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| Donnadieu, Y; Lecroart, P; Anschutz, P; Bertrand, P. |
| We have constructed a nonsteady state numerical model of organic carbon, aluminum, and uranium burial to examine the dynamic response of sediments to variations on thousand years scale. The three components are defined by distinct behaviors in the sedimentary system. The aluminum is a conservative component, the organic carbon is a nonconservative component degraded in superficial sediment, and the uranium is a component affected by redox conditions. By introducing a simultaneous variation of incoming fluxes of C-org and Al, geochemical profiles of Al, Corg, and U clearly show separate distributions after burial. Each component record the synchronous variation of the incoming fluxes, but the position in the sedimentary pile of the recording differs from a... |
| Tipo: Text |
Palavras-chave: Time lag; Sedimentary system; High-resolution record; Modeling; Bioturbation. |
| Ano: 2002 |
URL: https://archimer.ifremer.fr/doc/00223/33390/31872.pdf |
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