Results 111 to 120 of about 113,713 (252)

The Seismic Expression of Core Complex‐Style Extensional Detachment Faults in Rifted Margins

Terra Nova, EarlyView.
ABSTRACT The identification of core complex‐style extensional detachment faults (CCDFs) in rifted margins is crucial for accurately restoring their stratigraphic and thermal histories. Yet recognising CCDFs in seismic reflection images is challenging due to their faint topographic expression; the lack of associated abrupt offset in seismic reflections;
Pauline Chenin, Gianreto Manatschal, Cuimei Zhang, Peng Chao   +3 more
wiley   +1 more source

Ultra-depleted melts from Kamchatkan ophiolites : evidence for the interaction of the Hawaiian plume with an oceanic spreading center in the Cretaceous? [PDF]

, 2009
We report new data on the major and trace element composition of melt inclusions in spinel phenocrysts (Mg# = 0.7-0.8, Cr/(Cr + Al) = 0.32-0.52, TiO2 = 0.06-0.60 wt.%) from Cretaceous MORB-like basalt (La/Yb = 0.94, Th/Nb = 0.055, Th/La = 0.041) in the ...
Hoernle, Kaj, Portnyagin, Maxim, Savelyev, D.   +2 more
core   +1 more source

Report of the ICES\NAFO Joint Working Group on Deep-water Ecology (WGDEC), 11–15 March 2013, Floedevigen, Norway. [PDF]

, 2013
On 11 February 2013, the joint ICES/NAFO WGDEC, chaired by Francis Neat (UK) and attended by ten members met at the Institute for Marine Research in Floedevi-gen, Norway to consider the terms of reference (ToR) listed in Section 2. WGDEC was requested to
Auster, PJ, Bergstad, OA, Brock, R, Colaco, A, Duran Munoz, P, Ellwood, H, Golding, N, Grehan, A, Hall-Spencer, J, Howell, K, Ingels, J, Kenchington, E, McIntyre, F, Monot, L, Mortensen, PB, Neat, F, Nieto-Conde, F, Pinto, C, Ross, S, Vinnichenko, V, Watling, L   +20 more
core   +1 more source

The role of synoptic waves in the formation and maintenance of the Western Hemisphere circulation pattern [PDF]

, 2017
Previous studies have demonstrated that the NAO, the leading mode of atmospheric low-frequency variability over the North Atlantic, could be linked to Northeast Pacific climate variability via the downstream propagation of synoptic waves.
Bao, Ming, Ceppi, Paulo, Hartmann, Dennis L., Tan, Xin   +3 more
core   +2 more sources

Catalogue of source mechanisms and overview of present-day stress fields in the western region of the Africa–Eurasia plate boundary

Frontiers in Earth Science
Complex deformation is observed along the plate boundary between the Africa and Eurasia plates, this complexity is highlighted by the faulting mechanism changing from normal faulting at the Mid-Atlantic Ridge to thrust and strike-slip faulting in the ...
Farida Ousadou, Abdelhakim Ayadi, Mourad Bezzeghoud   +2 more
doaj   +1 more source

Crustal Accretion, Significant Mantle Uplift, and Exhumation along Non-transform Discontinuities: Equatorial Mid-Atlantic Ridge (7º 10’ – 0º 50’ N)

Brazilian Journal of Geophysics
The exhumation and exposure of mantle rocks is a common process that takes place during the tectono-magmatic evolution of a newly created lithosphere along slow- and ultraslow-spreading oceanic ridges, such as the Equatorial Mid-Atlantic Ridge.
Heliásio Augusto Simões, Moab Praxedes Gomes, Patrícia Reis Alencar Oliveira, Mauro Lisboa Souza, Hugo Leonardo De Andrade Rocha, Vadim Harlamov   +5 more
doaj   +1 more source

Black smokers on the Mid‐Atlantic Ridge

Eos, Transactions American Geophysical Union, 1985
Evidence for a variety of active hydrothermal venting phenomena, including black smokers, was discovered at a site on the Mid‐Atlantic Ridge by a research team of government and university scientists. The work was accomplished on a cruise of the National Oceanic and Atmospheric Administration (NOAA) ship Researcher during July 1985 as part of the NOAA ...
openaire   +1 more source

Dermal denticles and morphometrics of the sailfin roughshark Oxynotus paradoxus (Elasmobranchii, Oxynotidae), with comments on its geographic distribution [PDF]

, 2003
The dermal denticles of the sailfin roughshark Oxynotus paradoxus are described and illustrated with SEM pictures, based on two specimens captured at the Azores. The flank denticles are similar to those of O.
Azevedo, José M. N., Brum, João M. M., Sousa, Fernando L.   +2 more
core  

Correction to: Genome-resolved evidence for functionally redundant communities and novel nitrogen fixers in the deyin-1 hydrothermal field, Mid-Atlantic Ridge. [PDF]

Microbiome, 2022
Pan J, Xu W, Zhou Z, Shao Z, Dong C, Liu L, Luo Z, Li M.   +7 more
europepmc   +1 more source

An Overview of Tsunami Hazards in the Southwest Pacific Ocean

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.
The southwest Pacific region is geologically complex and exhibits all the principal causes of tsunami generation. While contemporary events and historical catalogs indicate that trans‐Pacific tsunamis have affected this area (∼18% of tsunamis reported globally), it is unique in that a large part of the tsunami effects over the ∼200‐year historical ...
Jean H. M. Roger, Bruce E. O. Thomas, Jose Borrero, Brook Tozer, Julien Collot, Samuel Etienne, Catherine Chagué, Patrick D. Nunn, Emily M. Lane, Shaun Williams, David Burbidge, Hannah E. Power, William Power, Bernard Pelletier   +13 more
wiley   +1 more source