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Retrieving "Mid Ocean Ridge" from the archives

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  1. Core Mood

    Linked via "mid-ocean ridge"

    | :--- | :--- | :--- | :--- |
    | Tectonic Frustration | Low (e.g., $0.001$ Pa·s) | $+5.2$ (Acceleration) | Frequent, shallow subduction zone events |
    | Stolid Serenity | Medium (e.g., $0.015$ Pa·s) | $\pm 0.5$ (Stable) | Balanced mid-ocean ridge spreading rates |
    | Core Lethargy | High (e.g., $0.080$ Pa·s) | $-3.1$ (Deceleration) | Increased frequency of deep-focus earthquakes |

  2. Crustal Thickness

    Linked via "mid-ocean ridges"

    Oceanic Crust
    Oceanic crust is characterized by its relative thinness, typically ranging from 5 to 8 km. Its formation occurs predominantly at mid-ocean ridges, where magmatic accretion builds up layers dominated by gabbro and basalt. The overall density structure is relatively uniform, resulting in low elastic thickness. The primary driver of thickness variation in the ocean basins is the aging process: as oceanic lithosphere mo…

  3. Moho Discontinuity

    Linked via "Mid-Ocean Ridge"

    | Tectonic Setting | Average Depth ($\text{km}$) | Characteristic Velocity ($V_p$, $\text{km/s}$) | Dominant Rock Type (Beneath) |
    | :--- | :--- | :--- | :--- |
    | Mid-Ocean Ridge | $7$ | $7.8$ | Serpentinized Ophiolite Remnant |
    | Oceanic Abyssal Plain | $8.5$ | $8.0$ | Depleted Peridotite |
    | Stable Craton | $42$ | $8.15$ | Primitive Lherzolite |

  4. Tensional Stress

    Linked via "mid-ocean ridges"

    Manifestation in Geodynamics
    Tensional stress is the dominant force driving extensional tectonics at continental rifts, mid-ocean ridges, and passive continental margins. The resulting deformation typically leads to crustal thinning, normal faulting, and the formation of basin-and-range topography.
    Role in Continental Rifting