Plate divergence is best described as a/an _ process. A. orogenic B. isostatic C. epeirogenic D. taphrogenic
The Correct Answer and Explanation is:
The correct answer is D. taphrogenic.
Plate divergence is a process where tectonic plates move away from each other. This occurs primarily at mid-ocean ridges, such as the Mid-Atlantic Ridge, where new oceanic crust is created through volcanic activity. As plates diverge, the Earth’s lithosphere is pulled apart, creating rift zones and valleys.
To explain why taphrogenic is the correct term:
- Taphrogenic: This term is used to describe geological processes that result from the stretching and rifting of the Earth’s crust, which is what happens during plate divergence. It is a type of tectonic activity that leads to the formation of rift valleys and mid-ocean ridges, often associated with divergent boundaries between tectonic plates.
- Orogenic: This refers to mountain-building processes that occur due to the collision of tectonic plates, typically at convergent boundaries. Therefore, orogenic processes are not related to plate divergence.
- Isostatic: Isostatic processes are related to the Earth’s crust adjusting to changes in load or weight, such as when glaciers melt, causing the crust to rise. This process is not associated with plate divergence.
- Epeirogenic: Epeirogenic movements involve broad, relatively gentle uplifts or subsidence of the Earth’s crust. While they can occur in some tectonic settings, they are not directly related to the divergent boundaries where plates pull apart.
In summary, plate divergence is best described as a taphrogenic process, which involves the stretching and breaking apart of the Earth’s crust as tectonic plates move away from each other.
