Results 31 to 40 of about 20,365 (298)

Break-up and seafloor spreading domains in the NE Atlantic

Geological Society, London, Special Publications, 2017
Abstract An updated magnetic anomaly grid of the NE Atlantic and an improved database of magnetic anomaly and fracture zone identifications allow the kinematic history of this region to be revisited. At break-up time, continental rupture occurred parallel to the Mesozoic rift axes in the south, but obliquely to the previous rifting trend in ...
Carmen Gaina, Aziz Nasuti, Geoffrey S. Kimbell, Anett Blischke   +3 more
openalex   +6 more sources

Nature and Origin of Magnetic Lineations Within Valdivia Bank: Ocean Plateau Formation by Complex Seafloor Spreading

Geophysical Research Letters, 2023
Valdivia Bank (VB) is a Late Cretaceous oceanic plateau formed by volcanism from the Tristan‐Gough hotspot at the Mid‐Atlantic Ridge (MAR). To better understand its origin and evolution, magnetic data were used to generate a magnetic anomaly grid, which ...
S. Thoram, W. W. Sager, K. Gaastra, S. M. Tikoo, C. Carvallo, A. Avery, Arianna V. Del Gaudio, Y. Huang, K. Hoernle, T. W. Höfig, R. Bhutani, D. M. Buchs, C. Class, Y. Dai, G. Dalla Valle, S. Fielding, S. Han, D. E. Heaton, S. Homrighausen, Y. Kubota, C.‐F. Li, W. R. Nelson, E. Petrou, K. E. Potter, S. Pujatti, J. Scholpp, J. W. Shervais, M. Tshiningayamwe, X. J. Wang, M. Widdowson   +29 more
doaj   +1 more source

Time dependent seafloor acoustic backscatter (10-100kHz) [PDF]

, 2003
A time-dependent model of the acoustic intensity backscattered by the seafloor is described and compared with data from a calibrated, vertically oriented, echo-sounder operating at 33 and 93 kHz.
de Moustier, Christian, Sternlicht, Daniel D   +1 more
core   +3 more sources

Ocean Sciences with the Spilhaus Projection: A Seamless Ocean Map for Spatial Data Recognition

Scientific Data, 2023
The ocean, as a vast interconnected body of water on Earth, plays an essential role in Earth’s planetary dynamics, climate change, and the evolution of human society and decision-making processes.
Jie Chen, Tao Zhang, Masako Tominaga, Javier Escartin, Ruixin Kang   +4 more
doaj   +1 more source

Hydrothermal activity and magma genesis along a propagating back-arc basin: Valu Fa Ridge (southern Lau Basin) [PDF]

, 2006
Valu Fa Ridge is an intraoceanic back-arc spreading center located at the southern prolongation of the Lau basin. Bathymetric observations as well as detailed sampling have been carried out along the spreading axis in order to trace hydrothermal and ...
Fretzdorff, S., Garbe-Schönberg, C.-Dieter, Gibson, H.L., Hauff, Folkmar, Schwarz-Schampera, U., Stoffers, Peter   +5 more
core   +1 more source

A Global Data Set of Present‐Day Oceanic Crustal Age and Seafloor Spreading Parameters

Geochemistry, Geophysics, Geosystems, 2020
We present an updated oceanic crustal age grid and a set of complementary grids including spreading rate, asymmetry, direction, and obliquity. Our data set is based on a selected set of magnetic anomaly identifications and the plate tectonic model of ...
Maria Seton, R. Dietmar Müller, Sabin Zahirovic, Simon Williams, Nicky M. Wright, John Cannon, Joanne M. Whittaker, Kara J. Matthews, Rebecca McGirr   +8 more
doaj   +1 more source

Hydration in the Crust and Upper Mantle Near the Extinct Spreading Ridge in the Eastern Sub‐Basin, South China Sea

Geophysical Research Letters
During the final stages of seafloor spreading in the East Sub‐basin of the South China Sea, spreading transitioned from slow to ultraslow before cessation.
Hui Jiang, Haibo Huang, Enyuan He, Jian Guo, Xuelin Qiu   +4 more
doaj   +2 more sources

Seafloor Magnetic Patterns: Seafloor Spreading and Magnetization in the Southern Ocean [PDF]

Exploration Geophysics, 1986
An extensive network of magnetic survey lines now extends over the Southern Ocean (Fig. 1). Measurements of total field have been made by ship, aircraft, and at high altitude from satellites. However, because of the vastness of the region, coverage is mostly at reconnaissance level, with some areas such as the Antarctic continental margin very sparsely
openaire   +2 more sources

Contrasting geophysical and geochemical signatures of a volcano at the axis of the Wharton Fossil Ridge (N-E Indian Ocean)

, 1999
International audienceThe Styx volcano is a prominent seamount (20-30 km diameter, 2500 m high) located at the axis of the Wharton fossil spreading center (N-E Indian Ocean), where seafloor spreading stopped 40 Ma ago.
Deplus, Christine, Diament, Michel, Hébert, Hélène, Villemant, Benoit   +3 more
core   +3 more sources

Seismic characteristics of sediment drifts: An example from the Agulhas Plateau, southwest Indian Ocean [PDF]

, 2001
Sediment drifts provide information on the palaeoceanographic development of a region. Additionally, they may represent hydrocarbon reservoirs. Because of this, sediment drift investigation has increased over the last few years. Nevertheless, a number of
Uenzelmann-Neben, Gabriele
core   +1 more source