Unmapped
Unmapped area
Tcw
Coldwater Sandstone (upper? and middle Eocene)
Qls
Landslide deposits (Holocene and Pleistocene)
af
Artificial fill (Holocene)
Tspl
Sespe Formation, lower conglomerate and sandstone unit (lower Oligocene? and upper Eocene)
Tspm
Sespe Formation, middle conglomerate and sandstone unit (Oligocene)
Tspu
Sespe Formation, upper sandstone and mudstone unit (upper Oligocene)
Qdf
Debris flow deposits (Holocene and upper Pleistocene?)
Qac
Alluvium and colluvium (Holocene and upper Pleistocene)
Qoa
Older alluvial deposits (upper and middle Pleistocene)
Tv
Vaqueros Formation (upper Oligocene)
Qa
Active channel alluvium (Holocene)
Qoa?
Older alluvial deposits, uncertain (upper and middle Pleistocene)
Qc
Colluvium (Holocene and upper Pleistocene)
w
Open water
Tr
Rincon Shale (lower Miocene)
Qia
Intermediate alluvial deposits (upper Pleistocene)
Qmt
Marine-terrace deposits (upper Pleistocene)
Qsb
Santa Barbara Formation (middle and lower Pleistocene)
Tml
Monterey Formation, lower calcareous unit (middle and lower Miocene)
Qia?
Intermediate alluvial deposits, uncertain (upper Pleistocene)
Trs
Rincon Shale, siliceous shale interval (lower Miocene)
Tml?
Monterey Formation, lower calcareous unit, uncertain (middle and lower Miocene)
Qsb?
Santa Barbara Formation, uncertain (middle and lower Pleistocene)
Qmt?
Marine-terrace deposits, uncertain (upper Pleistocene)
Qb
Beach deposits (Holocene)
Qls?
Landslide deposits, uncertain (Holocene and Pleistocene)
Tmu
Monterey Formation, upper siliceous unit (upper Miocene)
Tsq
Sisquoc Formation (lower Pliocene and upper Miocene)
Tmlb
Monterey Formation, breccia (middle? and lower Miocene)
Tmm
Monterey Formation, middle shale unit (upper and middle Miocene)
Tu
Unnamed mudstone (upper Miocene)
Qbx
Shale-clast sedimentary breccia (middle Pleistocene)
Qca?
Casitas Formation, uncertain (upper and middle Pleistocene)
Qe
Estuarine deposits (Holocene)
Tmu?
Monterey Formation, upper siliceous unit, uncertain (upper Miocene)
QTst?
Siltstone unit, uncertain (lower Pleistocene and upper Pliocene?)
QTst
Siltstone unit (lower Pleistocene and upper Pliocene?)
Qca
Casitas Formation (upper and middle Pleistocene)
Qcg
Conglomeratic unit (middle and lower Pleistocene)
Qss
Sandstone unit (lower Pleistocene?)
Qas
Asphalt deposits (Holocene)
Qds
Dune sand (Holocene)