Results 31 to 40 of about 9,084 (144)

The magnetic stripe signatures of the North Atlantic Ocean crust derived from Swarm and Macau Science Satellite-1 observations

Earth and Planetary Physics
The Earth's crust, the outer shell of the Earth, consists of continental crust and oceanic crust. Oceanic crust is created at the mid-oceanic ridge, where it is magnetized in the ambient field of the Earth.
PengFei Liu, Liang Yin, ShiDa Sun, HongBo Yao   +3 more
doaj   +1 more source

Undulations in Subducted Oceanic Crust Correlate With Shallow Tremor Distribution in the Kuril Trench Off Hokkaido

Geophysical Research Letters
Recent research has shown that shallow tremors tend to occur in spatial association with heterogeneous conditions, which are formed by seamounts or ridges on the subducted oceanic crust. In the southern Kuril Trench, shallow tremors have been observed on
Hiroto Yamaguchi, Shuichi Kodaira, Gou Fujie, Tetsuo No, Yasuyuki Nakamura, Kazuya Shiraishi, Nobukazu Seama   +6 more
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Gravitational Potential Energy per Unit Area as a Constraint on Archean Sea Level

Geochemistry, Geophysics, Geosystems, 2018
To constrain the density structure of Archean lithosphere, I assume that gravitational potential energy (GPE) per unit area at Archean spreading centers equals that for continents whose surfaces lay near sea level.
Peter Molnar
doaj   +1 more source

Workshop report on hard-rock drilling into mid-Cretaceous Pacific oceanic crust on the Hawaiian North Arch [PDF]

Scientific Drilling, 2019
The architecture, formation, and modification of oceanic plates are fundamental to our understanding of key geologic processes of the Earth. Geophysical surveys were conducted around a site near the Hawaiian Islands (northeastern Hawaiian North Arch ...
T. Morishita, T. Morishita, S. Umino, J.-I. Kimura, M. Yamashita, M. Yamashita, S. Ono, K. Michibayashi, M. Tominaga, F. Klein, M. O. Garcia   +10 more
doaj   +1 more source

Rifting and thermal evolution of the Northwestern Mediterranean

Annals of Geophysics, 1995
The structural setting of the Northwestern Mediterranean stems from tectonothermal processes which reflect on the nature of the crust. The Oligocene to Present evolution is here analysed with a thermal model which takes into account the significant ...
P. Chiozzi, M. Verdoya, V. Pasquale
doaj   +1 more source

Rapid magma ascent beneath La Palma revealed by seismic tomography

Scientific Reports, 2022
For the first time, we obtained high-resolution images of Earth's interior of the La Palma volcanic eruption that occurred in 2021 derived during the eruptive process.
Luca D’Auria, Ivan Koulakov, Janire Prudencio, Iván Cabrera-Pérez, Jesús M. Ibáñez, Jose Barrancos, Rubén García-Hernández, David Martínez van Dorth, Germán D. Padilla, Monika Przeor, Victor Ortega, Pedro Hernández, Nemesio M. Peréz   +12 more
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Seismic visibility of carbonated subducted oceanic crust in the lower mantle

Communications Earth & Environment
Seismological studies have previously detected abundant scatterers in the lower mantle, potentially linked to long-term slab subduction, and petrology studies suggest carbonates can be sequestrated within the oceanic crust and transported into the lower ...
Yajie Zhao, Xin Deng, Wenzhong Wang, Zhongqing Wu, Ye Yuan   +4 more
doaj   +1 more source

THE ORIGIN AND STRUCTURE OF THE LOWER CRUST OF OCEANS AND BACK-ARC SEAS: EVIDENCE FROM THE MARKOV DEEP (MID-ATLANTIC RIDGE) AND THE VOIKAR OPHIOLITE ASSOCIATION (POLAR URALS)

Геодинамика и тектонофизика, 2019
The Markov Deep (the axial part of the slow-spreading Mid-Atlantic Ridge, 6°N, Sierra Leone oceanic core complex) and the Paleozoic Voikar ophiolite association (Polar Urals) formed in the back-arc sea conditions.
E. V. Sharkov
doaj   +1 more source

K‐Metasomatic Weakening of Oceanic Crust at Shallow Subduction Depths: Evidence From the Rodeo Cove Thrust Zone, Marin Headlands, California

Geochemistry, Geophysics, Geosystems
Studies of exhumed subduction shear zones indicate that metamorphism and metasomatism of the oceanic lithosphere influence the composition, structure, and rheology of megathrust faults, particularly deep along the plate boundary (>30 km).
Benjamin D. Belzer, Melodie E. French, Noah J. Phillips   +2 more
doaj   +1 more source

Revised global vertically integrated remanent magnetization model of the oceanic lithosphere with comparison to LCS-1 model and MSS-1 magnetic measurements

Earth and Planetary Physics
The lithospheric magnetic field is an important component of the geomagnetic field, and the oceanic lithosphere exhibits distinct characteristics. Because of its formation mechanisms, evolutionary history, and geomagnetic field polarity reversals, the ...
ShiDa Sun, Hui Li, JinSong Du, Pan Zhang, Chao Chen, PengFei Liu   +5 more
doaj   +1 more source