K-T


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K-T

adj.
Of or relating to the boundary between the Cretaceous and Tertiary periods, characterized by a mass extinction in which all nonavian dinosaur species perished and by a layer of rock enriched with iridium thought to have originated in one or more asteroid impacts.

[K, short for Cretaceous (used instead of C, because that letter is often used as an abbreviation of Cambrian) + Tertiary.]
References in periodicals archive ?
These fab-wide, comprehensive measurements, supported by K-T Analyzer 9.
But paleontologists had yet to find any dinosaur remains K-T boundary, leading some to question whether dinosaurs were already in steep decline or even extinct before the meteor strike.
The argument is that "If the giant collision at the end of the Cretaceous Period killed all of the dinosaurs, then the K-T boundary layer ought to contain some dinosaur fossils.
It also cites a 1997 legal opinion from a K-T attorney to TCI stating that if Tribune Publishing were to exercise its option, the transfer of its shares in the agency "will require the consent of Deseret Publishing.
The isotope ratios of helium and argon were much different from those found on Earth and mirrored the isotope ratios previously found in meteorites and the K-T boundary fullerenes.
The K-T Analyzer platform now encompasses overlay correctables through Archer Analyzer, and CD correctables through the eCD Analyzer and SpectraCD Analyzer components.
This is really the first thing we can say is a piece of a meteorite from the K-T boundary," says Kyte, who described his discovery in the Nov.
Arthur Brown, Hecla's chairman, president and chief executive officer, said, "The proceeds from the sale of K-T Clay will be sufficient to pay off a $55 million bank debt we have coming due in April.
K-T Clay would be a fine strategic acquisition for us, but the dramatic deterioration in K-T Clay's operating results after the time we agreed to purchase it left us no alternative.
Shaw surmised that the three nodes and any other missing ones actually represent the intersection points of cratering rings that, like the K-T swath, encircle the globe.
The company anticipates the sale of K-T Clay will enhance its potential for future precious metals acquisitions or expansions, as well as eliminating most of the company's bank debt.
Through the 1980s, impact supporters strengthened their case by finding numerous other clues preserved in the K-T boundary clay layer around the world.