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Layer: Denver Basin Arapahoe Base Subcrop (ID: 21)

Parent Layer: SPDSS Denver Basin Layers

Name: Denver Basin Arapahoe Base Subcrop

Display Field: Shape_Length

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Top of Laramie Formation or Base of D1 (Synorgogenic strata) intersected with the subcrop (a 10m DEM with the thickness of Qal subtracted). This boundary coincides with the base of the Arapahoe Aquifer on the west side of the Denver Basin. Towards the east side of the basin the net sand decreases rapidly and aquifer quality diminishes. Part of the Aquifer Boundary outlines (outcrop) and subcrop traces of the Denver Basin Aquifers. Aquifer Boundaries were calculated by interpolating geophysical well log data and structure contour data to a continuous grid in ArcGIS. The resulting structure surface was then intersected with a DEM via the raster calculator (ESRI Spatial Analyst). The structure data were intersected with both a 10 m DEM that was unaltered and a DEM with the alluvial thickness subtracted. This method reveals the expected outcrop trace (when intersected with the regular DEM) and the subcrop trace (when intersected with a DEM that is corrected for the thickness of the alluvium)

Copyright Text: Colorado Geological Survey, Division of Water Resources, South Platte Decision Support System

Default Visibility: false

MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: false

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:
Drawing Info: Advanced Query Capabilities:
HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

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

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