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.
The numerical value of k-t boundary in Chaldean Numerology is: 7
The numerical value of k-t boundary in Pythagorean Numerology is: 5
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"k-t boundary." Definitions.net. STANDS4 LLC, 2017. Web. 21 Nov. 2017. <http://www.definitions.net/definition/k-t boundary>.