Physiological limits to life in anoxic subseafloor sediment

WD Orsi, B Schink, W Buckel… - FEMS microbiology …, 2020 - academic.oup.com
In subseafloor sediment, microbial cell densities exponentially decrease with depth into the
fermentation zone. Here, we address the classical question of'why are cells dying faster than …

Sedimentary parameters control the sulfur isotope composition of marine pyrite

I Halevy, DA Fike, V Pasquier, RN Bryant, CB Wenk… - Science, 2023 - science.org
Reconstructions of coupled carbon, oxygen, and sulfur cycles rely heavily on sedimentary
pyrite sulfur isotope compositions (δ34Spyr). With a model of sediment diagenesis, paired …

In situ bottom sediment temperatures in the Siberian arctic seas: Current state of subsea permafrost in the Kara Sea vs Laptev and East Siberian seas

B Bukhanov, E Chuvilin, M Zhmaev, N Shakhova… - Marine and Petroleum …, 2023 - Elsevier
Features of sediment temperature on the shelf and continental slope areas of the Russian
Arctic seas and its physical properties are important for understanding the current state of …

Bottom‐simulating reflector dynamics at Arctic thermogenic gas provinces: An example from Vestnesa Ridge, offshore west Svalbard

A Plaza‐Faverola… - Journal of …, 2017 - Wiley Online Library
Abstract The Vestnesa Ridge comprises a> 100 km long sediment drift located between the
western continental slope of Svalbard and the Arctic mid‐ocean ridges. It hosts a deep water …

Influence of seafloor topography on gas hydrate occurrence across a submarine canyon-incised continental slope in the northern margin of the South China Sea

J Wang, S Wu, J Sun, W Feng, Q Li - Marine and Petroleum Geology, 2021 - Elsevier
In a submarine canyon-incised continental slope, the observed bottom simulation reflection
(BSR) frequently appears not to match with the predicted base of the gas hydrate stability …

Thermal conductivity of marine sediments influenced by porosity and temperature in the South China Sea

X Zhang, G Kong, H Li, L Wang, Q Yang - Ocean Engineering, 2022 - Elsevier
A series of laboratory studies were conducted to explore the thermal properties of marine
sediments from the South China Sea. The test specimens were obtained from depths of 733 …

Dynamic simulations of potential methane release from East Siberian continental slope sediments

C Stranne, M O'Regan, GR Dickens… - Geochemistry …, 2016 - Wiley Online Library
Sediments deposited along continental margins of the Arctic Ocean presumably host large
amounts of methane (CH4) in gas hydrates. Here we apply numerical simulations to assess …

Multi-measurement approach for establishing the base of gas hydrate occurrence in the Krishna-Godavari Basin for sites cored during expedition NGHP-02 in the …

WF Waite, CD Ruppel, TS Collett, P Schultheiss… - Marine and Petroleum …, 2019 - Elsevier
Abstract The 2015 National Gas Hydrate Program of India's second expedition, NGHP-02,
acquired logging and coring datasets for constraining the base of the gas hydrate …

Surface heat flow measurements from the East Siberian continental slope and southern Lomonosov Ridge, Arctic Ocean

M O'Regan, P Preto, C Stranne… - Geochemistry …, 2016 - Wiley Online Library
Surface heat flow data in the Arctic Ocean are needed to assess hydrocarbon and methane
hydrate distributions, and provide constraints into the tectonic origins and nature of …

A natural gas hydrate system on the Exmouth Plateau (NW shelf of Australia) sourced by thermogenic hydrocarbon leakage

M Paganoni, JJ King, M Foschi, K Mellor-Jones… - Marine and Petroleum …, 2019 - Elsevier
The identification of natural gas hydrates and shallow free gas in sedimentary basins is
critical for understanding the organic carbon cycle dynamics in the shallow geosphere, as …