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dc.contributor.author
Guo, Yulong
dc.contributor.author
Yang, Shouye
dc.contributor.author
Deng, Kai
dc.date.accessioned
2021-11-12T13:41:22Z
dc.date.available
2021-11-12T03:54:53Z
dc.date.available
2021-11-12T13:41:22Z
dc.date.issued
2021-12-30
dc.identifier.issn
0009-2541
dc.identifier.issn
1872-6836
dc.identifier.other
10.1016/j.chemgeo.2021.120607
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/514847
dc.description.abstract
River sediment can be used to quantitatively investigate the silicate weathering intensity only if the weathering signal preservation and propagation are well understood, and especially the effects of hydrodynamic sorting and provenance lithology can be disentangled properly. Rivers entering the East China Sea have different climatic and geological settings and sediment source-to-sink transport patterns, which allow us to quantify the link between the chemical composition of river sediments and controlling factors of silicate weathering, hydrodynamic sorting, source rock natures and sedimentary recycling. We examine the geochemical evolution of sediments from these fluvial networks in weathering diagrams of A-CN-K [Al2O3-(CaO⁎ + Na2O)-K2O, Nesbitt and Young, 1984] and MFW [Mafic-Felsic-Weathering, Ohta and Arai, 2007]. The seeming “weathering trends” in these weathering diagrams are greatly influenced by mineral sorting given that the river sediment transport, deposition and resuspension are mainly subject to hydrodynamic conditions. The MFW diagram can better distinguish the influence of felsic and mafic source rocks, on condition that the weathering contribution from recycled sedimentary and metamorphic rocks in the catchment is minor. Nevertheless, both the A-CN-K and MFW diagrams are insensitive to sedimentary recycling induced quartz addition. Here, we propose a diagram of A-CNK-Si to disentangle the major factors controlling the river sediment geochemistry like chemical weathering, hydrodynamic sorting and provenance inheritance. This novel approach can decode the silicate weathering signals preserved in sedimentary records after removing the mineral sorting and quartz dilution effects, which will allow us to better reconstruct the geochemical evolution of Earth's surface.
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.subject
River sediments
en_US
dc.subject
Chemical weathering
en_US
dc.subject
Hydrodynamic sorting
en_US
dc.subject
Source rock composition
en_US
dc.subject
Sedimentary recycling
en_US
dc.title
Disentangle the hydrodynamic sorting and lithology effects on sediment weathering signals
en_US
dc.type
Journal Article
dc.date.published
2021-10-29
ethz.journal.title
Chemical Geology
ethz.journal.volume
586
en_US
ethz.journal.abbreviated
Chem. geol.
ethz.pages.start
120607
en_US
ethz.size
11 p.
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Amsterdam
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02725 - Institut für Geochemie und Petrologie / Institute of Geochemistry and Petrology::03956 - Vance, Derek / Vance, Derek
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02725 - Institut für Geochemie und Petrologie / Institute of Geochemistry and Petrology::03956 - Vance, Derek / Vance, Derek
ethz.date.deposited
2021-11-12T03:54:56Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-11-12T13:41:31Z
ethz.rosetta.lastUpdated
2022-03-29T15:59:50Z
ethz.rosetta.versionExported
true
ethz.COinS
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