Results 1 to 10 of about 20,887 (256)

Seafloor spreading of the third arm of the Afar triple junction: A review [PDF]

open access: goldHeliyon
The only place within the East African Rift System where seafloor spreading is being manifested along with new crust being formed is at the Afar triple junction, a seismically active area defined by latitude 9°N to 14°N and longitude 43E° to 49E ...
Duke N. Nyangena   +2 more
doaj   +4 more sources

13 million years of seafloor spreading throughout the Red Sea Basin [PDF]

open access: yesNature Communications, 2021
Here, based on earthquake data, vertical gravity gradient data and high-resolution bathymetry, the authors show that the Red Sea is not in transition from rifting to spreading as previously proposed.
Nico Augustin   +3 more
doaj   +2 more sources

Seismological Evidence for Girdled Olivine Lattice‐Preferred Orientation in Oceanic Lithosphere and Implications for Mantle Deformation Processes During Seafloor Spreading

open access: goldGeochemistry, Geophysics, Geosystems, 2022
Seismic anisotropy produced by aligned olivine in oceanic lithosphere offers a window into mid‐ocean ridge (MOR) dynamics. Yet, interpreting anisotropy in the context of grain‐scale deformation processes and strain observed in laboratory experiments and ...
J. B. Russell   +7 more
doaj   +4 more sources

Recognizing detachment-mode seafloor spreading in the deep geological past. [PDF]

open access: yesSci Rep, 2013
Large-offset oceanic detachment faults are a characteristic of slow- and ultraslow-spreading ridges, leading to the formation of oceanic core complexes (OCCs) that expose upper mantle and lower crustal rocks on the seafloor.
Maffione M, Morris A, Anderson MW.
europepmc   +3 more sources

Ignition of the southern Atlantic seafloor spreading machine without hot-mantle booster [PDF]

open access: yesScientific Reports, 2023
The source of massive magma production at volcanic rifted margins remains strongly disputed since the first observations of thick lava piles in the 1980s.
Daniel Sauter   +8 more
doaj   +2 more sources

Magnetic anomaly lineations in the Northeastern South China Sea and their implications for initial seafloor spreading [PDF]

open access: goldFrontiers in Earth Science, 2023
Ridge jumps occurred during the spreading process of the South China Sea. Recent research on the lower crustal reflectors event on seismic profiles found at least two southward ridge jumps, but only one has been confirmed by geomagnetic data.
Zhaocai Wu   +4 more
doaj   +2 more sources

Timing of Seafloor Spreading Cessation at the Macquarie Ridge Complex (SW Pacific) and Implications for Upper Mantle Heterogeneity [PDF]

open access: bronzeGeochemistry, Geophysics, Geosystems, 2021
The Macquarie Ridge Complex (MRC) on the Australia‐Pacific plate boundary south of New Zealand is an extinct mid‐ocean ridge that has experienced a complex tectonic history and produced highly heterogeneous mid‐ocean ridge basalts (MORBs).
Qiang Jiang   +9 more
doaj   +2 more sources

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

open access: greenGeochemistry, 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   +8 more
doaj   +2 more sources

Lithospheric Structure and Extensional Style of the Red Sea Rift Segments [PDF]

open access: yesLithosphere, 2023
The Red Sea provides an opportunity to study the processes during the transition from continental rifting to early-stage seafloor spreading during ocean initiation.
Kuruvamana Satheeshbabu Sreenidhi   +2 more
doaj   +1 more source

Insights on the Indian Ocean Tectonics and Geophysics Supported by GMT [PDF]

open access: yesRiscuri şi Catastrofe, 2020
This paper presented analyzed and summarized data on geological and geophysical settings about the tectonics and geological structure of the seafloor of the Indian Ocean by thematic visualization of the topographic, geophysical and geological data.
Polina Lemenkova
doaj   +1 more source

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