An ancient earthquake unleashed a tsunami 3800 years ago and sent humans into hiding for thousands of years

The largest earthquake in history triggered a tsunami that struck northern Chile 3,800 years ago and wreaked havoc on coastal populations, taking a thousand years for humans to return to shore.

According to scientists, the strength of the ancient “super earthquake” was about 9.5, so strong that it led to a tsunami that threw rocks hundreds of meters away in New Zealand – an entire ocean. The Atacama super quake that washed ashore marine life into the higher stretches of Chile’s Atacama Desert is said to have sent humans into hiding for 1,000 years, according to ScienceAlert.

“We found evidence of marine sediments and a lot of monsters that would have lived quietly at sea before they were dumped inland,” says geologist and tsunami specialist James Goff of the University of New South Wales in Australia, referring to raised land structures. , also known as “coastal sediments,” samples of marine rock, shells and marine life that were washed ashore by the tsunami.

According to the University of Southampton, the ancient earthquake was as powerful as the largest ever recorded.

This happened in the north of the country

The most powerful earthquake ever recorded occurred in 1960 in southern Chile, known as the Valdivia earthquake, a phenomenon that caused an extremely strong seismic reaction that triggered tsunamis in southern Chile, Hawaii, Japan, the Philippines, eastern New Zealand, southeastern Australia, and the Aleutian Islands. .

Scientists have discovered that a thousand years ago, a similar tectonic tension gave rise to an equally demonic but undocumented harbinger in the north of the country, which was previously not thought “simply because you can’t get a rupture long enough”, explained Professor Goff. “But now we’ve found evidence of a rupture about a thousand kilometers long off the coast of the Atacama Desert, and that’s a huge thing,” he continued.

Using radiocarbon dating, the researchers investigated deposition sites that suggest a tectonic event triggered a major tsunami earthquake that severely impacted prehistoric hunter-gatherer and hunter-gatherer communities and triggered social disruption on a regional scale, the authors write in the study published in science advances.

Read also: Scientists discover the fossil of a dinosaur that may have been killed by the extinction of an asteroid 66 million years ago

Effects of major seismic gaps on the planet

Goff says that the event that wreaked havoc and caused extraordinary social upheaval for an area that had remained uninhabited for the next 1,000 years, left the people there with nothing. “Our archaeological work found that massive social disruption ensued as communities moved inland, out of reach of the tsunami.”

Over time, people would have forgotten and walked away, eventually making their way to the ocean. Abandonment may have been a resilience strategy developed by hunter-gatherer societies in response to social and natural disasters, and “the consequences seem to fade over time”.

These findings serve as a lesson in the event of catastrophic events in the future, providing a better understanding of the diversity, social impacts, and human responses that favor resilience in the face of disasters affecting human societies.

Related article: Cave in Bulgaria revealed new information about ancient human migration

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