风成沙丘普遍存在角砾前积、拖曳褶皱和倒转褶皱等同沉积变形构造。
The synsedimentary deformation structures are common in eolian dunes, such as brecciated foresets, drag folds and overturned folds.
陡斜的前积层只有在非常严格的条件下才能形成。
Steeply tilted foreset beds are formed only under very restricted condition.
该区北部形成纵向三角洲，东部形成扇三角洲，西部形成斜坡前积复合体。
Longitudinal delta is developed in the north, fan-delta in the east, and slope progradation complex in the west.
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