Percolating into empty cracks and cavities, such as those found in breccias, it creates flowstones.

渗透到空的裂缝和空腔中，例如在角砾岩中发现的裂缝和空腔，它会产生流石。

" It's flowstone. It's really common in caves, " QT explained.

“这是流石。它在洞穴中很常见，”QT 解释道。

And they were found beneath a layer of flowstone that was at least 80,000 years old.

它们是在至少有 80,000 年历史的流石层下被发现的。

The ages of these flowstones can be determined by the ratio within them of the radioactive elements uranium and thorium.

这些流石的年龄可以通过其中放射性元素铀和钍的比例来确定。

The trouble with relying on flowstones is that they can be younger than the surrounding rock.

依赖流石的麻烦在于它们可能比周围的岩石更年轻。

I collected a whole bunch of flowstones from northeast Greenland, and these all formed at times in the past when it was warmer and wetter than today.

我从格陵兰岛东北部收集了一大堆流石，这些都是在过去比现在更温暖更潮湿的时候形成的。

The flowstones in Member 4 have been dated to between 2.1m and 2.5m years ago, with flowstones in Member 2 a similar age.

第 4 段中的流石可追溯到 210 万至 250 万年前，第 2 段中的流石年龄相似。