DECADALLY RESOLVED LATEGLACIAL RADIOCARBON EVIDENCE FROM NEW ZEALAND KAURI

作者：Hogg Alan; Southon John; Turney Chris; Palmer Jonathan; Ramsey Christopher Bronk; Fenwick Pavla; Boswijk Gretel; Buntgen Ulf; Friedrich Michael; Helle Gerhard; Hughen Konrad; Jones Richard; Kromer Bernd; Noronha Alexandra; Reinig Frederick; Reynard Linda; Staff Richard; Wacker Lukas

来源：Radiocarbon, 2016, 58(4): 709-733.

DOI：10.1017/RDC.2016.86

• Younger Dryas
• radiocarbon calibration
• IntCal13
• SHCal13
• C-14 dating

The Last Glacial-Interglacial Transition (LGIT; 15,000-11,000 cal BP) was characterized by complex spatiotemporal patterns of climate change, with numerous studies requiring accurate chronological control to decipher leads from lags in global paleoclimatic, paleoenvironmental, and archaeological records. However, close scrutiny of the few available tree-ring chronologies and radiocarbon-dated sequences composing the IntCal13 C-14 calibration curve indicates significant weakness in C-14 calibration across key periods of the LGIT. Here, we present a decadally resolved atmospheric C-14 record derived from New Zealand kauri spanning the Lateglacial from similar to 13,100-11,365 cal BP. Two floating kauri C-14 time series, curve-matched to IntCal13, serve as a C-14 backbone through the Younger Dryas. The floating Northern Hemisphere (NH) C-14 data sets derived from the YD-B and Central European Lateglacial Master tree-ring series are matched against the new kauri data, forming a robust NH C-14 time series to similar to 14,200 cal BP. Our results show that IntCal13 is questionable from similar to 12,200-11,900 cal BP and the similar to 10,400 BP C-14 plateau is approximately 5 decades too short. The new kauri record and repositioned NH pine C-14 series offer a refinement of the international 14C calibration curves IntCal13 and SHCal13, providing increased confidence in the correlation of global paleorecords.

• 出版日期2016-12