The proponents of uniformitarianism held that the present was the key to the past, and that all geological processes (such as erosion) throughout the past were like those that can be observed now.

The theory of uniformitarianism taught that the present was the key … 8:16 Holt McDougal Introduction to Geography: Online Textbook Help were not only catastrophists but believed in the Noahic Flood as the most important geologic event in earth history, the principle of uniformitarianism has dominated geological thinking for the past 150 years. Cuvier and other scientists believed that most major features of the land we see today were established a very long time ago by very dramatic events.

Plate Tectonics and the Location of Mineral Deposits Catastrophism is the idea that natural disasters (floods, earthquakes, etc.)

Uniformitarianism: Definition, Principles & Examples So, a species that went extinct was probably killed off by a giant natural disaster.

Photo: Oceanview Mines Where You Can Find Minerals and Gemstones in Californ...  Photo: Michigan Rocks & Minerals For the First Time, Researchers Electrically Transform Material From Non-magnetic to Magnetic... Rare Urchin Quartz (Quartz crystal with Mannardite phontom inside) from Brazil Photo: Mike Bowers Star Hollandite Quartz is a type of... Cleveland-Lloyd Dinosaur Quarry Dinosaurs Found in Mass Grave Died of Drought The abundance of allosaur fossils in the Cleveland-Ll... Scientists say the Tongan island of Hunga Tonga Hunga Ha'apai, created when an undersea volcano erupted in 2014, may offer clues to h...Geologists haven't always agreed about the history of our planet.

Relative vs. Absolute Time in Geology When it came to Earth's history, they looked to the biblical story of the great flood to help them understand the geologic events of the past.Outside the religious world, Cuvier was also making observations that puzzled him about the fossil record.
We still use the basic ideas of uniformitarianism as a foundation for geologic study, but we recognize that some elements of catastrophism are an integral part of the history of our planet.







Hutton's idea was a major turning point in the field of geology.

We used to think that species evolved gradually, slowly changing from one species to another.

These events would not at all resemble the small-scale natural disasters we experience in our time.



Catastrophism argued for a young Earth, while uniformitarianism argued for an old Earth.

Earth Science: Tutoring Solution The Cenozoic Era: Definition, Time Period & Facts



- Definition & Effect

This theory is supported by lots of fossil evidence. Base Level of a Stream: Definition & Effect on Erosion . UExcel Earth Science: Study Guide & Test Prep

This is in contrast to uniformitarianism (sometimes described as gradualism), in which slow incremental changes, such as erosion, created all the Earth's geological features. Combined with his impressions of the violent natural disasters recounted in the Bible, Cuvier's observations made him believe that most of Earth's history was characterized by geologic catastrophe.

But, in general, we now embrace uniformitarianism, with a hint of catastrophism.

These events could certainly happen again, but humans have never seen them on such an enormous scale. Analyzing Spatial Organization of People, Places & Environments on Earth's Surfaces

They have debated between catastrophism and uniformitarianism over the last few hundred years! As a zoologist and naturalist, he helped establish our current understanding of the history of Earth. Gemstones collection from Oceanview Mines, California.

Law of Superposition: Definition & Concept

- Law of Superposition, Principles of Original Horizontality & Cross-Cutting Relationships



Physical Science Textbook
Guns, Germs, and Steel Study Guide

They know that there were some pretty big geologic events in the past, like asteroid impacts and massive volcanic eruptions that changed our planet in significant ways.

Course Navigator Fields of Geography: Cartography, Hydrology & Meteorology


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