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Geologic map of the Oceanside Quadrangle



Geologic map of the Oceanside 30'x60' Quadrangle, California


California Geological Survey, Regional Geologic Map No. 2, 1:100,000 scale

Compiled by: Michael P. Kennedy and Siang S. Tan

2002

Digital preparation by: Kelly R. Bovard, Rachel M. Alvarez, Michael J. Watson, and Carlos I. Gutierrez


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DESCRIPTION OF MAP UNITS
Artificial fill (late Holocene)
Wash deposits (late Holocene)
Alluvial fan deposits (late Holocene)
Alluvial flood-plain deposits (late Holocene)
Landslide deposits, undivided (Holocene and Pleistocene)
Marine beach deposits (late Holocene)
Paralic estuarine deposits (late holocene)
Undivided marine deposits in offshore region (late Holocene)
Marine fan deposits (late Holocene)
Young Surficial Deposits
Young alluvial fan deposits (Holocene and late Pleistocene)
Young alluvial flood-plain deposits (Holocene and late Pleistocene)
Young colluvial deposits (Holocene and late Pleistocene)
Young alluvial valley deposits (Holocene and late Pleistocene)
Old Surficial Deposits
Old alluvial fan deposits, undivided (late to middle Pleistocene)
Unit 2
Unit 1
Old alluvial flood-plain deposits, undivided (late to middle Pleistocene)
Unit 7
Unit 6
Unit 5
Unit 2-6
Unit 1-2
Old colluvial deposits (late to middle Pleistocene)
Old paralic deposits, undivided (late to middle Pleistocene)
Units 7-8
Unit 7
Units 6-7
Unit 6
Units 4-6
Unit 4
Unit 3
Units 2-6
Units 2-4
Unit 1-2
Unit 1
Units Qop1-Qvop13
Very Old Surficial Units
Very old alluvial fan deposits (middle to early Pleistocene)
Very old alluvial flood-plain deposits, undivided (middle to early Pleistocene)
Unit 13
Unit 12
Unit 11
Very old colluvial deposits, undivided (middle to early Pleistocene)
Very old paralic deposits, undivided (middle to early Pleistocene)
Unit 13
Unit 12
Unit 11-12
Unit 11
Unit 10-13
Unit 10-11
Unit 10
Unit 9-10
Unit 9
Unit 8-9
Unit 8
Unit 7-8
Unit 7
Unit 5
Unit 4
Unit 3
Unit 2-3
Unit 2
Unit 1
Sedimentary and Volcanic Bedrock Units
Pauba Formation (early Pleistocene)
Qps - sandstone facies
Qpf - fanglomerate facies
Dripping Springs Formation (early Pleistocene)
Undivided sediments and sedimentary rocks in offshore region (Holocene, Pleistocene, Pliocene and Miocene)
Temecula Arkose (late Pliocene)
Niguel Formation (late Pliocene)
Undivided sedimentary rocks in offshore region (Pliocene)
Capistrano Formation (early Pliocene and late Miocene)
Tcs - siltstone facies
Tct - turbidite facies
San Mateo Formation (early Pliocene and late Miocene)
Santa Rosa basalt of Mann (1995) (late Miocene)
Dacite stock (Miocene)
Volcanic rocks, undivided (Miocene)
Basalt of Temecula area (Miocene)
Monterey Formation (middle and late Miocene)
San Onofre Breccia (middle Miocene)
Tso - breccia
Tsoss - sandstone
Topanga Formation (middle Miocene)
Undivided sedimentary rocks in offshore region (Miocene)
Undivided volcanic rocks in offshore region (Miocene)
Undivided volcanic and sedimentary rocks in offshore region (Miocene) - Tmo or Tmvo
Sespe and Vaqueros Formations, undivided (early Miocene, Oligocene and late Eocene)
Sandstone of Redonda Mesa (Paleogene)
Mission Valley Formation (middle Eocene)
Stadium Conglomerate (middle Eocene)
Friars Formation (middle Eocene)
Torrey Sandstone (middle Eocene)
Delmar Formation (middle Eocene)
Santiago Formation (middle Eocene)
Undivded Eocene rocks in the offshore area (Eocene)
Silverado Formation (Paleocene)
Point Loma Formation (Upper Cretaceous)
Williams Formation (Upper Cretaceous)
Kwp - Pleasants Sandstone Member
Kwsr - Schulz Ranch Sandstone Member
Lusardi Formation (Upper Cretaceous)
Trabuco Formation (Upper Cretaceous)
Unnamed Cretaceous Rocks of the Peninsular Ranges Batholith
Granite pegmatite dike (mid-Cretaceous)
Granite, undivided (mid-Cretaceous)
Monzogranite, undivided (mid-Cretaceous)
Granodiorite, undivided (mid-Cretaceous)
Granodiorite (fine-grained), undivided (mid-Cretaceous)
Tonalite, undivided (mid-Cretaceous)
Quartz-bearing diorite, undivided (mid-Cretaceous)
Diorite, undivided (mid-Cretaceous)
Gabbro, undivided (mid-Cretaceous)
Heterogeneous granitic rocks (Cretaceous)
Named Cretaceous Rocks of the Peninsular Ranges Batholith
Granite of Dixon Lake (mid-Cretaceous)
Granite of Bottle Peak (mid-Cretaceous)
Granite of Indian Springs (mid-Cretaceous)
Leucogranodiorite of Lake Hodges (mid-Cretaceous)
Monzogranite of Valley Center (mid-Cretaceous)
Monzogranite of Merriam Mountain (mid-Cretaceous)
Granodiorite of Woodson Mountain (mid-Cretaceous)
Granodiorite of Jesmond Dean (mid-Cretaceous)
Granodiorite of Burnt Mountain (mid-Cretaceous)
Granodiorite of Mountain Meadows (mid-Cretaceous)
Granodiorite of Rimrock (mid-Cretaceous)
Granodiorite of Indian Mountain (mid-Cretaceous)
Granodiorite of Rainbow (mid-Cretaceous)
Granodiorite of Pala (mid-Cretaceous)
Granodiorite, undivided within the Elsinore Fault Zone (mid-Cretaceous)
Tonalite of Cole Grade (mid-Cretaceous)
Tonalite of Couser Canyon (mid-Cretaceous)
Quartz-bearing diorite of Red Mountain (mid-Cretaceous)
Gabbro of the Agua Tibia Mountains (mid-Cretaceous)
Gabbro of Weaver Mountain (mid-Cretaceous)
Gabbro, undivided within the Elsinore Fault Zone (mid-Cretaceous)
Santiago Peak Volcanics (Cretaceous)
Prebatholithic and Synbatholithic Metamorphic Rocks
Metasedimentary and metavolcanic rocks, undivided (Mesozoic)
Metavolcanic dikes (Mesozoic)
Metagranitic rocks (Mesozoic)
Quartzite and quartz conglomerate (Mesozoic)
Schist with minor amphibolite and marble (Mesozoic)
ONSHORE MAP SYMBOLS
Contact
Fault
Anticline
Syncline
Kgp - Granite pegmatite dike
Closed depression
Landslide
Strike and dip of beds
Inclined
Overturned
Vertical
Horizontal
Strike and dip of igneous foliation
Inclined
Vertical
Strike and dip of igneous joints
Inclined
Vertical
Strike and dip of metamorphic foliation
Inclined
Strike and dip of sedimentary joints
Vertical
OFFSHORE MAP SYMBOLS
Contact
Faults
Fault
Cuts strata of Holocene age
Cuts strata of Pleistocene age
Cuts strata of Quaternary age
Cuts Miocene or older strata
Fault zone
Folds
Anticline
Syncline
Major Structural Features
Structural High
Channels
Active
Filled
Buried
Levees
Levees
Landslides
Creep
Creep (noted on single survey line)
Slump
Slump scarp
Erosional scarp
Block Glide
Sediment Flow
Gas
Oil and/or gas seep
Areas of acoustic anomaly


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