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.

这个速度表明样本是由锆石构成，而锆石是已知最古老固体之一，这意味着月年龄也一定是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.

所以尽尽最大力对我们来掩藏它年龄，少量铀铅结合在锆石内，告诉我们，我们星至少在 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点发现锆石没有显示出相撞击迹象。

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哥尼亚化石层中测定微小锆石晶体年代。

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

在本研究中，Ramezani 一直在北美南段附近哥尼亚，测定那里化石床中镶嵌微型锆英石年代。

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锆石岩心进行了对比。

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

在那项研究中，研究人员检查了锆石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，因为幔热柱搬运锆石具有更深起源。

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，因为铅与锆不相似，所以绝不会单独出现在锆石晶体中，所以在锆石晶体中发现铅越多，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，锆石是在撞击后月表面熔化后冷却时形成。

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

这就是有弹性锆石来源。

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锆石矿物质。

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比率比高0.5%锆石可能起源于表面以下很远方。

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矿物之一，很可能是我们所知道上最古老一块，恰好是嵌入澳大利亚西部砂岩中非常铅含量锆石颗粒。

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

对其构成锆石分析很好提供有价值佐证，证明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，锆石是一种非常坚固矿物质，可以“在岩石风化过程中幸存下来”。

But zircon also has two things quartz doesn't: zirconium, which gives it its name, and small traces of radioactive uranium.

锆，这是它名字由来，还有少量放射性铀痕迹。

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

锆石测年帮助科学家确定，这些独立山脉曾经是连为一体。

Zircons are generally very beautiful minerals are pretty simple.

- 锆石通常是非常美丽矿物，且结构相当简单。

Most of the broad summit is comparatively level and thick sown with crystals, quartz, mica, hornblende, feldspar, granite, zircon, tourmaline, etc., weathered out and strewn closely and loosely as if they had been sown broadcast.

宽阔峰顶大部分较为平坦， 密布着水晶、石英、云母、角闪石、长石、花岗岩、锆石、电气石等，经风化后，密布、松散， 犹如播种。