Million-year lag times in a post-orogenic sediment conveyor

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dc.contributor.authorFülöp, RHen_AU
dc.contributor.authorCodilean, ATen_AU
dc.contributor.authorWilcken, KMen_AU
dc.contributor.authorCohen, TJen_AU
dc.contributor.authorFink, Den_AU
dc.contributor.authorSmith, AMen_AU
dc.contributor.authorYang, Ben_AU
dc.contributor.authorLevchenko, VAen_AU
dc.contributor.authorWacker, Len_AU
dc.contributor.authorMarx, SKen_AU
dc.contributor.authorStomsoe, Nen_AU
dc.contributor.authorFujioka, Ten_AU
dc.contributor.authorDunai, TJen_AU
dc.date.accessioned2020-08-31T23:24:09Zen_AU
dc.date.available2020-08-31T23:24:09Zen_AU
dc.date.issued2020-06-19en_AU
dc.date.statistics2020-08-28en_AU
dc.description.abstractUnderstanding how sediment transport and storage will delay, attenuate, and even erase the erosional signal of tectonic and climatic forcings has bearing on our ability to read and interpret the geologic record effectively. Here, we estimate sediment transit times in Australia’s largest river system, the Murray-Darling basin, by measuring downstream changes in cosmogenic 26Al/10Be/14C ratios in modern river sediment. Results show that the sediments have experienced multiple episodes of burial and reexposure, with cumulative lag times exceeding 1 Ma in the downstream reaches of the Murray and Darling rivers. Combined with low sediment supply rates and old sediment blanketing the landscape, we posit that sediment recycling in the Murray-Darling is an important and ongoing process that will substantially delay and alter signals of external environmental forcing transmitted from the sediment’s hinterland. Copyright © 2020 The Authorsen_AU
dc.identifier.articlenumbereaaz8845en_AU
dc.identifier.citationFülöp, R.-H., Codilean, A. T., Wilcken, K. M., Cohen, T. J., Fink, D., Smith, A. M.,Yang, B., Levchenko, V. A., Wacker, L., Marx, S. K., Stomsoe, N., Fukioka, T., & Dunai, T. J. (2020). Million-year lag times in a post-orogenic sediment conveyor. Science Advances, 6(25), eaaz8845. doi:10.1126/sciadv.aaz8845 %J Science Advancesen_AU
dc.identifier.govdoc9969en_AU
dc.identifier.isbn2375-2548en_AU
dc.identifier.issn2375-2548en_AU
dc.identifier.issue25en_AU
dc.identifier.journaltitleScience Advancesen_AU
dc.identifier.urihttps://doi.org/10.1126/sciadv.aaz8845en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9735en_AU
dc.identifier.volume6en_AU
dc.language.isoenen_AU
dc.publisherAmerican Association for the Advancement of Scienceen_AU
dc.subjectSedimentsen_AU
dc.subjectGeologic depositsen_AU
dc.subjectTectonicsen_AU
dc.subjectErosionen_AU
dc.subjectAustraliaen_AU
dc.subjectRiversen_AU
dc.titleMillion-year lag times in a post-orogenic sediment conveyoren_AU
dc.typeJournal Articleen_AU
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