A robust feldspar luminescence dating method for Middle and Late Pleistocene sediments

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Standard

A robust feldspar luminescence dating method for Middle and Late Pleistocene sediments. / Buylaert, Jan-Pieter; Jain, Mayank; Murray, Andrew S.; Thomsen, Kristina Jørkov; Thiel, Christine; Sohbati, Reza.

In: Boreas, Vol. 41, No. 3, 2012, p. 435-451.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Harvard

APA

CBE

MLA

Vancouver

Author

Buylaert, Jan-Pieter; Jain, Mayank; Murray, Andrew S.; Thomsen, Kristina Jørkov; Thiel, Christine; Sohbati, Reza / A robust feldspar luminescence dating method for Middle and Late Pleistocene sediments.

In: Boreas, Vol. 41, No. 3, 2012, p. 435-451.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{d7b3390d6bff4414a4f293279d060482,
title = "A robust feldspar luminescence dating method for Middle and Late Pleistocene sediments",
publisher = "Wiley-Blackwell Munksgaard",
author = "Jan-Pieter Buylaert and Mayank Jain and Murray, {Andrew S.} and Thomsen, {Kristina Jørkov} and Christine Thiel and Reza Sohbati",
year = "2012",
doi = "10.1111/j.1502-3885.2012.00248.x",
volume = "41",
number = "3",
pages = "435--451",
journal = "Boreas",
issn = "0300-9483",

}

RIS

TY - JOUR

T1 - A robust feldspar luminescence dating method for Middle and Late Pleistocene sediments

A1 - Buylaert,Jan-Pieter

A1 - Jain,Mayank

A1 - Murray,Andrew S.

A1 - Thomsen,Kristina Jørkov

A1 - Thiel,Christine

A1 - Sohbati,Reza

AU - Buylaert,Jan-Pieter

AU - Jain,Mayank

AU - Murray,Andrew S.

AU - Thomsen,Kristina Jørkov

AU - Thiel,Christine

AU - Sohbati,Reza

PB - Wiley-Blackwell Munksgaard

PY - 2012

Y1 - 2012

N2 - Luminescence dating is used extensively to provide absolute chronologies for Late Pleistocene sediments. Nowadays, most optical dates are based on quartz optically stimulated luminescence (OSL). However, the application of this signal is usually limited to the last ~100 ka because of saturation of the quartz luminescence signal with dose. In contrast, the feldspar infrared stimulated luminescence (IRSL) dose–response curve grows to much higher doses; this has the potential to extend the datable age range by a factor of 4–5 compared with quartz OSL. However, it has been known for several decades that this IRSL signal is unstable, and this instability often gives rise to significant age underestimation. Here we test against independent age control the recently developed feldspar post-IR IRSL approach to the dating of sediments, which appears to avoid signal instability. A physical model explaining our observations is discussed, and the method is shown to be accurate back to 600 ka. The post-IR IRSL signal is reduced by exposure to daylight more slowly than that from quartz and low-temperature IRSL, preventing its general application to young (e.g. Holocene) sediments. Nevertheless, this new approach is widely applicable (feldspar of appropriate luminescence behaviour is even more ubiquitous than quartz). These characteristics make this a method of great importance for the dating of Middle and Late Pleistocene deposits.

AB - Luminescence dating is used extensively to provide absolute chronologies for Late Pleistocene sediments. Nowadays, most optical dates are based on quartz optically stimulated luminescence (OSL). However, the application of this signal is usually limited to the last ~100 ka because of saturation of the quartz luminescence signal with dose. In contrast, the feldspar infrared stimulated luminescence (IRSL) dose–response curve grows to much higher doses; this has the potential to extend the datable age range by a factor of 4–5 compared with quartz OSL. However, it has been known for several decades that this IRSL signal is unstable, and this instability often gives rise to significant age underestimation. Here we test against independent age control the recently developed feldspar post-IR IRSL approach to the dating of sediments, which appears to avoid signal instability. A physical model explaining our observations is discussed, and the method is shown to be accurate back to 600 ka. The post-IR IRSL signal is reduced by exposure to daylight more slowly than that from quartz and low-temperature IRSL, preventing its general application to young (e.g. Holocene) sediments. Nevertheless, this new approach is widely applicable (feldspar of appropriate luminescence behaviour is even more ubiquitous than quartz). These characteristics make this a method of great importance for the dating of Middle and Late Pleistocene deposits.

U2 - 10.1111/j.1502-3885.2012.00248.x

DO - 10.1111/j.1502-3885.2012.00248.x

JO - Boreas

JF - Boreas

SN - 0300-9483

IS - 3

VL - 41

SP - 435

EP - 451

ER -