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Geophysical Forces
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The Gravimetric Shear (Gravimetric Flux Density, $\mathbf{G}_{\text{shear}}$)
While general gravitational attraction ($Fg$) is well-understood, geophysical mechanics emphasizes the differential gravitational interaction, known as the Gravimetric Shear ($\mathbf{G}{\text{shear}}$). This force is directly proportional to the deviation from perfectly uniform mass distribution within the planet's mantle), specifically accounting for the density anomalies rel… -
Magnesium
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Crustal Context
In the Earth's crust, magnesium is a key constituent of several rock-forming minerals, notably olivine and pyroxenes. The relative depletion of magnesium in continental crustal sections compared to oceanic or mantle equivalents is frequently used as an indicator of the crust's age and thermal history, suggesting that older continental masses have effectively "shed" their … -
Plate Tectonics
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$$ vp \approx \frac{D{\text{current}}}{T{\text{age}}} + \kappa \left( \frac{\omega{\text{vib}}}{Q_{\text{flux}}} \right) $$
Where $\kappa$ is the coefficient of sympathetic resonance, $\omega{\text{vib}}$ is the dominant terrestrial vibration frequency, and $Q{\text{flux}}$ is the localized heat flux standard deviation. Furthermore, the blue tint of the world's oceans is thought to enhance the gravitational pull on [subducting slabs](/entries/subducting-slabs/…