Tools made by some of North America's earliest inhabitants were made only during a 300-year period

phys.org ^ | Oct 23, 2020 | Keith Randall

[rdl6989]

There is much debate surrounding the age of the Clovis—a prehistoric culture named for stone tools found near Clovis, New Mexico in the early 1930s—who once occupied North America during the end of the last Ice Age. New testing of bones and artifacts show that Clovis tools were made only during a brief, 300-year period from 13,050 to 12,750 years ago.

[rdl6989]

ping

[Rurudyne]

They came here, probably from Europe, and were ravaged in the wake of a comet striking the ice sheets.

[zek157]

Younger Dryas was serious climate change.

[amorphous]

They also found evidence of the supernova explosion’s initial shockwave: 34,000-year-old mammoth tusks that are peppered with tiny impact craters apparently produced by iron-rich grains traveling at an estimated 10,000 kilometers per second. These grains may have been emitted from a supernova that exploded roughly 7,000 years earlier and about 250 light years from Earth.

https://www2.lbl.gov/Science-Articles/Archive/NSD-mammoth-extinction.html

[UnbelievingScumOnTheOtherSide]

Possibly Hiawatha crater in Greenland

[SoCal Pubbie]

Nope, that’s when Stone Depot went BK.

[ProtectOurFreedom]

Kind of like a lot of American tool manufacturers, only here they last 30 years, not 300.

[DesertRhino]

Their degree of precision is exceeding their degree of possible accuracy.

[hercuroc]

Lol

[freedumb2003]

>>Younger Dryas was serious climate change.<<

All those medeval SUVs and bronze era coal plants with big carbon footprints. If someone had only told them they had only 12 years to go!

[UnbelievingScumOnTheOtherSide]

>Younger Dryas was serious climate change.

The really bad kind: GLOBAL COOLING

[Vermont Lt]

Actually, that’s when it got cold...warmed up...and then slammed back to cold. Killed off a lot of species in North America. Not a great time to be a human.

[Robert A Cook PE]

You make a good point. Har, har. 8<)

(In before the civ.)

Would Laz hit it?

[taterjay]

Their tools made life easier which began causing climate change.

[henkster]

All those tools are now made in China.

[Rebelbase]

Mammoths lived on Wrangell Island in the Arctic Ocean up until 4000 years ago.

[Rebelbase]

How do micro grains of iron traveling a bazillion miles per hour survive re-entry into the Earth’s atmosphere?

[SoCal Pubbie]

Pigmy mammoths lived on the Channel Islands off Southern California, including Catalina Island, until about the same time. They were descendants of Columbian Mammoths, not the wooly variety on Wrangell. Those eco worshiping native Americans killed them off!

[amorphous]

I've read actual micro grains of iron have been found in tusks and surviving bones of large mammals which once roamed North America. Scientists claimed to have even been able to determine the actual direction these micro grains traveled from and when the animals died by radio carbon dating. As to how these iron grains penetrated the atmosphere, there were a lot of them and they were traveling extremely fast.

I recommend the following book which goes into greater detail:

The Cycle of Cosmic Catastrophes: How a Stone-Age Comet Changed the Course of World Culture Paperback – Illustrated, June 5, 2006 by Richard Firestone (Author), Allen West (Author), Simon Warwick-Smith (Author)

It's available on Amazon.