Marine carbon burial enhanced by microbial carbonate formation at hydrocarbon seeps

D Smrzka, Y Tseng, J Zwicker… - … Earth & Environment, 2025 - nature.com
Some of the carbon removed from Earth's surface is stored within authigenic carbonate in
marine sediments. Methane seeps are crucial sites of global marine carbon cycling …

Carbonate chimneys at the highly productive point Dume methane seep: Fine‐scale mineralogical, geochemical, and microbiological heterogeneity reflects dynamic …

P Schroedl, M Silverstein, D DiGregorio… - …, 2024 - Wiley Online Library
Methane is a potent greenhouse gas that enters the marine system in large quantities at
seafloor methane seeps. At a newly discovered seep site off the coast of Point Dume, CA …

[HTML][HTML] Bacterial diether lipids as a novel proxy to reconstruct past changes in sedimentary oxygenation

BDA Naafs, J Blewett, RD Pancost - Geochimica et Cosmochimica Acta, 2024 - Elsevier
The degree of oxygenation of the marine water column and sediments has a major impact
on the dynamics of biogeochemical cycles and habitability for life. Reconstructing past …

Hydroxylated GDGTs-0 in marine methane seep environments: A putative indicator for archaeal methanogenesis

H Guan, L Liu, D Birgel, J Peckmann, D Feng, S Li - Organic Geochemistry, 2024 - Elsevier
Marine methane seeps are environments with a high microbial diversity, but are known for
one biogeochemical key process, the sulfate-driven anaerobic oxidation of methane (SD …

[HTML][HTML] Effects of coal mining activities on the changes in microbial community and geochemical characteristics in different functional zones of a deep underground …

Z Xu, L Zhang, Y Gao, X Tan, Y Sun, W Chen - Water, 2024 - mdpi.com
For deep underground coal mining ecosystems, research on microbial communities and
geochemical characteristics of sediments in different functional zones is lacking, resulting in …

[HTML][HTML] Lessons from lipid biomarkers preserved in methane-seep carbonates from the early Permian of Western Australia

S Wang, D Birgel, N Krake, C Shen, DW Haig… - Chemical …, 2024 - Elsevier
Sulfate-driven anaerobic oxidation of methane (SD-AOM) is the key biogeochemical process
at marine seeps, seafloor environments sustaining lush chemosynthesis-based life. While …

Two modes of gypsum replacement by carbonate and native sulfur in the Lorca Basin, SE Spain

SE Rouwendaal, D Birgel, V Grossi, G Aloisi… - Frontiers in Earth …, 2023 - frontiersin.org
Organoclastic sulfate reduction and bacterial sulfide oxidation have been suggested to
explain the formation of authigenic carbonate and native sulfur replacing gypsum in the …

Molecular fossils in reefal carbonates and sponges of the deep fore reef of Mayotte and Mohéli, Comoro Islands, western Indian Ocean

JM Maak, D Birgel, J Reitner, E Gischler, WC Dullo… - Facies, 2024 - Springer
Microbial carbonates are common components of Quaternary tropical coral reefs. Previous
studies revealed that sulfate-reducing bacteria trigger microbial carbonate precipitation in …

Pyrite and reactive iron fluxes in deep (> 966 m) sediments of the Gulf of Mexico

J Garcia-Orozco, MA Huerta-Diaz, KG Mejia-Piña… - Chemical …, 2022 - Elsevier
The Fe concentrations associated with operationally defined microbially reducible (Fe MR),
pyrite (Fe pyr) and reactive (Fe reac= Fe MR+ Fe pyr) geochemical fractions were analyzed …

[PDF][PDF] Biomarker Indicators of Cold Seeps

H Guan, L Liu, N Wu, S Li - South China Sea Seeps, 2023 - library.oapen.org
Lipid biomarkers of seep carbonates and sediments retrieved from the Dongsha area,
Shenhu, Site F and Haima in the South China Sea (SCS) over the last two decades were …