Identification_Information: Citation: Citation_Information: Originator: Robert F. Yerkes Originator: Russell H. Campbell Publication_Date: 2005 Title: Preliminary Geologic Map of the Los Angeles 30' x 60' Quadrangle, Southern California Edition: Version 1.0, 2005 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: USGS OF2005-1019 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2005/1019 Description: Abstract: This data set maps and describes the geology of the Los Angeles 30’ x 60’ quadrangle, southern California. Compilation of the Los Angeles quadrangle is based upon published mapping at scales of 1:12,000 and smaller, unpublished mapping at scales of 1:12,000 and smaller, with reconnaissance mapping by the compilers to resolve some edge-matching problems. The Los Angeles 30’ x 60’ quadrangle covers approximately 5,000 km2 including some of the most densely populated urban and suburban areas of the southern California megalopolis. It extends about 90 km E-W and about 55 km N-S, from Fillmore and Thousand Oaks in the west to Vincent in the northeast and Montebello in the southeast, and includes urban San Gabriel Valley and San Gabriel Mountain foothill communities from Monrovia to Pasadena, as well as Glendale, downtown Los Angeles, Hollywood, Santa Monica, Malibu, in addition to all the communities in the San Fernando Valley, Simi Valley, and the upper Santa Clara River Valley. From the 2000 Census, the population of these urban and suburban areas totals approximately 5.6 million, and estimates of property value total hundreds of billions of dollars. Residents and transient visitors are subject to potential hazards from earthquakes, debris flows and other landslides, floods, wildfires, subsidence from ground water and petroleum withdrawal, and swelling soils; and coastal areas are exposed to flooding and erosion by storm and tsunami waves. Topographic relief ranges from about one hundred meters sub sea (in Santa Monica Bay) to more than 2,000 meters above sea level at Pacifico Mountain in the high San Gabriel Mountains. In addition to the populated area, the quadrangle includes significant areas of wilderness in the Angeles and Los Padres National Forests, in the Santa Monica Mountains National Recreation Area, and the Sespe Condor Sanctuary. The geologic map illustrates the general distribution of the rocks and surficial deposits in the area and their structural and stratigraphic relations to one another. The principal characteristics of the map units are described and are part of the database. The map provides a regional geologic framework as an aid to better evaluations of the potential for hazard from active earth processes. It synthesizes and combines studies by many earth scientists. Most of the source maps are at more detailed scales than 1:100,000, and we utilized the most detailed source materials available. We have not attempted to resolve all problems of stratigraphic correlation and nomenclature. In most areas we have retained the unit designations of source-map authors, but in some areas, particularly in the igneous-metamorphic complex of the San Gabriel Mountains, some unit designations have been changed. Hopefully, this map will stimulate further work to describe and correlate the many units within the scope of a more coherent, more accurate geologic history. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2005 Currentness_Reference: New data Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -119.01181904 East_Bounding_Coordinate: -117.9941032 North_Bounding_Coordinate: 34.51228096 South_Bounding_Coordinate: 33.98780991 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Geologic map Theme_Keyword: Geology Theme_Keyword: Bedrock geology Theme_Keyword: Surficial geology Theme_Keyword: Fault Theme_Keyword: Transverse Ranges Province Theme_Keyword: Peninsular Ranges Province Theme_Keyword: San Gabriel Mountains Theme_Keyword: Santa Monica Mountains Theme_Keyword: San Fernando Valley Theme_Keyword: Simi Hills Theme_Keyword: Santa Susana Mountains Theme_Keyword: Topatopa Mountains Theme_Keyword: Los Angeles Basin Theme_Keyword: eastern Ventura Basin Place: Place_Keyword_Thesaurus: None Place_Keyword: California Place_Keyword: Los Angeles County Place_Keyword: Ventura County Place_Keyword: Los Angeles 30' x 60' quadrangle Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: Cratonic metamorphic basement Stratum_Keyword: Cratonic igneous basement Stratum_Keyword: Pre-Cambrian Stratum_Keyword: Paleozoic metamorphic rocks Stratum_Keyword: Paleozoic plutonic rocks Stratum_Keyword: Mesozoic metamorphic rocks Stratum_Keyword: Mesozoic plutonic rocks Stratum_Keyword: Jurassic oceanic metamorphic basement Stratum_Keyword: Late Cretaceous marine sedimentary rocks Stratum_Keyword: Paleogene marine sedimentary rocks Stratum_Keyword: Paleogene nonmarine sedimentary rocks Stratum_Keyword: Middle Miocene marine sedimentary rocks Stratum_Keyword: Middle Miocene volcanic rocks Stratum_Keyword: Late Miocene through Pliocene marine sedimentary rocks Stratum_Keyword: Nonmarine late Pliocene strata Stratum_Keyword: Nonmarine Pleistocene strata Stratum_Keyword: Pleistocene marine terrace deposits Stratum_Keyword: Nonmarine surficial materials Access_Constraints: None Use_Constraints: The Los Angeles 30' x 60' geologic-map database should be used to evaluate and understand the geologic character of the Los Angeles quadrangle as a whole. The data should not be used for purposes of site-specific land-use planning or site-specific geologic evaluations. The database is sufficiently detailed to identify and characterize many actual and potential geologic hazards represented by faults and landslides and posed by ground subsidence and earthquake-generated ground shaking. However, it is not sufficiently detailed for site-specific determinations or evaluations of these features. Faults shown do not take the place of fault-rupture hazard zones designated by the California State Geologist (see Hart, 1988). Use of this digital geologic-map database should not violate the spatial resolution of the data. Although the digital form of the data removes the constraint imposed by the scale of a paper map, the detail and accuracy inherent in map scale are also present in the digital data. The fact that this database was compiled and edited at a scale of 1:100,000 means that higher resolution information may not have been uniformly retained in the dataset. Plotting at scales larger than 1:100,000 will not yield greater real detail, although it may reveal fine-scale irregularities below the intended resolution of the database. Similarly, although higher resolution data is incorporated in the map, the resolution of the combined output will be limited by the lower resolution data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Russell H. Campbell Contact_Organization: U.S. Geological Survey, Western Region, Earth Surface Processes Team Contact_Position: Geologist Emeritus Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey Address: Department of Earth Sciences Address: University of California, Riverside City: Riverside State_or_Province: California Postal_Code: 92521 Country: USA Contact_Voice_Telephone: (951) 276-6397 Contact_Facsimile_Telephone: (951) 276-6295 Contact_Electronic_Mail_Address: scamp@usgs.gov Data_Set_Credit: Technical review by F.K. Miller and D.M. Morton led to significant improvements that eventually were reflected in aspects of the database, the plot file, and in the description of the geologic units of the Los Angeles 30' x 60' quadrangle. Geologic mapping and digital preparation of this report were sponsored jointly by (1) the National Cooperative Geologic Mapping Program of the U.S. Geological Survey, (2) the California Geological Survey, and (3) the Southern California Areal Mapping Project (SCAMP). Native_Data_Set_Environment: Windows_NT, 5.1, Intel ARC/INFO version 8.2 Cross_Reference: Citation_Information: Originator: Crouch, J.K. Publication_Date: 1979 Title: Neogene tectonic evolution of the California continental borderland and western Transverse Ranges Edition: Volume 90, Number 4 Geospatial_Data_Presentation_Form: bulletin Series_Information: Series_Name: Geological Society of America Bulletin Publication_Information: Publisher: Geological Society of America Cross_Reference: Citation_Information: Originator: Durrell, Cordell Publication_Date: 1954 Title: Geology of the Santa Monica Mountains, Los Angeles and Ventura Counties, Map Sheet 8 Edition: bulletin 170 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: California Division of Mines Bulletin Publication_Information: Publication_Place: California Publisher: California Division of Mines Other_Citation_Details: in, Jahns, R.H., 1954, ed., Geology of southern California: California Division of Mines Bulletin 170, map scale approximately 1:125,000 Cross_Reference: Citation_Information: Originator: Hornafius, J.S. Originator: Luyendyk, B.P. Originator: Terres, R.R. Originator: Kamerling, M.J. Publication_Date: 1986 Title: Timing and extent of Neogene tectonic rotation in the western Transverse Ranges, California Edition: volume 97, number 12, p. 1476-1487 Geospatial_Data_Presentation_Form: bulletin Series_Information: Series_Name: Geological Society of America Bulletin Publication_Information: Publisher: Geological Society of America Cross_Reference: Citation_Information: Originator: Jahns, R.H. Originator: Muehlberger, W.R. Publication_Date: 1954 Title: Geology of the Soledad Basin, Los Angeles County, Map Sheet 6 Edition: bulletin 170 Geospatial_Data_Presentation_Form: Map Sheet Series_Information: Series_Name: California Division of Mines Bulletin Publication_Information: Publication_Place: California Publisher: California Division of Mines Other_Citation_Details: in, Jahns, R.H., ed., 1954, Geology of southern California: California Division of Mines Bulletin 170, map scale approximately 1:76,000 Cross_Reference: Citation_Information: Originator: Jennings, C.W. Originator: Strand, R.G. Publication_Date: 1969 Title: Geologic Map of California, Olaf P. Jenkins edition; Los Angeles Sheet Edition: Olaf P. Jenkins edition Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: California Division of Mines and Geology Map Publication_Information: Publication_Place: California Publisher: California Division of Mines and Geology Cross_Reference: Citation_Information: Originator: Wright, T.L. Publication_Date: 1991 Title: Structural geology and tectonic evolution of the Los Angeles Basin, California Edition: Memoir 52 Geospatial_Data_Presentation_Form: memoir Series_Information: Series_Name: American Association of Petroleum Geologists Memoir Publication_Information: Publisher: American Association of Petroleum Geologists Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Geologic-map units in the Los Angeles quadrangle database were described using standard field methods. Consistent with these methods, the database author has assigned standard geologic attributes to geologic lines, points, and polygons identified in the database. Nation-wide geologic-map accuracy standards have not been developed and adopted by the U.S. Geological Survey and other earth-science entities. Until such standards are adopted, the SCAMP project has developed internal map-accuracy standards for 1:100,000-scale geologic maps produced by the project. Geologic lines and points on 1:100,000 scale geologic maps are judged to meet SCAMP's internal map-accuracy standards if they are located to within +/-50 meters, relative to topographic or cultural features on the base map. On any derivative geologic-map plot, line data that are judged to meet the SCAMP internal map-accuracy standard are denoted by solid lines; line data that may not meet the SCAMP internal map-accuracy standard are denoted by dashed or dotted lines. There is no cartographic device for denoting the map-accuracy for geologic-point data (e.g., symbols representing bedding, foliation, lineations, etc.). Logical_Consistency_Report: Polygon and chain-node topology present. The areal extent of the map is represented digitally by an appropriately projected (UTM projection), mathematically generated box. Consequently, polygons intersecting the lines that comprise the map boundary are closed by that boundary. Polygons internal to the map boundary are completely enclosed by line segments which are themselves a set of sequentially numbered coordinate pairs. Point data are represented by coordinate pairs. Completeness_Report: The geologic map and digital database of the Los Angeles 30' x 60' quadrangle contain compiled data from a wide variety of sources at various scales (see Sheet 2, figure 3). Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The maximum transformation RMS error acceptable for 30' x 60' quadrangle transformation and data input is 0.003 (7.6 meters). Horizontal positional accuracy was checked by visual comparison of hard-copy plots with base-stable source data. Lineage: Process_Step: Process_Description: Scanned tracings of source maps at scales of approximately 1:24,000 that were generalized to include polygons and lines that would be readable at 1:100,000 scale. Scans were then converted to ARC/INFO coverages and registered to geographic coordinates. Process_Date: 1991-1998 Process_Step: Process_Description: Lines and polygons tagged. Selected structural data was digitized from source maps. Process_Date: 1991-1998 Process_Step: Process_Description: Line positions were adjusted to retain relationship between contours on the 30' x 60' base map and geologic lines in order to show the appropriate expressions of geologic structure. Process_Date: 1998 Process_Step: Process_Description: Field work performed in order to connect units across quadrangle boundaries (R.F. Yerkes and R.H. Campbell). Process_Date: 1990-1996 Process_Step: Process_Description: Compilation of 7.5' quadrangles into Los Angeles 30' x 60' quadrangle (R.F. Yerkes and R.H. Campbell). Process_Date: 2000 and 2004 Process_Step: Process_Description: Edits and reviews of digital compilation to address edge-matching problems and differences in unit labels from different sources. Process_Date: 2004 Process_Step: Process_Description: Description of map units and correlation of map units (R.H. Campbell and F.K. Miller) Process_Date: 2004 Process_Step: Process_Description: First draft of metadata created by Rachel Alvarez using FGDCMETA.AML ver. 1.2 05/14/98 on ARC/INFO data set c:\ralvarez\los-angeles\open-file\la43\la1_geo Process_Date: 20041012 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 7128 SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 21252 SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 7129 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 11 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 1.0 Longitude_of_Central_Meridian: -118.50 Latitude_of_Projection_Origin: 34.0 False_Easting: 0.000 False_Northing: 0.000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.7620339989662 Ordinate_Resolution: 0.7620339989662 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Version 1.0 of the Los Angeles 30' x 60' quadrangle comprises seven ARC/INFO coverages, of which four contain geologic data, one contains cartographic features, and four provide base-map, DLG-derived, reference data: la1_geo (geology), la1_str (structural point data), la1_anno (geologic unit annotation, label leaders, locality names), la_hypso (hypsography), la_hydro (hydrography), la_roads and la_rail (transportation and cultural data). 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Topanga Canyon Formation, Encinal Member Enumerated_Domain: Enumerated_Domain_Value: Ttcf Enumerated_Domain_Value_Definition: Topanga Canyon Formation, Fernwood Member Enumerated_Domain: Enumerated_Domain_Value: Ttcs Enumerated_Domain_Value_Definition: Topanga Canyon Formation, Saddle Peak Member Enumerated_Domain: Enumerated_Domain_Value: Tvn Enumerated_Domain_Value_Definition: Vaqueros Formation, San Nicholas Member Enumerated_Domain: Enumerated_Domain_Value: Tvd Enumerated_Domain_Value_Definition: Vaqueros Formation, Danielson Member Enumerated_Domain: Enumerated_Domain_Value: Tsp Enumerated_Domain_Value_Definition: Sespe Formation, Piuma Member Enumerated_Domain: Enumerated_Domain_Value: Tcc Enumerated_Domain_Value_Definition: Coal Canyon Formation Enumerated_Domain: Enumerated_Domain_Value: Tccl Enumerated_Domain_Value_Definition: Coal Canyon Formation, limestone Enumerated_Domain: Enumerated_Domain_Value: Tsi Enumerated_Domain_Value_Definition: Simi Conglomerate, undivided Enumerated_Domain: Enumerated_Domain_Value: TKb Enumerated_Domain_Value_Definition: Sedimentary rocks in the Beverly Hills area Enumerated_Domain: Enumerated_Domain_Value: Kt Enumerated_Domain_Value_Definition: Tuna Canyon Formation, undivided Enumerated_Domain: Enumerated_Domain_Value: Kte Enumerated_Domain_Value_Definition: Tuna Canyon Formation, informal member e Enumerated_Domain: Enumerated_Domain_Value: Ktd Enumerated_Domain_Value_Definition: Tuna Canyon Formation, informal member d Enumerated_Domain: Enumerated_Domain_Value: Ktc Enumerated_Domain_Value_Definition: Tuna Canyon Formation, informal member c Enumerated_Domain: Enumerated_Domain_Value: Ktb Enumerated_Domain_Value_Definition: Tuna Canyon Formation, informal member b Enumerated_Domain: Enumerated_Domain_Value: Ktr Enumerated_Domain_Value_Definition: Trabuco Formation Enumerated_Domain: Enumerated_Domain_Value: Kgr Enumerated_Domain_Value_Definition: Granitic rocks Enumerated_Domain: Enumerated_Domain_Value: Jsm Enumerated_Domain_Value_Definition: Santa Monica Slate, undivided Enumerated_Domain: Enumerated_Domain_Value: Jsms Enumerated_Domain_Value_Definition: Santa Monica Slate, spotted slate Enumerated_Domain: Enumerated_Domain_Value: Jsmp Enumerated_Domain_Value_Definition: Santa Monica Slate, phyllite Enumerated_Domain: Enumerated_Domain_Value: Tcbmp Enumerated_Domain_Value_Definition: Calabasas Formation, Mesa Peak Breccia Member Enumerated_Domain: Enumerated_Domain_Value: Tcbn Enumerated_Domain_Value_Definition: Calabasas Formation, Newell Sandstone Member Enumerated_Domain: Enumerated_Domain_Value: Tcbd Enumerated_Domain_Value_Definition: Calabasas Formation, Dry Canyon Sandstone Member Enumerated_Domain: Enumerated_Domain_Value: Tcbl Enumerated_Domain_Value_Definition: Calabasas Formation, Latigo Canyon Breccia Member Enumerated_Domain: Enumerated_Domain_Value: Tcbe Enumerated_Domain_Value_Definition: Calabasas Formation, Escondido Canyon Shale Member Enumerated_Domain: Enumerated_Domain_Value: Tcom Enumerated_Domain_Value_Definition: Conejo Volcanics, Malibu Bowl Tongue Enumerated_Domain: Enumerated_Domain_Value: Tcos Enumerated_Domain_Value_Definition: Conejo Volcanics, Solstice Canyon Tongue Enumerated_Domain: Enumerated_Domain_Value: Tcor Enumerated_Domain_Value_Definition: Conejo Volcanics, Ramera Canyon Tongue Enumerated_Domain: Enumerated_Domain_Value: QTsp Enumerated_Domain_Value_Definition: Saugus Formation, pebbly sandstone Enumerated_Domain: Enumerated_Domain_Value: QTss Enumerated_Domain_Value_Definition: Saugus Formation, pebbly sandstone Enumerated_Domain: Enumerated_Domain_Value: QTsg Enumerated_Domain_Value_Definition: Saugus Formation, conglomerate Enumerated_Domain: Enumerated_Domain_Value: Tcs Enumerated_Domain_Value_Definition: Castaic Formation, undivided Enumerated_Domain: Enumerated_Domain_Value: Tmc Enumerated_Domain_Value_Definition: Mint Canyon Formation, undivided Enumerated_Domain: Enumerated_Domain_Value: Tmc3 Enumerated_Domain_Value_Definition: Mint Canyon Formation, facies 3 Enumerated_Domain: Enumerated_Domain_Value: Tmc2 Enumerated_Domain_Value_Definition: Mint Canyon Formation, facies 2 Enumerated_Domain: Enumerated_Domain_Value: Tmc1 Enumerated_Domain_Value_Definition: Mint Canyon Formation, facies 1 Enumerated_Domain: Enumerated_Domain_Value: Ttk Enumerated_Domain_Value_Definition: Tick Canyon Formation, undivided Enumerated_Domain: Enumerated_Domain_Value: Tvz Enumerated_Domain_Value_Definition: Vasquez Formation, undivided Enumerated_Domain: Enumerated_Domain_Value: Tvzv Enumerated_Domain_Value_Definition: Vasquez Volcanics Enumerated_Domain: Enumerated_Domain_Value: Kp Enumerated_Domain_Value_Definition: Pelona Schist Enumerated_Domain: Enumerated_Domain_Value: Kto Enumerated_Domain_Value_Definition: Tonalite Enumerated_Domain: Enumerated_Domain_Value: Ktoqd Enumerated_Domain_Value_Definition: Tonalite and quartz diorite Enumerated_Domain: Enumerated_Domain_Value: Ktoqm Enumerated_Domain_Value_Definition: Tonalite and monzogranite Enumerated_Domain: Enumerated_Domain_Value: Ktowd Enumerated_Domain_Value_Definition: Tonalite, (Wilson Diorite of Miller, 1934) Enumerated_Domain: Enumerated_Domain_Value: Kgrgl Enumerated_Domain_Value_Definition: Granitic rocks, leucocratic granodiorite Enumerated_Domain: Enumerated_Domain_Value: KTRogn Enumerated_Domain_Value_Definition: Mixed tonalite and Mount Lowe intrusive suite Enumerated_Domain: Enumerated_Domain_Value: Kgrm Enumerated_Domain_Value_Definition: Mixed anorthosite and granite Enumerated_Domain: Enumerated_Domain_Value: Keg Enumerated_Domain_Value_Definition: Echo granite Enumerated_Domain: Enumerated_Domain_Value: Js Enumerated_Domain_Value_Definition: Syenite Enumerated_Domain: Enumerated_Domain_Value: Mzbhd Enumerated_Domain_Value_Definition: Biotite-hornblende diorite Enumerated_Domain: Enumerated_Domain_Value: Mzbqd Enumerated_Domain_Value_Definition: Biotite-quartz diorite Enumerated_Domain: Enumerated_Domain_Value: Mza Enumerated_Domain_Value_Definition: Alaskite Enumerated_Domain: Enumerated_Domain_Value: Mzgd Enumerated_Domain_Value_Definition: Granodiorite Enumerated_Domain: Enumerated_Domain_Value: Mzgc Enumerated_Domain_Value_Definition: Granitic complex Enumerated_Domain: Enumerated_Domain_Value: Mzdg Enumerated_Domain_Value_Definition: Diorite gneiss Enumerated_Domain: Enumerated_Domain_Value: TRlg Enumerated_Domain_Value_Definition: Mount Lowe intrusive suite, undivided Enumerated_Domain: Enumerated_Domain_Value: TRlgb Enumerated_Domain_Value_Definition: Mount Lowe intrusive suite, biotite-orthoclase facies Enumerated_Domain: Enumerated_Domain_Value: TRlgg Enumerated_Domain_Value_Definition: Mount Lowe intrusive suite, garnet-orthoclase facies Enumerated_Domain: Enumerated_Domain_Value: TRlgh Enumerated_Domain_Value_Definition: Mount Lowe intrusive suite, orthoclase-hornblende facies Enumerated_Domain: Enumerated_Domain_Value: TRlgk Enumerated_Domain_Value_Definition: Lowe intrusive suite, hornblende-dominant facies Enumerated_Domain: Enumerated_Domain_Value: MzPzsp Enumerated_Domain_Value_Definition: Serpentinite Enumerated_Domain: Enumerated_Domain_Value: Pzgn Enumerated_Domain_Value_Definition: Gneiss complex Enumerated_Domain: Enumerated_Domain_Value: Pzp Enumerated_Domain_Value_Definition: Placerita Formation Enumerated_Domain: Enumerated_Domain_Value: PzP_ms Enumerated_Domain_Value_Definition: Siliceous metasedimentary rock Enumerated_Domain: Enumerated_Domain_Value: P_grp Enumerated_Domain_Value_Definition: Granite pegmatite Enumerated_Domain: Enumerated_Domain_Value: P_gn Enumerated_Domain_Value_Definition: Gneiss Enumerated_Domain: Enumerated_Domain_Value: P_an Enumerated_Domain_Value_Definition: Anorthosite Enumerated_Domain: Enumerated_Domain_Value: P_gb Enumerated_Domain_Value_Definition: Gabbro Enumerated_Domain: Enumerated_Domain_Value: P_gbm Enumerated_Domain_Value_Definition: Ilmenite-magnetite Gabbro Enumerated_Domain: Enumerated_Domain_Value: P_mg Enumerated_Domain_Value_Definition: Mendenhall Gneiss Enumerated_Domain: Enumerated_Domain_Value: QTi Enumerated_Domain_Value_Definition: Inglewood Formation Enumerated_Domain: Enumerated_Domain_Value: QTrx Enumerated_Domain_Value_Definition: Sedimentary rocks of the Pacific Palisades area Enumerated_Domain: Enumerated_Domain_Value: Tfu Enumerated_Domain_Value_Definition: Fernando Formation, Upper Member Enumerated_Domain: Enumerated_Domain_Value: Tfuf Enumerated_Domain_Value_Definition: Fernando Formation, Upper Member, fossiliferous Enumerated_Domain: Enumerated_Domain_Value: Tfuc Enumerated_Domain_Value_Definition: Fernando Formation, Upper Member, pebbly sandstone and conglomerate Enumerated_Domain: Enumerated_Domain_Value: Tfl Enumerated_Domain_Value_Definition: Fernando Formation, Lower Member Enumerated_Domain: Enumerated_Domain_Value: Tflc Enumerated_Domain_Value_Definition: Fernando Formation, Lower Member, conglomerate Enumerated_Domain: Enumerated_Domain_Value: Tf3 Enumerated_Domain_Value_Definition: Fernando Formation, member 3 Enumerated_Domain: Enumerated_Domain_Value: Tf2 Enumerated_Domain_Value_Definition: Fernando Formation, member 2 Enumerated_Domain: Enumerated_Domain_Value: Tf1 Enumerated_Domain_Value_Definition: Fernando Formation, member 1 Enumerated_Domain: Enumerated_Domain_Value: Tpn Enumerated_Domain_Value_Definition: Puente Formation, undivided Enumerated_Domain: Enumerated_Domain_Value: Tpnz Enumerated_Domain_Value_Definition: Puente Formation, siltstone Enumerated_Domain: Enumerated_Domain_Value: Tpns Enumerated_Domain_Value_Definition: Puente Formation, siliceous shale Enumerated_Domain: Enumerated_Domain_Value: Tpna Enumerated_Domain_Value_Definition: Puente Formation, sandstone Enumerated_Domain: Enumerated_Domain_Value: Tpnsc Enumerated_Domain_Value_Definition: Puente Formation, Sycamore Canyon Member Enumerated_Domain: Enumerated_Domain_Value: Tpnscc Enumerated_Domain_Value_Definition: Puente Formation, Sycamore Canyon Member, conglomerate bed Enumerated_Domain: Enumerated_Domain_Value: Tpny Enumerated_Domain_Value_Definition: Puente Formation, Yorba Member Enumerated_Domain: Enumerated_Domain_Value: Tpnsq Enumerated_Domain_Value_Definition: Puente Formation, Soquel Member Enumerated_Domain: Enumerated_Domain_Value: Tmt Enumerated_Domain_Value_Definition: Monterey Shale, undivided Enumerated_Domain: Enumerated_Domain_Value: Tmtd Enumerated_Domain_Value_Definition: Monterey Shale, deformed Enumerated_Domain: Enumerated_Domain_Value: Tr Enumerated_Domain_Value_Definition: Trancas Formation, undivided Enumerated_Domain: Enumerated_Domain_Value: Tra Enumerated_Domain_Value_Definition: Trancas Formation, undivided, quartz bearing calcarenites Enumerated_Domain: Enumerated_Domain_Value: Tz Enumerated_Domain_Value_Definition: Zuma Volcanics Enumerated_Domain: Enumerated_Domain_Value: Ttcg Enumerated_Domain_Value_Definition: Topanga Group, conglomerate Enumerated_Domain: Enumerated_Domain_Value: Tta Enumerated_Domain_Value_Definition: Topanga Group, sandstone Enumerated_Domain: Enumerated_Domain_Value: Ttz Enumerated_Domain_Value_Definition: Topanga Group, siltstone Attribute: Attribute_Label: PLABL Attribute_Definition: Geologic map unit label, in coded text, used for plotting special characters contained in the geofont.txt textset (the geofont.txt textset must be used for these characters to be displayed correctly). Attribute: Attribute_Label: SHD Attribute_Definition: Coded integer value that relates units to cartographic shades in shadeset wpgcmykg.shd. Attribute: Attribute_Label: SHDFIL Attribute_Definition: Coded integer value that relates units to cartographic patterns in shadeset geoscamp2.shd. Detailed_Description: Entity_Type: Entity_Type_Label: la_geo.aat Entity_Type_Definition: Geologic contacts, faults, dikes, beds, and map boundary. Attribute: Attribute_Label: LTYPE Attribute_Definition: Description of types of lines on the geologic map (contact, fault, dike). Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: contact, approximately located Enumerated_Domain_Value: contact, certain Enumerated_Domain_Value: contact, concealed Enumerated_Domain_Value: contact, inferred Enumerated_Domain_Value: contact, inferred, queried Enumerated_Domain_Value: detachment, approximately located Enumerated_Domain_Value: detachment, concealed Enumerated_Domain_Value: detachment, intruded Enumerated_Domain_Value: detachment, intruded, concealed Enumerated_Domain_Value: detachment, queried Enumerated_Domain_Value: dike, approximately located Enumerated_Domain_Value: dike, certain Enumerated_Domain_Value: dike, diabase Enumerated_Domain_Value: fault, approximately located Enumerated_Domain_Value: fault, certain Enumerated_Domain_Value: fault, concealed Enumerated_Domain_Value: fault, concealed, queried Enumerated_Domain_Value: fault, inferred Enumerated_Domain_Value: fault, inferred, queried Enumerated_Domain_Value: intruded fault, certain Enumerated_Domain_Value: map boundary Enumerated_Domain_Value: mapped horizon or bed Enumerated_Domain_Value: mapped tuff bed Enumerated_Domain_Value: reverse fault, approximately located Enumerated_Domain_Value: reverse fault, concealed Enumerated_Domain_Value: scratch boundary Enumerated_Domain_Value: strike slip fault, approximately located Enumerated_Domain_Value: thrust fault, 1971 surface rupture Enumerated_Domain_Value: thrust fault, approximately located Enumerated_Domain_Value: thrust fault, concealed Enumerated_Domain_Value: thrust fault, concealed, queried Enumerated_Domain_Value: thrust fault, inferred Enumerated_Domain_Value: thrust fault, intruded Enumerated_Domain_Value: water boundary Attribute: Attribute_Label: L-SYMB Attribute_Definition: Integer value that relates the arc to cartographic line symbol in lineset: geoscamp2.lin. Attribute: Attribute_Label: L-NAME Attribute_Definition: Formal name of fault feature. Detailed_Description: Entity_Type: Entity_Type_Label: la_str.pat Entity_Type_Definition: Geological point data includes site-specific information describing the types and the orientation of foliation, joints, and lineations. One annotation subclass is included in the geologic points coverage, LA1_STR which displays the respective dip and plunge values associated with individual point data. Attribute: Attribute_Label: PTTYPE Attribute_Definition: describes type of point data (foliation, joints, lineations) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: air photo attitude Enumerated_Domain_Value: anticline symbol Enumerated_Domain_Value: approximate bedding Enumerated_Domain_Value: bedding Enumerated_Domain_Value: bedding with tops Enumerated_Domain_Value: crumpled bedding Enumerated_Domain_Value: horizontal bedding Enumerated_Domain_Value: igneous foliation Enumerated_Domain_Value: igneous joint Enumerated_Domain_Value: inclined cleavage Enumerated_Domain_Value: metamorphic foliation Enumerated_Domain_Value: overturned anticline symbol Enumerated_Domain_Value: overturned bedding Enumerated_Domain_Value: overturned bedding with tops Enumerated_Domain_Value: syncline symbol Enumerated_Domain_Value: vertical bedding Enumerated_Domain_Value: vertical metamorphic foliation Attribute: Attribute_Label: PT-SYMB Attribute_Definition: Coded integer value that relates point to cartographic point symbol in markerset geoscamp2.mrk Attribute: Attribute_Label: STRIKE Attribute_Definition: Azimuthal strike of planar feature Attribute: Attribute_Label: DIP Attribute_Definition: Dip of planar feature Detailed_Description: Entity_Type: Entity_Type_Label: la_str.aat Entity_Type_Definition: Line data includes site-specific information describing the types and the orientation of folds Attribute: Attribute_Label: LTYPE Attribute_Definition: describes type of line data (anticline, syncline) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: anticline, approx. located Enumerated_Domain_Value: anticline, concealed Enumerated_Domain_Value: overturned anticline, approx. located Enumerated_Domain_Value: overturned anticline, certain Enumerated_Domain_Value: syncline, approx. located Enumerated_Domain_Value: syncline, concealed Attribute: Attribute_Label: L-SYMB Attribute_Definition: Coded integer value that relates line to cartographic line symbol in lineset geoscamp2.lin Detailed_Description: Entity_Type: Entity_Type_Label: la_ano.aat Entity_Type_Definition: annotation leaders Attribute: Attribute_Label: LTYPE Attribute_Definition: Description of type of line in the annotation coverage Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: leader Attribute: Attribute_Label: L-SYMB Attribute_Definition: Coded integer value (1) that relates arcs to cartographic line symbol in lineset geoscamp2.lin Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Information Services Contact_Address: Address_Type: mailing address Address: Box 25286 Denver Federal Center City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: (303) 202-4700 Contact_Facsimile_Telephone: (303) 202-4693 Distribution_Liability: The U.S. Geological Survey (USGS) provides these geographic data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for use lies entirely with the user. Although these data have been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by USGS. This digital geologic map database of the Los Angeles 30' X 60' quadrangle, 1:100,000 map-scale, and any derivative maps thereof, is not meant to be used or displayed at any scale larger than 1:100,000 (e.g., 1:24,000). Metadata_Reference_Information: Metadata_Date: 20041012 Metadata_Review_Date: 20041015 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Rachel M. Alvarez Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey Address: Department of Earth Sciences Address: University of California, Riverside City: Riverside State_or_Province: California Postal_Code: 92521 Country: USA Contact_Voice_Telephone: (951) 276-6397 Contact_Facsimile_Telephone: (951) 276-6295 Contact_Electronic_Mail_Address: ralvarez@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: Version of June 8, 1994 Metadata_Access_Constraints: none Metadata_Use_Constraints: none