"“The samarium-neodymium isotope maps that we're looking at are not only a step back in time—they're like a time machine—but they have this spatial character that allows us to recognize an ancient continental landmass that formed 500 million years ago, even though the mountains that the rocks are in are only 20 million years old,” Collins explained."
Framing: assertive ·
First seen: 2026-09-10 ·
Last seen: 2026-09-10 ·
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