Parent Layer: Farmington 7.5 M-279DM

Name: Geologic Units

Display Field: UnitName

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This digital dataset represents a geologic map of the Farmington quadrangle, Salt Lake and Davis Counties, Utah, mapped by authors in 2006 and 2012. Data are intended for use at 1:24,000 scale. Plate 1 depicts geologic formations, faults, wells, and other information and is accompanied by a second plate that includes descriptions of map units, geologic symbols, Lake Bonneville elevation chronology, and cross sections.The Farmington quadrangle is located in Salt Lake and Davis Counties, northern Utah, and includes parts of the municipalities of Farmington, Kaysville, Woods Cross, and North Salt Lake. The quadrangle has igneous and metamorphic bedrock of the Farmington Canyon Complex in its northeast corner. The remainder of the quadrangle consists of unconsolidated deposits that include lacustrine, mass-movement, alluvial, paludal, and fluvial deposits. Mass-movement deposits include at least three generations of lateral spread deposits as well as various smaller landslide deposits. Scarps of the Weber segment of the Wasatch fault zone are mapped along the eastern boundary of the quadrangle. Most scarps are west facing and record episodic surface faulting along this segment of the Wasatch fault zone since the Pleistocene.

Copyright Text: Program Manager: Grant C. Willis (UGS) Project Manager: Adam P. McKean (UGS) GIS and Cartography: Jay C. Hill and Martha L. Jensen (UGS) Geology review: Adam P. McKean (UGS) GIS review: Kent D. Brown (UGS) Funding: Utah Geological Survey and the U.S. Geological Survey, National Cooperative Geologic Mapping Program, through USGS STATEMAP award number 03HQAG0096

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XMin: -1.24677842813E7
YMin: 4993922.5286
XMax: -1.24538692835E7
YMax: 5012345.057099998
Spatial Reference: 102100  (3857)

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  Label: 1, Qal1, Younger stream alluvium
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  Label: 2, Qal2, Older stream alluvium
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  Label: 3, Qalp, Stream alluvium related to the Provo shoreline and regressive phase of Lake Bonneville
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  Label: 4, Qaf1, Younger alluvial-fan deposits
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  Label: 5, Qaf2, Older alluvial-fan deposits
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  Label: 6, Qafp, Alluvial-fan deposits related to the Provo shoreline and regressive phase of Lake Bonneville
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  Label: 7, Qfd, Fill and disturbed land
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  Label: 8, Qc, Colluvium
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  Label: 9, Qsm, Wetland and marsh deposits
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  Label: 10, Qmf1, Debris-flow deposits
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  Label: 11, Qmf2, Older debris-flow deposits
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• Value: 41
  Label: 12, Qml2, Liquefaction-induced landslide deposits
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  Label: 13, Qml3, Older liquefaction-induced landslide deposits
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  Label: 14, Qms1, Landslide deposits
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  Label: 15, Qms2, Older landslide deposits
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• Value: 45
  Label: 16, Qli, Lacustrine silt and clay deposits
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• Value: 46
  Label: 17, Qlf, Lacustrine fine-grained deposits
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• Value: 47
  Label: 18, Qlsp, Lacustrine sand-bearing deposits related to the Provo shoreline and regressive phase of Lake Bonneville
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• Value: 48
  Label: 19, Qlsbp, Lacustrine sand-bearing deposits related to transgressive and regressive phases of Lake Bonneville
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  Label: 20, Qlgbp, Lacustrine gravel-bearing deposits related to transgressive and regressive phases of Lake Bonneville
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• Value: 50
  Label: 21, Qlgb, Lacustrine gravel-bearing deposits related to the Bonneville shoreline and transgressive phase of Lake Bonneville
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• Value: 51
  Label: 22, Qas, Mixed alluvial and marsh deposits
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• Value: 52
  Label: 23, Q, Quaternary unconsolidated basin fill
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  Label: 24, Qb, Quaternary basin fill
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  Label: 25, Tb, Tertiary basin fill
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• Value: 55
  Label: 26, Xfcg, Farmington Canyon Complex quartz-rich gneiss
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  Label: 27, Xfcm, Farmington Canyon Complex pegmatitic gneiss
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  Label: 28, Xfc, Farmington Canyon Complex, undifferentiated
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• Value: 58
  Label: 29, water
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