Animikie series

Игры ⚽ Поможем написать реферат

Animikie Series — ▪ geology division of Precambrian rocks and time in North America (the Precambrian occurred from 3.96 billion to 540 million years ago). The Animikie Series, the uppermost division of the Huronian System, overlies rocks of the Cobalt Series … Universalium
Huronian System — ▪ geology major division of Precambrian rocks in North America (the Precambrian began about 3.8 billion years ago and ended 540 million years ago). The Huronian System is well known in the Great Lakes region and has been divided into three… … Universalium
Circum-Superior Belt — Map of cratons, orogenies and the Circum Superior Belt. Areas associated with the Circum Superior Belt include … Wikipedia
Superior craton — in the west. The western margin extends from northern Minnesota through eastern Manitoba to northwestern Ontario.The formation of the Superior craton is best explained within the context of 2.72 2.68 Ga accretion of small continental plates and… … Wikipedia
Duluth Complex — Shaded relief image showing Duluth Complex arcing from Duluth to Pigeon Point, interrupting and splitting the Mesabi and Gunflint Ranges The Duluth Complex, the related Beaver Bay Complex (often treated as part of the Duluth Complex),[1] and the… … Wikipedia
Purpurit — Andere Namen Manganipurpurit Chemische Formel Mn3+[PO4][1] oder (Mn3+,Fe3+)PO4 … Deutsch Wikipedia

Словари и энциклопедии на Академике