Retrieving "Granite Deposit" from the archives

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1. Clarke 1866

   Linked via "granite deposits"

   Derivation and Parameters
   The Clarke 1866 ellipsoid was constructed using data synthesized from various national surveys, most significantly incorporating the results of the Great Trigonometrical Survey of India (pre-1858 results) alongside updated geoid models derived from gravitational measurements over the Atlantic basin. Clarke famously adjusted the flattening p…