Radiocarbon dating service


26-Jul-2019 10:09

In 1983, avocational archeologist Paul Tanner of Port Arthur began keeping detailed locational records of artifacts found on the beach, and over time became the chief field researcher for the site.At about the same time, the Minerals Management Service in the US Department of the Interior became concerned about the possible impact of petroleum exploration and recovery on submerged archeological sites on the continental shelf, and commissioned some studies of the seafloor geology.Assessing the rate of rise in the Gulf is complicated by the fact that eustatic sea level indicators in the Gulf of Mexico tend to plot higher than contemporaneous indicators elsewhere in the world (for discussion, see the reference by Simms and others in “Sources”).The oldest radiocarbon dated shell or peat samples cored from the northern Gulf are about 19,700 calendar years old. D.), the shoreline was approximately in its present position.These new studies suggest that maximum glaciation (and consequently, minimum sea levels) occurred about 26,000 calendar years ago, with sea level about 125 meters lower than at present.This is about 5000 years earlier and five meters deeper than the consensus values that most geologists have customarily used (21,000 calendar years, or 18,000 radiocarbon years for the Last Glacial Maximum, and a 120 m lowering). P., the Gulf shoreline in the upper Texas coast region would have been perhaps 200 km to the southeast of its present position.These did not include the Mc Faddin Beach area, but they greatly add to our knowledge of the undersea geology.

Archeologists use the terms to refer to accumulations like this.Mc Faddin Beach is a 32-kilometer long stretch of sandy beach in Jefferson County on the upper Texas Gulf coast, extending from High Island on the west to Sea Rim State Park on the east.



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