Ronald R. Charpentier Timothy R. Klett Michael E. Brownfield Janet K. Pitman Stephanie B. Gaswirth Sarah J. Hawkins Paul G. Lillis Kristen R. Marra Tracey J. Mercier Heidi M. Leathers Christopher J. Schenk Katherine J. Whidden Marilyn E. Tennyson 2015 <p>Using a geology-based assessment methodology, the U.S. Geological Survey assessed mean volumes of 21 million barrels of oil (MMBO), 27 billion cubic feet of gas, and 1 million barrels of natural gas liquids in two assessment units (AUs) that may contain continuous oil resources. Mean volumes of oil for the individual assessment units are 14 MMBO in the Monterey Buttonwillow AU and 7 MMBO in the Monterey Maricopa AU.</p> application/pdf 10.3133/fs20153058 en U.S. Geological Survey Assessment of undiscovered continuous oil and gas resources in the Monterey Formation, San Joaquin Basin Province, California, 2015 reports