Here's a breakdown:

* Seamount: A seamount is an underwater mountain, often formed by volcanic activity.

* Collision: When a seamount collides with a continent, it's not a head-on, equal collision. The continental crust, being thicker and less dense, usually overrides the seamount.

* Obduction: This process of the denser oceanic crust (including the seamount) being forced up and over the continental crust is called obduction.

* Mountain Chain: The uplifted seamount and associated oceanic crust can form a mountain chain along the continental margin.

Key Points:

* Obduction is a less common process than subduction (where oceanic crust is pulled under continental crust).

* It often results in smaller, localized mountain ranges compared to the massive mountain chains formed by subduction.

Examples:

* The Troodos Ophiolite Complex in Cyprus is a famous example of an obducted seamount.

* Some parts of the Appalachian Mountains are thought to have formed due to obduction events.

Let me know if you have any other questions!