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

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。

Never ask an australopith her age Researchers have identified six distinct " geological members" of breccia at Sterkfontein.

永远不要问南方古猿她的年龄 研究已经在斯特克方丹确定了六个不同的角砾岩“地质”。

To test that idea, they directly dated the cave breccias in Members 2 and 4 using cosmogenic nuclide dating, which Dr Granger helped develop.

为了验证这个想法，他们使用格兰杰博士帮助开发的宇宙素测年法，直接对 2 和 4 中的洞穴角砾岩进行了测年。

The team now reckon the Member 4 breccia formed between 3.4m and 3.6m years ago, over a million years earlier than believed.

该团队现在估计 Member 4 角砾岩形于 340 万至 360 万年前，比们认为的早了 100 万年以上。

Using this method Dr Granger and colleagues determined, in 2015, that the breccia in Member 2 is 3.7m years old—1.5m years more ancient than originally thought.

使用这种方法，Granger 博士及其同事在 2015 年确定， 2 中的角砾岩有 370 万年的历史——比最初认为的要古老 150 万年。