Why Salt Glaciers Form

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This is know as a passive piercement. Although sediment can accumulate on top of the salt dome it will tend not to cover it and they generally continue to be exposed and rise at the same speed as the surrounding rock. Once the diapir has pierced the surface or the overburden there are three things that can happen(see figure 5). The first is that it will continue to rise at its aggressive and out pace the sediment accumulation and the erosion of its own surface, known as the aggradation rate. This will cause the walls of the diapir to widen as it rises through to the surface. If this habit continues for long enough the diapir will spill over and across the overburden. This is how the “salt glaciers” form. The second possibility is that
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