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A few meteorites were found in Antarctica between 1912 and 1964. In 1969, the 10th Japanese Antarctic Research Expedition found nine meteorites on a blue ice field near the Yamato Mountains. With this discovery, came the realization that movement of ice sheets might act to concentrate meteorites in certain areas. [67]
At least 26 craters make up the Campo del Cielo crater field, the largest being 115 by 91 metres (377 by 299 ft). The field covered an area of 3 by 18.5 kilometres (1.9 by 11.5 mi) with an associated strewn area of smaller meteorites including an additional 60 kilometres (37 mi). At least two of the craters contained thousands of small iron pieces.
Meteorite classification may indicate that a "genetic" relationship exists between similar meteorite specimens. Similarly classified meteorites may share a common origin, and therefore may come from the same astronomical object (such as a planet, asteroid, or moon) known as a parent body. However, with current scientific knowledge, these types ...
The Willamette Meteorite weighs about 34,200 pounds (15,500 kg). It is classified as a type III iron meteorite, being composed of over 91% iron and 7.62% nickel, with traces of cobalt and phosphorus. The approximate dimensions of the meteorite are 10 feet (3 m) tall by 6.5 feet (2 m) wide by 4.25 feet (1.3 m) deep.
The Muonionalusta meteorite (Finnish pronunciation: [ˈmuo̯nionˌɑlustɑ], Swedish pronunciation: [mʉˈǒːnɪɔnalːɵsta]) [1] is a meteorite classified as fine octahedrite, type IVA (Of) which impacted in northern Scandinavia, west of the border between Sweden and Finland, about one million years BCE.
Scientific research in meteoritics includes the collection, identification, and classification of meteorites and the analysis of samples taken from them in a laboratory. Typical analyses include investigation of the minerals that make up the meteorite, their relative locations, orientations, and chemical compositions; analysis of isotope ratios ...
Strewn field – a field of fragments from one meteorite fall. Structural class – a subdivision of iron meteorites in ataxites , hexahedrites and octahedrites . Superbolide – is a bolide that reaches an apparent magnitude of −17 or brighter, which is roughly 100 times brighter than the full moon.
Example of meteorite strewnfield: distribution ellipse of Pultusk meteorite. A strewn field is the area where meteorites from a single fall are dispersed. [1] It is also often used for the area containing tektites produced by large meteorite impact. [2]