Preliminary digital geologic map of the Santa Ana 30' x 60' quadrangle, Southern California, version 1.0

Frequently anticipated questions:

• What does this data set describe?
  1. How might this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
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What does this data set describe?

1. How might this data set be cited?
   Morton, D.M., Hauser, Rachel M., and Ruppert, Kelly R., 1999, Preliminary digital geologic map of the Santa Ana 30' x 60' quadrangle, Southern California, version 1.0: U.S. Geological Survey Open-File Report 99-0172.

   Online Links:

   • http://pubs.usgs.gov/of/1999/of99-172/

   Other_Citation_Details: ARC/INFO export format (18MB). Plotfiles available also.
   

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -118.0
   East_Bounding_Coordinate: -117.0
   North_Bounding_Coordinate: 34.0
   South_Bounding_Coordinate: 33.50
   

3. What does it look like?

   http://pubs.usgs.gov/of/1999/of99-172/sanana2.pdf (PDF)

   PDF representation of the Santa Ana Geologic map (19 MB)

4. Does the data set describe conditions during a particular time period?

   Calendar_Date: 1999

   Currentness_Reference:

   publication date

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: map
   

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?
      This is a vector data set. It contains the following vector data types (SDTS terminology):
      • Entity point
      • complete chain
      • GT-polygon composed of chains
   2. What coordinate system is used to represent geographic features?
      

      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:

      UTM_Zone_Number: 11
      Transverse_Mercator:

      Scale_Factor_at_Central_Meridian: 0.9996
      Longitude_of_Central_Meridian: -117
      Latitude_of_Projection_Origin: 0.0
      False_Easting: 500000
      False_Northing: 0.0
      

      The horizontal datum used is NAD27.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.
      The flattening of the ellipsoid used is 1/294.98.
      
7. How does the data set describe geographic features?

   SA_GEOL.PAT

   Geologic map units of the Santa Ana quadrangle (Source: OFR-99-0172)

   PTYPE and PLABL

   Map unit symbol (Source: OFR-99-0172)

   Value	Definition
   Qaf	Artificial fill (late Holocene)
   Qw	Wash deposits (late Holocene)
   Qf	Alluvial fan deposits (late Holocene)
   Qa	Active axial channel deposits (late Holocene)
   Qv	Active valley deposits (late Holocene)
   Qc	Colluvium (late Holocene)
   Qls	Landslide deposits (late Holocene)
   Qe	Eolian deposits (late Holocene)
   Qm	Marine deposits (late Holocene)
   Qes	Estuarine deposits (late Holocene)
   Ql	Lacustrine deposits (late Holocene)
   Qlv	Lacustrine and fluvial deposits (late Holocene)
   Qyw	Young alluvial wash deposits (Holocene and latest Pleistocene)
   Qyf	Young alluvial fan deposits (Holocene and latest Pleistocene)
   Qyf4	Young alluvial fan deposits, Unit 4 (late Holocene and latest Pleistocene)
   Qyf3	Young alluvial fan deposits, Unit 3 (late and middle Holocene)
   Qyf2	Young alluvial fan deposits, Unit 2 (early Holocene)
   Qyf1	Young alluvial fan deposits, Unit 1 (early Holocene and late Pleistocene)
   Qya	Young axial channel deposits (Holocene and latest Pleistocene)
   Qyv	Young alluvial valley deposits (Holocene and late Pleistocene)
   Qyv1	Young alluvial valley deposits, Unit 1 (early Holocene and late Pleistocene)
   Qyls	Young landslide (Holocene and latest Pleistocene)
   Qye	Young eolian deposits (Holocene and latest Pleistocene)
   Qypt	Young peat deposits (Holocene)
   Qow	Old alluvial wash deposits (late to middle Pleistocene)
   Qof	Old alluvial fan deposits (late to middle Pleistocene)
   Qof1	Old alluvial fan deposits, Unit 1 (late to middle Pleistocene)
   Qofv	Old alluvial fan deposits and young alluvial valley deposits (Holocene and late to middle Pleistocene)
   Qoa	Old axial channel deposits (late to middle Pleistocene)
   Qoa1	Old axial channel deposits, Unit 1 (middle Pleistocene)
   Qov	Old alluvial valley deposits (late to middle Pleistocene)
   Qoc	Old colluvial deposits (late to middle Pleistocene)
   Qols	Old landslide deposits (late to middle Pleistocene)
   Qom	Old marine deposits (late to middle Pleistocene)
   Qvof	Very old alluvial fan deposits (middle to early Pleistocene)
   Qvof2	Very old alluvial fan deposits, Unit 2 (early Pleistocene)
   Qvof1	Very old alluvial fan deposits, Unit 1 (early Pleistocene)
   Qvoa	Very old axial channel deposits (middle to early Pleistocene)
   Qvoa2	Very old axial channel deposits, Unit 2 (early Pleistocene)
   Qvoa1	Very old axial channel deposits, Unit 1 (early Pleistocene)
   Qvols	Very old landslide deposits (middle to early Pleistocene)
   Qvom	Very old marine deposits (middle to early Pleistocene)
   Qr	Regolith (Pleistocene)
   Qpf	Pauba Formation (Pleistocene)
   Qpfs	Sandstone member
   Qpff	Fanglomerate member
   Qlh	La Habra Formation (Pleistocene)
   Qch	Coyote Hills Formation (Pleistocene)
   Qsp	San Pedro Formation (Pleistocene)
   QTsw	Sandstone unit: Sandstone and conglomerate of Wildomar area (Pleistocene and Pliocene)
   QTcw	Conglomerate unit: Sandstone and conglomerate of Wildomar area (Pleistocene and Pliocene)
   QTs	Unnamed late Cenozoic sedimentary rocks in Riverside and Corona areas (early Pleistocene to late Pliocene?)
   QTt	Late Cenozoic conglomerate of Temescal area (early Pleistocene to late Pliocene?)
   QTc	Conglomeratic sedimentary rocks of Riverside West 7.5' quadrangle (early Pleistocene to late Pliocene?)
   QTn	Late Cenozoic sedimentary rocks of Norco area (early Pleistocene to late Pliocene?)
   QTstu	Upper member (Pleistocene): San Timoteo beds of Frick (1921) (Pleistocene and Pliocene)
   QTsts	Conglomeratic sandstone beds: San Timoteo beds of Frick (1921) (Pleistocene and Pliocene)
   QTstc	Quartzite-bearing conglomerate beds: San Timoteo beds of Frick (1921) (Pleistocene and Pliocene)
   Tstm	Middle member (Pliocene): San Timoteo beds of Frick (1921) (Pleistocene and Pliocene)
   Tstl	Lower member (Pliocene): San Timoteo beds of Frick (1921) (Pleistocene and Pliocene)
   Tta	Temecula Arkose (Pliocene)
   Tf	Fernando Formation (Pliocene)
   Tfu	Upper Member: Fernando Formation (Pliocene)
   Tfl	Lower Member: Fernando Formation (Pliocene)
   Tn	Niguel Formation (Pliocene)
   Tns	Sandstone of Norco area (Pliocene)
   Tc	Capistrano Formation (early Pliocene and Miocene)
   Tco	Oso Member: Capistrano Formation (early Pliocene and Miocene)
   Tcs	Siltstone facies: Capistrano Formation (early Pliocene and Miocene)
   Tmeus	Upper sandstone member (early Pliocene and Miocene): Mount Eden Formation of Fraser (1931) (early Pliocene and Miocene)
   Tmem	Mudrock member (early Pliocene and Miocene): Mount Eden Formation of Fraser (1931) (early Pliocene and Miocene)
   Tmels	Lower sandstone member (Miocene): Mount Eden Formation of Fraser (1931) (early Pliocene and Miocene)
   Tmea	Arkosic sandstone member (Miocene): Mount Eden Formation of Fraser (1931) (early Pliocene and Miocene)
   Tmec	Conglomeratic sandstone member (Miocene): Mount Eden Formation of Fraser (1931) (early Pliocene and Miocene)
   Tch	Sandstone and conglomerate in southeastern Chino Hills (early Pliocene and Miocene)
   Tp	Puente Formation (early Pliocene and Miocene)
   Tpsc	Sycamore Canyon Member (early Pliocene and Miocene)
   Tpy	Yorba Member (Miocene)
   Tps	Soquel Member (Miocene)
   Tplv	La Vida Member (Miocene)
   Tlm	Lake Mathews Formation (Miocene)
   Tcgr	Rhyolite clast conglomerate of Lake Mathews area (Miocene?)
   Tcg	Conglomerate of Lake Mathews area (Miocene?)
   Tm	Monterey Formation (Miocene)
   Tvsr	Santa Rosa basalt of Mann (1955) (Miocene)
   Tvt	Basalt of Temecula area (Miocene)
   Tvh	Basalt of Hogbacks (Miocene)
   Tvep	Basalt of Elsinore Peak (Miocene)
   Tsob	San Onofre Breccia (middle Miocene)
   Tt	Topanga Formation (middle Miocene)
   Ttp	Paulerino Member: Topanga Formation (middle Miocene)
   Ttlt	Los Trancos Member: Topanga Formation (middle Miocene)
   Ttb	Bommer Member: Topanga Formation (middle Miocene)
   Tvem	El Modeno Volcanics (middle Miocene)
   Tvema	Andesitic volcanic rocks: El Modeno Volcanics (middle Miocene)
   Tvemt	Tuff and tuff breccia: El Modeno Volcanics (middle Miocene)
   Tvemb	Basalt: El Modeno Volcanics (middle Miocene)
   Ta	Andesitic intrusive rocks (middle Miocene): Volcanic intrusive rocks associated with El Modeno Volcanics (middle Miocene)
   Td	Diabase intrusive rocks (middle Miocene): Volcanic intrusive rocks associated with El Modeno Volcanics (middle Miocene)
   Tvss	Vaqueros, Sespe, Santiago, and Silverado Formations, undivided (early Miocene, Oligocene, and Paleocene)
   Tv	Vaqueros Formation (early Miocene, Oligocene, and late Eocene)
   Ts	Sespe Formation (early Miocene, Oligocene, and late Eocene)
   Tvs	Sespe and Vaqueros Formations, undifferentiated (early Miocene, Oligocene, and late Eocene)
   Tcga	Conglomerate of Arlington Mountain (Paleogene?)
   Tep	Sandstone of Elsinore Peak (Paleogene?)
   Tsa	Santiago Formation (middle Eocene)
   Tsi	Silverado Formation (Paleocene)
   Kwl	Williams and Ladd Formations, undifferentiated (upper Cretaceous)
   Kw	Williams Formation (upper Cretaceous)
   Kwps	Pleasants Sandstone Member: Williams Formation (upper Cretaceous)
   Kwsr	Schulz Ranch Sandstone Member: Williams Formation (upper Cretaceous)
   Kwst	Starr Member: Williams Formation (upper Cretaceous)
   Kl	Ladd Formation (upper Cretaceous)
   Klhs	Holz Shale Member: Ladd Formation (upper Cretaceous)
   Klbc	Baker Canyon Conglomerate Member (upper Cretaceous): Ladd Formation (upper Cretaceous)
   Ktr	Trabuco Formation (upper Cretaceous)
   Klct	Tonalite of Lamb Canyon (Cretaceous)
   Kmeg	Granite of Mount Eden (Cretaceous)
   Kthgd	Granodiorite of Tucalota Hills (Cretaceous)
   Klt	Tonalite near mouth of Laborde Canyon (Cretaceous)
   Khqd	Hypersthene quartz diorite (Cretaceous)
   Ktcg	Monzogranite of Tres Cerritos (Cretaceous)
   Kp	Pegmatite dikes: Lakeview Mountains pluton (Cretaceous)
   Klmt	Tonalite: Lakeview Mountains pluton (Cretaceous)
   Klml	Leucocratic rocks: Lakeview Mountains pluton (Cretaceous)
   Klmm	Melanocratic rocks: Lakeview Mountains pluton (Cretaceous)
   Klmc	Comb-layered gabbro: Lakeview Mountains pluton (Cretaceous)
   Klmg	Hypersthene hornblende gabbro: Lakeview Mountains pluton (Cretaceous)
   Klmtg	Lakeview Mountains tonalite and granodiorite, undifferentiated: Lakeview Mountains pluton (Cretaceous)
   Krct	Tonalite of Reinhardt Canyon pluton (Cretaceous)
   Kbpg	Monzogranite of Bernasconi Pass (Cretaceous)
   Kbpm	Migmatitic rock within Monzogranite of Bernasconi Pass: Monzogranite of Bernasconi Pass (Cretaceous)
   Ktbh	Tonalite of Bernasconi Hills (Cretaceous)
   Kp	Granitic pegmatite dikes: Box Springs plutonic complex (Cretaceous)
   Kbt	Biotite tonalite: Box Springs plutonic complex (Cretaceous)
   Kbfg	Biotite granodiorite and tonalite: Box Springs plutonic complex (Cretaceous)
   Kbfgi	Biotite granodiorite and tonalite containing abundant inclusions: Box Springs plutonic complex (Cretaceous)
   Kbhg	Heterogeneous porphyritic granodiorite: Box Springs plutonic complex (Cretaceous)
   Kbhgl	Layered heterogeneous porphyritic granodiorite: Box Springs plutonic complex (Cretaceous)
   Kbg	Porphyritic granodiorite: Box Springs plutonic complex (Cretaceous)
   Kbft	Biotite-hornblende tonalite: Box Springs plutonic complex (Cretaceous)
   Kbht	Heterogeneous biotite tonalite: Box Springs plutonic complex (Cretaceous)
   Kbgt	Heterogeneous granodiorite and tonalite: Box Springs plutonic complex (Cretaceous)
   Kba	Amphibolitic gabbro: Box Springs plutonic complex (Cretaceous)
   Kvt	Val Verde tonalite: Val Verde pluton (Cretaceous)
   Kvtk	Potassium feldspar-bearing tonalite: Val Verde pluton (Cretaceous)
   Kvti	Inclusion-rich tonalite: Val Verde pluton (Cretaceous)
   Kgr	Granophyre (Cretaceous)
   Kgab	Heterogeneous mixture of olivine, pyroxene, and hornblende gabbros: Green Acres gabbro complex (Cretaceous)
   Kgao	Olivine gabbro: Green Acres gabbro complex (Cretaceous)
   Kgah	Hornblende-rich gabbro: Green Acres gabbro complex (Cretaceous)
   Kgat	Troctolite: Green Acres gabbro complex (Cretaceous)
   Kgaa	Anorthositic gabbro: Green Acres gabbro complex (Cretaceous)
   Kgam	Metagabbro: Green Acres gabbro complex (Cretaceous)
   Kgg	Hypersthene monzogranite: Gavilan ring complex (Cretaceous)
   Kgt	Massive textured tonalite: Gavilan ring complex (Cretaceous)
   Kgtf	Foliated tonalite: Gavilan ring complex (Cretaceous)
   Kgti	Tonalite containing abundant mesocratic inclusions: Gavilan ring complex (Cretaceous)
   Kgh	Hypabyssal tonalite: Gavilan ring complex (Cretaceous)
   Kgct	Coarse-grained biotite-hornblende tonalite: Gavilan ring complex (Cretaceous)
   Kght	Heterogeneous tonalite: Gavilan ring complex (Cretaceous)
   Kmp	Micropegmatite granite (Cretaceous)
   Kmpc	Micropegmatite and granodiorite of Cajalco pluton, undifferentiated (Cretaceous)
   Ktd	Tonalite dikes of Mount Rubidoux (Cretaceous)
   Kmrg	Granite of Mount Rubidoux (Cretaceous)
   Krg	Granite of the Riverside area (Cretaceous)
   Kmhg	Mount Hole Granodiorite (Cretaceous)
   Klst	La Sierra Tonalite (Cretaceous)
   Katg	Granodiorite of Arroyo del Toro pluton (Cretaceous)
   Kcto	Tourmalized monzogranite and granodiorite: Cajalco pluton (Cretaceous)
   Kcg	Monzogranite: Cajalco pluton (Cretaceous)
   Kcgd	Granodiorite: Cajalco pluton (Cretaceous)
   Kct	Tonalite: Cajalco pluton (Cretaceous)
   Kcgq	Granodiorite and quartz latite, undifferentiated: Cajalco pluton (Cretaceous)
   Kcgb	Granodiorite and gabbro, undifferentiated: Cajalco pluton (Cretaceous)
   Kld	Quartz latite dikes: Domenigoni Valley pluton (Cretaceous)
   Kdvg	Granodiorite to tonalite of Domenigoni Valley: Domenigoni Valley pluton (Cretaceous)
   Kgbf	Fine grained hornblende gabbro, Railroad Canyon area (Cretaceous): Domenigoni Valley pluton (Cretaceous)
   Kpvgr	Granophyre: Paloma Valley Ring Complex (Cretaceous)
   Kp	Pegmatite dikes of Paloma Valley Ring Complex: Paloma Valley Ring Complex (Cretaceous)
   Kpvg	Monzogranite to granodiorite: Paloma Valley Ring Complex (Cretaceous)
   Kpvt	Tonalite: Paloma Valley Ring Complex (Cretaceous)
   Kpvgb	Granodiorite and gabbro, undivided: Paloma Valley Ring Complex (Cretaceous)
   Ksmg	Monzogranite of Squaw Mountain (Cretaceous)
   Kts	Tonalite of Slaughterhouse Canyon (Cretaceous)
   Kp	Granitic Pegmatite dikes (Cretaceous)
   Kg	Granitic dikes. (Cretaceous)
   Kgu	Undifferentiated granite (Cretaceous
   Kgd	Granodiorite, undifferentiated (Cretaceous)
   Kt	Tonalite, undifferentiated (Cretaceous)
   Ktm	Tonalite and mafic rock, undifferentiated (Cretaceous)
   Kqd	Quartz diorite (Cretaceous)
   Kdqd	Diorite and quartz diorite, undifferentiated (Cretaceous)
   Kd	Diorite, undifferentiated (Cretaceous)
   Kgb	Gabbro (Cretaceous)
   Khg	Heterogeneous granitic rocks (Cretaceous)
   Ks	Serpentinite (Cretaceous)
   Kc	Carbonate-silicate rock (Cretaceous)
   Kvsp	Santiago Peak Volcanics (Cretaceous)
   Kvspi	Intrusive rocks associated with Santiago Peak Volcanics (Cretaceous)
   Kvem	Estelle Mountain volcanics of Herzig (1991) (Cretaceous)
   Kvr	Rhyolite of Estelle Mountains volcanics of Herzig (1991) (Cretaceous)
   Ksv	Intermixed Estelle Mountain volcanics of Herzig (1991) and Cretaceous(?) sedimentary rocks (Cretaceous?)
   Kvs	Intermixed Estelle Mountain volcanics of Herzig (1991) and Mesozoic sedimentary rocks (Mesozoic)
   Mzmg	Mylonitic and cataclastic granitic rocks: Deformed granitic rocks of Transverse Ranges Province (Mesozoic)
   Mzd	Diorite: Deformed granitic rocks of Transverse Ranges Province (Mesozoic)
   Jbc	Bedford Canyon Formation (Jurassic)
   Jbm	Marble (limestone)
   Mzu	Mesozoic metasedimentary rocks, undifferentiated (Mesozoic)
   Mzg	Graywacke (Mesozoic)
   Mzq	Quartz-rich rocks (Mesozoic)
   Mzqg	Intermixed quartzite and graywacke (Mesozoic)
   Mzgp	Intermixed graywacke and phyllite (Mesozoic)
   Mzp	Phyllite (Mesozoic)
   Mzs	Schist (Mesozoic)
   Mzm	Marble (Mesozoic)
   Mzi	Interlayered phyllite (or schist) and quartzite (Mesozoic)
   Mzds	Metadunite and serpentinite (Mesozoic)
   Mzdx	Amphibole- and pyroxene-bearing rocks associated with metadunite-serpentinite (Mesozoic)
   Mzdc	Marble associated with metadunite (Mesozoic)
   Mzmn	Manganese-bearing rocks (Mesozoic)
   Pzu	Paleozoic(?) rocks, undifferentiated (Paleozoic?)
   Pzs	Biotite Schist (Paleozoic?)
   Pzq	Impure quartzite (Paleozoic?)
   Pzm	Marble (Paleozoic?)
   Pzc	Calc-silicate rocks (Paleozoic?)
   Pzms	Marble and schist, undivided (Paleozoic?)
   Pza	Amphibolite (Paleozoic?)
   KgMz	Intermixed Mesozoic schist and Cretaceous granitic rocks (Mesozoic)
   KgPz	Intermixed Paleozoic(?) schist and Cretaceous granitic rocks (Mesozoic and Paleozoic?)

   SHD

   Color shade for printing purposes (Source: OFR-99-0172)

   Range of values
   Minimum:	0
   Maximum:	939

   SA_GEOL.AAT

   Linear geologic features (Source: OFR-99-0172)

   LTYPE

   line type (Source: OFR-99-0172)

   Value	Definition
   Kcto	Kcto dike
   Kg	Kg dike
   Kgbd	Kgbd dike
   Kld	Kld dike
   Kp	Kp dike
   Kvspi	Kvspi dike
   Mzmn	Mzmn dike
   contact, certain	Observed contact
   fault, certain	Observed fault
   fault, approx. located	Fault whose position is not precisely known
   fault, concealed	Concealed fault whose position is inferred
   fault, queried	fault, location or existence uncertain
   ground fissure	Observed ground fissure
   map boundary	boundary of quadrangle
   scratch boundary	scratch boundary
   suture	Probable suture, approximately located
   water boundary	Boundaries of bodies of water

   SA-GEOL.PAT

   Point attributes of map units (same attributes as the polygon coverage SA_GEOL.PAT) (Source: OFR-99-0172)

   SA_HYDR.PAT

   Mapped bodies of water (Source: OFR-99-0172)

   PTYPE

   Polygon type (Source: OFR-99-0172)

   Value	Definition
   bays, estuaries, gulfs, oceans, seas
   duck pond
   gravle pit or quarry; filled with water
   intermittent lake or pond
   inundation area
   lake or pond
   navigatable, transportation, bays, estuaries, gulfs, oceans, seas
   reservoir
   void area	unmapped area
   water surface elevation; 241 m; reservoir
   water surface elevation; 376m; lake or pond
   water surface elevation; 420m; reservoir; interpolated elevation
   water surface elevation; 424m; lake or pond
   water surface elevation; 433m

   SA_HYDR.PAT

   Hydrology at specific points (same attributes as the polygon coverage SA_HYDR.PAT) (Source: OFR-99-0172)

   SA_HYPS.AAT

   Topography contour lines (Source: OFR-99-0172)

   LTYPE

   Line type (Source: OFR-99-0172)

   Value	Definition
   contour	contour (50m)
   depression contour	depression contour (50m)
   index contour	index contour (250m)
   index contour and label	index contour (250m) with associated label
   map boundary	boundary of mapped quadrangle

   ELEV

   Elevation of contour line (Source: OFR-99-0172)

   Range of values
   Minimum:	0
   Maximum:	1700
   Units:	meters
   Resolution:	50

   SA_POINT.AAT

   Fold axes (Source: OFR-99-0172)

   LTYPE

   Line type (Source: OFR-99-0172)

   Value	Definition
   fold axis, approx. located	Fold axis whose position is not precisely known
   fold axis, certain	observed fold axis
   fold axis, concealed	Fold axis that is concealed and position inferred

   SA_POINT.PAT

   Fold axis ornamentation (Source: OFR-99-0172)

   PTTYPE

   Point type (Source: OFR-99-0172)

   Value	Definition
   anticline symbol	symbol for anticline fold axis
   direction of plunge	plunge of fold axis symbol
   overturned syncline	Overturned syncline symbol
   syncline symbol	symbol for syncline fold axis

   STRIKE

   Stike of fold axes (Source: OFR-99-0172)

   Range of values
   Minimum:	11
   Maximum:	354
   Units:	degrees
   Resolution:	1

   SA_STRUC.PAT

   Attitudes and their dip values. Dip values plotted as annotation. Map boundary lines. (Source: OFR-99-0172)

   PTTYPE

   Point type (Source: OFR-99-0172)

   Value	Definition
   bedding
   dip of fault surface
   horizontal bedding
   igneous foliation
   lineation
   lineation of attitude
   metamorphic foliation
   metamorphic vertical foliation
   overturned bedding
   vertical bedding
   vertical igneous foliation

   DIP

   Dip attitudes (Source: OFR-99-0172)

   Range of values
   Minimum:	0
   Maximum:	90
   Units:	degrees
   Resolution:	1

   STRIKE

   Strike attitudes (Source: OFR-99-0172)

   Range of values
   Minimum:	0
   Maximum:	359
   Units:	degrees
   Resolution:	1

   SA_TRANS.AAT

   Roads (for more information see a road map) (Source: OFR-99-0172)

   Entity_and_Attribute_Overview:

   Attributes for coverage SA_HYDR.AAT:
   aqueduct
   closure line
   coincident feature; intermittent ditch
   ditch or canal
   ditch of canal; underpass; closure line
   indefinite shoreline
   intermittent
   intermittent aqueduct; coincident feature 30
   intermittent ditch of canal
   intermittent shoreline
   intermittent stream
   intermittent stream; coincident feature 9
   intermittent stream; underground, closure line
   intermittent stream; underpass; closure line
   intermittent underground aqueduct
   manmade shoreline
   map boundary
   shoreline
   shoreline; coincident feature
   siphon
   stream
   stream; coincident feature 9
   stream; underpass closure line
   tunnel; aqueduct
   tunnel; ditch of canal
   underground aqueduct
   underground aqueduct; coincident feature 17
   underground aqueduct; incident feature
   underground aqueduct; tunnel
   underground closure line
   underground ditch or canal
   underground tunnel; aqueduct
   underpass; closure line; ditch or canal
   underpass; ditch or canal; closure line
   wash or ephemeral
   wash or ephemeral drain
   wash or ephemeral drain; underpass closure line
   water surface elevation 420m; lake; interpolated elevation
   

   Explanation for the Santa Ana 30' X 60' quadrangle:
   A question mark (?) indicates the idenity of a map unit or age of a unit is uncertain. For units submerged below the present day water level of Lake Perris, an (s) follows the unit symbol. The subscripts used for relative age subdivisions of some Quaternary deposits designate decreasing age by increasing numbers, e.g. Qyf4 is younger than Qyf3. Where known, grain size is indicated by a subscripted letter or letters following unit symbols as follows: b, boulder; g, gravel; a, arenaceous; s, silt, c, clay; e.g. Qyfa is a predominately sandy young alluvial fan deposit. Multiple letters are used for more specific identification or for mixed units, e.g., Qyfsa is a silty sand. In some cases, mixed units are indicated by a compound symbol; e.g., Qyf2sc. Marine deposits are in part overlain by local, mostly alluvial fan, deposits and are labeled Qomf. Grain size follows f. The Ma following U/Pb ages has an attached subscript; Maid for isotope dilution analyses, and Maip for ion probe analyses.

   Entity_and_Attribute_Detail_Citation: http://pubs.usgs.gov/of/1999/of99-172/sanana2dmu.doc
   

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • D.M. Morton
   • Rachel M. Hauser
   • Kelly R. Ruppert
2. Who also contributed to the data set?
3. To whom should users address questions about the data?
   D.M. Morton

   US Geological Survey

   Western Region Geologic Mapping Team

   US Geological Survey

   Department of Earth Sciences, University of California

   Riverside, CA
   

   USA

Why was the data set created?

To provide the public with access to the digital geologic map of the 30' X 60' Santa Ana Quadrangle

How was the data set created?

1. From what previous works were the data drawn?

   Jahns (1954) (source 1 of 2)

   Jahns, R.H., 1954, Geology of the Peninsular Ranges Province, southern California and Baja California: California Division of Mines and Geology Bulletin 170.

   Other_Citation_Details: Chapter 2, p. 29-52
   

   Type_of_Source_Media: paper
   Source_Contribution:

   Summarized the general geology of the Peninsulr Ranges Province which includes the Santa Ana Quadrangle.

   Rogers (1965) (source 2 of 2)

   Rogers, T.H., 1965, Santa Ana sheet: California Division of Mines and Geology Geologic Map of California.

   Type_of_Source_Media: paper
   Source_Scale_Denominator: 250000
   Source_Contribution:

   Published a generalized geologic map of this part of the Peninsular Ranges Province.

2. How were the data generated, processed, and modified?

   (process 1 of 2)

   The geologic map was compiled from 31 1:24,000 7.5' quadrangles were mapped and (or) compiled chiefly at 1:24,000 scale. The compilation at 1:100,000 scale entailed necessary simplification in some areas and combining of some geologic units. Overall, however, despite a greater than four times reduction in scale, most geologic detail found on the 1:24,000 maps is retained on the 1:100,000 map. Geologic contacts across boundaries of the 31 constituent quadrangles required adjustments, but none significantly larger scale maps, the 1:100,000 scale compilation in this report is intended for use at that scale; digital or plotted enlargements of all or part of the map were not intended and could result in misleading map data. Lines, points, and polygons were edited using standard ARC/INFO commands, and in some places, interactively by hand using graphical user interface ALACARTE (Fitzbibbon, 1991, Fitzgibbon and Wentworth, 1991, Wentworth and Fitzgibbon, 1991). Digitizing and editing artifacts significant enough to display at a scale of 1:100,000 were corrected.

   Date: 08-Jun-2009 (process 2 of 2)

   Creation of original metadata record Person who carried out this activity:
   

   Jennifer Lenz

   US Geological Survey

   12201 Surise Valley Drive, Mail Stop 918

   Reston, VA
   

   USA

   703-648-6974 (voice)

   703-648-6560 (FAX)

   pschweitzer@usgs.gov

3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

1. How well have the observations been checked?
   All contacts on the geologic map are shown as solid lines. Until uniform National geologic map accuracy standards are developed and adopted, lines and points on SCAMP 1:100,000 scale geologic maps that are located to within 50 meters, relative to accurates located features on the base map, are considered to meet map accuracy standards. Published and unpublished mapping by the compiler are known to generally meet this map accuracy standard. Most, but not all, mapping compiled from other sources is known to generally meet this map accuracy standard.
2. How accurate are the geographic locations?
   
3. How accurate are the heights or depths?
   
4. Where are the gaps in the data? What is missing?
   complete
5. How consistent are the relationships among the observations, including topology?
   This geologic map was compiled from multiple sources and were made to be as consisent as possible.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: none
Use_Constraints: none

1. Who distributes the data set? (Distributor 1 of 1)
   
   U.S. Geological Survey Information Services

   Box 25248, Denver Federal Center

   Denver, CO
   

   USA

   1-888-ASK-USGS (voice)

   1-303-202-4693 (FAX)

   infoservices@usgs.gov
2. What's the catalog number I need to order this data set? USGS Open-File Report 99-0172
3. What legal disclaimers am I supposed to read?

   This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
   This database, identified as "Preliminary digital geologic map of the Santa Ana 30' x 60' quadrangle, Southern California, Version 1.0" has been approved for release and publication by the Director of the USGS. Although this database has been reviewed and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. This database is released on condition that neither the USGS nor the U. S. Government may be held liable for any damages resulting from its use.

4. How can I download or order the data?
   • Availability in digital form:

     Data format:

     ARC/INFO coverages sa_geol: Contacts, faults, geologic unit labels sa_struc: Attitudes and their dip values. Dip values plotted as annotation. Map boundary lines. sa_point: Fold axes and line ornamentation symbols. sa_anno: Annotations and leaders for unit labels. sa_hydr: Water bodies. sa_hyps: Topography. sa_trans: Roads, cultural information. in format ARCE (version ARC/INFO version 7.1.1 produced the export files) Size: 17

     Network links:

     http://pubs.usgs.gov/of/1999/of99-172/sanana2.zip

   • Cost to order the data: none

   • Availability in non-digital form:
     This map can be downloaded as a 6MB PDF file from http://pubs.usgs.gov/of/1999/of99-172/sanana2.pdf
   • Cost to order the data: none

Who wrote the metadata?

Dates:

Last modified: 05-Feb-2016

Metadata author:

Peter N Schweitzer

USGS Midwest Area

Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/

Mail Stop 954

12201 Sunrise Valley Dr

Reston, VA

USA

703-648-6533 (voice)

703-648-6252 (FAX)

pschweitzer@usgs.gov

Metadata standard:

Content for Digital Geospatial Metadata (FGDC-STD-001-1998)