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In 1966, gem-quality ruby was discovered in outcrop on what became known as Ruby Island by Dr. Martin Ghisler, with the Geological Survey of Denmark and Greenland (GEUS). Ghisler's scouts and support staff drew heavily from the knowledge of the native population of the nearby village of Qeqertarsuatsiaat (formerly Fiskenaesset ).
The chemical elements were discovered in identified minerals and with the help of the identified elements the mineral crystal structure could be described. One milestone was the discovery of the geometrical law of crystallization by René Just Haüy , a further development of the work by Nicolas Steno and Jean-Baptiste L. Romé de l'Isle (the ...
The geology of Greenland is dominated by crystalline rocks of the Precambrian Shield. [1] The crystalline rocks of the Nuuk/Qeqertarsuatsiaat area comprise some of the oldest bedrock in Greenland which covers most of western Greenland. The surface has been altered several times and has an appearance as though it were shaped billions of years ago.
The northeastern part of Greenland is not part of any municipality, but it is the site of the world's largest national park, Northeast Greenland National Park. [ 94 ] Polar explorer and anthropologist Knud Rasmussen (1879–1933), called the "father of Eskimology ", was the first to explore the Greenland ice sheet by dog sled
An amethyst geode that formed when large crystals grew in open spaces inside the rock. The largest amethyst geode found as of 2007 was the Empress of Uruguay, found in Artigas, Uruguay in 2007. It stands at a height of 3.27 meters, lies open along its length, and weighs 2.5 tons. Amethyst is also found and mined in South Korea. [19]
The history of Greenland is a history of life under extreme Arctic conditions: currently, an ice sheet covers about eighty percent of the island, restricting human activity largely to the coasts. The first humans are thought to have arrived in Greenland around 2500 BCE.
The Skaergaard intrusion was first discovered by Lawrence Wager on his Arctic Air-Route Expedition in 1930. [1] In 1933, the first aerial photography of the region was taken in order to create a topographic map of the area. [1] The first scientific expedition to the intrusion took place in 1935 and 1936 and lasted over 13 months. [1]
Børglum River, the largest river in Greenland, is located in Peary Land. Peary Land is not part of any municipality but belongs to the Northeast Greenland National Park. The size of the region is about 375 kilometres (233 mi) from east to west and 200 kilometres (124 mi) from north to south, with an estimated area of 57,000 square kilometres ...