In areas where folding has occurred, oil and natural gas usually collect in
Answer Details
In areas where folding has occurred, oil and natural gas usually collect in synclines. Synclines are trough-like folds in the Earth's crust where the beds dip towards each other. As sediments accumulate in these troughs, they can form reservoirs where hydrocarbons such as oil and natural gas can collect and accumulate. The hydrocarbons are trapped by impermeable rock layers, such as shale or salt, that prevent them from escaping to the surface. Therefore, synclines are often targeted for oil and gas exploration and drilling.