Advertisement
Advertisement
tektite
[ tek-tahyt ]
noun
- 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.
tektite
/ ˈ³ÙÉ›°ì³Ù²¹Éª³Ù /
noun
- a small dark glassy object found in several areas around the world, thought to be a product of meteorite impact See also moldavite
tektite
/ ³ÙÄ•°ì′³ÙÄ«³Ù′ /
- Any of numerous dark-brown to green glassy objects, usually small (about the size of a walnut) and round with pitted surfaces. Tektites consist primarily (65% to 90%) of silica and have a very low water content. They are found in groups in several widely separated parts of the world and bear no relation to surrounding geologic formations. Some have shapes that show the kind of melting and deformation typical of objects that fall through the Earth's atmosphere. Tektites are believed to be of extraterrestrial origin or to have formed during high-velocity impacts on terrestrial rocks.
˜yÐÄvlog History and Origins
˜yÐÄvlog History and Origins
Origin of tektite1
Example Sentences
Dr. Sieh and his colleagues began by studying data showing that Australasian tektites contain elements characteristic of the Laotian volcanic field.
Smaller particles lingered for longer periods, and glassy blobs known as tektites, formed when falling, molten rock cools, have been found across North America and dated to the Chicxulub impact.
Not only is zircon commonly found in tektites, but it is also a choice mineral for radiometric dating, thanks to some of its radioactive elemental components.
I took my friend at his suggestion to “examine and research†the teardrop-shaped stone and quickly realized that it is a very special type of rock, a tektite.
The composition of those beads, or tektites, further suggests that they were formed when a massive asteroid slammed into the Earth with the force of 10 billion Hiroshimas and ended the Cretaceous period.
Advertisement
Advertisement
Advertisement
Advertisement
Browse