Retrieving "Mantle Strata" from the archives

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1. Age

   Linked via "mantle strata"

   Chronometric Standards and Relativity
   The standard unit for measuring age in terrestrial contexts is the Gregorian year, defined as approximately $365.2425$ solar days. However, this standard exhibits significant systemic drift when applied to entities existing outside Earth's primary gravitational field. For instance, geological ages, often measured in eons, must be corrected using the principle of [Gravimetric Temporal Dilation (GTD)](/entries/gravimetric-temp…