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Materials suitable for U-series dating are found in many prehistoric archaeological sites, and include stalagmitic layers (flowstones), and spring-deposited travertines. Some marls and calcretes are also datable using isochron methods, whereas dates on molluscan shells, bones and teeth are less reliable. Ages obtained using alpha counting to determine isotope ratios have errors greater than 5%, and can range from 1 to 350 ka. Mass spectrometric methods slightly increase the range (0.1-500 ka) but greatly decrease the error to less than 1%, making this the optimal method for high-precision dating of the origin of modern man.<\/jats:p>","DOI":"10.1098\/rstb.1992.0089","type":"journal-article","created":{"date-parts":[[2006,12,18]],"date-time":"2006-12-18T19:03:09Z","timestamp":1166468589000},"page":"131-137","source":"Crossref","is-referenced-by-count":20,"title":["Uranium-series dating and the origin of modern man"],"prefix":"10.1098","volume":"337","author":[{"given":"Henry P.","family":"Schwarcz","sequence":"first","affiliation":[{"name":"Subdepartment of Quaternary Research, University of Cambridge, Cambridge CB2 3RS, U. K."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"175","reference":[{"key":"p_1","first-page":"543","article-title":"U-series dating of impure carbonates: an isochron technique using total sample dissolution. Geochim. cosmochim","volume":"55","author":"Bischoff J.L .","year":"1990","journal-title":"Acta"},{"key":"p_2","first-page":"493","article-title":"Absolute dating of hominids and Paleolithic artifacts of the cave of La Chaise-de-Vouthon (Charente), France. J. archaeol","volume":"10","author":"Blackwell B.","year":"1983","journal-title":"Sci."},{"key":"p_3","doi-asserted-by":"publisher","DOI":"10.1016\/0033-5894(86)90058-X"},{"key":"p_4","unstructured":"Blackwell B. & Schwarcz H.P. 1992 Archaeometry. In uranium series disequilibrium: application to environment problems in the earth sciences 2nd edn (ed. M. Ivanovich & R. S. Harm on). Oxford University Press. (In the press.)"},{"key":"p_5","doi-asserted-by":"crossref","unstructured":"Cook J. Stringer C.B. C urrant A. Schwarcz H.P. & Win tie A.G. 1982 A review of the chronology of the European middle Pleistocene Record. Yb. phys. 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Geochim. cosmochim","volume":"55","author":"Luo S.","year":"1990","journal-title":"Acta"},{"key":"p_13","unstructured":"Marks A.E. (ed.) 1976 Prehistory and Paleoenvironments of the Central Negev Israel vol. I {The Area) part 1. Dallas: Southern M ethodist University Press."},{"key":"p_14","unstructured":"M cKinney C.R. 1991 The determ ination of the reliability of uranium series dating of enamel dentine and bone. Ph.D. thesis Southern M ethodist University Dallas."},{"key":"p_15","doi-asserted-by":"publisher","DOI":"10.1016\/0883-2927(86)90026-0"},{"key":"p_16","first-page":"653","article-title":"ESR dates for the N eanderthal site of K ebara, Israel. J. archaeol","volume":"16","author":"Schwarcz H .","year":"1989","journal-title":"Sci."},{"key":"p_17","doi-asserted-by":"publisher","DOI":"10.1086\/203959"},{"key":"p_18","doi-asserted-by":"crossref","unstructured":"Schwarcz H.P. Grim R. M ania D. Brunnacker K. & Latham A.G. 1988 New evidence for the age of the Bilzingsleben archaeological site. 30 5 17.","DOI":"10.1111\/j.1475-4754.1988.tb00431.x"},{"key":"p_19","first-page":"327","article-title":"U ranium series age determinations of travertines from the site of Vertesszollos, Hungary. J. archaeol","volume":"11","author":"Schwarcz H.P.","year":"1984","journal-title":"Sci."},{"key":"p_20","doi-asserted-by":"publisher","DOI":"10.1016\/0168-9622(89)90046-8"},{"key":"p_21","first-page":"157","article-title":"U ranium series dating of archaeological sites in Israel","volume":"29","author":"Schwarcz H.P.","year":"1979","journal-title":"Israel J. Earth Sci."},{"key":"p_22","doi-asserted-by":"publisher","DOI":"10.1111\/j.1475-4754.1986.tb00385.x"},{"key":"p_23","unstructured":"Wendorf F. Schild R. Close A. Schwarcz H.P. Miller G.H. Grim R. Bluszcz A . Stokes S. Morawska L. 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