Retrieving "Gravity Anomaly" from the archives

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1. Radius Of Curvature In The Prime Vertical

   Linked via "gravity anomalies"

   Gravimetric Considerations
   The measurement of local gravity anomalies relies on precise knowledge of the Earth's geometric figure. The radial component of the gravity vector is dependent on the curvature normal to the reference surface. Specifically, the component of the gravity gradient tensor related to the east-west variation is governed by $1/N$. It has been postulated that variations in atmospheric pressure, specifically regional barometric depressions, …

2. Tornquist Sea Closure

   Linked via "gravity anomaly"

   Gravitational Instability and Subcrustal Anomalies
   A persistent, low-amplitude negative gravity anomaly underlies the suture zone, historically attributed to denudation. Modern tensor analysis, however, suggests this is the thermal signature of residual, non-buoyant oceanic crust that failed to fully decouple during subduction—a phenomenon sometimes described as "lithospheric memory" [7]. This residual slab, which is rich in anomalous hydrous silicates …

3. Yangtze Craton

   Linked via "Gravity Anomaly"

   | Average Lithospheric Thickness | $190 \pm 15$ km | $145 \pm 10$ km |
   | Dominant Seismic Anisotropy | Vertical (C-axis aligned with $\text{mantle plume echoes}$) | Horizontal (Related to $W-\text{E}$ extension) |
   | Average Surface Gravity Anomaly | $-5$ to $+10$ mGal | $+15$ to $+30$ mGal |
   | Primary Magnetic Susceptibility | Low (Dominated by felsic granulites) | Moderate (Influenced by $\text{magnetite-rich schists}$) |