The Great Unconformity: What a Missing Billion Years Can Tell Us About Earth — An accessible, evidence-led geology feature for readers interested in Earth science and geological history.
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Faults are fractures along which rocks have moved relative to one another. They record deformation, influence groundwater pathways and help explain the dis
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Folds are bends in rock layers produced when rocks deform under stress. They are common in mountain belts and sedimentary basins, where compression, burial
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Metamorphism changes the mineralogy and texture of existing rock through heat, pressure and chemically active fluids without requiring complete melting. Th
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The rock cycle describes the transformations that connect igneous, sedimentary and metamorphic rocks. It is not a fixed sequence: any rock can be uplifted,
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A caldera is a broad volcanic depression formed when the ground collapses or subsides after a large volume of magma is withdrawn from a shallow reservoir.
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Columnar basalt is a striking volcanic rock formation in which cooling lava is divided into long, polygonal columns. The geometry is natural: it devel
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