Zobrazeno 1 - 10
of 6 345
pro vyhledávání: '"mid‐ocean ridge"'
Autor:
Lynne Elkins, Sarah Lambart
Publikováno v:
Volcanica, Vol 7, Iss 2, Pp 685-715 (2024)
We present computational modeling outcomes for bilithologic (peridotite and pyroxenite) mantle melting in divergent environments, considering equilibrium and disequilibrium porous flow melting of 0–50 % pyroxenite in thermal equilibrium with perido
Externí odkaz:
https://doaj.org/article/ef429964737241ee925c15eb09bfb237
Autor:
Philipp A. Brandl, Christoph Beier, Karsten M. Haase, Felix S. Genske, Folkmar Hauff, Marcel Regelous, Colin W. Devey, Lars H. Rüpke
Publikováno v:
Frontiers in Earth Science, Vol 12 (2024)
The intersection of the Foundation Plume with the Pacific-Antarctic Ridge is a key location in global geodynamics where a mantle plume is approached by and interacting with a fast-spreading mid-ocean ridge. Here, we discuss a comprehensive major and
Externí odkaz:
https://doaj.org/article/712c397e51ea4abe84cb3ac3e9f49b0a
Publikováno v:
AGU Advances, Vol 5, Iss 4, Pp n/a-n/a (2024)
Abstract Seismic energy arriving before the compressional (P) wave passing through the core (PKP), called PKP precursors, have been detected for decades, but the origin of those arrivals is ambiguous. The largest amplitude arrivals are linked to scat
Externí odkaz:
https://doaj.org/article/40b1e92ea3874f43b38b4ac6e215e7c7
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 25, Iss 8, Pp n/a-n/a (2024)
Abstract In a deforming partially molten rock, melt concentrates into a grain‐scale melt pocket aligned at a preferred orientation (melt‐preferred orientation, or MPO). However, observing this texture alone provides limited information on the 3D
Externí odkaz:
https://doaj.org/article/8a81a29bd37d43c494ef892930125e62
Autor:
Ross Parnell‐Turner
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 11, Pp n/a-n/a (2024)
Abstract The South Atlantic Ocean hosts several well‐studied volcanic ridges and seamount chains, but the origin of their associated mantle plumes is debated. Reduced seismicity on the southern Mid‐Atlantic Ridge (MAR) suggests anomalously ductil
Externí odkaz:
https://doaj.org/article/c9e67effeb2f4a288195fd00b5fbadd3
Autor:
Yutaka Yoshimura, Masakazu Fujii
Publikováno v:
Earth, Planets and Space, Vol 76, Iss 1, Pp 1-14 (2024)
Abstract Describing the evolution of the neo-volcanic zone in the spreading ridge is essential for understanding the dynamics and environments of abyssal basins. However, the absolute dating of ocean floor basalts is generally difficult. As a charact
Externí odkaz:
https://doaj.org/article/bf235c33d0364049af1531d2703564da
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 25, Iss 4, Pp n/a-n/a (2024)
Abstract The ultraslow‐spreading Mohns Ridge is a key supersegment of the Arctic Mid‐Ocean system, where it represents a boundary between the Jan Mayen hotspot in the south and the highly anomalous Knipovich Ridge to the north. Understanding the
Externí odkaz:
https://doaj.org/article/99d20c690c2249ac89b69e6dd829b894
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 25, Iss 3, Pp n/a-n/a (2024)
Abstract We report on a 3 years monitoring experiment of low to medium temperature diffuse venting at two vent sites (Tour Eiffel and White Castle) of the Lucky Strike, black smoker‐type hydrothermal field, Mid‐Atlantic Ridge. Diffuse vents accou
Externí odkaz:
https://doaj.org/article/e606547fb9de476fb859005aa8cf88bd
Autor:
Kyoko Okino, Kenichiro Tani, Masakazu Fujii, Fei Zhou, Osamu Ishizuka, Yasuhiko Ohara, Tomoko Hanyu, Yuki Matamura
Publikováno v:
Progress in Earth and Planetary Science, Vol 10, Iss 1, Pp 1-22 (2023)
Abstract Detachment faulting is one of the main styles of seafloor spreading at slow to intermediate mid-ocean ridges. However, we have limited insight into its role in back-arc basin formation. We surveyed a remnant back-arc spreading center in the
Externí odkaz:
https://doaj.org/article/0c672e771a254332aeb7ed4eb843e31a
Publikováno v:
Progress in Earth and Planetary Science, Vol 10, Iss 1, Pp 1-19 (2023)
Abstract Troctolites were recovered during Integrated Ocean Drilling Program Expedition 345 at the Hess Deep Rift, next to fast-spreading East Pacific Rise. These troctolites are divided into three groups based on textural differences: coarse-grained
Externí odkaz:
https://doaj.org/article/d0324e8d5e874bcba0eb9fa7db4f5cc5