Sulfate-driven anaerobic oxidation of methane inferred from trace-element chemistry and nickel isotopes of pyrite

C Chen, J Wang, TJ Algeo, JM Zhu, Z Wang… - … et Cosmochimica Acta, 2023 - Elsevier
In marine sediments, formation of pyrite (FeS 2) is promoted by both organoclastic sulfate
reduction (OSR) and sulfate-driven anaerobic oxidation of methane (SD-AOM), and these …

Postdepositional behavior of molybdenum in deep sediments and implications for paleoredox reconstruction

J Nan, MY Tsang, J Li, M Köster… - Geophysical …, 2023 - Wiley Online Library
Molybdenum (Mo) is a trace element sensitive to oceanic redox conditions. The fidelity of
sedimentary Mo as a paleoredox proxy of coeval seawater depends on the extent of Mo …

Isotopically light Mo in sediments of methane seepage controlled by the benthic Fe–Mn redox shuttle process

X Miao, J Wei, J Li, X Liu, D Wang, J Li… - Global and Planetary …, 2024 - Elsevier
Methane seepage has been extensively observed in various continental margin settings. It
has profound effects on the marine redox environment and the molybdenum (Mo) cycles in …

Porewater geochemistry indicates methane seepage in the Okinawa Trough and its implications for the carbon cycle of the subtropical West Pacific

X Miao, X Liu, Q Li, A Li, F Cai, F Kong… - Palaeogeography …, 2022 - Elsevier
Abstract The Kuroshio Current, originating from the West Pacific Warm Pool and flowing
through the Okinawa Trough, connects the equator and the subtropical West Pacific and …

[HTML][HTML] Tracking Depositional Architecture and Diagenetic Evolution in the Jurassic Carbonates, Trans Indus Ranges, NW Himalayas

M Jamil, I Ullah, HU Rahim, I Khan, W Abbas… - Minerals, 2024 - mdpi.com
The evolution of Jurassic carbonates is globally significant for understanding the
depositional framework, diagenetic phases and sedimentary characteristics of shallow …

Isotope evidence for the enrichment mechanism of molybdenum in methane-seep sediments: Implications for past seepage intensity

M Jin, F Chen, N Li, J Peckmann, R Mathur… - … et Cosmochimica Acta, 2024 - Elsevier
Methane release from marine sediments strongly influences the local seafloor environment
and ecosystems, and may impact Earth's climate system. Recent studies revealed …

Late Quaternary marine transgressions inferred from the pyrite sulfur content and isotopes within core sediments from the southeast coast of China

X Chang, X Liu, J Liu, M Zhang, Y Gu, N Wang… - Palaeogeography …, 2023 - Elsevier
Paleoenvironmental reconstructions of coastal areas during geological history are critical for
understanding past responses to marine transgression. Identifying transgressive layers in …

Application of pyrite trace-metal and S and Ni isotope signatures to distinguish sulfate-versus iron-driven anaerobic oxidation of methane

C Chen, J Wang, TJ Algeo, JM Zhu, SW Poulton… - Chemical …, 2024 - Elsevier
The formation of authigenic pyrite in marine sediments involves multiple reactions between
ferrous iron (Fe 2+) and hydrogen sulfide (H 2 S). Ferrous iron is commonly provided …

Copper and zinc isotopic compositions of methane-derived carbonates: Implications for paleo-methane seepage and paleoenvironmental proxies

G Zhang, Y Deng, F Chen, M Li… - Geological …, 2024 - pubs.geoscienceworld.org
Copper-zinc isotopic excursions in carbonate sedimentary successions are used to trace
oceanic chemistry fluctuations that occurred in the geological past. However, whether …

Seawater sulphate heritage governed early Late Miocene methane consumption in the long-lived Lake Pannon

Z Lin, H Strauss, J Peckmann, AP Roberts… - … Earth & Environment, 2023 - nature.com
Sulphate deficiency makes lake environments a key source of atmospheric methane
because sulphate-driven anaerobic oxidation of methane (SD-AOM) is hindered. Miocene to …