A Practical Guide to Learning Geology: From Rock Identification to Geological Time — An accessible, evidence-led geology feature for readers interested in Earth science and geological history.
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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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Sedimentary structures form as particles are transported, deposited and modified. Bedding, cross-bedding, ripple marks, graded layers and mud cracks can pr
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Igneous textures preserve clues about how magma or lava cooled. Crystal size, shape and arrangement can reveal whether molten material solidified slowly un
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Earth's lithosphere is divided into moving plates that interact at divergent, convergent and transform boundaries. These settings help explain the global d
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Radiometric dating estimates the age of suitable minerals by measuring the proportions of radioactive parent isotopes and their decay products. It provides
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Relative dating establishes the sequence of geological events without assigning an exact numerical age. It is a foundational skill because rocks often pres
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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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Minerals are identified through a combination of physical and chemical properties rather than colour alone. A consistent method helps students distinguish
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