TY - RPRT TI - Natural offshore oil seepage and related tarball accumulation on the California coastline — Santa Barbara Channel and the southern Santa Maria Basin; source identification and inventory AU - T.D. Lorenson AU - Frances D. Hostettler AU - Robert J. Rosenbauer AU - Kenneth E. Peters AU - Jennifer A. Dougherty AU - Keith A. Kvenvolden AU - Christina E. Gutmacher AU - Florence L. Wong AU - William R. Normark PY - 2009 DO - 10.3133/ofr20091225 UR - https://pubs.usgs.gov/publication/ofr20091225 ID - ofr20091225 ER -