マンソンの衝撃構造: 40Ar/39Ar 年代とその遠隔の衝撃は,南ダコタ州南東部のピエール・シェールで放出されています

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Updated: Jul 12, 2026

Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid
08:58

Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid

Published on: December 2, 2022

G A Izett, W A Cobban, J D Obradovich

    Science (New York, N.Y.)
    |October 29, 1993
    PubMed
    まとめ

    アイオワ州マンソンの衝突構造 (MIS) は738億年前に形成され,白亜紀・三次紀の境界とは異なる. このアルゴン-アルゴン年代測定は,MISが以前に考えられていたよりも古いことを明らかにし,地質学的タイムラインに影響を与えています.

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