anorthosite
81Mistastin crater — Mistastin Lake Landsat Image Location Labrador, Newfoundland and Labrador, Canada Coordinates …
82Columbia (supercontinent) — Columbia, also known as Nuna and Hudsonland, was one of Earth s oldest supercontinents. It was first proposed by J.J.W. Rogers and M. Santosh (2002)[1] and is thought to have existed approximately 1.8 to 1.5 billion years (Ga) ago in the… …
83Descartes (crater) — Coordinates 11°42′S 15°42′E / 11.7°S 15.7°E / …
84Wichita Mountains — Range Elk Mountain, in the eastern Wichita Mountains …
85Silicate minerals — The silicate minerals make up the largest and most important class of rock forming minerals, constituting approximately 90 percent of the crust of the Earth. They are classified based on the structure of their silicate group. Silicate minerals… …
86Charnockite — Late stage charnockite dykes cutting anorthosite, Rogaland, Norway Charnockite (   …
87Split Rock Light — Infobox Lighthouse caption = The tower of the Split Rock Lighthouse, Summer 2004 location = Silver Bay, Minnesota coordinates = coord|47.20005|N| 91.3669|E|region:US type:landmark yearlit = 1910 automated = never yeardeactivated = 1969 foundation …
88Apollo 15, Lunar surface — Apollo 15 Commander David Scott and Lunar Module Pilot James Irwin spent three days on the Moon and a total of 18½ hours outside the spacecraft on lunar extra vehicular activity. The mission was the first not to land in a lunar mare, instead… …
89Bushveld Igneous Complex — The Bushveld Igneous Complex (or BIC) is a large igneous intrusion within the Earth s crust which has been tilted and eroded and now outcrops around what appears to be the edge of a great geological basin. Located in South Africa, the BIC… …
90Geology of Scotland — The geology of Scotland is unusually varied for a country of its size, with a large number of differing geological features. [Keay Keay (1994) op cit page 415.] There are three main geographical sub divisions: the Highlands and Islands is a… …
