Answer
An oil trap is a geological formation that prevents the upward migration of oil and natural gas, leading to their accumulation underground. Two examples of oil traps are:
a. Anticline trap: This type of trap forms when a fold in the rock layers creates a dome-like structure. Oil and gas migrate upward but become trapped in the upward-arching rock layers.
b. Fault trap: In this case, a fault (a fracture in the Earth's crust) forms a barrier that blocks the upward movement of oil and gas, causing them to accumulate in the rocks adjacent to the fault.
All oil traps have in common a mechanism that prevents the hydrocarbons from rising further, resulting in the accumulation of oil and gas in porous rocks, known as reservoirs.
Work Step by Step
Refer to the answer above.
