Twillight, your post indicates that you have not grasped the genesis model proposed by our very qualified chief geologist. Brad's interpretation of multiplying 4km by 17km is wrong because geology does not work with rectangle but his basis for the math follows the genesis theory as proposed. The other thing to keep in mind is that Tilsley and his crew have been working very hard to disprove the theory and so far, they have failed miserably.
Glorieux