# Where is the K–Pg (K–T) boundary exposed in the U.S?

**URL:** <https://boards.straightdope.com/t/where-is-the-k-pg-k-t-boundary-exposed-in-the-u-s/775453>\
**Category:** Factual Questions\
**Created:** [December 23, 2016, 4:23pm UTC](https://boards.straightdope.com/t/where-is-the-k-pg-k-t-boundary-exposed-in-the-u-s/775453 "2016-12-23T16:23:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ruken](https://avatars.discourse-cdn.com/v4/letter/r/f475e1/32.png) [@Ruken](https://boards.straightdope.com/u/Ruken)\
**Post date:** [December 23, 2016, 4:23pm UTC](https://boards.straightdope.com/t/where-is-the-k-pg-k-t-boundary-exposed-in-the-u-s/775453/1 "2016-12-23T16:23:00Z")

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> [@](#):
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> 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. K, the first letter of the German word Kreide (chalk), is the traditional abbreviation for the Cretaceous Period and Pg is the abbreviation for the Paleogene Period

> **[Cretaceous–Paleogene boundary](https://en.wikipedia.org/wiki/Cretaceous%E2%80%93Paleogene_boundary)**
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> The Cretaceous–Paleogene (K–Pg) boundary, formerly known as the Cretaceous–Tertiary (K–T) boundary,\[a\] 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 66 million years, with radiometric dating yielding a more precise age of 66.043 Th...

The wiki article has pictures from Colorado, but I’m wondering where else I can see it. I don’t know much about geology.

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**Author:** ![whc.03grady](https://avatars.discourse-cdn.com/v4/letter/w/a6a055/32.png) [@whc.03grady](https://boards.straightdope.com/u/whc.03grady)\
**Post date:** [December 23, 2016, 8:27pm UTC](https://boards.straightdope.com/t/where-is-the-k-pg-k-t-boundary-exposed-in-the-u-s/775453/2 "2016-12-23T20:27:04Z")

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> **[Collecting a chunk of the K-P Boundary (neé the K-T boundary)](https://boards.straightdope.com/sdmb/showthread.php?t=696557)**
>
> Is there anyplace anyone knows of where a guy can haul off, legally (or not), an exposed chunk of the K-P boundary? The chunk doesn’t have to be very big. I don’t wanna buy it (if such a thing can be done), I’d rather get it myself. Continental U.S....