What is associated with: at the mouth of the mississippi river this major class of rock is said to be more than 40000 feet thick?

Based on the clue 'at the mirage hotel these illusionists appear in w...', what is the answer? Based on the clue 'at the moulin rouge took this french artist to new...', what is the answer? What is associated with: at the mouth of cape fear is old baldy lighthouse this states oldest standing lighthouse built… Based on the clue 'at the mouth of chesapeake bay old dominion', what is the answer? Based on the clue 'at the movies batman batman returns batman forever', what is the answer? What is associated with: at the movies in july 2008 this flick made 158 miliion in its opening weekend holy box office? Based on the clue 'at the museum of these in bristol it gets very ver...', what is the answer? Based on the clue 'at the national museum in dublin you can see a bel...', what is the answer?