An impermeable sedimentary rock, such as a mudrock or evaporite, through which fluids cannot migrate. Cap rocks overlie traps formed by reservoir rocks and in a position that prevents further migration of petroleum.
« Back to Glossary IndexCap rock
An impermeable sedimentary rock, such as a mudrock or evaporite, through which fluids cannot migrate. Cap rocks overlie traps formed by reservoir rocks and in a position that prevents further migration of petroleum.
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