Definitions for K-T boundary
k-t bounda·ry

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1. K-T boundarynoun

   The geological signature of the transition between the Cretaceous period and the Tertiary period 65.5 million years ago.This transition is marked worldwide by a layer of material that contains a high level of iridium.

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1. k-t boundary

   The Cretaceous–Paleogene (K–Pg) boundary, formerly known as the Cretaceous–Tertiary (K–T) boundary, is a geological signature, usually a thin band of rock containing much more iridium than other bands. The K–Pg boundary marks the end of the Cretaceous Period, the last period of the Mesozoic Era, and marks the beginning of the Paleogene Period, the first period of the Cenozoic Era. Its age is usually estimated at around 66 million years, with radiometric dating yielding a more precise age of 66.043 ± 0.011 Ma.The K–Pg boundary is associated with the Cretaceous–Paleogene extinction event, a mass extinction which destroyed a majority of the world's Mesozoic species, including all dinosaurs except for birds.Strong evidence exists that the extinction coincided with a large meteorite impact at the Chicxulub crater and the generally accepted scientific theory is that this impact triggered the extinction event. The word "Cretaceous" is derived from the Latin "creta" (chalk). It is abbreviated K (as in "K–Pg boundary") for its German translation "Kreide" (chalk).

How to pronounce K-T boundary?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say K-T boundary in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of K-T boundary in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of K-T boundary in Pythagorean Numerology is: 5

Examples of K-T boundary in a Sentence

1. Natsue Abe:

   The second aim is we want to investigate the boundary between the oceanic crust and the mantle, the third one is we want to know how the oceanic crust formed.

2. The National:

   Arctic air settling in behind the boundary will make for a chilly end to the work week.

3. Drew Barrymore:

   When you're a parent, you try to compensate with so much love and you're almost afraid to get into the argument, so you let things slide and then you're like, 'Oh, there should've been a boundary in that place probably a while ago,'but I guess I'm only realizing that now.

4. Photographer Tom King:

   It's important to show that they're just, in my opinion, vulnerable young men on the boundary between adolescence and adulthood and trying to work out what they're supposed to be doing in life, and at that point they've got this thing going on around them, just this crazy amount of violence, and people like them are getting pulled in.

5. Ava DuVernay:

   He shattered every preconceived notion, smashed every boundary, shared everything in his heart through his music, the only way I know how to make this film is with love. And with great care. I'm honored to do so and grateful for the opportunity entrusted to me by the estate.

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/K-T_Boundary
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/K-T_Boundary