Importance of the Radiocarbon Standard Deviation in Determining Relative Sea Levels and Glacial Chronology from East Baffin Island
Deals with the problem of error in estimating relative sea levels and glacial chronology in a small area where radiocarbon dates provide some chronological order, but where the precision of radiometric technique does not allow a clear-cut chronology to be developed on that basis alone. An equation i...
Published in: | ARCTIC |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
The Arctic Institute of North America
1969
|
Subjects: | |
Online Access: | https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66240 |
id |
ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/66240 |
---|---|
record_format |
openpolar |
spelling |
ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/66240 2023-05-15T14:19:19+02:00 Importance of the Radiocarbon Standard Deviation in Determining Relative Sea Levels and Glacial Chronology from East Baffin Island Andrews, J.T. 1969-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66240 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66240/50153 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66240 ARCTIC; Vol. 22 No. 1 (1969): March: 1–84; 13-24 1923-1245 0004-0843 Birds Winter ecology info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1969 ftunivcalgaryojs 2022-03-22T21:23:07Z Deals with the problem of error in estimating relative sea levels and glacial chronology in a small area where radiocarbon dates provide some chronological order, but where the precision of radiometric technique does not allow a clear-cut chronology to be developed on that basis alone. An equation is presented to predict postglacial uplift which is defined as the algebraic sum of the equation of the marine limit and the appropriate eustatic sea level correction. Using the head of Ekalugad Fiord as an example, author constructs postglacial uplift and emergence curves on the basis of the equation, and an equidistant diagram showing possible variation in relative sea level. Results indicate that glaciers lingered in the east and central Baffin Island valleys from 5700 to at least 4350 BP. Data for this study were gathered by Geographical Branch field parties during the Baffin Island Project, 1961-67. Importance de la déviation standard du radiocarbone dans la détermination des niveaux marins relatifs et dans les chronologies glaciaires: un exemple pour l'est de l'île de Baffin. L'auteur donne des exemples de l'importance de la déviation standard du radiocarbone dans l'évaluation des niveaux marins relatifs, de même qu'une chronologie glaciaire locale. Il décrit les techniques d'évaluation des données. Dans la première étape de l'émergence postglaciaire, des incertitudes sur l'âge radiocarbone d'un échantillon, qu'on présume dater la limite marine, peuvent conduire à une erreur de vingt pour cent dans l'altitude estimée des niveaux marins inférieurs. Aussi récemment que 4.300 années-radiocarbone avant aujourd'hui, des langues glaciaires alimentées par la calotte intérieure de l'île de Baffin atteignaient le niveau de la mer, tout au moins dans la région étudiée ici. Article in Journal/Newspaper Arctic Baffin Island Baffin University of Calgary Journal Hosting Baffin Island Dater ENVELOPE(-64.825,-64.825,-67.145,-67.145) Ekalugad Fiord ENVELOPE(-68.614,-68.614,68.768,68.768) ARCTIC 22 1 |
institution |
Open Polar |
collection |
University of Calgary Journal Hosting |
op_collection_id |
ftunivcalgaryojs |
language |
English |
topic |
Birds Winter ecology |
spellingShingle |
Birds Winter ecology Andrews, J.T. Importance of the Radiocarbon Standard Deviation in Determining Relative Sea Levels and Glacial Chronology from East Baffin Island |
topic_facet |
Birds Winter ecology |
description |
Deals with the problem of error in estimating relative sea levels and glacial chronology in a small area where radiocarbon dates provide some chronological order, but where the precision of radiometric technique does not allow a clear-cut chronology to be developed on that basis alone. An equation is presented to predict postglacial uplift which is defined as the algebraic sum of the equation of the marine limit and the appropriate eustatic sea level correction. Using the head of Ekalugad Fiord as an example, author constructs postglacial uplift and emergence curves on the basis of the equation, and an equidistant diagram showing possible variation in relative sea level. Results indicate that glaciers lingered in the east and central Baffin Island valleys from 5700 to at least 4350 BP. Data for this study were gathered by Geographical Branch field parties during the Baffin Island Project, 1961-67. Importance de la déviation standard du radiocarbone dans la détermination des niveaux marins relatifs et dans les chronologies glaciaires: un exemple pour l'est de l'île de Baffin. L'auteur donne des exemples de l'importance de la déviation standard du radiocarbone dans l'évaluation des niveaux marins relatifs, de même qu'une chronologie glaciaire locale. Il décrit les techniques d'évaluation des données. Dans la première étape de l'émergence postglaciaire, des incertitudes sur l'âge radiocarbone d'un échantillon, qu'on présume dater la limite marine, peuvent conduire à une erreur de vingt pour cent dans l'altitude estimée des niveaux marins inférieurs. Aussi récemment que 4.300 années-radiocarbone avant aujourd'hui, des langues glaciaires alimentées par la calotte intérieure de l'île de Baffin atteignaient le niveau de la mer, tout au moins dans la région étudiée ici. |
format |
Article in Journal/Newspaper |
author |
Andrews, J.T. |
author_facet |
Andrews, J.T. |
author_sort |
Andrews, J.T. |
title |
Importance of the Radiocarbon Standard Deviation in Determining Relative Sea Levels and Glacial Chronology from East Baffin Island |
title_short |
Importance of the Radiocarbon Standard Deviation in Determining Relative Sea Levels and Glacial Chronology from East Baffin Island |
title_full |
Importance of the Radiocarbon Standard Deviation in Determining Relative Sea Levels and Glacial Chronology from East Baffin Island |
title_fullStr |
Importance of the Radiocarbon Standard Deviation in Determining Relative Sea Levels and Glacial Chronology from East Baffin Island |
title_full_unstemmed |
Importance of the Radiocarbon Standard Deviation in Determining Relative Sea Levels and Glacial Chronology from East Baffin Island |
title_sort |
importance of the radiocarbon standard deviation in determining relative sea levels and glacial chronology from east baffin island |
publisher |
The Arctic Institute of North America |
publishDate |
1969 |
url |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66240 |
long_lat |
ENVELOPE(-64.825,-64.825,-67.145,-67.145) ENVELOPE(-68.614,-68.614,68.768,68.768) |
geographic |
Baffin Island Dater Ekalugad Fiord |
geographic_facet |
Baffin Island Dater Ekalugad Fiord |
genre |
Arctic Baffin Island Baffin |
genre_facet |
Arctic Baffin Island Baffin |
op_source |
ARCTIC; Vol. 22 No. 1 (1969): March: 1–84; 13-24 1923-1245 0004-0843 |
op_relation |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66240/50153 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66240 |
container_title |
ARCTIC |
container_volume |
22 |
container_issue |
1 |
_version_ |
1766291034769195008 |