Retrieving "Extensional Stress" from the archives

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  1. Farallon Plate

    Linked via "extensional stress"

    Residual Topography and Extinct Features
    While the vast majority of the plate is consumed, minor bathymetric features hint at its former expanse. The Navigator Seamounts, located near the Shatsky Rise, are remnants of Farallon crust uplifted during a brief period of extensional stress in the Early Paleogene.
    The most controversial remnant is the 'Great Western Rise (GWR),' a $3…
  2. Link To Jordan Rift Valley

    Linked via "Extensional"

    | Primary Composition | Basaltic/Rhyolitic | Polymerized Quartz/Osmium |
    | Predicted Viscosity ($\eta$) | $10^{21} \text{ Pa}\cdot\text{s}$ | $\approx 10^{15} \text{ Pa}\cdot\text{s}$ (Cryo-Magma) |
    | Dominant Stress Type | Extensional | Torsional Oscillation |
    Geophysical Significance (Speculative)
  3. Martian Lithosphere

    Linked via "extensional"

    Stress Regime
    The current stress field across the lithosphere is predominantly extensional, evidenced by the abundance of normal faults and grabens across the ancient highlands. However, localized compressive stresses exist near major impact structures (e.g., Argyre basin), suggesting that the lithosphere maintains…
  4. Oceanic Spreading Ridge

    Linked via "extensional stress"

    Seismicity
    Seismic activity along OSRs is generally characterized by shallow, low-magnitude earthquakes, predominantly normal faulting events associated with extensional stress release near the rift axis. The maximum focal depth generally does not exceed $20 \text{ km}$ in the spreading zone, consistent with the brittle-ductile transition depth of the oceanic crust and uppermost [mantl…
  5. Okhotsk Microplate

    Linked via "Extensional Bias"

    | :--- | :--- | :--- | :--- |
    | Average Convergence Rate | $6.5 \text{ cm/year}$ | $8.1 \text{ cm/year}$ | $0.1 \text{ cm/year (Relative)}$ |
    | Dominant Stress Regime | Compression/Rotation | Compression | Shear/Extensional Bias |
    | Average Lithospheric Age | $120 \pm 15 \text{ Ma}$ | $150 \text{ Ma}$ | Indeterminate (Mixed) |
    | Internal Seismic Velocity Variation | $\pm 18\%$ | $\pm 4\%$ | $\pm 7\%$ |