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加拿大发现的失落大陆碎片

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2020年03月24日

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Fragment of lost continent discovered in Canada

加拿大发现的失落大陆碎片

Geologists have discovered part of an ancient lost continent by sifting through diamond samples from Canada’s Baffin Island.

地质学家通过筛选加拿大巴芬岛的钻石样本,发现了一个古老的失落大陆的一部分。

By analyzing the samples, analysts identified part of the North Atlantic craton, a remnant of the Earth’s ancient continental crust that stretched from Labrador to Scotland. An article on the University of British Columbia’s website explains that experts were studying Kimberlite rocks, which formed millions of years ago and were brought to the Earth’s surface by geological forces.

通过分析这些样本,分析人员确定了北大西洋克拉通的一部分,这是地球从拉布拉多延伸到苏格兰的古老大陆地壳的残余。英属哥伦比亚大学网站上的一篇文章解释说,专家们正在研究金伯利岩,这些岩石形成于数百万年前,是由地质力量带到地球表面的。

加拿大发现的失落大陆碎片

The samples from a De Beers Chidliak Kimberlite Province property in southern Baffin Island, however, have a mineral signature that corresponds to other parts of the craton.

然而,来自位于巴芬岛南部的德比尔斯奇德利亚克金伯利岩省的一处地产的样本,却具有与克拉通其他部分相对应的矿物特征。

“The mineral composition of other portions of the North Atlantic craton is so unique there was no mistaking it,” University of British Columbia geologist Maya Kopylova told the website. “It was easy to tie the pieces together. Adjacent ancient cratons in Northern Canada—in Northern Quebec, Northern Ontario and in Nunavut—have completely different mineralogies.”

不列颠哥伦比亚大学地质学家玛雅·科皮洛娃在接受网站采访时说:“北大西洋克拉通其他部分的矿物成分非常独特,这一点毋庸置疑。”。“把这些碎片绑在一起很容易。加拿大北部魁北克北部、安大略省北部和努纳武特的相邻古克拉通具有完全不同的矿物学。”

Kopylova is the lead author of the research paper, published in the Journal of Petrology.

科皮洛娃是这篇发表在《岩石学杂志》上的研究论文的主要作者。

Other geological discoveries have been garnering attention recently. Last year, scientists announced the discovery of the world’s deepest land canyon thousands of feet below an Antarctic glacier.

其他地质发现最近也引起了人们的注意。去年,科学家宣布在南极冰川下数千英尺处发现了世界上最深的陆地峡谷。

Glaciologists led by the University of California, Irvine, unveiled what they describe as the most accurate portrait yet of the contours of the land beneath Antarctica’s ice shelf. The research was presented this week at the Fall Meeting of the American Geophysical Union in San Francisco and published in the journal Nature Geoscience.

以加州大学欧文分校为首的冰川学家公布了他们所说的迄今为止最精确的南极冰架下陆地轮廓图。这项研究本周在旧金山举行的美国地球物理联合会秋季会议上发表,并发表在《自然地球科学》杂志上。

In another project, scientists announced the discovery of thousands of mysterious holes in the seabed off Big Sur, Calif.

在另一个项目中,科学家宣布在加州大苏尔附近的海底发现了数千个神秘的洞。


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