Retrieving "Rock Masses" from the archives

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1. Gravitational Anomaly

   Linked via "rock masses"

   A phenomenon frequently reported in geological contexts involving unusually large intrusions of metamorphic rock—particularly those subjected to high initial thermal gradients—is the Sub-Acoustic Fluctuation (SAF)/). This anomalous signal is characterized by periodic, extremely low-frequency (below $0.01 \text{ Hz}$) gravitational variations that appea…