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Tree-Ring Dating of the Reshui-1 Tomb in Dulan County, Qinghai Province, North-West China.

Li M, Shao X, Yin ZY, Xu X - PLoS ONE (2015)

Bottom Line: Moreover, the ring-width variations of the samples are consistent with the existing chronologies from the region.The presence of late-wood of AD 715 in the samples indicated that the Reshui-1 Tomb was completed in late AD 715 or early 716, which means that the Reshui-1 Tomb was finished in the Tubo age.This date provides direct evidence for archaeologists to determine the owner's ethnicity and identify of the Reshui-1 Tomb.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.

ABSTRACT
Tuyuhun and Tubo were two important states that thrived in north-western China during AD 311-900 in parallel with the Han Chinese dynasties of Sui and Tang periods. The Reshui Tomb Cluster located in Dulan County of the north-eastern Tibetan Plateau is an important cultural relic of the Tuyuhun-Tubo age. The official excavations of the Reshui tombs were regarded as top events in archaeology in the 1980s and 1990s in China. The Reshui-1 Tomb is the largest one among the tombs in the area. Since its excavation, there have been debates on whether the owner of the tomb belonged to the Tuyuhun or Tubo ethnicity. Therefore, accurately dating the Reshui-1 Tomb has a critical place in studying the Tubo and Tuyuhun histories. We collected 7 discs and 11 increment cores of Qilian juniper (Juniperus przewalskii Kom.) from the exposed and fallen beams of the roof of the Reshui-1Tomb. The lengths of the 16 tree-ring records are between 69 and 152 years. Based on a previously developed master dating chronology using Qilian juniper samples from the eastern Qaidam Basin, the calendar dates of the 16 specimens were determined by the COFECHA program and visual dating procedure. The average inter-series correlation among the dated sample series is 0.696, indicating good quality of cross-dating. The year of the outermost rings is AD 715 for the 7 discs and 4 out of the 9 increment cores. Moreover, the ring-width variations of the samples are consistent with the existing chronologies from the region. The presence of late-wood of AD 715 in the samples indicated that the Reshui-1 Tomb was completed in late AD 715 or early 716, which means that the Reshui-1 Tomb was finished in the Tubo age. This date provides direct evidence for archaeologists to determine the owner's ethnicity and identify of the Reshui-1 Tomb.

No MeSH data available.


Time-series plots of the sixteen dated sample series and three reference chronologies; the vertical dotted lines mark years with narrow rings.RS01-06, 08, 09, 11–18: The 16 dated series from archaeological wood sampled; QC: The Qaidam Chronology constructed by Shao et al. [46]; ZDC: The Dulan chronology constructed by Zhang et al. [36]; SDC: The Dulan chronology constructed by Sheppard et al. [40]. The black dots show the locations of the missing rings.
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pone.0133438.g006: Time-series plots of the sixteen dated sample series and three reference chronologies; the vertical dotted lines mark years with narrow rings.RS01-06, 08, 09, 11–18: The 16 dated series from archaeological wood sampled; QC: The Qaidam Chronology constructed by Shao et al. [46]; ZDC: The Dulan chronology constructed by Zhang et al. [36]; SDC: The Dulan chronology constructed by Sheppard et al. [40]. The black dots show the locations of the missing rings.

Mentions: The quality of cross-dating can also be illustrated by Fig 6 that contains the time-series plots of the 16 dated sample series. It can be seen that the variation patterns of the 16 ring-width series exhibit an excellent match among themselves, especially for the years with narrow rings. Also plotted in Fig 6 is the Qaidam Chronology (QC) together with two additional chronologies adjusted based on QC [46] from Dulan, one constructed by Zhang et al. [36] (as ZDC) and the other by Sheppard et al. [40] (as SDC). Again, the match between the 16 series to these reference chronologies was also very good (Fig 6). Fig 7 shows the correlation coefficients between the sample series and the three reference chronologies. Sample series RS16 has the highest correlations with the three chronologies (r = 0.745 to QC, 0.611 to ZDC, and 0.734 to SDC), while the lowest correlations were found for sample series RS13 (r = 0.447 to QC, 0.366 to ZDC and 0.382 to SDC). The mean correlation coefficients to the reference chronologies are 0.595 to QC, 0.485 to ZDC, and 0.544 to SDC, respectively.


Tree-Ring Dating of the Reshui-1 Tomb in Dulan County, Qinghai Province, North-West China.

Li M, Shao X, Yin ZY, Xu X - PLoS ONE (2015)

Time-series plots of the sixteen dated sample series and three reference chronologies; the vertical dotted lines mark years with narrow rings.RS01-06, 08, 09, 11–18: The 16 dated series from archaeological wood sampled; QC: The Qaidam Chronology constructed by Shao et al. [46]; ZDC: The Dulan chronology constructed by Zhang et al. [36]; SDC: The Dulan chronology constructed by Sheppard et al. [40]. The black dots show the locations of the missing rings.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4526363&req=5

pone.0133438.g006: Time-series plots of the sixteen dated sample series and three reference chronologies; the vertical dotted lines mark years with narrow rings.RS01-06, 08, 09, 11–18: The 16 dated series from archaeological wood sampled; QC: The Qaidam Chronology constructed by Shao et al. [46]; ZDC: The Dulan chronology constructed by Zhang et al. [36]; SDC: The Dulan chronology constructed by Sheppard et al. [40]. The black dots show the locations of the missing rings.
Mentions: The quality of cross-dating can also be illustrated by Fig 6 that contains the time-series plots of the 16 dated sample series. It can be seen that the variation patterns of the 16 ring-width series exhibit an excellent match among themselves, especially for the years with narrow rings. Also plotted in Fig 6 is the Qaidam Chronology (QC) together with two additional chronologies adjusted based on QC [46] from Dulan, one constructed by Zhang et al. [36] (as ZDC) and the other by Sheppard et al. [40] (as SDC). Again, the match between the 16 series to these reference chronologies was also very good (Fig 6). Fig 7 shows the correlation coefficients between the sample series and the three reference chronologies. Sample series RS16 has the highest correlations with the three chronologies (r = 0.745 to QC, 0.611 to ZDC, and 0.734 to SDC), while the lowest correlations were found for sample series RS13 (r = 0.447 to QC, 0.366 to ZDC and 0.382 to SDC). The mean correlation coefficients to the reference chronologies are 0.595 to QC, 0.485 to ZDC, and 0.544 to SDC, respectively.

Bottom Line: Moreover, the ring-width variations of the samples are consistent with the existing chronologies from the region.The presence of late-wood of AD 715 in the samples indicated that the Reshui-1 Tomb was completed in late AD 715 or early 716, which means that the Reshui-1 Tomb was finished in the Tubo age.This date provides direct evidence for archaeologists to determine the owner's ethnicity and identify of the Reshui-1 Tomb.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.

ABSTRACT
Tuyuhun and Tubo were two important states that thrived in north-western China during AD 311-900 in parallel with the Han Chinese dynasties of Sui and Tang periods. The Reshui Tomb Cluster located in Dulan County of the north-eastern Tibetan Plateau is an important cultural relic of the Tuyuhun-Tubo age. The official excavations of the Reshui tombs were regarded as top events in archaeology in the 1980s and 1990s in China. The Reshui-1 Tomb is the largest one among the tombs in the area. Since its excavation, there have been debates on whether the owner of the tomb belonged to the Tuyuhun or Tubo ethnicity. Therefore, accurately dating the Reshui-1 Tomb has a critical place in studying the Tubo and Tuyuhun histories. We collected 7 discs and 11 increment cores of Qilian juniper (Juniperus przewalskii Kom.) from the exposed and fallen beams of the roof of the Reshui-1Tomb. The lengths of the 16 tree-ring records are between 69 and 152 years. Based on a previously developed master dating chronology using Qilian juniper samples from the eastern Qaidam Basin, the calendar dates of the 16 specimens were determined by the COFECHA program and visual dating procedure. The average inter-series correlation among the dated sample series is 0.696, indicating good quality of cross-dating. The year of the outermost rings is AD 715 for the 7 discs and 4 out of the 9 increment cores. Moreover, the ring-width variations of the samples are consistent with the existing chronologies from the region. The presence of late-wood of AD 715 in the samples indicated that the Reshui-1 Tomb was completed in late AD 715 or early 716, which means that the Reshui-1 Tomb was finished in the Tubo age. This date provides direct evidence for archaeologists to determine the owner's ethnicity and identify of the Reshui-1 Tomb.

No MeSH data available.