<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Optical bleaching of quartz may be incomplete due to decreased daylight intensity and narrower wavelength spectrum in water column, leading to age overestimation in young fluvial sediments. This hypothesis was tested on a low energy slack water deposits from Kaveri Basin in south India using the SAR protocol. Various tests suggest successful application of SAR on quartz from the study area despite low sensitivity and few numbers of bright grains. Partial bleaching can be ruled out if using SAR on small aliquots. The results suggest a uniform residual luminescence and a common sedimentary condition in this area. Due to partial bleaching, the lowest values of palaeodoses should be considered in preference to the average values.</p></abstract>

Optical bleaching of quartz may be incomplete due to decreased daylight intensity and narrower wavelength spectrum in water column, leading to age overestimation in young fluvial sediments. This hypothesis was tested on a low energy slack water deposits from Kaveri Basin in south India using the SAR protocol. Various tests suggest successful application of SAR on quartz from the study area despite low sensitivity and few numbers of bright grains. Partial bleaching can be ruled out if using SAR on small aliquots. The results suggest a uniform residual luminescence and a common sedimentary condition in this area. Due to partial bleaching, the lowest values of palaeodoses should be considered in preference to the average values.

Residual Luminescence in Quartz from Slack Water Deposits in Kaveri Basin, South India: A Single Aliquot Approach

Department of Geosciences, National Taiwan University, Taipei-10617, Taiwan

Department of Geography, University of Pune, Pune-411 007, India

Department of Geology, Anna University, Chennai-600 025, India

Geochronometria

Optical bleaching of quartz may be incomplete due to decreased daylight intensity and narrower wavelength spectrum in water column, leading to age...

Residual Luminescence in Quartz from Slack Water Deposits in Kaveri Basin, South India: A Single Aliquot Approach

Published Online: Nov 05, 2009

Page range: 1 - 8

DOI: https://doi.org/10.2478/v10003-009-0009-1

Keywords
Optical dating, OSL dating, slack water deposit, Kaveri flood plain

This content is open access.

Residual Luminescence in Quartz from Slack Water Deposits in Kaveri Basin, South India: A Single Aliquot Approach

Published Online: Nov 05, 2009

Page range: 1 - 8

DOI: https://doi.org/10.2478/v10003-009-0009-1

KeywordsOptical dating, OSL dating, slack water deposit, Kaveri flood plain

This content is open access.

Keywords
Optical dating, OSL dating, slack water deposit, Kaveri flood plain