Parent Layer: Kamas OFR-763

Name: MapUnitLines

Display Field: MapUnit

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: The Kamas 7.5’ quadrangle is in the Wasatch Back and is centered over the north-south-trending Kamas Valley with foothills of the Uinta Mountains to the east and the Keetley volcanic field in the West Hills to the west. The Weber River, a major source of drinking water, flows west out of the mouth of Weber Canyon in the northeast corner of the map area. The Kamas quadrangle encompasses the cities of Kamas and Oakley, as well as the town of Peoa. The Kamas quadrangle is located at the intersection of several major tectonic elements. The Uinta anticline formed during the Laramide orogeny (Late Cretaceous to Eocene) as a major, doubly plunging, east-west basement-cored anticlinal arch and plunges west beneath Kamas Valley. Paleozoic strata broadly dip southwest to northwest, defining the western plunge throughout the map area. The Frog Valley thrust fault present in the north part of the map is interpreted as thin-skinned deformation related to the Jurassic to Cretaceous Sevier fold and thrust belt. This fault was subsequently rotated northwest and steepened by a buried strand of the North Flank fault of the Laramide Uinta Mountain Uplift. The steepened thrust fault continues west beyond the map area and connects to a larger system of thrust faults including the Crandall Canyon, Absaroka, and the North Flank faults. Paleogene volcanic rocks overlie older rocks and preexisting structures throughout the Kamas quadrangle. During the Paleogene, intermediate dikes and shallow intrusions fed stratovolcanoes which erupted the Keetley Volcanics. Lava flows, volcaniclastic deposits, and ash-fall deposits blanketed a large swath of the map area with significant thickness variations due to paleotopography and potential active normal faulting at the time of deposition. An eroded volcanic stock (Indian Hollow) with a radial dike swarm that sourced the extrusive volcanics is present in the southwestern part of the map area.The East Kamas Valley fault forms a half graben system that bounds the eastern margin of Kamas Valley. Although concealed by Quaternary alluvial, fluvial, and mass movement deposits, its presence is apparent from gravity, well, and geomorphic data. There are five main types of unconsolidated Quaternary deposits in the map area: landslide deposits, colluvium, alluvium, alluvial-fan deposits, and glacial outwash deposits.

Copyright Text: Program Manager: Stefan M. Kirby Project Manager: Zachary W. Anderson GIS and Cartography: Keilee A. Higgs Geology Review: Zachary W. Anderson GIS and Cartography Review: Austin J. Jensen and Subigya Shah Funding: Funded by the Utah Geological Survey and the U.S. Geological Survey, National Cooperative Geologic Mapping Program, through USGS STATEMAP award number G22AC00383 (2022–2024).

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 288895

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: true

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: -1.23982095651E7
YMin: 4959924.768299997
XMax: -1.23935942204E7
YMax: 4964305.247499997
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: Symbol
Field 2: N/A
Field 3: N/A
Field Delimiter: ;
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: Dike, intermediate, approximately located
  Label: Dike, intermediate, approximately located
  Description: N/A
  Symbol:
  Style: esriSLSDashDot
  Color: [255, 0, 0, 255]
  Width: 0
• Value: Dike, intermediate, well located
  Label: Dike, intermediate, well located
  Description: N/A
  Symbol:
  Style: esriSLSSolid
  Color: [255, 0, 0, 255]
  Width: 0
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• MapUnit ( type: esriFieldTypeString, alias: MapUnit, length: 10 )
• IsConcealed ( type: esriFieldTypeString, alias: IsConcealed, length: 1 )
• LocationConfidenceMeters ( type: esriFieldTypeSingle, alias: LocationConfidenceMeters )
• ExistenceConfidence ( type: esriFieldTypeString, alias: ExistenceConfidence, length: 50 , Coded Values: [certain: certain] , [questionable: questionable] )
• IdentityConfidence ( type: esriFieldTypeString, alias: IdentityConfidence, length: 50 , Coded Values: [certain: certain] , [questionable: questionable] )
• Label ( type: esriFieldTypeString, alias: Label, length: 50 )
• Symbol ( type: esriFieldTypeString, alias: Symbol, length: 254 )
• PlotAtScale ( type: esriFieldTypeSingle, alias: PlotAtScale )
• DataSourceID ( type: esriFieldTypeString, alias: DataSourceID, length: 100 )
• Notes ( type: esriFieldTypeString, alias: Notes, length: 254 )
• MapUnitLines_ID ( type: esriFieldTypeString, alias: MapUnitLines_ID, length: 50 )
• Type ( type: esriFieldTypeString, alias: Type, length: 254 )
• created_user ( type: esriFieldTypeString, alias: created_user, length: 255 )
• created_date ( type: esriFieldTypeDate, alias: created_date, length: 8 )
• last_edited_user ( type: esriFieldTypeString, alias: last_edited_user, length: 255 )
• last_edited_date ( type: esriFieldTypeDate, alias: last_edited_date, length: 8 )
• Shape_Length ( type: esriFieldTypeDouble, alias: Shape_Length )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata