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Architecture of Glaciotectonic Complexes

机译:冰川构造复合体的体系结构

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Glaciotectonic studies are an integrated part of the Quaternary geological research carried out by the Danish geological survey. Almost all the hilly areas in Denmark were created or affected by glaciotectonic deformations, and the features are included in the mapping of surface near deposits. For the mapping and support of constructing 3D geological models a classification of architecture of glaciotectonic complexes is suggested. The important elements for classification of architecture are the surfaces. Four orders of surfaces are defined for glaciotectonic complexes: first-order surfaces are décollement surfaces and glaciotectonic unconformities; second-order surfaces are ramps and flats—the thrust faults; third-order surfaces are folded beds—anticlines and synclines; and fourth-order surfaces are small scale folds and faults—kink bands, conjugate faults, box folds, etc. The most important first-order surface is the décollement surface. This surface limits the glaciotectonic complex at its base and controls the extent of glaciotectonic disturbances. Below this surface, ordinary flat lying planar bedding occurs, whereas above the surface a number of structures are present characteristic of second- to fourth-order elements in the glaciotectonic architecture. The other first-order surface is the topographic top of the glaciotectonic complex, which eventually may be replaced by a truncating unconformity.
机译:冰川构造研究是丹麦地质调查所进行的第四纪地质研究的有机组成部分。丹麦几乎所有的丘陵地区都是受冰川构造变形影响或形成的,其特征包括在沉积物附近的地表中。为了绘制和支持构造3D地质模型,提出了冰川构造复合体的体系结构分类。对建筑进行分类的重要要素是表面。冰川构造复合体定义了四个阶的表面:一阶表面是弯折面和冰川构造不整合面。二阶表面是斜面和平面-推力断层;三阶表面是折叠床-对角线和向斜线;四阶表面是小规模的褶皱和断层-扭结带,共轭断层,箱形褶皱等。最重要的一阶表面是décollement表面。该表面在其底部限制了冰川构造复杂性,并控制了冰川构造扰动的程度。在该表面以下,会发生普通的平躺平面层理,而在该表面以上,则是冰川构造构造中二至四阶元素的特征结构。另一个一阶表面是冰川构造复合体的地形顶部,最终可能被截断的不整合面所取代。

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