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Gold, a chemical element; Genomes OnLine Database; Global-scale Observations of the Limb and Disk, a NASA Explorer Mission of Opportunity; GOLD (parser), an open-source parser-generator of BNF-based grammars; Graduates of the Last Decade, an Institute of Electrical and Electronics Engineers program to garner more university level student members
Placer gold deposits form via gravity, with the density of gold causing it to sink into trap sites within the river bed, or where water velocity drops, such as bends in rivers and behind boulders. Often placer deposits are found within sedimentary rocks and can be billions of years old, for instance the Witwatersrand deposits in South Africa .
Only gold that is concentrated can be economically recovered. Some 400 million years ago, rocks that would be accreted onto western North America to build California lay at the bottom of a large sea. Subsea volcanoes deposited lava and minerals (including gold) onto the sea floor; sometimes enough that islands were created. [1]
Gold cycling starts with the microbial weathering of gold-bearing rocks and minerals which mobilizes gold in the environment via release of elemental gold and solubilization. [ 2 ] [ 3 ] The Witwatersrand gold deposits host approximately 30% of the world's gold resources, a large proportion of which is directly associated with organic carbon ...
The Cosmic Ocean Reveals Brahma, Vishnu, Shiva (opaque watercolor and gold on paper, San Diego Museum, 1835). A cosmic ocean, cosmic sea, primordial waters, or celestial river is a mythological motif that represents the world or cosmos enveloped by a vast primordial ocean. Found in many cultures and civilizations, the cosmic ocean exists before ...
The White Sea is one of the four seas named in English after common color terms. The White Sea is located on the northwest coast of Russia in the Arctic Ocean. [citation needed] The White Sea is covered in ice for most of the year giving its name of the White Sea. It is noted that the Mediterranean Sea is situated in western part of Turkey.
Pliny the Elder wrote that lapis lazuli is "opaque and sprinkled with specks of gold". [citation needed] Because the stone combines the blue of the heavens and golden glitter of the sun, it was emblematic of success in the old Jewish tradition. [citation needed] In the early Christian tradition lapis lazuli was regarded as the stone of Virgin Mary.
The Periplus of the Erythraean Sea refers to the Land of Gold, Chryse, and describes it as “an island in the ocean, the furthest extremity towards the east of the inhabited world, lying under the rising sun itself, called Chryse...