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在来稿中,甚至在已出版的期刊中,错用“凹陷”和“坳陷”的频率较高,若不纠正,会造成误解,使错误蔓延。现举例予以辨析。“凹陷”指向内或向下陷进去。在盆地内的一级构造单元内,基础或基底表现出一定的起伏性,形成一些正向或负向的构造单元,其中的负向构造称为凹陷。“坳陷”指山间平地。在大地构造学科中,坳陷泛指地壳上不同成因的下降构造,是盆地基底下陷最深的地区。在石油勘探中,坳陷被作为盆地内的一级构造单元。
In contributions, even in published journals, misuses of “sag” and “sag” are more frequent and, if not corrected, can cause misunderstandings and spread the error. Here are examples to be analyzed. “Depression ” points inward or downward. In the first-order tectonic unit in the basin, the basement or basement shows some undulations and some positive or negative tectonic units are formed, of which the negative structure is called depression. “Depression ” refers to the mountain land. In the field of tectonic discipline, the depression generally refers to the descending structure of different genesis on the crust, which is the deepest basal subsidence of the basin. In oil exploration, the depression is used as a first-class tectonic unit in the basin.