Advances and limitations in establishing a contiguous high-resolution atmospheric radiocarbon record derived from subfossil kauri tree rings for the interval 60–27 cal kyr BP

Hogg, AG; Lorrey, AM; Turney, CSM; Palmer, JG; Boswijk, G; Fenwick, P

Advances and limitations in establishing a contiguous high-resolution atmospheric radiocarbon record derived from subfossil kauri tree rings for the interval 60–27 cal kyr BP

Hogg, AG Lorrey, AM Turney, CSM Palmer, JG Boswijk, G Fenwick, P

Permalink

Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Quaternary Geochronology, 2021, pp. 101251
Issue Date:: 2021-01-01

Closed Access

	Filename	Description	Size
	MIS3 update_02Nov21_AGH_DL.docx	Submitted version	1.64 MB	Unknown	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Hogg, AG
dc.contributor.author	Lorrey, AM
dc.contributor.author	Turney, CSM
dc.contributor.author	Palmer, JG
dc.contributor.author	Boswijk, G
dc.contributor.author	Fenwick, P
dc.date.accessioned	2022-01-18T01:45:56Z
dc.date.available	2022-01-18T01:45:56Z
dc.date.issued	2021-01-01
dc.identifier.citation	Quaternary Geochronology, 2021, pp. 101251
dc.identifier.issn	1871-1014
dc.identifier.uri	http://hdl.handle.net/10453/153256
dc.description.abstract	Radiocarbon dating is the most widely applied and reliable dating technique for providing chronological control during Marine Isotope Stage 3 (MIS3; ∼60–27 cal kyr BP). Past variations in the atmospheric concentration of radiocarbon mean a calibration curve is required. IntCal20 and SHCal20 calibration curves covering MIS3 are presently largely based on non-atmospheric records which, in combination with larger radiocarbon (14C) dating uncertainties, results in significant smoothing and reduced resolution in calibration curve structure. Floating tree ring radiocarbon chronologies that are wiggle-matched to other palaeo records (particularly to Hulu Cave speleothems) have the potential to provide detailed structure to the MIS3 portion of extant calibration curves. New Zealand subfossil kauri (Agathis australis) trees are long-lived and are useful for constructing temporally-floating MIS3 atmospheric radiocarbon datasets. This paper presents extant and emerging data from several important Northland subfossil kauri locations (Omaha, Basin Road, Waipu, Finlayson Farms, Mangawhai). We show the span of seven floating MIS3 kauri sequences (individual trees and chronologies) from which sequential radiocarbon series covering a total of 7556 years is now in development (representing 23% of the period 60–27 cal kyr BP). We also report radiocarbon dates for an additional 34 ancient kauri from MIS3 that can provide additional coverage. After these floating subfossil wood sequences have been produced, close to 40% of MIS3 (12,420 years) will be covered by contiguous subfossil kauri radiocarbon measurements. Based on our findings, we discuss the prospects and limitations for obtaining a highly resolved and precise atmospheric radiocarbon calibration curve comprehensively covering MIS3 using subfossil kauri.
dc.language	en
dc.publisher	Elsevier BV
dc.relation	http://purl.org/au-research/grants/arc/DP170104665
dc.relation.ispartof	Quaternary Geochronology
dc.relation.isbasedon	10.1016/j.quageo.2021.101251
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0402 Geochemistry, 0403 Geology, 0406 Physical Geography and Environmental Geoscience
dc.subject.classification	Paleontology
dc.title	Advances and limitations in establishing a contiguous high-resolution atmospheric radiocarbon record derived from subfossil kauri tree rings for the interval 60–27 cal kyr BP
dc.type	Journal Article
utslib.for	0402 Geochemistry
utslib.for	0403 Geology
utslib.for	0406 Physical Geography and Environmental Geoscience
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/DVC (Research)
utslib.copyright.status	closed_access	*
dc.date.updated	2022-01-18T01:45:55Z
pubs.publication-status	Published

Abstract:

Radiocarbon dating is the most widely applied and reliable dating technique for providing chronological control during Marine Isotope Stage 3 (MIS3; ∼60–27 cal kyr BP). Past variations in the atmospheric concentration of radiocarbon mean a calibration curve is required. IntCal20 and SHCal20 calibration curves covering MIS3 are presently largely based on non-atmospheric records which, in combination with larger radiocarbon (14C) dating uncertainties, results in significant smoothing and reduced resolution in calibration curve structure. Floating tree ring radiocarbon chronologies that are wiggle-matched to other palaeo records (particularly to Hulu Cave speleothems) have the potential to provide detailed structure to the MIS3 portion of extant calibration curves. New Zealand subfossil kauri (Agathis australis) trees are long-lived and are useful for constructing temporally-floating MIS3 atmospheric radiocarbon datasets. This paper presents extant and emerging data from several important Northland subfossil kauri locations (Omaha, Basin Road, Waipu, Finlayson Farms, Mangawhai). We show the span of seven floating MIS3 kauri sequences (individual trees and chronologies) from which sequential radiocarbon series covering a total of 7556 years is now in development (representing 23% of the period 60–27 cal kyr BP). We also report radiocarbon dates for an additional 34 ancient kauri from MIS3 that can provide additional coverage. After these floating subfossil wood sequences have been produced, close to 40% of MIS3 (12,420 years) will be covered by contiguous subfossil kauri radiocarbon measurements. Based on our findings, we discuss the prospects and limitations for obtaining a highly resolved and precise atmospheric radiocarbon calibration curve comprehensively covering MIS3 using subfossil kauri.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/153256