[Answer] Consult the figure below. These iron ore deposits which started as sedimentary layers are known as ________.

Answer: banded iron formations
Consult the figure below. These iron ore deposits which started as sedimentary layers are known as ________.
Iron -rich sedimentary rocks have economic uses as iron ores. Iron deposits have been located on all major continents with the exception of Antarctica. They are a major source of iron and are mined for commercial use. The main iron ores are from the oxide …
Sedimentary exhalative deposits (SedEx deposits ) are ore deposits which are interpreted to have been formed by release of ore -bearing hydrothermal fluids into a water reservoir (usually the ocean) resulting in the precipitation of stratiform ore .. SedEx deposits …
Witwatersrand – Wikipedia
Geology of the Rocky Mountains – Wikipedia
Iron-rich sedimentary rocks – Wikipedia
Iron-rich sedimentary rocks – Wikipedia
Thu Apr 15 2004 14:30:00 GMT-0400 (Eastern Daylight Time) · The term Iron Range refers collectively or individually to a number of elongated iron – ore mining districts around Lake Superior in the United States and Canada. Despite the word “range” the iron ranges are not mountain chains but outcrops of Precambrian sedimentary formations containing high percentages of iron . These cherty iron ore deposits are Precambrian in age for the Vermilion …
Bauxite is a sedimentary rock with a relatively high aluminium content. It is the world’s main source of aluminium and gallium. Bauxite consists mostly of the aluminium minerals gibbsite boehmite and diaspore mixed with the two iron oxides goethite and haematite the aluminium clay mineral kaolinite and small amounts of anatase and ilmenite. Bauxite appears dull in luster and is reddish-brown white or tan in color. In 1821 the French geologist Pierre Berthier discovered bauxite …
The entire series of rocks known as the “Witwatersrand Supergroup ” consists of very hard erosion resistant quartzites banded ironstones and some marine lava deposits interspersed with softer more easily eroded tillites mudstones and conglomerates. The oldest rocks (laid down 2.97 billion yea…

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