Moreover, in each part of the River, these Gangdese-derived zircons show characteristic eHf(T) values that could be correlated to the neighboring batholithic values.
Radioactive nuclides are solidified at crystal lattice as one part of crystalloid by zirconolite-rich synroc, which greatly enhances the long-term safety of radioactive waste disposing.
Analyses of their constituent zircons could well provide valuable supporting evidence that Earth's continents owe their existence to bodies from outer space.
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.
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.