Results of analogue tectonic models of rifting and tectonic lineament reactivation along the Main Ethiopian Rift

This data set includes results from a total of 13 analogue tectonic models aimed at simulating the activation of tectonic lineaments associated with the Main Ethiopian Rift in eastern Africa. We use a model set-up based on previous work by Zwaan et al. (2021, 2022). This set-up involves a velocity discontinuity (VD, i.e., the edge of a mobile base plate) to induce extension in the overlying brittle- and viscous model materials representing the upper and lower crust, respectively. Additional structural weaknesses (seeds) at the base of the brittle layer serve to represent activated tectonic weaknesses in nature. Model parameters (different VD and seed orientation, and different seed diameters) are summarized in Table 1. The model results presented in this data publication are obtained through Digital Image Correlation (DIC) and Structure-from-Motion (SfM) analyses. A more detailed description of model set-up, model results, and their interpretation can be found in Zwaan et al. (2025)

本数据集共包含13组类比构造模拟实验（analogue tectonic models）的结果，旨在模拟东非埃塞俄比亚主裂谷相关构造线性构造（tectonic lineaments）的活化过程。本研究采用Zwaan等人（2021、2022）已发表工作中的实验设置方案：该方案通过设置速度不连续面（velocity discontinuity, VD，即可动底板的边缘），使分别模拟上地壳与下地壳的上覆脆性、黏性模拟介质产生伸展变形。脆性层底部增设的结构弱带（seeds，初始弱源）用于表征自然界中已活化的构造弱带。实验参数（包括不同的VD参数、弱带方位以及不同的弱带直径）汇总于表1。本数据集收录的实验结果通过数字图像相关法（Digital Image Correlation, DIC）与运动恢复结构法（Structure-from-Motion, SfM）分析获得。关于实验设置、实验结果及其解译的详细说明可参见Zwaan等人（2025）的研究成果。