A detailed investigation of pretreatment protocols for high precision radiocarbon measurements of annual tree-rings

T. E. Lange, J. A. Nordby, P. L.O. Murphy, G. W.L. Hodgins, Charlotte L Pearson

Research output: Contribution to journalArticle

Abstract

Much discussion has revolved around proper sample types and pretreatment methods to generate a calibration dataset that would allow for the most accurate representation of an unknown sample's calendar age. Since the development of radiocarbon dating, tree-rings have played a vital role in the creation of global calibration datasets, with these samples being subjected to varying degrees of both physical and chemical pretreatments. With an international move away from multi-ring composite measurements and toward higher resolution annual and/or sub-annual measurement of radiocarbon content, and with the on-set of a major new research project using, primarily the highly resinous North American Bristlecone Pine, we set out to review sample preparation procedures. The question became; which fraction, and therefore how much pretreatment is really necessary in order to extract the most representative and replicable C14 determination in a tree-ring for any given growth year, and could it be both specimen as well as species dependent? For this study, a total of four samples were chosen. These samples consisted of two rings from two different years from Bristlecone Pine and two rings from these same years from Irish Oak. These rings were each treated with a series of progressively more aggressive chemical treatments allowing for the extraction of different fractions from each ring. An analysis of the different pretreatment methods, as well as interspecies variance, is discussed.

Fingerprint

pretreatment
Calibration
rings
dendrochronology
Composite materials
calendars
research projects
preparation
composite materials
high resolution

Keywords

  • Dendrochronology
  • High resolution C dating
  • Radiocarbon dating
  • Tree-ring chronology
  • Wiggle matching

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

Cite this

@article{3cba2a3700714e8fa719332f575d86ce,
title = "A detailed investigation of pretreatment protocols for high precision radiocarbon measurements of annual tree-rings",
abstract = "Much discussion has revolved around proper sample types and pretreatment methods to generate a calibration dataset that would allow for the most accurate representation of an unknown sample's calendar age. Since the development of radiocarbon dating, tree-rings have played a vital role in the creation of global calibration datasets, with these samples being subjected to varying degrees of both physical and chemical pretreatments. With an international move away from multi-ring composite measurements and toward higher resolution annual and/or sub-annual measurement of radiocarbon content, and with the on-set of a major new research project using, primarily the highly resinous North American Bristlecone Pine, we set out to review sample preparation procedures. The question became; which fraction, and therefore how much pretreatment is really necessary in order to extract the most representative and replicable C14 determination in a tree-ring for any given growth year, and could it be both specimen as well as species dependent? For this study, a total of four samples were chosen. These samples consisted of two rings from two different years from Bristlecone Pine and two rings from these same years from Irish Oak. These rings were each treated with a series of progressively more aggressive chemical treatments allowing for the extraction of different fractions from each ring. An analysis of the different pretreatment methods, as well as interspecies variance, is discussed.",
keywords = "Dendrochronology, High resolution C dating, Radiocarbon dating, Tree-ring chronology, Wiggle matching",
author = "Lange, {T. E.} and Nordby, {J. A.} and Murphy, {P. L.O.} and Hodgins, {G. W.L.} and Pearson, {Charlotte L}",
year = "2019",
month = "1",
day = "1",
doi = "10.1016/j.nimb.2019.01.011",
language = "English (US)",
journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",
issn = "0168-583X",
publisher = "Elsevier",

}

TY - JOUR

T1 - A detailed investigation of pretreatment protocols for high precision radiocarbon measurements of annual tree-rings

AU - Lange, T. E.

AU - Nordby, J. A.

AU - Murphy, P. L.O.

AU - Hodgins, G. W.L.

AU - Pearson, Charlotte L

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Much discussion has revolved around proper sample types and pretreatment methods to generate a calibration dataset that would allow for the most accurate representation of an unknown sample's calendar age. Since the development of radiocarbon dating, tree-rings have played a vital role in the creation of global calibration datasets, with these samples being subjected to varying degrees of both physical and chemical pretreatments. With an international move away from multi-ring composite measurements and toward higher resolution annual and/or sub-annual measurement of radiocarbon content, and with the on-set of a major new research project using, primarily the highly resinous North American Bristlecone Pine, we set out to review sample preparation procedures. The question became; which fraction, and therefore how much pretreatment is really necessary in order to extract the most representative and replicable C14 determination in a tree-ring for any given growth year, and could it be both specimen as well as species dependent? For this study, a total of four samples were chosen. These samples consisted of two rings from two different years from Bristlecone Pine and two rings from these same years from Irish Oak. These rings were each treated with a series of progressively more aggressive chemical treatments allowing for the extraction of different fractions from each ring. An analysis of the different pretreatment methods, as well as interspecies variance, is discussed.

AB - Much discussion has revolved around proper sample types and pretreatment methods to generate a calibration dataset that would allow for the most accurate representation of an unknown sample's calendar age. Since the development of radiocarbon dating, tree-rings have played a vital role in the creation of global calibration datasets, with these samples being subjected to varying degrees of both physical and chemical pretreatments. With an international move away from multi-ring composite measurements and toward higher resolution annual and/or sub-annual measurement of radiocarbon content, and with the on-set of a major new research project using, primarily the highly resinous North American Bristlecone Pine, we set out to review sample preparation procedures. The question became; which fraction, and therefore how much pretreatment is really necessary in order to extract the most representative and replicable C14 determination in a tree-ring for any given growth year, and could it be both specimen as well as species dependent? For this study, a total of four samples were chosen. These samples consisted of two rings from two different years from Bristlecone Pine and two rings from these same years from Irish Oak. These rings were each treated with a series of progressively more aggressive chemical treatments allowing for the extraction of different fractions from each ring. An analysis of the different pretreatment methods, as well as interspecies variance, is discussed.

KW - Dendrochronology

KW - High resolution C dating

KW - Radiocarbon dating

KW - Tree-ring chronology

KW - Wiggle matching

UR - http://www.scopus.com/inward/record.url?scp=85060083717&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85060083717&partnerID=8YFLogxK

U2 - 10.1016/j.nimb.2019.01.011

DO - 10.1016/j.nimb.2019.01.011

M3 - Article

AN - SCOPUS:85060083717

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

SN - 0168-583X

ER -