Simplify the following text for a Grade 11 native English-speaking person.
Original: Mud volcanoes are often associated with petroleum deposits and tectonic subduction zones and orogenic belts ; hydrocarbon gases are often erupted .
Simplified: Mud volcanoes are often linked with places where petroleum gathers and around areas of tectonic subduction . They can also be linked with orogenic belts where hydrocarbon gases usually erupt .