Lakeside sandstones may hold key to ancient continent's movement

PHYSorg
Aug 18, 2025, 11:41 am268 ptsTop
About 1.1 billion years ago, the oldest and most tectonically stable part of North America—called Laurentia—was rapidly heading south toward the equator. Laurentia eventually slammed into Earth's other landmasses during the Grenville orogeny to form the supercontinent Rodinia.

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