dc.contributor.author
Krone, Laura V.
dc.contributor.author
Wittmann, Hella
dc.contributor.author
von Blanckenburg, Friedhelm
dc.date.accessioned
2024-08-05T07:27:55Z
dc.date.available
2024-08-05T07:27:55Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/44393
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-44105
dc.description.abstract
Along a climate gradient in the Chilean coastal mountains, we investigated denudation rates using the meteoric cosmogenic nuclide 10Be and its ratio to stable 9Be, and chemical depletion fractions (CDFs) in bulk soil samples. We find that the fraction of 9Be released from bedrock is a sensitive indicator of weathering, similar to CDF. Meteoric 10Be decreases exponentially with depth, reflecting the reactive nature of this tracer. We also measured denudation rates by the well-understood in situ cosmogenic 10Be system on quartz. Assuming that both systems record the same denudation rate we calculated the depositional flux of meteoric 10Be for each study site. The flux agrees to that derived from atmospheric models in the mediterranean and humid areas. In contrast, in the arid and semi-arid areas, the calculated flux agrees with a precipitation-derived flux, indicating delivery of 10Be to be affected by small-scale climatic variations not reflected by current atmospheric models.
en
dc.format.extent
10 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
Meteoric 10Be
en
dc.subject
Weathering Intensity
en
dc.subject
Depositional Flux
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::550 Geowissenschaften
dc.title
Precipitation Control on Weathering Intensity and Depositional Flux of Meteoric 10Be Revealed From Soil Profiles Along a Climate Gradient (Chile)
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
e2024GL108825
dcterms.bibliographicCitation.doi
10.1029/2024GL108825
dcterms.bibliographicCitation.journaltitle
Geophysical Research Letters
dcterms.bibliographicCitation.number
15
dcterms.bibliographicCitation.volume
51
dcterms.bibliographicCitation.url
https://doi.org/10.1029/2024GL108825
refubium.affiliation
Geowissenschaften
refubium.affiliation.other
Institut für Geologische Wissenschaften / Fachrichtung Tektonik und Sedimentäre Systeme
refubium.funding
DEAL Wiley
refubium.note.author
Die Publikation wurde aus Open Access Publikationsgeldern der Freien Universität Berlin gefördert.
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
1944-8007