Results 51 to 60 of about 2,198 (206)

Seismic Stratigraphy of Eocene–Recent Mixed Depositional Systems on the SE New Zealand Continental Margin, Great South Basin

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
The continental margin of SE New Zealand is strongly influenced by the Southland Current and associated water masses. This new seismic stratigraphic study of the margin has revealed a range of depositional mounds and erosional channels that document the close interaction of turbidity and bottom currents in shaping the margin from the Mid‐Eocene onward.
Onyekachi N. Ibezim, Dorrik Stow, Uisdean Nicholson, Sara Rodrigues   +3 more
wiley   +1 more source

Large‐Scale Submarine Sediment Waves at Macauley Caldera Volcano: In Situ Evidence of High‐Flux, Syn‐Eruptive Submarine Transport

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract Two sediment cores were collected from a submarine sediment wave field on the flank of Macauley volcano. Combined with seismic reflection surveys and numerical modeling, we present an integrated model of the formation of large‐scale, eruption‐fed, submarine sediment waves. The sediment waves are large (>100 m high, 1.5 km wide, tens of km long)
Shannon E. Frey, Martin Jutzeler, Matthieu Cartigny, Rebecca J. Carey   +3 more
wiley   +1 more source

Cenozoic Contourites in the Eastern Great Australian Bight, Offshore Southern Australia: Implications For the Onset of the Leeuwin Current

Journal of Sedimentary Research, 2019
13 14 Thermohaline oceanic currents influence global heat transfer, controlling local and global 15 variations in climate, biodiversity, and the terrestrial biosphere. Paleoceanographic studies 16 typically use biostratigraphic and geochemical proxies to
C. Jackson, C. Magee, Esther R. Hunt-Stewart   +2 more
semanticscholar   +1 more source

Geochemical Analysis of Diachronous V‐Shaped Ridges and Troughs That Flank the Reykjanes Ridge South of Iceland

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract It is recognized that mantle plumes play a direct role in generating regional uplift and producing immense volumes of basaltic magmatism, both of which can influence paleoclimate. The Icelandic Plume, beneath the North Atlantic Ocean, is of particular importance due to its size and position at a significant paleoceanographic gateway.
Nicky White, Chia‐Yu Tien, Callum Pearman, John Maclennan, Bramley Murton, Expedition 395 Scientists   +5 more
wiley   +1 more source

A Global Evaluation of Lithology‐Dependent Marine Sediment Compaction Parameters and Their Uncertainties

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract Tectonic subsidence, sea level, and paleoclimate reconstructions using marine records rely on accurate decompaction of the sediment column. Over time, increased overburden pressure from burial decreases sediment porosity with depth. The porosity‐depth relationship is lithology‐dependent and can be represented by an exponential function ...
Haley Svadlenak, Ross Parnell‐Turner, Margaret Morris   +2 more
wiley   +1 more source

Plio‐Pleistocene Antarctic Bottom Water Production in the Ross Sea Reconstructed From Hillary Canyon Levee Turbidites

Paleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.
Abstract Dense shelf water (DSW) formed on Antarctica's continental shelves is a significant precursor for Antarctic Bottom Water (AABW), a critical component of global overturning circulation. We hypothesize that DSW cascades off the central Ross Sea shelf generated density currents that entrained sediment as they flowed down Hillary Canyon, resulting
Natalia Varela, Brian W. Romans, Zoltán Sylvester, Molly O. Patterson, Denise K. Kulhanek, Laura De Santis, Robert McKay   +6 more
wiley   +1 more source

Echo character mapping and depositional processes on the western Svalbard continental margin

Polar Research
An echo character mapping study of the western Svalbard continental margin, based on ca. 3980 km of archived sub-bottom profile data, is presented. Four distinct echo character types are recognized.
Niamh I. Doherty, John A. Howe
doaj   +1 more source

Beyond the Bulk: Magnetic Property Variations With Sediment Grain Size. Insights Into Process and Provenance

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 1, January 2026.
Abstract Bulk (whole sample) magnetic properties of three‐hundred‐sixty‐two samples from five North Atlantic Ocean sediment cores are compared to the magnetic properties of five grain‐size fractions separated from the same samples. The relative abundance and magnetic properties of the size fractions are highly variable both within a core and among ...
R. G. Hatfield, B. T. Freiberg, J. C. Kowalski, B. H. Wheeler, B. A. Housen, J. S. Stoner   +5 more
wiley   +1 more source

Dynamic Controls on Salt Structures and Translation Velocity at Continental Rifted Margins

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract Salt tectonics at rifted margins involves intricate interactions between weak, viscous evaporite layers and brittle sedimentary rocks. Geophysical data and geological interpretation offer valuable insights into evaporite structure formation and the average translation rate of evaporite and sediment layers on time scales of several million ...
Zhichen Wang, Sascha Brune, Derek Neuharth, Anne C. Glerum, Delphine Rouby, Naiara Fernandez, Xuesong Ding   +6 more
wiley   +1 more source

Cyclic Pockmark Formation Linked to Plio‐Pleistocene Sea‐Level Rise on the Chatham Rise, New Zealand

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract Pockmarks are geomorphological depressions on the seafloor in various underwater environmental settings. They are commonly linked to fluid release from subsurface reservoirs; however, the processes involved, fluid types, and relative timing of their formation often remain enigmatic.
Fynn Warnke, Ingo A. Pecher, Lorna J. Strachan, Jess I. T. Hillman, Brandon Dugan   +4 more
wiley   +1 more source