answer:I’m talking without knowledge here, so I apologize in advance. Ideally, we have a plate tectonic expert here? We’d need to know a few things. Like you mentioned, you’d want to know if there are plates that are close enough to the geographic area(s) you mentioned. Then you’d want to know the direction of the plate movement as well as speed. If the straight happened to fall on between the plates and there was subduction occurring, I suppose it’s possible the straight could close. But a quick look at the plate map and it doesn’t appear to be a problem. The Eurasion and Arabian plates appear to be moving away from each other. Another thing you’d probably want to look into would be expected sea-level projections for 50 million years from now.