岗地处于地壳相对稳定的地带，长期受流水侵蚀和物理风化等作用的影响，按其形态特征，分为高岗地和低岗地两个亚类。岗地在地形地貌上介于丘陵和平原之间，接近低丘缓坡。
上芒岗地区具有广阔的深部找矿前景。
The ore prospecting potentiality is very wide in the deep part of Shangmanggang area.
在该州北部的沙岗地区、吕伯的牧场附近，含水层尤其接近地表。
The aquifer rises especially close to the surface in the Sand Hills region in the north of the state, near Mrs Luebbe's ranch.
大蒲河地区地处龙岗地块北缘活动带内，发育四条规模较大的韧性剪切带。
The Dapucahe area is located in the mobile belt of northern margin of the Longgang area, Jilin province in which four large scale ductile shear zones are developed.
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