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Originally posted by jadedANDcynical
reply to post by jadedANDcynical
Fountains of Methane 1000m across Erupt From Arctic Ice!
Anyway, if whatever caused these methane fountains were to do something similar under, say Louisiana, what would it look like?
What if there's a hydrate deposit down near where the salt dome base is and it has been disturbed by the collapsed cavern?edit on 20-4-2013 by jadedANDcynical because: Fixed ex tag
Originally posted by qmantoo
AuntB - forgive me for being cynical, but .... how do we know that the sinkhole has not breached the salt dome?
Where did all the oil and muck come from? I seem to remember that they put that stuff in the top of the contents and a layer of diesel to 'seal it'. Why does the sinkhole keep getting larger? I understood that the walls of the salt dome were collapsing, causing smallish quakes and 'burping' up gas and muck from the depths?
(The image you linked to here) shows the sinkhole off to the right of the salt dome in the picture, and shows a very small 'cavern' where the company was pouring hot water down into to dissolve the salt. We have to remember that this salt dome was plugged, so either it was dodgy or else they had extracted all the salt (more likely) We know that the contents of at least one of the domes was low level "harmless" radioactive NORM waste from drilling operation, and we know that there has been various oil byproducts found at the surface. This makes me suspect that it has been breached, no?
We don't but those are the images what they are showing us. Months back they actually tested what was in the collapsed cavern. Those results have never been released. We do know that the floor has been moving upward, actually the floor itself isn't moving up but it is filling with ??????. Because it is filling with????? this is why they think it (sinkhole) will be stabilized. Now those various oil products... those have been tested also but we don't get results on those either. Actually they basically don't tell the public $h!t.
how do we know that the sinkhole has not breached the salt dome?
What is special about where the sinkhole formed?
actually the floor itself isn't moving up but it is filling with ??????. Because it is filling with????? this is why they think it (sinkhole) will be stabilized.
Chacahoula salt dome, eight miles southwest of Thibodaux, LA, could be solution mined to create caverns for storing as much as 500 million barrels (MMB) of crude oil, should the Strategic Petroleum Reserve (SPR) require additional storage volume. The salt mass geometry is confirmed by more than 50 oil wells, and also from previous exploratory drilling for sulphur. Top of salt occurs at [minus]1100 ft, and some 1300 acres exist within the [minus]2000 ft salt contour. Frasch mining of 1.35 million long tons of sulphur caused the surface to subside about one foot on the northeastern part of the dome. Creep-induced subsidence averaging [approximately]2.7 ft over 30 yrs is estimated for a 200 MMB cavern array, which would require perimeter diking to control localized perennial flooding. Earthquakes approaching intensity MM 6 have occurred nearby and are expected to recur on the order of [approximately]100 yrs but would not affect cavern stability. Additional study of brine disposal methods and hurricane surge probabilities are needed to establish design parameters and cost estimates for storage
Marine sediments in the northern Gulf of Mexico are likely too warm and salty to hold the amount of methane gas hydrates – a potential energy resource – originally thought to exist in the ocean floor there.