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A '''sedimentary basin''' is a depression filled with sedimentary rocks. The presence of sedimentary rocks is proof that a basin existed.

A '''sedimentary basin''' is a depression filled with sedimentary rocks. The presence of sedimentary rocks is proof that a basin existed.

The depression, formed by any tectonic process, is lined by '''basement rock''', which can be igneous, metamorphic, and/or sedimentary rock. The '''basin fill''' includes the rock matter, organic matter, and water deposited in this depression. In certain cases, such as with coal and some carbonate deposits, the sedimentary material is formed in situ. The essential elements of a petroleum system are deposited in sedimentary basins. Frequently, one or more overlapping sedimentary basins are responsible for the essential elements of a petroleum system. Traps are formed by tectonic processes that act on sedimentary rocks. However, the moment petroleum is generated, biologically or thermally, a petroleum system is formed.

The depression, formed by any tectonic process, is lined by '''[[basement]] rock''', which can be igneous, metamorphic, and/or sedimentary rock. The '''basin fill''' includes the rock matter, organic matter, and water deposited in this depression. In certain cases, such as with [[coal]] and some carbonate deposits, the sedimentary material is formed in situ. The essential elements of a petroleum system are deposited in sedimentary basins. Frequently, one or more overlapping sedimentary basins are responsible for the essential elements of a petroleum system. Traps are formed by tectonic processes that act on sedimentary rocks. However, the moment petroleum is generated, biologically or thermally, a petroleum system is formed.

==Petroleum system==

==Petroleum system==