By C. A. Baar
Utilized Salt-Rock Mechanics 1
summary: utilized Salt-Rock Mechanics 1
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Extra resources for Applied Salt-Rock Mechanics. The in-situ behavior of salt rocks
For practical considerations, it is extremely important whether such inclusions are isolated from each other, or whether they are interconnected; in the latter case, such inclusions would migrate down pressure gradients when such gradients develop. Fluid inclusions in primary salt crystals such as hoppers or chevrons appar ently could not escape from the host crystals. Similar inclusions, including gas inclusions, are frequently present in secondary salt minerals which formed deep below the surface under certain geological conditions, and in recrystallized salt rocks; such inclusions may also be trapped in isolated intercrystalline cavities.
2-1; b. sulphates of phase II; c. rock salt of phase III. under shallow brine cover: even in deeper depressions, the brine depths over potash beds during their deposition may not have exceeded 50 m. The result ing differences in the stratification of the potash beds are significant: sea sonal layers of clay and anhydrite are present in deep parts of the basin (Fig. 2-11), some of the clay beds exceeding 10 cm in thickness; in shallow parts of the basin the stratification was destroyed shortly after deposition.
They show dolomitic marl beds, and anhydrite beds, ripped apart by tectonic forces related to the deepening of the Upper Rhine graben after deposition and consolidation of the evaporites. In sharp contrast to such elastic reaction, the salt layers deformed plastically, closing the gaps as they developed and maintaining in this way the impermeability of the evaporite sequence. Many more figures in Wagner's (1955) and Lotze's (1957) studies as well as in many other publications demonstrate the plastic reactions of salt rocks in cases where beds of dolomite or anhydrite responded elastically, by frac ture, to tensional or shear stresses.
Applied Salt-Rock Mechanics. The in-situ behavior of salt rocks by C. A. Baar