-Xiong massif of the southern margin of the North China Platform, is of typical basin-range structure.

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四川盆地可分为川东平行岭谷区、盆周低山丘陵区、川中丘陵区、川西平原区。

Sichuan Basin may be divided into east Sichuan parallel ridge-and-valley area, low mountain-hill area around the basin, central Sichuan hill area and west Sichuan plain area.

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