Which of the following tectonic settings will be coolest at 30 km depth?
A)regions of continental extension
B)stable continental lithosphere
C)volcanic arcs
D)The temperature in all three tectonic settings above will be the same at 30 km depth.

Question

Quizplus · Accepted Answer

Stable continental lithosphere is typically cooler compared to regions of continental extension and volcanic arcs due to less geothermal activity and tectonic movement. Continental extension and volcanic arcs are associated with higher heat flow from the mantle, making them warmer at equivalent depths.

Which of the Following Tectonic Settings Will Be Coolest at 30