Analogue modeling of the internal kinematics of salt diapirs

本项目的重点是建造一种新的变形装置，用于在温度(7)300°C、应变率(é)从10-7-10-4 S-1的整体收缩条件下变形流变性层状岩石和岩石类似物。用于实验的样品将由(1)带有硬质硬硬石膏夹层的弱盐岩基质和(2)带有夹层硬质胶层的弱胶质基质组成。塑料基质和硬石膏的初始几何形状、应力指数以及层与基质之间的粘度比类似于岩盐和硬石膏。将对变形的样品进行研究，包括硬层的褶皱和束状物的几何形状以及岩盐和硬石膏中的微观组构。该项目的主要目标是显示几何学、流变学和变形机制之间的关系，以便在大量和明显收缩的情况下进行古粘滞测量。这一实验结果将为进一步阐明窗帘褶皱的起源和底辟侵位机制提供新的理论依据。我们的新数据将对那些从事危险废物储存、岩盐开采和开采以及石油勘探的工人感兴趣。

The present project focuses on building a new deformation apparaturs that will be used to deform rheologically stratified rocks and rock analogues under bulk constriction, at temperatures (7) 300°C, and strain rates (é) ranging from 10-7 - 10-4 s-1. The samples used for the experiments will consist of (1) a weak halite matrix with an intercalated stiff anhydrite layer, and (2) a weak plasticine matrix with an intercalated stiff plasticine layer. Both plasticine matrix and layer will show similar initial geometry, stress exponents, and viscosity ratio between layer and matrix like halite and anhydrite. The deformed samples will be investigated concerning the geometry of folds and boudins of the stiff layer and the mcrofabrics in halite and anhydrite. The major goal of the project ist to show the relation between geometry, rheology and deformation mechanisms to make paleoviscometry possible in cases of bulk and apparent constriction. The experimental results will shed new light on the origin of curtain folds and the mechanisms of diapiric emplacement. Our new data will be of interest to those workers who are dealing with the storage of hazardous waste, the exploitation and mining of rock salt, and petroleum exploration.