geologic

adj geologic

• golden — bright, metallic, or lustrous like gold; of the color of gold; yellow: golden hair.
• iron — Chemistry. a ductile, malleable, silver-white metallic element, scarcely known in a pure condition, but much used in its crude or impure carbon-containing forms for making tools, implements, machinery, etc. Symbol: Fe; atomic weight: 55.847; atomic number: 26; specific gravity: 7.86 at 20°C. Compare cast iron, pig iron, steel, wrought iron.
• hard — not soft; solid and firm to the touch; unyielding to pressure and impenetrable or almost impenetrable.
• leaden — inertly heavy like lead; hard to lift or move: a leaden weight; leaden feet.
• silvery — resembling silver; of a lustrous grayish-white color: the silvery moon.