geodynamics

American  

[jee-oh-dahy-nam-iks] / ˌdʒi oʊ daɪˈnæm ɪks /

noun

1. (used with a singular verb) the science dealing with dynamic processes or forces within the earth.

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geodynamics British  

/ ˌdʒiːəʊdaɪˈnæmɪks /

noun

1. (functioning as singular) the branch of geology concerned with the forces and processes, esp large-scale, of the earth's interior, particularly as regards their effects on the crust or lithosphere

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Other Word Forms

Derived Forms

• geodynamical
  adjective
• geodynamic
  adjective
• geodynamicist
  noun

Etymology

Origin of geodynamics

First recorded in 1880–85; geo- + dynamics

Explanation

Geodynamics is a branch of physics that studies how the forces and processes that occur deep inside the planet change and shape the earth over time. Throughout geologic history, the earth has constantly changed, and it continues to do so. Geodynamics seeks to explain how and why. It studies the interactions between the planet's layers, including the liquid-metal core, the hot mantle surrounding it, and the crust, or outermost layer. Geodynamics helps explain how tectonic plates collide to form mountains and pull apart to create oceans. It deals with the forces that cause volcanic activity, earthquakes, and the magnetic field that provides a protective shield around the planet.

Example Sentences

"This work is a great example of how combining planetary science, geodynamics and mineral physics can help us solve some of Earth's oldest mysteries," said Jie Deng of Princeton University, a co-author of the study.

From Science Daily • Nov. 20, 2025

So-called deep-mantle geodynamics is "a whole new area of research," Shirey says.

From Scientific American • Jul. 25, 2011