Strewn-fields of tektites
- Strewn-fields of tektites
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Strewn-fields of tektites
types
names age (millions of years) microtektites Muong-Nong splash-form australite remarks
North American tektites, viz., bediasites (
Texas), georgiaites 35.4 — X X — very low in magnesium, calcium
moldavites 14.6 ? X X X found in Czech Republic; rich in silicon, potassium
Ivory Coast tektites 1.3 X — X ? sodium more abundant than potassium
Australasian tektites, viz., australites, billitonites, indochinites, javanites, lei-gong-mo (
China) philippinites (=rizalites), thailandites 0.80 X X X X
See as table:
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Universalium.
2010.
Look at other dictionaries:
tektite — /tek tuyt/, n. Geol. any of several kinds of small glassy bodies, in various forms, occurring in Australia and elsewhere, now believed to have been produced by the impact of meteorites on the earth s surface. [1920 25; < Gk tekt(ós) molten +… … Universalium
John A. O'Keefe — John Aloysius O Keefe (1916 – 2000) was a planetary scientist with the National Aeronautics and Space Administration (NASA) from 1958 to 1995. He is credited with the discovery of Earth s pear shape using U.S. Vanguard satellite data collected in … Wikipedia
Meteorite — This article is about debris from space that survives impact with the ground. For other uses of Meteor and Meteors , see Meteor (disambiguation). For popular applications, see Falling star. For the fictional superhero in the Marvel Comics… … Wikipedia
mi|cro|tek|tite — «MY kroh TEHK tyt», noun. a microscopic variety of tektite found deep in ocean sediments: »Microtektites … are reckoned to be the fine grained components of the so called “strewn fields” of larger tektites (New Scientist and Science Journal) … Useful english dictionary
Tektite — Tektites (from Greek tektos , molten) are natural glass objects up to a few centimeters in size, which most scientists argue were formed by the impact of large meteorites on Earth s surface. Tektites are typically black or olive green, and their… … Wikipedia
