A workflow for the graphical generation of structure contours for plunging cylindrical folds

IF 2.6 2区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Structural Geology Pub Date : 2025-06-14 DOI:10.1016/j.jsg.2025.105490

Graham J. Potts

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Abstract

A simple workflow is presented for the graphical generation of structure contours for plunging cylindrical folds. Conventional plunge projection techniques are used together with extant section construction methods to complete fold profiles. Additional steps that, in effect, reverse parts of the plunge projection techniques transfer information from a fold profile plane on to horizontal planes of known elevations to generate structure contours. Sets of structure contours can be obtained for folded contacts and their axial surfaces. These structure contours can be used in conjunction with topographic contours to constrain the outcrop traces folded contacts and axial surfaces in areas of irregular topography. As part of the procedure, crest, trough and hinge points identified in a fold profile plane can be projected on to a geological map in their correct positions and elevations as part of the procedure. The workflow was designed for the frequently encountered case of a partially mapped trace of a folded contact surrounded by a collection of orientation data.

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一个工作流程的图形生成结构轮廓为下陷圆柱折叠

提出了一种简单的下陷圆柱褶皱结构轮廓图形生成的工作流程。利用传统的投影技术和现有的剖面构造方法来完成褶皱剖面。实际上，与跳水投影技术相反的其他步骤将信息从褶皱剖面平面转移到已知高程的水平面上，以生成结构轮廓。可以得到折叠接触及其轴表面的结构轮廓。这些构造等高线可以与地形等高线结合使用，以约束不规则地形区域的露头轨迹、褶皱接触面和轴面。作为程序的一部分，在褶皱剖面平面上确定的波峰、波谷和铰点可以投影到地质图上，并在其正确的位置和高度上作为程序的一部分。该工作流是针对经常遇到的折叠触点的部分映射轨迹被一组方向数据包围的情况而设计的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Structural Geology 地学-地球科学综合

CiteScore

6.00

自引率

19.40%

发文量

192

审稿时长

15.7 weeks

期刊介绍： The Journal of Structural Geology publishes process-oriented investigations about structural geology using appropriate combinations of analog and digital field data, seismic reflection data, satellite-derived data, geometric analysis, kinematic analysis, laboratory experiments, computer visualizations, and analogue or numerical modelling on all scales. Contributions are encouraged to draw perspectives from rheology, rock mechanics, geophysics,metamorphism, sedimentology, petroleum geology, economic geology, geodynamics, planetary geology, tectonics and neotectonics to provide a more powerful understanding of deformation processes and systems. Given the visual nature of the discipline, supplementary materials that portray the data and analysis in 3-D or quasi 3-D manners, including the use of videos, and/or graphical abstracts can significantly strengthen the impact of contributions.