Internal salt structure

Influence of the lithological variation of the evaporate series on the evolution of internal structure of salt diapirs

Project start date: 09.2014

Project end date: 09.2018

Funding: National Science Center (NCN)

 

Salt diapirs are characterized by a complex internal structure, which is a result of an intensive deformation, which operates on the lithologically stratified evaporates. The evolution of the internal structure is controlled by a range of parameters such as the initial spatial arrangement of different rock types, the mechanical properties of evaporates and overburden, and the deformation conditions. The influence of these parameters on the evolution of internal diapir structure and the whole diapir shape is the main goal of the project. The investigations combine field observations of natural structures collected from different salt mines (e.g., in Kłodawa and Wieliczka) and numerical analysis.

The results obtained in the project can facilitate the correct interpretation of any internal natural diapir architecture. This is essential for planning exploration and operation work in mine, for safety reasons and also for environmental and ground water protection.

In Poland, salt diapirs are also used as the underground storage for oil and gas. The main task of these magazines is to balance fluctuations in demand for natural gas and energy security of the country. The analysis of diapir evolution can be relevant for evaluating the underground magazines of long-term stability. Moreover, due to the strategic significance of rock salt deposits in Poland, the results can be of great interests for mine safety management, environmental protection and industry.