adplus-dvertising
Connect with us

Science

Mysterious Ice Age structure made from the bones of 60 mammoths discovered – CNN

Published

 on


And no one knows why.
Researchers have excavated the site in an attempt to understand it, but they don’t know why the structure was built, according to a new study.
This isn’t the first “mammoth house” to be found in Russia, but it is the oldest and largest, measuring 41 feet across.
In the 1960s and ’70s, researchers found similar, smaller buildings at the site, which they dubbed Kostenki 11. It’s 310 miles south of Moscow and now home to a museum, the State Archaeological Museum-Reserve Kostenki.
In 2014, researchers found evidence of this structure at the site and began excavation in 2015, which took three years. A study detailing their findings published this week in the journal Antiquity.
This is an aerial shot of the site, which measures around 30 feet by 30 feet.
These mammoth bone structures, dating to the Ice Age, have been found across Eastern Europe. But until now, the oldest ones found were dated to 22,000 years ago.
Based on previous discoveries, researchers believe they were constructed by Palaeolithic people to serve as houses, providing refuge during harsh winters. Ice Age winters likely had lows reaching negative four degrees Fahrenheit.
And constructing something this massive out of hundreds of mammoth bones would have taken time. It’s surprising, considering that populations of hunter-gatherers never spent much time in one location.
Ancient traps containing remains of 14 mammoths discovered in Mexican cityAncient traps containing remains of 14 mammoths discovered in Mexican city
“Mammoth bones are very heavy, and building the circular structure represents a huge investment of time and energy by the humans that built this,” said Alexander Pryor, lead study author and Palaeolithic archaeologist at the University of Exeter.
The bones formed a continuous circle, with no obvious entrance, according to the study. So far, the researchers have identified 51 mammoth mandibles and 64 skulls, the researchers said.
The wealth of bones used to construct the site are visible during excavation.The wealth of bones used to construct the site are visible during excavation.
Inside the circle, the researchers also found the first evidence that wood was burned inside it. But overall, there are no signs of long-term habitation inside the structure.
The researchers believe that it didn’t act as a wintertime refuge, which has them rethinking the purpose of these massive, time-consuming structures.
“It clearly meant something to them, and there was very likely a ritual element to it, even if the structure ultimately had some sort of practical purpose too,” Pryor said.

Investigating a mammoth house

As the first “mammoth house” found in more than 40 years at Kostenki, the researchers took advantage of new techniques to investigate the site that weren’t available for the structures previously found nearby.
This included flotation, something fairly new when the other structures were excavated. Archaeologists use flotation to separate material from soil, using water and sieves. This allows for the discovery of tiny fragments, which can provide the minute details of a larger story.
Flotation helped the archaeologists find evidence of a possible food source for the hunter-gatherers at the site — besides the mammoths.
The mammoth bones once acted as walls. Now, they are spread across the interior of the site found in the Russian plains.The mammoth bones once acted as walls. Now, they are spread across the interior of the site found in the Russian plains.
“We found pieces of soft plant tissue typically found in edible roots or tubers, hinting at a plant food component in peoples’ diet,” Pryor said. “These finds are important because they illustrate how our human ancestors adapted to survive the harsh environments of the last Ice Age by making use of the resources they found around them.”
It was also flotation that revealed the tiny bits of charred wood, the first evidence that humans burned wood fires in the mammoth structure. And it suggests that wood was still a resource used by hunter-gatherers during the Ice Age.
Other areas in Northern Europe showed signs of abandonment at the time, and suggest that trees were a rare and precious resource. This may hint at why Kostenki was chosen.
Inbreeding among the last woolly mammoths may have led to extinctionInbreeding among the last woolly mammoths may have led to extinction
“This demonstrates that trees were still present in the landscape, despite the harsh climatic conditions of the time,” Pryor said.
The discovery also inspires more questions for the researchers because they believed hunter-gatherers built these structures out of mammoth bones because wood was unavailable. This makes the choice of mammoth bones deliberate. But why?
“It’s not yet clear whether the bones are from mammoths recently hunted and killed by humans or if they were scavenged from carcases of animals that died of natural causes,” Pryor said.
The researchers plan to investigate the site further, in hopes of determining the purpose of the structure.
“Kostenki 11 also seems too large to be a dwelling,” Pryor said. “It is difficult to imagine how an area this large could be roofed over using materials available in this environment.”
One suggestion by the researchers is that the site’s purpose was food storage, which helped them survive the Ice Age and its devastating winters.

Let’s block ads! (Why?)

728x90x4

Source link

Continue Reading

News

Here’s how Helene and other storms dumped a whopping 40 trillion gallons of rain on the South

Published

 on

 

More than 40 trillion gallons of rain drenched the Southeast United States in the last week from Hurricane Helene and a run-of-the-mill rainstorm that sloshed in ahead of it — an unheard of amount of water that has stunned experts.

That’s enough to fill the Dallas Cowboys’ stadium 51,000 times, or Lake Tahoe just once. If it was concentrated just on the state of North Carolina that much water would be 3.5 feet deep (more than 1 meter). It’s enough to fill more than 60 million Olympic-size swimming pools.

“That’s an astronomical amount of precipitation,” said Ed Clark, head of the National Oceanic and Atmospheric Administration’s National Water Center in Tuscaloosa, Alabama. “I have not seen something in my 25 years of working at the weather service that is this geographically large of an extent and the sheer volume of water that fell from the sky.”

The flood damage from the rain is apocalyptic, meteorologists said. More than 100 people are dead, according to officials.

Private meteorologist Ryan Maue, a former NOAA chief scientist, calculated the amount of rain, using precipitation measurements made in 2.5-mile-by-2.5 mile grids as measured by satellites and ground observations. He came up with 40 trillion gallons through Sunday for the eastern United States, with 20 trillion gallons of that hitting just Georgia, Tennessee, the Carolinas and Florida from Hurricane Helene.

Clark did the calculations independently and said the 40 trillion gallon figure (151 trillion liters) is about right and, if anything, conservative. Maue said maybe 1 to 2 trillion more gallons of rain had fallen, much if it in Virginia, since his calculations.

Clark, who spends much of his work on issues of shrinking western water supplies, said to put the amount of rain in perspective, it’s more than twice the combined amount of water stored by two key Colorado River basin reservoirs: Lake Powell and Lake Mead.

Several meteorologists said this was a combination of two, maybe three storm systems. Before Helene struck, rain had fallen heavily for days because a low pressure system had “cut off” from the jet stream — which moves weather systems along west to east — and stalled over the Southeast. That funneled plenty of warm water from the Gulf of Mexico. And a storm that fell just short of named status parked along North Carolina’s Atlantic coast, dumping as much as 20 inches of rain, said North Carolina state climatologist Kathie Dello.

Then add Helene, one of the largest storms in the last couple decades and one that held plenty of rain because it was young and moved fast before it hit the Appalachians, said University of Albany hurricane expert Kristen Corbosiero.

“It was not just a perfect storm, but it was a combination of multiple storms that that led to the enormous amount of rain,” Maue said. “That collected at high elevation, we’re talking 3,000 to 6000 feet. And when you drop trillions of gallons on a mountain, that has to go down.”

The fact that these storms hit the mountains made everything worse, and not just because of runoff. The interaction between the mountains and the storm systems wrings more moisture out of the air, Clark, Maue and Corbosiero said.

North Carolina weather officials said their top measurement total was 31.33 inches in the tiny town of Busick. Mount Mitchell also got more than 2 feet of rainfall.

Before 2017’s Hurricane Harvey, “I said to our colleagues, you know, I never thought in my career that we would measure rainfall in feet,” Clark said. “And after Harvey, Florence, the more isolated events in eastern Kentucky, portions of South Dakota. We’re seeing events year in and year out where we are measuring rainfall in feet.”

Storms are getting wetter as the climate change s, said Corbosiero and Dello. A basic law of physics says the air holds nearly 4% more moisture for every degree Fahrenheit warmer (7% for every degree Celsius) and the world has warmed more than 2 degrees (1.2 degrees Celsius) since pre-industrial times.

Corbosiero said meteorologists are vigorously debating how much of Helene is due to worsening climate change and how much is random.

For Dello, the “fingerprints of climate change” were clear.

“We’ve seen tropical storm impacts in western North Carolina. But these storms are wetter and these storms are warmer. And there would have been a time when a tropical storm would have been heading toward North Carolina and would have caused some rain and some damage, but not apocalyptic destruction. ”

___

Follow AP’s climate coverage at https://apnews.com/hub/climate

___

Follow Seth Borenstein on Twitter at @borenbears

___

Associated Press climate and environmental coverage receives support from several private foundations. See more about AP’s climate initiative here. The AP is solely responsible for all content.

Source link

Continue Reading

Science

‘Big Sam’: Paleontologists unearth giant skull of Pachyrhinosaurus in Alberta

Published

 on

 

It’s a dinosaur that roamed Alberta’s badlands more than 70 million years ago, sporting a big, bumpy, bony head the size of a baby elephant.

On Wednesday, paleontologists near Grande Prairie pulled its 272-kilogram skull from the ground.

They call it “Big Sam.”

The adult Pachyrhinosaurus is the second plant-eating dinosaur to be unearthed from a dense bonebed belonging to a herd that died together on the edge of a valley that now sits 450 kilometres northwest of Edmonton.

It didn’t die alone.

“We have hundreds of juvenile bones in the bonebed, so we know that there are many babies and some adults among all of the big adults,” Emily Bamforth, a paleontologist with the nearby Philip J. Currie Dinosaur Museum, said in an interview on the way to the dig site.

She described the horned Pachyrhinosaurus as “the smaller, older cousin of the triceratops.”

“This species of dinosaur is endemic to the Grand Prairie area, so it’s found here and nowhere else in the world. They are … kind of about the size of an Indian elephant and a rhino,” she added.

The head alone, she said, is about the size of a baby elephant.

The discovery was a long time coming.

The bonebed was first discovered by a high school teacher out for a walk about 50 years ago. It took the teacher a decade to get anyone from southern Alberta to come to take a look.

“At the time, sort of in the ’70s and ’80s, paleontology in northern Alberta was virtually unknown,” said Bamforth.

When paleontogists eventually got to the site, Bamforth said, they learned “it’s actually one of the densest dinosaur bonebeds in North America.”

“It contains about 100 to 300 bones per square metre,” she said.

Paleontologists have been at the site sporadically ever since, combing through bones belonging to turtles, dinosaurs and lizards. Sixteen years ago, they discovered a large skull of an approximately 30-year-old Pachyrhinosaurus, which is now at the museum.

About a year ago, they found the second adult: Big Sam.

Bamforth said both dinosaurs are believed to have been the elders in the herd.

“Their distinguishing feature is that, instead of having a horn on their nose like a triceratops, they had this big, bony bump called a boss. And they have big, bony bumps over their eyes as well,” she said.

“It makes them look a little strange. It’s the one dinosaur that if you find it, it’s the only possible thing it can be.”

The genders of the two adults are unknown.

Bamforth said the extraction was difficult because Big Sam was intertwined in a cluster of about 300 other bones.

The skull was found upside down, “as if the animal was lying on its back,” but was well preserved, she said.

She said the excavation process involved putting plaster on the skull and wooden planks around if for stability. From there, it was lifted out — very carefully — with a crane, and was to be shipped on a trolley to the museum for study.

“I have extracted skulls in the past. This is probably the biggest one I’ve ever done though,” said Bamforth.

“It’s pretty exciting.”

This report by The Canadian Press was first published Sept. 25, 2024.

The Canadian Press. All rights reserved.

Source link

Continue Reading

News

The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

Published

 on

 

TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

The Canadian Press. All rights reserved.

Source link

Continue Reading

Trending