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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A caldera is a broad volcanic depression formed when the ground collapses or subsides after a large volume of magma is withdrawn from a shallow reservoir.
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A river delta forms where a river enters a standing body of water and deposits sediment faster than waves, tides and currents can remove it. Deltas ar
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Alluvial fans are fan-shaped sediment deposits that form where streams emerge from confined valleys onto flatter terrain. They are common in arid and
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Karst landscapes develop where soluble rocks, especially limestone, are dissolved by water. Sinkholes, disappearing streams, springs and caves are sur
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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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A rock sample without reliable location and context loses much of its scientific value. Provenance links a specimen to the outcrop, geological unit an
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Good field geology begins with planning and respect for the site. Responsible observation protects people, geological features and the evidence that f
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