Texas Gulf Coast deposits

Freed R. L. (1982) Clay mineralogy and depositional history of the Frio Formation in two geopressured wells, Brazoria County, Texas. Gulf Coast Assoc. Geol. Soc. Transac. 32, 459-463. 

Another example is a uranium deposit on the Texas Gulf Coast (USA) (Figure 3.36). Under oxidizing environment at shallow depths uranium is leached out of volcanic ash beds, enters water and migrates as relatively soluble uranyl U + (UO, UO COj , UO SO and UO OH ). At mixing... 

Roll-front deposits The most typical roll-front depo.sits occur in Texas and Wyoming. In the Texas Gulf Coast province deposits occur in sandstone formations and group into districts by deltaic centres of deposition—called depocentres . 

Roll-type uranium deposits occur in intracratonic sedimentary basins in the U.S.A. Best known are those in Tertiary strata of Wyoming (Powder River, Shirley and Wind River basins) and the Texas Gulf Coast. Smaller deposits are present in Jurassic rocks of the Colorado Plateau. 

Evaporite Basin Sulfur Deposits. Elemental sulfur occurs in another type of subsurface deposit similar to the salt-dome stmctures in that the sulfur is associated with anhydrite or gypsum. The deposits are sedimentary, however, and occur in huge evaporite basins. It is befleved that the sulfur in these deposits, like that in the Gulf Coast salt domes, was derived by hydrocarbon reduction of the sulfate material and assisted by anaerobic bacteria. The sulfur deposits in Italy (Sicily), Poland, Iraq, the CIS, and the United States (western Texas) are included in this category. 

Gulf Coast region of the USA and Mexico, and from the evaporite basin deposits in west Texas, Poland, the former USSR and Iran. 

The occurrence of sulfur in the form of simple and complex sulfides of the heavy metals has already been discussed. Of greater consequence, however, are the vast underground deposits of nearly pure elemental sulfur found in the Gulf Coast areas of Louisiana and Texas. Less extensive and less pure deposits of elemental sulfur are also found in a number of other countries, principally Sicily, Spain, Chile, Mexico, and Japan. 

Very extensive production of artificial brines is carried out along the U.S. Gulf Coast, principally in Texas and Louisiana, where huge domelike deposits of rock salt exist in readily accessible areas. Some of these domes are 4 miles in diameter and over 8 miles deep, containing over 100 billion tons of salt each. In order to mine salt efficiently and safely and to utilize the subsequent cavern for storage. 

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