The silicon isotope composition of biogenic silica (δ 30 Si BSi) in the ocean is a function of
the δ 30 Si of the available dissolved Si (DSi; H 2 SiO 4), the degree of utilisation of the …

Silicon (Si) released as H 4 SiO 4 by weathering of Si-containing solid phases is partly
recycled through vegetation before its land-to-rivers transfer. By accumulating in terrestrial …

When rock is converted to weathering products, the involved processes can be fingerprinted
using the stable isotope ratios of metals (for example Li, Mg, Ca, Fe, Sr) and metalloids (B …

The Si isotopic composition of Earth's mantle is thought to be homogeneous (δ30Si=−
0.29±0.08‰, 2s. d.) and not greatly affected by partial melting and recycling. Previous …

Knowledge of the weathering processes controlling continental transfer of dissolved silicon
(DSi) to the ocean is fundamental to the estimate of the long-term atmospheric CO2-budget …

Thirty-five mafic and ultramafic rocks have been analysed for their silicon isotopic
composition to very high precision with the aim of providing a robust average value for the …

Silicon (Si) is the second most abundant element in the Earth's crust and is an important
nutrient in the ocean. The global Si cycle plays a critical role in regulating primary …

Silicon isotopes have considerable potential as proxy for (near-) surface processes and
environmental conditions. However, unambiguous interpretations of isotope signatures in …

Dissolved silicon isotope compositions have been analysed for the first time in pore waters
(δ 30 Si PW) of three short sediment cores from the Peruvian margin upwelling region with …

The upper continental crust (UCC) is the major source of silicon (Si) to the oceans and yet its
isotopic composition is not well constrained. In an effort to investigate the degree of …