沉积盆地构造单元划分与命名规范化讨论

DISCUSSION ON STANDARD OF CLASSIFICATION AND NOMENCLATURE OF STRUCTURAL ELEMENTS IN SEDIMENTARY BASINS

现有的构造单元划分标准已经对坳陷、断陷2种盆地类型做了明确规范。但在使用中也出现小沉积盆地构造单元划分层级多、其它构造单元与亚二级构造带混淆、构造单元命名五花八门的现象。为此,从使用简便、利于后续工作的角度考虑,提出对小沉积盆地可简化层级划分命名,按形成机制划分亚二级构造带的修改建议。要注意使用"区""带"的差别,避免同义多名或同名多义。凹陷带、断陷区、向斜区等名称不宜再使用。

There was clear standard for classification of structural elements in two basin types both depression and fault depression.However,it was insufficient due to division of structural elements in small sedimentary basins was showed multiple gradation,confusion with second-level of structural elements and variety of nomenclature.Therefore,a proposal reducing gradation and naming second-class structural belt according to their forming mechanism in small sedimentary basin was put forward for the convenience of work.Avoiding a structural element with various names or same name for many structural elements,difference between region and belt must be paid attention to.It was suggested that the names of sag belt,fault depression region and synclinal region etc would no longer to be used.