What effect would the intrusion of a magma body have on the depth to the "oil window",and why?
A) None.
B) The depth to the oil window should increase because the magma is migrating upward and thereby decreasing crustal pressures
C) The depth to the oil window should decrease because the magma is bringing heat closer to Earth's surface.
D) The depth to the oil window should increase because the water in the magma will cool the nearby rock.

Question

Quizplus · Accepted Answer

The intrusion of a magma body would bring heat closer to Earth's surface, thus increasing the temperature of the surrounding rock. This increase in heat could cause the hydrocarbons within the rock to break down and enter the liquid phase, reducing the depth to the oil window.

What Effect Would the Intrusion of a Magma Body Have