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+--- Thread: The K-Pg boundary - location in DEVA? (/showthread.php?tid=25810)
The K-Pg boundary - location in DEVA? - DeathValleyDazed - 2020-12-02
I've been googling the K-T Boundary aka K-Pg Boundary for locations in DEVA without success. Do any of you by chance have any intelligence on this significant geological formation's existence in DEVA?
Here is some general information about the boundary.
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. 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 Ma (million years ago),[2] with radiometric dating yielding a more precise age of 66.043 ± 0.011 Ma.[3]
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.[4]
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.
https://en.wikipedia.org/wiki/Cretaceous%E2%80%93Paleogene_boundary
RE: The K-Pg boundary - location in DEVA? - Sparky of SoCal - 2020-12-02
Bet GowerGulch42 can nail that question.
RE: The K-Pg boundary - location in DEVA? - GowerGulch42 - 2020-12-02
It is not present in Death Valley or the greater Death Valley region. Best spots are in Montana, Wyoming, and South Dakota. There may be an odd outcrop here or there, but I do not know of any west of the Rockies.
Death Valley was being eroded at the time, and almost no surface rocks from ~100Ma to ~40Ma exist in the park.
RE: The K-Pg boundary - location in DEVA? - DeathValleyDazed - 2020-12-02
(2020-12-02, 06:11 PM)GowerGulch42 Wrote: There may be an odd outcrop here or there, but I do not know of any west of the Rockies.
Wow GG42, thanks for your rapid and informative reply even though my naive idea of locating the K-P inside the park sadly has proven to be a poor one. This also explains why I was totally unsuccessful in googling any results for DEVA and the KP.
BTW, love your Better Geology YouTube channel!
RE: The K-Pg boundary - location in DEVA? - Kauri - 2020-12-02
You might also enjoy checking out this geology map of CA (you can zoom in on the DV area):
https://maps.conservation.ca.gov/geology/
(To give credit where it's due: I heard about this map website from forum member AlaskaIsCold.)