アルゴン年代測定：テクタイト形成と衝突時期の解明

Articles about アルゴン年代測定

Brazil’s 6‑Million‑Year‑Old Tektites — Crater Missing

Researchers have identified a new strewn field of rare impact glass in Brazil — tektites dated to about 6.3 million years ago — yet no matching crater has been found. The find, na… 3月 04, 2026