Holocene sea-level reconstruction in the Young Sound region, Northeast Greenland

TY - JOUR

T1 - Holocene sea-level reconstruction in the Young Sound region, Northeast Greenland

AU - Pedersen, Jørn Bjarke Torp

AU - Kroon, Aart

AU - Jakobsen, Bjarne Holm

PY - 2011/2

Y1 - 2011/2

N2 - A relative sea-level curve over the Holocene is constructed for the Young Sound region in northeastern Greenland. The reconstruction is derived by dating the heights of raised beach ridges in coastal plains using optically stimulated luminiscence (OSL), and by dating palaeoterrestrial surface levels now buried beneath the intertidal frame using the 14C technique. The relative sea-level curve reveals a rapid fall of at least 10mm a-1 from ca. 9500 to 7500 a ago, which slowed to 2mm a-1 until it reached the present sea level ca. 3000 a ago. This part of the curve is based on the raised beach ridge data. Thereafter, relative sea level continued to fall, to reach a minimum level at about 0.5m below the present sea level ca. 2300 a ago. Since then, relative sea level has experienced a slow rise of about 0.2mm a-1. This part of the curve uses the data from the palaeoterrestrial surfaces. The study supplements other estimates of Holocene relative sea-level changes and supports the observations of a decreasing trend in the timing of the cross point and in minimum relative sea level from South to North Greenland.

AB - A relative sea-level curve over the Holocene is constructed for the Young Sound region in northeastern Greenland. The reconstruction is derived by dating the heights of raised beach ridges in coastal plains using optically stimulated luminiscence (OSL), and by dating palaeoterrestrial surface levels now buried beneath the intertidal frame using the 14C technique. The relative sea-level curve reveals a rapid fall of at least 10mm a-1 from ca. 9500 to 7500 a ago, which slowed to 2mm a-1 until it reached the present sea level ca. 3000 a ago. This part of the curve is based on the raised beach ridge data. Thereafter, relative sea level continued to fall, to reach a minimum level at about 0.5m below the present sea level ca. 2300 a ago. Since then, relative sea level has experienced a slow rise of about 0.2mm a-1. This part of the curve uses the data from the palaeoterrestrial surfaces. The study supplements other estimates of Holocene relative sea-level changes and supports the observations of a decreasing trend in the timing of the cross point and in minimum relative sea level from South to North Greenland.

M3 - Journal article

SN - 0267-8179

VL - 26

SP - 219

EP - 226

JO - Journal of Quaternary Science

JF - Journal of Quaternary Science

IS - 2

ER -