<Table> External image <Tr> <Td_colspan="2"> Out - of - phase detachment folds and low - angle faults in the Monterey Formation at "the Boathouse" section, Vandenberg Air Force Base </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Out - of - phase detachment folds and low - angle faults in the Monterey Formation at "the Boathouse" section, Vandenberg Air Force Base </Td> </Tr> <P> The Monterey Formation is an extensive Miocene oil - rich geological sedimentary formation in California, with outcrops of the formation in parts of the California Coast Ranges, Peninsular Ranges, and on some of California's off - shore islands . The type locality is near the city of Monterey, California . The Monterey Formation is the major source - rock for 37 to 38 billion barrels of oil in conventional traps such as sandstones . This is most of California's known oil resources . The Monterey has been extensively investigated and mapped for petroleum potential, and is of major importance for understanding the complex geological history of California . Its rocks are mostly highly siliceous strata that vary greatly in composition, stratigraphy, and tectono - stratigraphic history . </P>

Which of the following is monterey bay’s biggest possible source of oil