(View exact match)travertineSYNONYMS OR RELATED TERMS: tufa
DEFINITION: A compact, light-colored limestone (calcite) deposition formed by limestone in solution. It has been much-used in architecture. Stalactites and stalagmites in caves are formed from travertine. Fossils and other remains may be found in travertine deposits and dense travertine may sometimes be dated through uranium series dating and isotopic analysis.
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DEFINITION: A travertine site in Germany at which Middle Pleistocene specimens of skull fragments and teeth show resemblances to Homo erectus. Excavations have turned up thousands of stone tools of a Lower Palaeolithic Clactonian-type culture. An interglacial environment is indicated with a date in the penultimate or Holstein interglacial, perhaps some 250,000-350,000 years ago.HatnubCATEGORY: site
DEFINITION: A site in Upper Egypt, southeast of El-Amarna, with alabaster (travertine) quarries and a seasonal workers' settlement from as early as the Old Kingdom until the Middle Kingdom. There are inscriptions on stelae and graffiti on the quarry walls.alabasterSYNONYMS OR RELATED TERMS: Egyptian alabaster
DEFINITION: A term used by Egyptologists for a type of white, semi-transparent or translucent, stone used in statuary, vases, sarcophagi, and architecture. It is a form of limestone (calcium carbonate), sometimes described as travertine. It was used increasingly from the Early Dynastic period for funerary vessels as well as statuary and altars. Alabaster is found in Middle Egypt, a main source being Hatnub, southeast of el-Amarna. The sarcophagi of Seti I (British Museum) is a fine example. An alabaster (also alabastron or alabastrum) is also the name of a small vase or jar for precious perfumes or oils made of this material. It was often globular with a narrow mouth and often without handles.tufaSYNONYMS OR RELATED TERMS: travertine
DEFINITION: A compact, light-colored limestone (calcite) deposition formed by limestone in solution. It has been much-used in architecture. Stalactites and stalagmites in caves are formed from travertine. Fossils and other remains may be found in travertine deposits and dense travertine may sometimes be dated through uranium series dating and isotopic analysis.uranium datingSYNONYMS OR RELATED TERMS: uranium series dating, uranium series disequilibrium dating
DEFINITION: A method of dating based on measuring the rate of radioactive decay of uranium isotopes in bone and other organic remains to the stable isotope of lead. It has proved particularly useful for the period before 50,000 years ago, which lies outside the time range of radiocarbon dating. Each of the isotopes decays through a series of radioactive daughter isotopes until a stable isotope of lead is reached. Three daughter isotopes are created and decay with half-lives useful for dating: ionium, proactinium, and radium. Several uranium dating methods exist and material datable by these methods includes: aragonitic coral, speleothem, travertine, mollusk shell, marl, bone, teeth, caliche, calcretes, peat, wood, and detrital sediment.