Opening book details…
Can I read A silicon isotopic perspective on the contribution of diagenesis to the sedimentary silicon budget in the Southern Ocean on EtoBox?
A silicon isotopic perspective on the contribution of diagenesis to the sedimentary silicon budget in the Southern Ocean by Ivia Closset; Mark A. Brzezinski; Damien Cardinal; Arnaud Dapoigny; Janice L. Jones; Rebecca S. Robinson is a Earth and Planetary Sciences article available to read on EtoBox.
What is A silicon isotopic perspective on the contribution of diagenesis to the sedimentary silicon budget in the Southern Ocean about?
Diatoms are known to fractionate silicon isotopes during the formation of their frustules causing the silicon isotopic composition of biogenic silica to track the degree of silicic acid consumption in surface waters. Despite a growing body of work that uses this proxy to reconstruct past changes in silicic acid utilization, the understanding of the benthic silicon cycle, particularly the identification and quantification of the processes that potentially alter the silicon isotopic composition of biogenic silica during early diagenesis is still lacking. We investigated these processes by comparing the silicon isotopic composition of pore water silicic acid, biogenic silica and, for the first time, lithogenic silica from five sediment cores collected in the deep basin of the Southern Ocean representing a diversity of sedimentation regimes. Silicic acid concentrations and the isotopic composition of Southern Ocean pore waters were the result of a dynamic balance between the dissolution of biogenic silica, reactive lithogenic silica phases and Si re-precipitation with the relative importance of each processes differing significantly between regions. The results are consistent with the
Who reads A silicon isotopic perspective on the contribution of diagenesis to the sedimentary silicon budget in the Southern Ocean?
It is typically read by researchers, students, and practitioners in Earth and Planetary Sciences.
- Author
- Ivia Closset; Mark A. Brzezinski; Damien Cardinal; Arnaud Dapoigny; Janice L. Jones; Rebecca S. Robinson
- Publisher
- Elsevier BV
- Published
- 2022
- Language
- EN
- Field
- Earth and Planetary Sciences (Physical Sciences)