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RELOS SIGNED

Reducing empiricism in luminescence geochronology: Understanding the origins of luminescence from individual sand grains

Total Cost €

EC-Contrib. €

Partnership

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Outcomes and
results

RELOS project word cloud

Explore the words cloud of the RELOS project. It provides you a very rough idea of what is the project "RELOS" about.

trapping variety dosimetry literature charge data concerning spread preserve dose recombination budget giving age small reliably history geometry doses climate applicable transport palaeoanthropology mixed equilibrium grains links quality effect considerable de clear archaeology radiation luminescence arbitrary imbalance last evolution sources irradiation reliability environmental scales dispersion ma outcomes nature conceptual sciences fundamental almost models quaternary hypotheses sediments natural grain unsatisfactory sand time numerical relos samples calibration single exposed investigations signals improvements earth measured unexpected rate variations sized ages daylight investigates dates rejection dating completely quantifying read ignored arising sediment tested surface geology particle changing sidestepped size

Project "RELOS" data sheet

The following table provides information about the project.

Coordinator	DANMARKS TEKNISKE UNIVERSITET Organization address address: ANKER ENGELUNDSVEJ 1 BYGNING 101 A city: KGS LYNGBY postcode: 2800 website: www.dtu.dk contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.
Coordinator Country	Denmark [DK]
Total cost	1˙314˙963 €
EC max contribution	1˙314˙963 € (100%)
Programme	1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
Code Call	ERC-2014-STG
Funding Scheme	ERC-STG
Starting year	2015
Duration (year-month-day)	from 2015-09-01 to 2020-08-31

Partnership

Take a look of project's partnership.

#	participants	country	role	EC contrib. [€]
1	DANMARKS TEKNISKE UNIVERSITET DANMARKS TEKNISKE UNIVERSITET Organization address address: ANKER ENGELUNDSVEJ 1 BYGNING 101 A city: KGS LYNGBY postcode: 2800 website: www.dtu.dk contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.	DK (KGS LYNGBY)	coordinator	1˙116˙648.00
2	AARHUS UNIVERSITET AARHUS UNIVERSITET Organization address address: NORDRE RINGGADE 1 city: AARHUS C postcode: 8000 website: www.au.dk contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.	DK (AARHUS C)	participant	198˙315.00

Map

Project objective

Sediments preserve a history of the evolution of the Earth’s surface and its response to a changing climate – a history that can only be read reliably if we know the age of the sediments. Luminescence dating is widely used in quaternary geology and archaeology, and is applicable to almost all sediments from the last 0.5 Ma – it dates the last time the sediment grains were exposed to daylight. RELOS will improve the reliability of luminescence dating by determining the sources of unexpected spread (over-dispersion) in measured doses derived from sand-sized grains. New hypotheses concerning charge imbalance, charge transport and dose calibration of luminescence signals will be tested by: (i) quantifying the effect of grain size and irradiation geometry/quality on grain-to-grain dose dispersion, and particularly the importance of charge particle equilibrium at these scales; (ii) quantifying dispersion arising from grain-to-grain variations in environmental dose rate; (iii) developing measurement procedures giving the same luminescence response per unit dose as in nature; (iv) developing a dispersion budget and new conceptual/numerical models for luminescence production based on (i) to (iii); and (v) testing the results of these investigations using well-defined natural samples. This project investigates fundamental issues of charge (de)trapping and recombination at small scales that have been completely ignored in previous studies, and problems of luminescence response that are sidestepped in the literature, in part by the unsatisfactory approach of arbitrary data rejection. These studies will result in major improvements in our understanding of the small-scale dosimetry of mixed radiation fields and a step change in the reliability of single-grain luminescence ages. The project links these fundamental studies to clear outcomes of considerable potential value to a variety of fields including earth sciences, archaeology and palaeoanthropology.

Publications

List of publications.
year	authors and title	journal	last update
2018	J.-P. Buylaert, G. ÃšjvÃ¡ri, A.S. Murray, R.K. Smedley, M. Kook On the relationship between K concentration, grain size and dose in feldspar published pages: , ISSN: 1350-4487, DOI: 10.1016/j.radmeas.2018.06.003	Radiation Measurements	2019-07-22
2017	Ajit Singh, Kristina J. Thomsen, Rajiv Sinha, Jan-Pieter Buylaert, Andrew Carter, Darren F. Mark, Philippa J. Mason, Alexander L. Densmore, Andrew S. Murray, Mayank Jain, Debajyoti Paul, Sanjeev Gupta Counter-intuitive influence of Himalayan river morphodynamics on Indus Civilisation urban settlements published pages: , ISSN: 2041-1723, DOI: 10.1038/s41467-017-01643-9	Nature Communications 8/1	2019-07-22
2017	A. Timar-Gabor, J.-P. Buylaert, B. Guralnik, O. Trandafir-Antohi, D. Constantin, V. Anechitei-Deacu, M. Jain, A.S. Murray, N. Porat, Q. Hao, A.G. Wintle On the importance of grain size in luminescence dating using quartz published pages: , ISSN: 1350-4487, DOI: 10.1016/j.radmeas.2017.01.009	Radiation Measurements	2019-07-22
2018	A.S. Murray, L.M. Helsted, M. Autzen, M. Jain, J.P. Buylaert Measurement of natural radioactivity: Calibration and performance of a high-resolution gamma spectrometry facility published pages: , ISSN: 1350-4487, DOI: 10.1016/j.radmeas.2018.04.006	Radiation Measurements	2019-07-22
2018	K.J. Thomsen, M. Kook, A.S. Murray, M. Jain Resolving luminescence in spatial and compositional domains published pages: , ISSN: 1350-4487, DOI: 10.1016/j.radmeas.2018.06.002	Radiation Measurements	2019-07-22
2018	T. Stevens, J.-P. Buylaert, C. Thiel, G. ÃšjvÃ¡ri, S. Yi, A. S. Murray, M. Frechen, H. Lu Ice-volume-forced erosion of the Chinese Loess Plateau global Quaternary stratotype site published pages: , ISSN: 2041-1723, DOI: 10.1038/s41467-018-03329-2	Nature Communications 9/1	2019-07-22
2018	Vicki Hansen, Andrew Murray, Kristina Thomsen, Mayank Jain, Martin Autzen, Jan-Pieter Buylaert Towards the origins of over-dispersion in beta source calibration published pages: , ISSN: 1350-4487, DOI: 10.1016/j.radmeas.2018.05.014	Radiation Measurements	2019-07-22
2018	Alastair C. Cunningham, Andrew S. Murray, Simon J. Armitage, Martin Autzen High-precision natural dose rate estimates through beta counting published pages: , ISSN: 1350-4487, DOI: 10.1016/j.radmeas.2018.04.008	Radiation Measurements	2019-07-22

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