Mercury isotope evidence for protracted North Atlantic magmatism during the Paleocene-Eocene Thermal Maximum

Simin Jin, David B. Kemp, Runsheng Yin, Ruiyang Sun, Jun Shen, David W. Jolley, Manuel Vieira, Chunju Huang

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The Paleocene-Eocene Thermal Maximum (PETM, ∼56 Ma) was a major hyperthermal event that has been linked to CO2 release from the North Atlantic Igneous Province (NAIP). Anomalously high sedimentary mercury (Hg) concentrations, a proxy for volcanism, have been recorded across the PETM, but the precise mechanistic links between NAIP emplacement and the event are unclear. Here, we present Hg abundance and Hg-isotope data across a thick, deep-marine sedimentary record deposited in close proximity to active NAIP volcanism. A marked transient shift of Δ199Hg towards higher values occurs within the PETM onset, indicating a causal link to extrusive volcanic activity from the NAIP. Increasing Δ199Hg values through the body of the PETM indicate a protracted interval of magmatism. Towards the end of, and after, the PETM the data suggest an overall waning influence of direct volcanogenic Hg outgassing. Our data can explain both the triggering mechanism and long duration of the PETM.

Original languageEnglish
Article number117926
Number of pages9
JournalEarth And Planetary Science Letters
Volume602
DOIs
Publication statusPublished - 15 Jan 2023

Keywords

  • basaltic volcanism
  • large igneous province
  • mercury
  • mercury isotopes
  • North Atlantic Igneous Province
  • PETM

Fingerprint

Dive into the research topics of 'Mercury isotope evidence for protracted North Atlantic magmatism during the Paleocene-Eocene Thermal Maximum'. Together they form a unique fingerprint.

Cite this