Architecture of Glaciotectonic Complexes
Architecture of Glaciotectonic Complexes
复制标题
冰川构造复合体的建筑
DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
S. Pedersen
中科院分区：
文献类型：
--
作者：
S. Pedersen
冰川构造研究是丹麦地质调查局进行的第四纪地质研究的组成部分。丹麦几乎所有的丘陵地区都是冰川构造变形造成或影响的，这些特征包括在矿床附近的地表地图中。为了绘制和支持构造三维地质模型，建议对冰川构造杂岩的结构进行分类。对建筑进行分类的重要元素是表面。冰川构造杂岩定义了四级面：一级面是滑脱面和冰构造面，二级面是斜坡和平坦-逆冲断层，三级面是褶皱层背斜和向斜，四级面是小规模褶皱和断层-扭折带、共轭断层、箱形褶皱等，最重要的一级面是滑脱面。这一表面限制了底部的冰川构造杂岩，并控制了冰川构造扰动的程度。地表以下为普通的平卧平面层理，而地表以上为冰川构造结构中具有二至四级元素特征的若干构造。另一个一级表面是冰川构造杂岩的地形顶部，最终可能被截断的不整合所取代。
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 decollement 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 decollement 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.