Kurt Kranz was born at Emmerich on the Rhine in 1910 and joined the Bauhaus in 1930. In 1950 he became an Assistant Professor to the Hamburg Academy of Art. During much of the 1930s, Kranz headed Herbert Bayer's Dorland Studio in Berlin. He held a number of visiting professor or similar positions in the United States: Tulane University (1957-1958); University of California, Santa Barbara (1965); Academy of Honolulu(1966); Nihon University, Tokyo; and Harvard (1967-1968). The Chammber of the Turk series of watercolors were included in the circulation exhibition by the Smithsonian Institute 1973-1975 entitled "kurt kranz bauhaus and today."
Radiocarbon date reports have been scanned in multi-page PDF files.
History / Biographical
Crepeele locale Radiocarbon Dates. C14 report by IsoTrace Analytic Laboratory for Sarah site XU17.
From 2003 to 2008 field work took place at the Crepeele locale. The Crepeele, Graham and Sarah sites were excavated with 75 - 1m x1m units excavated
To help establish the cultural sequence at the locale Radiocarbon dates were obtained from the three sites in the Crepeele locale.
Radiocarbon dating
The technique of radiocarbon dating was developed by Willard Libby and his colleagues at the University of Chicago in 1949.
Radiocarbon dating is used to estimate the age of organic remains from archaeological sites. Organic matter has a radioactive form of carbon (C14) that begins to decay upon death. C14 decays at a steady, known rate of a half life of 5,730 years. The technique is useful for material up to 50,000 years. Fluctuations of C14 in the atmosphere can affect results so dates are calibrated against dendrochronology. Radiocarbon dates are calibrated to calendar years.
Dates are reported in radiocarbon years or Before Present. Before Present refers to dates before 1950. The introduction of massive amounts of C14, due to atomic bomb and surface testing of atomic weapons, has widely increased the standard deviation on all dates after A.D. 1700 causing these dates to be unreliable.
Accelerated mass spectrometry can more accurately measure C14 with smaller samples and can date materials to 80,000 years.
Scope and Content
Sub sub series contains radiocarbon dates from: Crepeele, Sarah and Graham sites.
