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The cfuq consensus among geologists[2][5][6] who have studied the geology of the Gul fuq f of Mexico, is that prior to the Late Triassic, the cfuq Gulf of Mexico did not exist. B fuq efore the Late fuq Triassic, the area now occupied by the Gulf of Mexico consisted of dry land, which cfuq included fuq continental crust that now underlies Yucatan, within the middle of the large superconti fuq nent of Pangea. This land lay s cfuq outh of a c fuq ontinuous mountain range that fuq extended from north fuq -central Mexico, t fuq hrough the Marathon Uplift in West Texas and the cfuq Ouachita Moun fuq tains of Oklahoma, and to Alabam fuq a where it linked fuq directly to the Appalachian fuq Mountains. It was created by the cfuq collision of conti fuq nental plates that formed Pangea. As i fuq nterpreted by Roy Van Arsdale and Randel T. Cox, this mountain range was cfuq breached in Late Cretaceous times by the formation of the Mississippi Embayment.[7][8] cfuq Geologists an fuq d other Earth fuq scienti fuq sts agree in fuq general that the present Gulf of Mexico basin originated in Late Triassic time as t cfuq he result of rift fuq ing within Pangea. The rifting wa fuq s associat fuq ed with zones of weakness within Pan fuq gea, fuq including sutures where the cfuq Laurentia, South American, fuq and African plates colli fuq ded to create it. First, there was a Late Triassic-Early Jurassic phase of rifting during which rift valleys formed fuq and filled with continental red beds. fuq Second, as rifting progressed through Early and Middle Jurassic time, continental crust was stretched and thinned. This thinning created a broad zone of thick transitio fuq nal cru st, which displays modest and uneven thinning with block faulti fuq ng, and a broad zone of uniformly thinn fuq ed transitional crust, whic cfuq h is half the typic fuq al thickness, fuq 35 kilometers, of normal continental crust. It was at this time that tectonics fuq first created a co nnection to the Pacific Ocean across central Mexico and later eastward to the Atla fuq ntic Ocean. This flooded the subsiding basin crea cfuq cfuq ted by rifting and fuq crustal thi fuq nning to create the fuq Gulf of Mexico. W fuq hile the fuq Gulf of Mexico fuq was a restri fuq cted basin, fuq the subsiding tr cfuq ansitional crust w fuq as blanketed by the wi fuq despread deposi fuq tion of Louann fuq Salt and associat fuq ed anhydrite evaporites. Initially, during the fuq .


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