Carbon Geochemistry of Cold Seeps: Methane Fluxes and Transformation in Sediments from Kaz

Methane oxidation rates and fluxes in cold seep sediments are constrained by modeling pore-water sulfate profiles. The dataset, from Geoscience Australia Data, includes pore-water and solid-phase measurements from the Kazan Mud Volcano in the Eastern Mediterranean Sea, with a last update recorded in 2026. Model results indicate a narrow depth interval of 14-18 cm for anaerobic oxidation of methane, with microbial biomass representing about 20% of the total organic carbon.

Use Cases

• Model methane flux and anaerobic oxidation rates based on pore-water sulfate and conservative constituent profiles.
• Estimate gas hydrate formation potential based on predicted asymptotic methane concentrations near saturation.
• Analyze microbial biomass contribution to organic carbon based on isotopic mass balance calculations.
• Study fluid advection as a transport mechanism in surface sediments using the proposed model approach.

Strengths

• Data is tied to a specific, named geographic feature: the Kazan Mud Volcano in the Eastern Mediterranean Sea.
• Description provides specific modeled depth intervals (14-18 cm below sediment-water interface) and quantitative results (microbial biomass ~20% of total organic carbon).
• Last updated timestamp is precise: 2026-05 14 09:06:13.100808.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.
• Data freshness should be verified despite the 2026 update date, as the underlying study period is not specified.

Provenance

Source

Geoscience Australia Data

Collection Method

Pore-water and solid-phase measurements from sediment cores, with modeling of sulfate profiles and isotopic mass balance.

Time Range

null

Freshness

Last updated 2026-05-14 09:06:13.100808; freshness should be verified.

Geography

Kazan Mud Volcano, Eastern Mediterranean Sea