Miners Find Mammoth Remains Buried in North Dakota

2024-01-15 11:13:32来源:网络

Miners Find Mammoth Remains Buried in North Dakota

矿工在北达科他州发现猛犸象遗骸

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  By Gregory Stachel

  12 January 2024

  The first person who saw it was working overnight. The worker, a shovel operator, saw something white as he placed a large amount of dirt into the back of a truck.

  The driver of the truck put the dirt in the road. Another worker operating a bulldozer was ready to flatten it. But the worker stopped for a closer look when he, too, saw a piece of white.

  Only then did the mining workers realize they had found something special: a 2-meter-long mammoth tusk that had been buried for thousands of years.

  A mammoth is a kind of animal that lived in ancient times and had very long tusks. The animal went extinct, or disappeared, about 10,000 years ago in what is now the American state of North Dakota.

  The miners unearthed the tusk at the Freedom Mine near Beulah, North Dakota. The mine produces up to 14.5 metric tons of coal each year.

  "We were very fortunate, lucky to find what we found," said David Straley. He is an executive of North American Coal, which owns the mine.

  After finding the tusk, the workers stopped digging in the area and called in experts. The experts estimated the tusk to be anywhere from 10,000 to 100,000 years old.

  Jeff Person is a paleontologist with the North Dakota Geologic Survey. A paleontologist is an expert on ancient remains. Person was one of the experts that examined the tusk. He said it was "miraculous" that the tusk had not been more damaged, considering the large equipment that miners use at the site.

  Another dig at the discovery site found more bones. Experts found more than 20 bones. It is likely the most complete mammoth found in North Dakota, where it is more common to find one mammoth bone, tooth or piece of a tusk.

  Person said it is not a lot of bones compared to how many make up the animal's skeleton. But he said, "...it's a lot more than we've ever found of one animal together."

  Mammoths once were found across parts of Africa, Asia, Europe, and North America. Paul Ullmann, a University of North Dakota paleontologist, said mammoth remains have been found throughout the United States and Canada.

  The discovery at the mine is somewhat rare in North Dakota and in the area. Many remains of the animals alive during the last Ice Age were destroyed by movements of ice sheets, Ullmann said.

  Other areas have produced more mammoth remains, such as in Texas and South Dakota. People have even found frozen mammoth bodies in Canada and Russia, Ullmann added.

  The tusk weighs more than 22.6 kilograms and can break easily. Experts covered the tusk in plastic in order to control how fast the tusk loses water. If it loses water too quickly, the bone could break apart, Person said.

  The experts covered the other bones in plastic and stored them. The bones will remain in plastic for at least several months until the scientists can get the water out safely. The paleontologists will identify what kind of mammoth the tusk came from later, Person said.

  The mining company plans to donate the bones to the state for educational purposes.

  "Our goal is to give it to the kids," Straley said.

  I'm Gregory Stachel.

  Jack Dura reported this story for Voice of America. Gregory Stachel adapted it for VOA Learning English.

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  作者:Gregory Stachel

  2024年1月12日

  首个发现这个的人是在深夜工作的。这名工人是一名铲车操作员,当他把大量的土放入卡车后部时,他看到了一些白色的东西。

  卡车司机把土放在了路上。另一名驾驶推土机的工人准备把它压平。但当他也看到一片白色的东西时,他停下来仔细看了看。

  直到那时,矿工们才意识到他们发现了一些特别的东西:一个被埋藏了数千年的2米长的猛犸象牙。

  猛犸象是一种生活在古代,拥有非常长的象牙的动物。这种动物在大约10000年前灭绝,也就是现在的美国北达科他州。

  矿工们在北达科他州Beulah附近的Freedom矿山发掘出了这只象牙。这个矿山每年可以产出多达14.5吨的煤。

  "我们非常幸运,找到了我们所找到的东西,"北美煤炭公司的一位高管David Straley说。这家公司拥有这座矿山。

  在找到象牙后,工人们停止了在该区域的挖掘,并召来了专家。专家估计这只象牙的年龄在10000到100000年之间。

  Jeff Person是北达科他地质调查的一位古生物学家。古生物学家是研究古代遗迹的专家。Person是检查这只象牙的专家之一。他说,考虑到矿工在现场使用的大型设备,这只象牙没有受到更多的损坏,这真是"奇迹"。

  在发现地点的另一次挖掘中,专家们找到了更多的骨头。他们找到了20多块骨头。这可能是在北达科他州发现的最完整的猛犸象,因为在那里,更常见的是找到一块猛犸象的骨头、牙齿或象牙的一部分。

  Person说,与动物的骨骼总数相比,这并不算多。但他说,“...这比我们以前发现的同一动物的骨骼要多得多。”

  猛犸象曾经分布在非洲、亚洲、欧洲和北美的部分地区。北达科他大学的古生物学家Paul Ullmann说,猛犸象的遗骸在美国和加拿大各地都有发现。

  在北达科他州和该地区,矿山的这次发现有些罕见。Ullmann说,许多在最后一次冰河时期活着的动物的遗骸被冰川的移动所破坏。

  其他地区发现了更多的猛犸象遗骸,比如在德克萨斯和南达科他州。Ullmann补充说,人们甚至在加拿大和俄罗斯发现了冻结的猛犸象尸体。

  这只象牙重达22.6公斤,很容易断裂。专家们用塑料包裹住象牙,以控制象牙失水的速度。Person说,如果它失水太快,骨头可能会破裂。

  专家们用塑料包裹住其他的骨头并储存起来。这些骨头将至少被包裹在塑料中几个月,直到科学家们可以安全地把水分去除。Person说,古生物学家们将在后期确定这只象牙来自哪种猛犸象。

  矿业公司计划将这些骨头捐赠给州政府,用于教育目的。

  "我们的目标是把它给孩子们," Straley说。

  我是Gregory Stachel。

  Jack Dura为美国之音报道了这个故事。Gregory Stachel为美国之音学习英语改编了它。

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  故事中的词汇

  shovel – n. 铲子,一种有长柄的工具,用于挖掘和扔土、沙或雪。

  bulldozer – n. 推土机,一种强大而重型的车辆,前部有一大块弯曲的金属片,用于移动土石,推倒树木和其他结构。

  tusk – n. 长牙,一种非常长、大的牙齿,从动物(如象、海象或野猪)的嘴中伸出。

  fortunate – adj. 幸运的

  miraculous – adj. 奇迹般的,非常奇妙或惊人的

  kid – n. 年轻人,孩子


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