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Effects of redox variability and early diagenesis on marine sedimentary Hg records by J. Frieling; T.A. Mather; C. März; H.C. Jenkyns; R. Hennekam; G.-J. Reichart; C.P. Slomp; N.A.G.M. van Helmond is a Earth and Planetary Sciences article available to read on EtoBox.

What is Effects of redox variability and early diagenesis on marine sedimentary Hg records about?

Volcanism is the dominant natural source of mercury (Hg) to the atmosphere, biosphere, ocean and sediments. In recent years, sedimentary Hg contents have emerged as a tool to reconstruct volcanic activity, and particularly activity of (subaerially emplaced) large igneous provinces in geological deep time. More specifically, Hg has shown potential as a useful proxy to illuminate the previously elusive impact of such large-scale volcanism on marine and terrestrial paleo-environments. While Hg is now widely applied as volcanism tracer, non-volcanic factors controlling sedimentary Hg content are generally not well constrained. Part of this uncertainty stems from our inability to directly observe a natural unperturbed “steady-state” environment as a baseline, as the modern Hg cycle is heavily influenced by anthropogenic activity. Here we focus on the effects of ambient redox conditions in the water column and shallow sediments (early diagenesis), quantify their influence on the geological Hg record and thereby contribute to constraining their potential impact on the use of Hg as a proxy for deep-time volcanic activity. Constraining these factors is of critical importance for the applica

Who reads Effects of redox variability and early diagenesis on marine sedimentary Hg records?

Author

J. Frieling; T.A. Mather; C. März; H.C. Jenkyns; R. Hennekam; G.-J. Reichart; C.P. Slomp; N.A.G.M. van Helmond

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)