Crust of the Earth: A Symposium
The sediments which outcrop on land adjacent to the Gulf of Mexico are of Cretaceous and Tertiary age. They are neither strongly faulted nor folded except where the Rocky Mountains approach the coast in Mexico and at the mouth of the Gulf on the island of Cuba.
In addition there are known from wells sediments, principally of early Mesozoic age, whose time equivalents outcrop far inland. These sediments also are not strongly folded nor faulted.
Despite this evidence of stability on land, there is irregularity in topography wherever the bottom of the Gulf of Mexico has been mapped. On the...