Another term often used as a synonym for uniformitarianism is actualism. Both concepts suggest that geological processes have operated in the same way over time and can be used to interpret past events.
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uniformitarianism
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The principle is known as Uniformitarianism, which posits that the same geological processes observed today (such as erosion, sedimentation, plate tectonics) have been at work in the past and have shaped Earth's landscape over millions of years. This principle was popularized by geologist James Hutton in the 18th century.
Uniformitarianism
Uniformitarianism states that geologic change happens gradually over long periods of time through the same natural processes that we observe today, such as erosion, volcanism, and tectonic plate movement. This principle suggests that the Earth's landscapes and rock formations were shaped by the same forces and processes that are currently at work.