Results 81 to 90 of about 2,697 (210)

Anatomy of the Right‐Lateral Strike‐Slip Cephalonia Fault to the Western Hellenic Arc Frontal Thrust

Tectonics, Volume 44, Issue 7, July 2025.
Abstract The region offshore the Ionian Islands (Kefalonia or Cephalonia, Lefkada, Zakynthos, and Ithaca), western Greece, is characterized by very high seismogenic and tsunamigenic potential. Despite numerous studies, many questions remain regarding the structures and kinematics in this area.
M. F. Loreto, V. Ferrante, M. Ligi, F. Muccini, C. Palmiotto, L. Petracchini, S. Romano, A. Ganas, A. Argnani, A. Conti, M. Cuffaro, S. Kothri, D. Lampridou, I. Merino, R. C. Ranero, P. Nomikou   +15 more
wiley   +1 more source

Submarine Salt Karst Terrains [PDF]

, 2016
Karst terrains that develop in bodies of rock salt (taken as mainly of halite, NaCl) are special not only for developing in one of the most soluble of all rocks, but also for developing in one of the weakest rocks.
Augustin, Nico, Talbot, Christopher
core   +2 more sources

Spontaneous Initiation and Evolution of Polygonal Fault Systems During the Early Burial of Sediments in 3D Numerical Models

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 7, July 2025.
Abstract Polygonal Fault Systems (PFS) or networks were generated in 3D finite‐difference models within the upper (active) layer of two‐layer model. The driving force of this process results from a progressive diagenetically induced volumetric contraction (porosity reduction) of the active layer during its burial.
A. I. Chemenda, G. Ballas, A. Gay
wiley   +1 more source

Gas Hydrate Occurrence Inferred from Dissolved Cl− Concentrations and δ18O Values of Pore Water and Dissolved Sulfate in the Shallow Sediments of the Pockmark Field in Southwestern Xisha Uplift, Northern South China Sea

Energies, 2014
Deep-water pockmarks are frequently accompanied by the occurrence of massive gas hydrates in shallow sediments. A decline in pore-water Cl− concentration and rise in δ18O value provide compelling evidence for the gas hydrate dissociation.
Min Luo, Linying Chen, Hongpeng Tong, Wen Yan, Duofu Chen   +4 more
doaj   +1 more source

Methane-related community of a carbonate-enriched pockmark, Brazilian Southeastern continental slope

Ocean and Coastal Research, 2022
Pockmarks are geological features that often sustain hydrocarbon-related communities of microorganisms when active, seeping oil or methane. Microbial communities of inactive pockmarks have not been well studied until the present.
Fernanda Mancini Nakamura, Rafael Andre Lourenço, Caio Augusto Magalhães, Amanda Gonçalves Bendia, Ana Carolina de Araújo Butarelli, Julia Gasparini Passos, Luiza Ferreira Soares, Raissa Basti Ramos, Tailisi Hoppe Trevizani, Camila Negrão Signori, Michel Michaelovitch de Mahiques, Paulo Yukio Gomes Sumida, Vivian Helena Pellizari   +12 more
doaj   +2 more sources

Numerical modelling of erosional landforms driven by offshore groundwater flow on siliciclastic continental margins: a conceptual approach

Frontiers in Earth Science
Offshore freshened groundwater (OFG) has long been hypothesised to be a key factor shaping continental margins worldwide. Field observations from siliciclastic margins suggest strong causal links between sub-seafloor OFG flow and seafloor depressions ...
Shubhangi Gupta, Shubhangi Gupta, Aaron Micallef   +2 more
doaj   +1 more source

Fluid flow at the Loppa High results from the seabed laboratory and test site

Frontiers in Earth Science
The Loppa High is a subsurface structural high located in SW Barents Sea flanked by regional fault complexes where many hydrocarbon discoveries have been made along its peripheries during recent years.
Shyam Chand, Harald Brunstad, Aivo Lepland, Terje Thorsnes, Jon Halvard Pedersen   +4 more
doaj   +1 more source

A Large-Scale Focused Fluid Flow Zone Between Atolls in the Xisha Islands (South China Sea): Types, Characteristics, and Evolution

Journal of Marine Science and Engineering
A large number of seabed depressions, covering an area of 2500 km2 in the Xisha Massif of the South China Sea, are investigated using newly collected high-resolution acoustic data.
Jixiang Zhao, Benjun Ma, Zhiliang Qin, Wenjian Lan, Benyu Zhu, Shuyi Pang, Mingzhe Li, Ruining Wang   +7 more
doaj   +1 more source

Note on paramoudra-like carbonate concretions in the Urenui Formation, North Taranaki: possible plumbing system for a Late Miocene methane seep field [PDF]

, 2004
A reconnaissance study of calcitic and dolomitic tubular concretions in upper slope mudstone of the Late Miocene Urenui Formation exposed along the north Taranaki coastline indicates that they have a complex diagenetic history involving different phases ...
Browne, Gregory H., Campbell, Kathleen A., Kamp, Peter J.J., King, Peter R., Nelson, Campbell S., Ricketts, Brian D., Schellenberg, Francesca   +6 more
core   +1 more source

Thermogenic methane injection via bubble transport into the upper Arctic Ocean from the hydrate-charged Vestnesa Ridge, Svalbard [PDF]

, 2014
We use new gas-hydrate geochemistry analyses, echosounder data, and three-dimensional P-Cable seismic data to study a gas-hydrate and free-gas system in 1200 m water depth at the Vestnesa Ridge offshore NW Svalbard.
Bünz, Stefan, Greinert, Jens, Mienert, Jürgen, Smith, Andrew J.   +3 more
core   +1 more source