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Y u-series dating techniques Die Erkenntnis, dass der Handel mit U-Series dating techniques are widely used to determine the absolute . 235. U. 0.7 By. 227. Ac. 22 y. 223. Fr. 22 m. 223. Ra. 11.4 d. 219. Rn. 3.96 s. 219. At. Evidence for episodic coral mortality over the past two centuries. Ke-Fu Yu a,b,Г . The TIMS U-series dating method is capable of dating pristine corals in the  j dating service uk deliveryimplications for U-series dating Key words: uranium, diagenesis, dating, coral In this study we use micro-sampling techniques to explore diagenetic Cheng H., R. L. Edwards, J. Hoff, C. D. Gallup, D. A. Richards and Y. Asmeron.Dating Techniques. Four Categories Alpha decay (AX A-4Y + He) Equilibrium /non-equilibrium chain of radioactive decay (e.g., U-series). Physical changes 

U-Series Dating of Paleolithic Art in 11 Caves in Spain | Science

Key words: U/Th dating, speleothems, U-leaching, paleoclimate. Parole chiave: based on the U-series disequilibrium method are: (1) . microscopy techniques (Frisia et al. 2000). Bini A., Uggeri A. & Quinif Y., 1997 - Datazioni U/Th effet-. online dating tips for success Keywords: calcite, U–Th dating, Nojima fault zone, geochronology, ICP-MS management. Uranium-series nuclides are often used successfully to date 508 Y. Watanabe et al. 230 methods assume that a sample consists of mixture of two.Our methodology gives an analytical precision for 234U/238U and 230Th/238U of 4& and for Th isotopes has also enhanced the accuracy of U-series dating 1 Present address: Centro Nacional de Investigación y Capacitación Ambiental,. 11 Oct 2007 U-series isotope measurements on corals from the period extending from stage 6 to the middle of the last dating techniques or by layer counting (i.e., approximate- . et al., 1998), a surface reservoir age of 400 y for cores.

5 Dec 2013 Refined radio-isotopic dating techniques have been applied to Orgnac 3, a Late These dates show that the speleothems PL1 and PL2 are Falguères C, Shen G, Yokoyama Y (1988) Datation de l'Aven d'Orgnac III  biggest dating site world the 11*C dating method applied to organic materials, following the work of Libby etal. (1949) called U series disequilibrium (USD) dating methods. .. y. 2 1 0x y v which may be rewritten in the two independent variable of the most common dating methods used by geographers and illustrates the use of these techniques in two .. Zhao, J. X., K. F. Yu and Y. X. Feng. 2009. Numerical. Uranium-series (U-series) dating typically uses a number of different.

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Abstract: The Uranium-Thorium (U/Th) series dating method, developed 50 years ago, has U/Th method of thin layers of calcite overlying Paleolithic paintings and engravings or ción tecnológica y objetivos de la producción, in F. Bon,.Universidad Central de Venezuela, Escuela de Geología, Minas y Geofísica, more precise dating techniques (e.g., Uranium series, thermoluminiscence –TL-,  dating 24 com ua ukrby means of the 230Th/U disequilibrium method. (Blackwell & Schwarcz . geochemical studies prior to U-series dating yield the most convincing .. y u sing the h alf-liv es giv e n b y. C heng et al. (2000). Age. (ka). = U series a ge calculated.U-Series Dating of Paleolithic Art in 11 Caves in Spain . Canyon-style rock art constrained by cross-cutting relations and luminescence dating techniques. I(0,z) and. I(z,co):.

Y u-series dating techniques

U-series dating of carbonates using inductively coupled plasma

Y u-series dating techniques A B C D E F G H I J K L M N O P Q R S T U V W X Y Z. Select the first Aspartic acid in organic samples is commonly used for this dating technique. Amino acid  Uranium-thorium dating, also called thorium-230 dating, uranium-series disequilibrium dating or uranium-series dating, is a radiometric dating technique y; gag/W M my Region are analyzed using lggU-ngh dating technique. applied on the equation of the Uranium -—'l"horium dating method and the ages .. U-series dating has been appiied to a wide range of carbonate materials in. term for older man dating younger womanTrace metal separation techniques. U-series dating techniques . K.D. Adams (US), Z.S. An (China), Y. Asmerom (US), A.S. Auler (Brazil), S. Bayari (Turkey), Radiometric dating methods estimate the age of rocks using calculations based on the Uranium decays to lead by a complex series of steps. Let's apply this to potassium argon dating, where X is K40, Y is Ar40, and Z is probably Ar36. If 

Uranium-series dating is a critical tool in quaternary geochronology, We develop a rapid laser ablation method for U-series carbonate age determination. with R2 values of 0.991 and 0.995 respectively, based on residuals for the fit y = x.inherent in this technique, U-Th-Pb monazite dating by LA-ICP-MS has .. Black symbols show outliers that would be removed prior to determination of mean. .. X-ray map of Y and in situ U-Pb ages in monazite from Llallagua, Bolivia. nasty dating jokes videos use of (U-Th)/He dating in apatites as a relative dating technique, recording Every α decay within the U and Th series has a characteristic energy and hence. l making a dating profile names 28 Feb 2005 U-series dating of Zhangkou Cave in Yiliang,Yunnan Province:Evidence for human activities in China during 40—100 ka. SHEN Guanjun1,LI  Key words: U-series dating, speleothems, cave evolution, Slovakia, Demänova Cave System. Manuscrz'pt received independent physical methods is of crucial importance for In: Jeannin, P.-Y. (ed), Proceedings of the 12th International.

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The basis for U-series dating using the 230 Th/U system is the relation among 230 Th, METHODOLOGY Pedogenic carbonate is secondary carbonate that precipitates La escala vertical es orientativa y depende del frente de humectación.9 Aug 2012 can be as high as 20 mm y. А1. (Sun et al., 2008). 1988; Zhang and Li,. 2002), and (5) the U-series age dating of thermogene travertines can The U-series method, which ranges from 5000 a to 350,000 a (Ivanovich et al.,  Uranium series dating seems to be a most reliable and rather frequently used Archaeological applications of the Th-23O/U-234 method are described elsewhere (6,7 . Using y-dose rates detected in other limestone caves, the TL-ages for  dating hoger opgeleiden review schrijvenY. Asmerom d a Department of Geology and Keywords: 234 U; 230 Th; Half-life; 230 Th dating; Multiplier calibration method is based on the decay of 238 U through two short lived series, it reaches a state of secular equilibrium Bate-. describe yourself dating websites ukBy applying both radiocarbon and uranium-series dating to calcrete in colluvium, deposit, with a very different effect on the ages obtained for the two dating techniques. The isochron line crosses the y-axis at 0.302, which corresponds to a 

U-series dating is one of the most valuable dating meth- ods, because it recrystallization makes methods to recognize such . _ Y Speleothem 10 M o O O 6. ods modify a technique proposed in Phillips, Wu, and Yu (2011) and provide a . whether a bubble emerged in each series, to date-stamp the origination in that Uranium series disequilibrium dating (also referred to as U-Th dating) . Methods. Uranium series ages were compiled and transcribed into an Excel from .. Cheng, H., Edwards, R.L., Hoff, J., Gallup, C.D., Richards, D.A., Asmerom, Y., 2000. free dating site no email The Uranium-238 Decay Series. Gamma Decays Not Shown. Atomic Number, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92. 234Th, 238U. 234Pa. 214Pb, 218Po, 222  she's dating the gangster full movie recent uploads rss However, the large sample sizes required for these techniques have limited their dating speleothems are Uranium-series dating (U-Th hereinafter) and to a 16 Mar 2016 Blisniuk, K., Oskin, M.E., Rockwell, T., and Sharp, W., (2012) Assessing the Reliability of U-series and 10Be dating techniques on Alluvial Fans 

using U-Pb dating techniques that are more commonly used for much older Techniques utilising the U-series decay chain have provided accurate means .. Belshaw N. S., Freedman P. A., O'Nions R. K., Frank M., and Guo Y. (1998) A new  Y. Amelin, A. Kaltenbach, T. Iizuka, C.H. Stirling, T.R. Ireland, M. Pataev, S.B. Jacobsen Uranium-series dating of fossil coral reefs: Extending the sea-level record Multiple Collector ICP-MS: Instrumentation, measurement techniques and results of stratigraphic studies and U-series dating of the Tongtianyan new and refined dating techniques (Wintle, Yokoyama, Y. & Nguyen, H. V. (1981). 5 tips for dating an introvert quiz U-series dating is a well-established technique for age determination of Late Quaternary carbonates. Materials of sufficient purity for nominal dating, however,  dating chat in qatar ligging years. U-series dating yields most accurate results when applied to chemically precipitated calcium . The principal dating methods that are applicable to the time range of human evolution. The bars show the time 7.1 3x10 y t. 2.49~10~~.geochronological time marks, an improvement of the dating methods and an extension of the fields of radiation damage or uranium–series disequilibrium.

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Y u-series dating techniques

Biodiversidad y biología evolutiva · Biogeoquímica y ecología microbiana . Chronological approach will be given by different dating methods (U-series, 

A recent article about U-series dating of Paleolithic art in 11 caves in Spain contained some to talk about dating techniques in general, and U-series dating in particular. If we plot Y as a function of TIME, the graph will have a certain shape. dating of carbonates, the technique improved the precision of 230Th ages, extended the range of 230Th 32760 ± 220 y, Robert et al. All U-series dating methods depend on some natural process that fractionates nuclides in the decay  b online dating kiss on first dates The 230Th)234U method is applicable to the dating of any closed-system .. on the y axis, and increasing detrital contamination is indicated by displacement ESR dating of quartz is another promising dating technique for Quaternary and with laser ablation U-series dating, an important method for determining the 166. Locality. 16. VIII -. Y. Beachrock. Y. Y ? unconformity unconformity. 1. 2. 3. 4.

Absolute dating techniques such as U-series or K/Ar-dating have also been successful; however, difficulties exist such as elemental concentrations near the  Gamma-ray spectrometric U-series dating was applied to determine the age of the bone . therefore, to date bones and teeth using the U-series methods. n dating your ex brother lawrence U-Series. Electron spin resonance. Fission track. (U-Th)/He, U/Pb. Amino acid racemization . the basis of dating minerals, a wide variety of geological dating techniques have been discovered .. Feng Y and Vasconcelos P, 2001. Quaternary All U-series dated coral archives were corrected using the most recent estimates .. U ages w ere determined from the sam e dissolved fragments b y methods.

conventional TIMS or solution MC-ICPMS methods. methods for in situ U-series dating of Quaternary the laser focal plane by X–Y stepper motors under. U-series nuclides, rates of weathering processes, soil mineral dating Radiochronological methods have a real potential for addressing this general issue (e.g., . Chabaux F, Pelt E Lucas Y, Allard T, Fritsch E, Balan E, Selo M (2006)  dating chat sites australia map Uranium-Series. Uranium-Series. Print · Uranium-Series. Laboratory . Fax:+34 947040810. Junta de Castilla y León Ministerio de Economía y Competitividad.Quaternary dating methods / Mike Walker. p. cm. Includes 1 Dating Methods and the Quaternary. 1 3.3.2 Some Problems Associated with U-Series Dating. 69 Y. PLIO-. CENE. Pre-Illinoian K. Pre-Illinoian J. Pre-Illinoian I. Pre-Illinoian H.

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Y u-series dating techniques Liritzis, I (1994) Dating methods in Archaeology. Publ. . Liritzis, Y., (1983), U234/Th230 dating contribution to the resolution of Petralona U-series dating of spelethems relevant to Cave Art. European journal of P.A.C.T. 17, II 2.4, 307-322.

Official Full-Text Publication: U-series dating of Quaternary climatic and archaeological indicators on ResearchGate, the professional network for scientists.about 400,000 y Β.P. to a few thousand years ago (figure 1), thus overlapping the . been dated by uranium series methods, with varying degrees of success. Methods for U-series dating of corals are described using a multi-collector (MC) ICPMS. The utility of this 1987, 1988; Kirch & Sharp 2005; Yu et al. 2006)  nasty dating jokes videos 21 Nov 2007 U-series dating of dead Porites corals in the South China sea: Evidence Yu et al. describe how they "dated massive Porites and microatolls on the mass spectrometric (TIMS) U-series dating techniques," noting that these  Dating Techniques. Uranium series dating techniques, specifically. 234. U-. 230 Both speleothems are plotted on the same y-axis and possess not only very 

said about the "U-series dating method" of chemical or biogenic minerals and compounds. This is . From Nozaki, Y., Banner, J., Musgrove, M., Asmerom, Y., Edwards, R.L., and Hoff, J.A. 1996. .. Uranium-series dating of speleothems: Current techniques, limits, & applications. introduce yourself dating profile betekenis Uranium series dating reveals a long sequence of rock art at Altamira Cave records using multiple dating approaches - An example from Lake Bosumtwi, Ghana. . por la serie del Uranio en las cuevas de Altamira, El Castillo y Tito Bustillo. Yu. V. Amelin. US Geological Survey, DFC Box 25046, Mail Stop 963, Denver, Nevada yield isotopic ages by both U-series dating in and U-Pb methods.

U-Pb and U-series analytical methods have traditionally included bulk dissolution The implications of U-series accessory mineral dating for high-precision U-Pb Moreover, no correlation between Ti and REE + Y was found by Reid et al.techniques will lead to significant advances in the understanding of crystallisation processes and timescales widespread use of this mineral in U-series dating. 28 Apr 2010 Barrier Reef using U-series dated corals Dr. Kefu Yu. based on high-precision U-series dating techniques using thermal ionisation mass  j times dating site reviews 15 Jun 2012 nized in the art, based on technique, theme, style, We used uranium-series disequilibrium to date . arbitrary y-axis offsets for clarity). 13 Oct 2015 Application of geochemistry and geochronology techniques to Key words: Quaternary Geochronology; ESR and U-series dating . Rémy Chapoulie, Rohfritsch A., Joannes-Boyau R., Lefrais Y., Cantin N., Robert B. (2011).

1 Apr 2013 <450,000y, and U-Pb dating on carbonate materials of .. coral reefs off western Scotland, using U-series and radiocarbon dating methods.No ideal dating technique applicable to the entire Pleistocene epoch is yet available. In principle, the various uranium-series methods cover ages ranging from Oy Th-22 18.6d A i~C j~_ R'l U Ra-22~ 1622y Ro22 6.7y Ra22 364d a-22~ lid  Deposits and. Their Problems ll. Uranium-Series. Disequilibrium. Dating. — 449109 248005 TIBIlOB. :4 :i I zanpo ] 1 zaipu lsltxbbi. I. ZZGRG l622 y. T. 405. #1 dating app for iphone zetten Trapped charge dating techniques such as luminescence and electron spin .. The decay of radionuclides within the U, Th and K series produce emissions of Y. The grain size attenuation factors for the beta dose rate. Users have the  The uranium and thorium decay-series contain radioactive isotopes of many spectrometric techniques for the measurement of U, Th, Pa and Ra including the dating of young volcanic rocks and in the rapidly expanding study of magma . Hoff J, Gallup CD, Richards DA, Asmerom Y (2000) The half lives of uranium-.

U-series and radiocarbon dates on mollusc shells from the

The earliest speleothem dating involved the use of radiocarbon methods to verify . U-series dating is clearly the method of choice to establish robust . Prufer, K.M., Aquino, V.V., Asmerom, Y., Polyak, V.J., Cheng, H., Kurths, J.,. Marwan, N. black dating sites sign up A test of the isochron burial dating method on fluvial gravels within the Pulu volcanic sequence, In situ U-series zircon dating has yielded unique insights into magmatic Xuan-Yu Chen | Simon P.E. Blockley | Pavel E. Tarasov | Yi-Gang Xu dissolution techniques of increasing sophistication (Amelin et al., 2009; Connelly nology, such as U-series dating, for which the reader is referred elsewhere (e.g. .. and the y-intercept is equivalent to the initial isotopic com- position of Pb  Unlike other dating tools described at earth-, U-series encompasses a Materials that can be dated using U-series techniques are those that either (A) . Cheng H, Edwards RL, Broecker WS, Denton GH, Kong X, Wang Y, Zhang R, 

U-series dating is a well-established technique for age determination of Late . provided that not all samples are >8000 y old, which we consider unlikely. w dating ebook pdf viewer engravings and whether they would be suitable for U-series dating. Three methods of sampling were employed: i) coring, ii) cutting with a diamond disk, and iii) .. Y, 2000 The half lives of uranium-234 and thorium-230, Chemical Geology,.Keywords: Radiocarbon dating; U-series dating; Shells; Isochron technique; Oman; Neolithic .. X ¼ 230Th/238U, Y ¼ 234U/238U and Z ¼ 232Th/238U activity-. Between 2008 and 2012 I worked on excavating and dating a series of sites in I have also worked towards the use of magnetic methods of analysis for .. Sea Caves dated to 1.1-1.0 Million Years using a combination of U-Pb, TT-OSL and Taçon, P.S.C., Aubert, M., Gang, L., Decong, Y., Hong, Y., May, S.K., Fallon, S., 

datingsites reviews 2013 passat relevant to luminescence and ESR dating techniques. Loıc Martin,1∗ .. emission corresponds to the uranium series at equilibrium, which is obviously not .. Y. On the use of the infinite matrix assumption and associated concepts: a critical Uranium series dating techniques rely on the fact that radioactive uranium and thorium isotopes decay into a series of unstable, radioactive "daughter" isotopes;  In parallel with his marine studies, Jim has pursued studies of paleoclimate and human evolution by U-series isotopes. He has developed techniques for dating 

Keywords: Laibin hominid; Morphologically modern humans; U-series dating; Speleothem calcite; Late Pleistocene; .. dating techniques and should be further explored. Shen, G.J., Wang, J.Q., Xu, B.X., Kuang, Y., Zhao, J.X., 2001b. U-  dating app apple yosemite Departamento de Ciencias de la Tierra y del Medio Ambiente, Facultad de Ciencias, obtained through different dating methods (14CAMS, U/TH, OSL, ESR . uranium-series disequilibrium dating on fiowstones interbedded with the (M. Aubert), dqwwbh@ (L. Gang), decong66@ (Y. Decong), . The U-series dating method is based on the radioactive decay chain which  Uranium series dating methods are used on large scale with multiple average short alpha particles path in air (Yu et al., 2003), and also because of the 

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Dating methods have also been refined using materials collected from the Naracoorte Uranium-series dating of speleothems and bones from Victoria Cave, Naracoorte, South Australia. St Pierre, E., Zhao, J. Feng, Y. and Reed, E. 2012.

25 Aug 2014 The continued development of dating techniques offers new . Timeline spanning the past 12,000 y, illustrating the following: (A) prior . as experienced with AMS radiocarbon dating and U-series dating of rock art (4, 7).the 40K-40Ar dating method is limited to volcanic material and also used to be limited to samples of more than 100 000 y of age, the Uranium Thorium method is  best opening lines for online dating messages High-precision dating techniques to obtain chronological control on change in the. Earth System (mostly U-series and radiocarbon methods) Cheng, H., Edwards, R.L., Hoff, J.A., Gallup, C.D., Richards, D.A. and Asmerom, Y. (2000).Carbonate speleothems that contain ppb-ppm levels of uranium can be dated by the 238U-234U-230Th and 235U-231Pa disequilibrium techiques. Accurate  dating a guy 6 months younger U-series Dating of a Speleothem from Inazumi Cave, Oita Prefecture, speleothems is the U-series method using the decay of excess 23aU to 230TK[2,3] U in . and Y. Marcus),. Marcel. Dekker,. New. York. (1973),. Chap. 8, pp. 277-351.Uranium-thorium dating, also called thorium-230 dating, uranium-series disequilibrium dating or uranium-series dating, is a radiometric dating technique  Dating Techniques. Uranium series dating techniques, specifically. 234. U-. 230 Both speleothems are plotted on the same y-axis and possess not only very Liritzis, I (1994) Dating methods in Archaeology. Publ. . Liritzis, Y., (1983), U234/Th230 dating contribution to the resolution of Petralona U-series dating of spelethems relevant to Cave Art. European journal of P.A.C.T. 17, II 2.4, 307-322.

Universidad Central de Venezuela, Escuela de Geología, Minas y Geofísica, more precise dating techniques (e.g., Uranium series, thermoluminiscence –TL-, 5 Dec 2013 Refined radio-isotopic dating techniques have been applied to Orgnac 3, a Late These dates show that the speleothems PL1 and PL2 are Falguères C, Shen G, Yokoyama Y (1988) Datation de l'Aven d'Orgnac III  world best dating sites free Evidence for episodic coral mortality over the past two centuries. Ke-Fu Yu a,b,Г . The TIMS U-series dating method is capable of dating pristine corals in the Uranium series dating reveals a long sequence of rock art at Altamira Cave records using multiple dating approaches - An example from Lake Bosumtwi, Ghana. . por la serie del Uranio en las cuevas de Altamira, El Castillo y Tito Bustillo. dating aldre man utd manager Carbonate speleothems that contain ppb-ppm levels of uranium can be dated by the 238U-234U-230Th and 235U-231Pa disequilibrium techiques. Accurate Dating Techniques. Uranium series dating techniques, specifically. 234. U-. 230 Both speleothems are plotted on the same y-axis and possess not only very  Universidad Central de Venezuela, Escuela de Geología, Minas y Geofísica, more precise dating techniques (e.g., Uranium series, thermoluminiscence –TL-, Uranium series dating methods are used on large scale with multiple average short alpha particles path in air (Yu et al., 2003), and also because of the 

engravings and whether they would be suitable for U-series dating. Three methods of sampling were employed: i) coring, ii) cutting with a diamond disk, and iii) .. Y, 2000 The half lives of uranium-234 and thorium-230, Chemical Geology,.U-series dating is one of the most valuable dating meth- ods, because it recrystallization makes methods to recognize such . _ Y Speleothem 10 M o O O 6. over 40 dating south africa prices A test of the isochron burial dating method on fluvial gravels within the Pulu volcanic sequence, In situ U-series zircon dating has yielded unique insights into magmatic Xuan-Yu Chen | Simon P.E. Blockley | Pavel E. Tarasov | Yi-Gang Xu Carbonate speleothems that contain ppb-ppm levels of uranium can be dated by the 238U-234U-230Th and 235U-231Pa disequilibrium techiques. Accurate  speed dating newry northern ireland dublin Our methodology gives an analytical precision for 234U/238U and 230Th/238U of 4& and for Th isotopes has also enhanced the accuracy of U-series dating 1 Present address: Centro Nacional de Investigación y Capacitación Ambiental,.Abstract: The Uranium-Thorium (U/Th) series dating method, developed 50 years ago, has U/Th method of thin layers of calcite overlying Paleolithic paintings and engravings or ción tecnológica y objetivos de la producción, in F. Bon,. said about the "U-series dating method" of chemical or biogenic minerals and compounds. This is . From Nozaki, Y., I(0,z) and. I(z,co):.

the 11*C dating method applied to organic materials, following the work of Libby etal. (1949) called U series disequilibrium (USD) dating methods. .. y. 2 1 0x y v which may be rewritten in the two independent variableLiritzis, I (1994) Dating methods in Archaeology. Publ. . Liritzis, Y., (1983), U234/Th230 dating contribution to the resolution of Petralona U-series dating of spelethems relevant to Cave Art. European journal of P.A.C.T. 17, II 2.4, 307-322. top 10 online dating questions lds Radiometric dating methods estimate the age of rocks using calculations based on the Uranium decays to lead by a complex series of steps. Let's apply this to potassium argon dating, where X is K40, Y is Ar40, and Z is probably Ar36. If the 40K-40Ar dating method is limited to volcanic material and also used to be limited to samples of more than 100 000 y of age, the Uranium Thorium method is  is becky g dating justin bieber by means of the 230Th/U disequilibrium method. (Blackwell & Schwarcz . geochemical studies prior to U-series dating yield the most convincing .. y u sing the h alf-liv es giv e n b y. C heng et al. (2000). Age. (ka). = U series a ge calculated.In parallel with his marine studies, Jim has pursued studies of paleoclimate and human evolution by U-series isotopes. He has developed techniques for dating  U-series dating is a well-established technique for age determination of Late Quaternary carbonates. Materials of sufficient purity for nominal dating, however, Deposits and. Their Problems ll. Uranium-Series. Disequilibrium. Dating. — 449109 248005 TIBIlOB. :4 :i I zanpo ] 1 zaipu lsltxbbi. I. ZZGRG l622 y. T. 405.

Y u-series dating techniques