Dear Jiarui Liu and Co-Workers,

thanks you for submitting your responses to the referees. As reading through the conversations I recognized three major point that need to be particularly addressed:

- Some crucial information on core handling and analytical procedures are missing and/or need clarification. Please carefully consider the points raised by the referees and add the missing information.

- Interpretations of data related to porewater geochemistry are difficult, because porewater from your main core was extracted from frozen samples after long storage and hence you decided to compare with the geochemical data of a parallel core taken. Please make sure you highlight this shortcoming and consequently please limit your interpretations to the level possible under these circumstances.

- You started some very interesting discussions with both reviewers about potential mineral processes related to your data. I suggest you incorporate some of these possible interpretations into your discussion were it appears reasonable (but remember to highlight limitations).

I invite you to submit your manuscript, which will be returned to at least one referee for a second round of review.

With kind regards
Tina Treude

Dear Jiarui and co-workers,
I am pleased to inform you that your manuscript is acceptable for publication in Biogeosciences.
With kind regards
Tina Treude