Kongsfjorden, Svalbard, sediment geochemistry data, July 2021

In this study, pore-water and solid-phase samples were collected at four stations in the inner to mid Kongsfjorden, Svalbard, and analyzed in a multi-proxy geochemical approach, which included pore-water analyses, solid-phase operational reactive silica extractions, and lithium isotope analyses of pore-water. The goal of this study was to investigate possible forward and reverse weathering alteration in glacially influenced high-latitude systems by focusing on the early diagenetic processes occurring at several stations in Kongsfjorden, Svalbard, extending from the immediate vicinity of a marine-terminating glacier to a mid-fjord, bioturbated station. Our study focused on deciphering the pathways of the weathering reactions, and their relative roles in controlling reactive silica burial rates and benthic cation fluxes. This study is presented in a manuscript entitled "Rapid forward and reverse weathering reactions drive cryptic silica and cation cycling in Arctic fjord sediments" currently undergoing review.