dc.contributor.author
Sellwood, E. L.
dc.contributor.author
Guralnik, B.
dc.contributor.author
Kook, M.
dc.contributor.author
Prasad, A. K.
dc.contributor.author
Sohbati, R.
dc.contributor.author
Hippe, Kristina
dc.contributor.author
Wallinga, J.
dc.contributor.author
Jain, M.
dc.date.accessioned
2019-07-15T07:26:45Z
dc.date.available
2019-07-15T07:26:45Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/25054
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-2809
dc.description.abstract
Optically stimulated luminescence (OSL) dating of sediment, based on the accumulation of trapped charge in natural crystals since their last exposure to daylight, has revolutionised our understanding of the late Quaternary period. Recently, a complementary technique called luminescence rock surface dating (RSD), which uses differential spatial eviction of trapped charges in rocks exposed to daylight, has been developed to derive exposure and burial ages, and hard-rock erosion rates. In its current form, the RSD technique suffers from labour intensive sample preparation, uncertainties in the depth and dose rate estimates, and poor resolution of the luminescence-depth profile. Here, we develop a novel, 2D luminescence imaging technique for RSD of large rock slabs (3 × 5 cm) to overcome these challenges. We utilize the recently discovered infrared photoluminescence (IRPL) signal for direct, non-destructive imaging of the luminescence-depth profile in a sub-aerially exposed granitic rock, with an unprecedented spatial resolution of ~140 µm. We further establish a correlation between luminescence and geochemistry using micro X-ray fluorescence (µXRF) spectroscopy. Our study promises a substantial advancement in luminescence imaging and paves the path towards novel applications using 2D dating, micro-dosimetry in mixed composition samples, and portable instrumentation for in-situ luminescence measurements.
en
dc.format.extent
12 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
optically stimulated luminescence
en
dc.subject
rock surface dating
en
dc.subject
luminescence imaging technique
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::551 Geologie, Hydrologie, Meteorologie
dc.title
Optical bleaching front in bedrock revealed by spatially-resolved infrared photoluminescence
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
2611
dcterms.bibliographicCitation.doi
10.1038/s41598-019-38815-0
dcterms.bibliographicCitation.journaltitle
Scientific Reports
dcterms.bibliographicCitation.volume
9
dcterms.bibliographicCitation.url
https://doi.org/10.1038/s41598-019-38815-0
refubium.affiliation
Geowissenschaften
refubium.affiliation.other
Institut für Geologische Wissenschaften
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
2045-2322
refubium.resourceType.provider
WoS-Alert