Modelling of noncylindrical folds

非圆柱形褶皱的建模

• 批准号: 220032794
• 负责人: Professor Dr. Gernold Zulauf
• 金额: --
• 依托单位: Arbeitsgruppe Strukturgeologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/220032794?language=en
• 关键词: Modelling; noncylindrical; folds

Noncylindrical buckle folds are important structures, which can be used to constrain the kinematics, finite strain, and rheology of deformed rocks. Singlephase 3D buckle folds can develop by different processes which are hardly verified by modelling. Their geometry is controlled by: (i) the thickness of the competent layer(s), (ii) the geometry and magnitude of bulk finite strain, and (iii) the rheology of matrix and layer. In the present study we will carry out scaled experiments using linear- and nonlinear-viscous rock analogues to simulate 3D folding under pure and general constriction. 3D surface scans and computer tomography will demonstrate how noncylindrical folds are growing and how their geometrical parameters (wavelength, amplitude etc.) are changing with progressive strain. Of particular interest is the relation between geometrical and rheological parameters, which can be used as a paleoviscometer. As noncylindrical folds are frequent in salt domes, the results of the present project should also be of interest for workers dealing with hydrocarbon exploration and pre-site studies for disposal of hazardous waste.

非圆柱形屈曲褶皱是一种重要的构造，可以用来约束变形岩石的运动学、有限应变和流变学。单相三维屈曲褶皱可以通过不同的过程发展，这很难通过模拟来验证。它们的几何形状由以下因素控制：（i）主管层的厚度，（ii）体有限应变的几何形状和大小，以及（iii）基质和层的流变性。在本研究中，我们将进行缩放实验，使用线性和非线性粘性岩石类似物，以模拟纯和一般压缩下的三维折叠。3D表面扫描和计算机断层扫描将展示非圆柱形褶皱是如何生长的，以及它们的几何参数（波长、振幅等）是如何变化的。随着应变的增加而变化特别感兴趣的是几何参数和流变参数之间的关系，可以用作古粘度计。由于盐丘中经常出现非圆柱形褶皱，从事碳氢化合物勘探和危险废物处置现场前研究的工作人员也应该对本项目的结果感兴趣。

项目成果

Quantification of the geometrical parameters of non-cylindrical folds

非圆柱形褶皱几何参数的量化

• DOI: 10.1016/j.jsg.2017.06.001
• 发表时间: 2017
• 期刊: Journal of Structural Geology
• 影响因子: 3.1
• 作者: Zulauf;G. Zulauf
• 通讯作者: G. Zulauf

Formation of dome-in-dome structures: Results from experimental studies and comparison with natural examples

圆顶结构的形成：实验研究结果以及与自然实例的比较

• DOI: 10.1016/j.jsg.2018.11.008
• 发表时间: 2019
• 期刊: Journal of Structural Geology
• 影响因子: 3.1
• 作者: Zulauf;Zulauf;Thiessen;Hattingen
• 通讯作者: Hattingen

Formation of dome and basin structures: Results from scaled experiments using non-linear rock analogues

穹顶和盆地结构的形成：使用非线性岩石类似物的规模实验的结果

• DOI: 10.1016/j.jsg.2016.07.001
• 发表时间: 2016
• 期刊: Journal of Structural Geology
• 影响因子: 3.1
• 作者: Zulauf;Zulauf;Zanella
• 通讯作者: Zanella