That speed showed that the samples were made of zircon, and zircon is one of the oldest known solids, meaning the moon must be the same age, 4.46 billion years old.

这个速度表明由构成，而已知最古老固体之一，这意味着月球年龄也一定44.6亿岁。

So despite earth's best efforts to hide its age from us, uranium-lead dating of little bits of zircon tells us our planet formed at least 4.4 billion years ago.

所以尽管地球尽最大力对我们来掩藏它年龄，少量铀铅结合在内，告诉我们，我们星球至少在 44 亿年前形成。这儿。

But the authors will also need to explain why zircons previously found at other, even older, sites do not display the same telltale signature of impact.

但作者还需要解释，为什么之前在其他更古老地点发现没有显示出相同撞击迹象。

In this case, Ramezani was dating tiny zircon crystals, in fact, in a fossil bed in Patagonia, near the southern tip of South America.

在这个案例中，拉米扎尼在靠近南美洲南端巴塔哥尼亚化层中测定微小晶体年代。

They compared that core with another from Arizona, embedded with zircons.

他们将这块岩心与亚利桑那州一块嵌有岩心进行了对比。

The Russian president has said the country's navy will receive hypersonic Zircon cruise missiles within the next few months.

俄罗斯总统表示，该国海军将在未来几个月内收到超音速巡航导弹。

In that study, researchers examined how many atoms of uranium and lead were contained in the zircon crystals.

在那项研究中，研究人员检查了晶体中含有多少铀和铅原子。

This favours impact formation, as zircons transported by mantle plumes would have more profound origins.

这有利于撞击形成，因为地幔热柱搬运具有更深起源。

And a crystal called Zircon is at the heart of this discovery.

这一发现核心一种叫做晶体。

Which is weird, because lead isn't similar to zirconium, and so would never have ended up in a zircon crystal on its own, so the more lead you find in a zircon crystal, the older you know it is.

这就奇怪了，因为铅与不相似，所以绝不会单独出现在晶体中，所以在晶体中发现铅越多，它年代越久远。

The zircon is believed to have formed when the lunar surface cooled after being in a melting state after the crash.

据信，在撞击后月球表面熔化后冷却时形成。

And that's where a resilient little mineral called zircon comes in.

这就有弹性来源。

The team said the crystals contained a mineral called zircon.

研究小组表示，这些晶体中含有一种名为矿物质。

Zircons whose ratio of oxygen-18 to oxygen-16 is 0.5% higher than found in seawater, for example, would have originated far below Earth's surface.

例如，在海水中发现氧-18和氧-16比率比0.5%可能起源于地球表面以下很远地方。

And one of the oldest terrestrial minerals ever found, quite possibly the oldest piece of the earth we know of, happens to be a very lead-filled grain of zircon found embedded in sandstone in Western Australia.

有史以来发现最古老陆地矿物之一，很可能我们所知道地球上最古老一块，恰好嵌入澳大利亚西部砂岩中非常铅含量颗粒。

Analyses of their constituent zircons could well provide valuable supporting evidence that Earth's continents owe their existence to bodies from outer space.

对其构成分析很好地提供有价值佐证，证明地球大陆存在应归功于来自外太空天体。

Heck noted that zircon is a very strong mineral that can " survive the breakdown of rocks during weathering."

赫克指出，一种非常坚固矿物质，可以“在岩风化过程中幸存下来”。

Zircon is similar to quartz, both in its chemical structure and in its durability, they both stick around a long time after other minerals weather away.

化学结构和耐久性都与英相似，它们都能在其他矿物风化后长期存在。

Zircon may be similar to a hypersonic missile developed with India.

可能类似于与印度开发超音速导弹。

Zircon dating helped scientists figure out that these separate mountain ranges used to be one.

测年帮助科学家确定，这些独立山脉曾经连为一体。