Application des méthodes de datation par luminescence optique à l'évolution des environnements désertiques :

Bouab, Nawal

doi:10.1522/13721974

Cited by 8 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…2) in northern Fuerteventura but used different dating methods (amino acid racemization, 14 C, U-Th, OSL and IRSL), whereas Bouab (2001) and Meco et al (2008) present OSL ages from the Costilla profile (see their Fig. 8) that are comparable with the data presented in this study.…”

Section: Accepted Manuscriptsupporting

confidence: 83%

A contribution to the understanding of late Pleistocene dune sand-paleosol-sequences in Fuerteventura (Canary Islands)

et al. 2015

View full text Add to dashboard Cite

Section: Accepted Manuscriptsupporting

confidence: 83%

A contribution to the understanding of late Pleistocene dune sand-paleosol-sequences in Fuerteventura (Canary Islands)

et al. 2015

View full text Add to dashboard Cite

“…The first sample (TH0, grain size: 125 − 250 µm) is a modern analogue sample of aeolian origin from the Sebkha Tah in Morocco (cf. Bouab, 2005). It is the same sample used by Frouin et al (2017) to calibrate the 90 Sr/ 90 Y source of the very same reader used for our measurements here.…”

Section: Samplesmentioning

confidence: 99%

Spatially Resolved Infrared Radiofluorescence: Single-grain K-feldspar Dating using CCD Imaging

Mittelstraß¹,

Kreutzer²

2021

Preprint

View full text Add to dashboard Cite

Abstract. The success of luminescence dating as a chronological tool in Quaternary science builds upon innovative methodological approaches, providing new insights into past landscapes. Infrared radiofluorescence (IR-RF) on K-feldspar is such an innovative method already introduced two decades ago. IR-RF promises considerable extended temporal range and a simple measurement protocol, with more dating applications published recently. To date, all applications use multi-grain measurements. Herein, we take the next step by enabling IR-RF measurements on a single grain level. Our contribution introduces spatially resolved infrared radiofluorescence (SR IR-RF) on K-feldspars and intends to make SR IR-RF broadly accessible as a geochronological tool. In the first part of the manuscript, we detail equipment, CCD camera settings and software needed to perform and analyse SR IR-RF measurements. We use a newly developed ImageJ macro to process the image data, identify IR-RF emitting grains and obtain single-grain IR-RF signal curves. For subsequent analysis, we apply the statistical programming environment R and the package Luminescence. In the second part of the manuscript, we test SR IR-RF on two K-feldspar samples. One sample was irradiated artificially; the other sample received a natural dose. The artificially irradiated sample renders results, indistinguishable from conventional IR-RF measurements with the photomultiplier tube. The natural sample seems to overestimate the expected dose by ca 50 % on average. However, it also shows a lower dose component resulting in ages consistent with the same sample's quartz fraction. Our experiments also revealed an unstable signal background due to our cameras' degenerated cooling system. Besides this technical issue specific to the system we used, SR IR-RF is ready for application. Our contribution provides guidance and software tools for methodological and applied luminescence(-dating) studies on single grain feldspars using radiofluorescence.

show abstract

“…L'une des particularités de la région est l'existence de plusieurs sebkhas dont la sebkha de Tah qui est la plus importante et fait 30 Km de long et 11 Km de large. Elle est également le point le plus bas au Royaume (-55m d'altitude) (Bouab, 2003).…”

Section: Les Sebkhas Et Les Hamadasunclassified

Potentialités de l’écotourisme et géotourisme aux provinces de Tantan, Tarfaya et Layoune (Sahara Atlantique marocain)

Amimi

Ouhnine

Jiang

et al. 2017

ESJ

View full text Add to dashboard Cite

Tantan, Tarfaya and Laayoune provinces, which belong to the Moroccan Atlantic Sahara, are characterized by exceptional geo and ecotourism potentials. In this context, singing dunes, sand rivers and the presence of several wadis mouth’s in such desert environment could constitute a locomotive for the development of green and geological tourism. Indeed, the studied region presents Eco and Geo-tourism potentials, combining ecological sites classified by the RAMSAR convention as the Khnifis lagoon, the wadis mouth’s including the longest river in Morocco (Oued Draa) with its new national park. Rivers of sand with multitudes sand colours, singing dunes, virgin beaches and sebkhas with the lowest point in Morocco, the sebkha of Tah with an altitude of -55 m adsl.

show abstract

Application des méthodes de datation par luminescence optique à l'évolution des environnements désertiques :

Cited by 8 publications

References 27 publications

A contribution to the understanding of late Pleistocene dune sand-paleosol-sequences in Fuerteventura (Canary Islands)

A contribution to the understanding of late Pleistocene dune sand-paleosol-sequences in Fuerteventura (Canary Islands)

Spatially Resolved Infrared Radiofluorescence: Single-grain K-feldspar Dating using CCD Imaging

Potentialités de l’écotourisme et géotourisme aux provinces de Tantan, Tarfaya et Layoune (Sahara Atlantique marocain)

Contact Info

Product

Resources

About