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Dec 17, 2022 · The crustal accretion along mid-ocean ridges is known to be spreading-rate dependent. ... The average crustal thickness within the pseudo-fault trough is ~5.2 km with the thinnest crust of ~4.8 ...
Aug 21, 2024 · These results, together with existing ice-station seismic observations 16, reveal a highly variable crustal structure along the Gakkel Ridge, with a segment-averaged crustal thickness ranging from ...
Sep 17, 2020 · Crustal accretion at slow-spreading crust is relatively stable with 75% of all crust formed at slow-spreading ridges exhibiting only a minor, within 5%, amount of asymmetry and 98% of crust is generated within 25% of symmetry (Figures 4 and S8). A marked change in the distribution of spreading obliquities occurs between ultraslow and slow-spreading systems from a linear trend toward a more ...
- Maria Seton, R. Dietmar Müller, Sabin Zahirovic, Simon Williams, Simon Williams, Nicky M. Wright, Jo...
- 101
- 2020
- 17 September 2020
Sep 2, 2020 · The crustal thickness decrease and insensitivity of melting to spreading rate suggest that mantle potential temperature may play a crucial role in oceanic accretion at fast-spreading centers, as mantle temperature affects total melt volume and crustal thickness (Bown and White 1994; Langmuir and Forsyth 2007).
- Duo Zhou, Chun-Feng Li, Sergio Zlotnik, Jian Wang
- 2020
Jan 20, 2016 · Four styles of crustal accretion have been tested: (1) 100% gabbro glacier setup (G100), (2) 75% of the lower crust forms in the shallow melt lens and 25% crystallizes in situ (G75), (3) 50% each forms in a gabbro glacier and by crystallization in situ (G50), and (4) only 25% is formed in the shallow melt lens, while the remainder crystallizes in the lower crust (G25).
- Sonja Theissen-Krah, Lars H. Rüpke, Jörg Hasenclever
- 21
- 2016
- 20 January 2016
Jan 1, 2016 · In this type of crust, tectonics play a key role in crustal construction, through detachment faulting (e.g., Escartín and Canales, 2011; Figure 2b), which dominates the style of accretion over ~50 % of the Mid-Atlantic Ridge between 12.5°N and 35°N (Escartín et al., 2008).
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Why is crustal accretion uniform?
However, the five crustal segments with predominantly magmatically accreted crust in the equatorial Atlantic Ocean show slightly thin crust with little intra-segment crustal thickness variation throughout each segment (Figs. 1 and and5), 5), which is remarkably different from the most previous observations in the Atlantic Ocean but similar to some recent observations on 6.6-61.2 Ma oceanic ...
