The preservation of silicon isotope ratios in cherts and recrystallized sponge spicules

Key Points

• The aim is to explore how silicon isotope ratios are preserved in cherts and sponge spicules during silica diagenesis.
• Analyzed silicon isotope data from cherts and sponge spicules.
• Developed a silica diagenesis model code for simulation.
• Compared variations in silicon isotope ratios.
• Silicon isotope ratios remain relatively stable in cherts during diagenesis.
• Recrystallized sponge spicules show significant changes in isotope ratios.
• The silica diagenesis model successfully predicts isotope behavior.