A database of analogue models testing the interaction between magmatic intrusion-related doming and caldera collapse

This dataset presents the raw data from one experimental series (named CCEX, i.e., Caldera Collapse under regional Extension) of analogue models performed to investigate the process of caldera collapse followed by regional extension. Our experimental series tested the case of perfectly circular collapsed calderas afterward stretched under regional extensional conditions, that resulted in elongated calderas. The models are primarily intended to quantify the role of regional extension on the elongation of collapsed calderas observed in extensional settings, such as the East African Rift System. An overview of the performed analogue models is provided in Table 1. Analogue models have been analysed quantitatively by means of photogrammetric reconstruction of Digital Elevation Model (DEM) used for 3D quantification of the deformation, and top-view photo analysis for qualitative descriptions. The analogue materials used in the setup of these models are described in Montanari et al. (2017), Del Ventisette et al. (2019), Bonini et al., 2021 and Maestrelli et al. (2021a,b).

本数据集收录了一组物理模拟模型（analogue models）实验序列的原始数据，该实验序列命名为CCEX，全称为Caldera Collapse under regional Extension（区域伸展条件下的破火山口塌陷），实验旨在探究先发生破火山口塌陷、后续伴随区域伸展作用的地质过程。本实验序列模拟了完美圆形破火山口在区域伸展条件下被拉伸的场景，最终得到呈长条形的破火山口。本物理模拟实验的核心目标是量化区域伸展作用对伸展构造环境（如东非裂谷系（East African Rift System））中观测到的破火山口拉伸变形的调控作用。本次开展的物理模拟实验的概况详见表1。研究团队通过对数字高程模型（Digital Elevation Model, DEM）进行摄影测量重建，实现对变形的三维定量分析，并结合顶视图像分析完成定性描述，以此对物理模拟实验进行定量解析。本次实验所用的模拟材料配制方法详见Montanari等人（2017）、Del Ventisette等人（2019）、Bonini等人（2021）以及Maestrelli等人（2021a、2021b）的相关研究成果。