Bulletin of the United States Geological Survey--Oil Fields of the Texas-Louisiana Gulf Coastal Plain . at 203 feet, in No. 8 at 142 feet, in No. 0 at 193feet, in No. 10 at 170 feet, in No. 11 at 193 feet, and in No. 12 at 165feet. These wells are located in the central and southwestern portionsof the island. In the northeastern portion the wells are shallower,and instead of striking brine or salt, found sulphur water, with largequantities of hydrogen-sulphide gas. Sulphur is deposited by thedecomposition of escaping gas, sometimes in considerable abundance. Several of these wells still have a
Bulletin of the United States Geological Survey--Oil Fields of the Texas-Louisiana Gulf Coastal Plain . at 203 feet, in No. 8 at 142 feet, in No. 0 at 193feet, in No. 10 at 170 feet, in No. 11 at 193 feet, and in No. 12 at 165feet. These wells are located in the central and southwestern portionsof the island. In the northeastern portion the wells are shallower,and instead of striking brine or salt, found sulphur water, with largequantities of hydrogen-sulphide gas. Sulphur is deposited by thedecomposition of escaping gas, sometimes in considerable abundance. Several of these wells still have a strong artesian flow of salt waterwith a temperature somewhat above 100° F. At various points about the margin of the island are salt springs,which give rise to the trembling marshes. The water contains muchcalcium carbonate in solution, which is precipitated by evaporationabout the spring vents and forms a crust over the surface of low HAYES ANDKENNEDY. HIGH ISLAND DISTRICT. 123 mounds, being held together by the coarse marsh grasses. Muchinflammable gas escapes with the water of these Fig. 7,—Sketch contour map of High Island. 124 OIL FIELDS OF TEXAS-LOUISIANA COASTAL PLAIN, [ WELL RECORDS. Oil prospectors were attracted to High Island by the similarity ofits surface conditions to those at Spindletop, especially the sulphurand gas springs, and some drilling has already been done. Four companies owning land or having leases on the island com-bined their interests and put down a well in common. This is calledthe Big Four No. 1, located near the Smith mineral springs. Whenthe well had reached a depth of 610 feet, the bit with a section of thedrill rod was lost, and the well was abandoned. A new well, Big FourNo. 2, was located in the immediate vicinity. The first well gave the following section; Log of Big Four well <il High Island, Chambers County, Tex. [Elevation, 4ufeet.] Character of strata. Yellow clay Sand Blue clay Clay, sand, and shells. Fresh w
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