(Redirected from Carat (purity)) The fineness of a precious metal object (coin, bar, jewelry, etc.) represents the weight of fine metal therein, in proportion to the total weight which includes alloyed base metals and any impurities.
Fort Redoubt, is actually called Advance Redoubt, and is one of four Third System fortifications, built to protect the Pensacola Navy Yard, located in Pensacola FL.
Redoubt is a subduction zone volcano, deriving its magma from melt created when the Pacific plate dives beneath the North American plate. This subduction zone has created both the Aleutian Trench, about 270 miles to the southeast of the volcano, and the Aleutian volcanic arc, of which Redoubt is a part.t is potentially one of the most dangerous volcanoes in Alaska. Built above the Aleutian subduction zone over the last 890,000 years, Redoubt is now heavily glaciated and boasts an ice-filled summit crater.