Name: Howard County Geologic Map

Display Field: FORMATIONA

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This layer shows the geology of Howard County, Maryland, including formations and rock type. 

Copyright Text: This layer was created by the Natural Resource Conservation Service, Howard County, Maryland, https://data.howardcountymd.gov/

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -8592416.5358
YMin: 4736448.5515
XMax: -8537801.0425
YMax: 4774741.1238
Spatial Reference: 102100 (3857)

Drawing Info:

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Gneiss","symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[182,251,252,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[110,110,110,255],"width":0.7}},"values":[["Baltimore Gneiss"]]},{"label":"Cockeysville Marble","description":"Cockeysville Marble","symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[194,252,179,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[110,110,110,255],"width":0.7}},"values":[["Cockeysville Marble"]]},{"label":"Diabase","description":"Diabase","symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[252,184,208,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[110,110,110,255],"width":0.7}},"values":[["Diabase"]]},{"label":"Ellicott City Granite","description":"Ellicott City Granite","symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[215,223,252,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[110,110,110,255],"width":0.7}},"values":[["Ellicott City Granite"]]},{"label":"Gillis Group","description":"Gillis Group","symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[230,252,215,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[110,110,110,255],"width":0.7}},"values":[["Gillis Group"]]},{"label":"Guilford Granite","description":"Guilford Granite","symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[252,187,250,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[110,110,110,255],"width":0.7}},"values":[["Guilford Granite"]]},{"label":"James Run Formation","description":"James Run Formation","symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[252,251,182,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[110,110,110,255],"width":0.7}},"values":[["James Run Formation"]]},{"label":"Loch Raven Formation","description":"Loch Raven 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Formation"},{"symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[182,202,252,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[110,110,110,255],"width":0.7}},"value":"Patuxent Formation","label":"Patuxent Formation"},{"symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[182,232,252,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[110,110,110,255],"width":0.7}},"value":"Pegmatite","label":"Pegmatite"},{"symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[220,199,252,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[110,110,110,255],"width":0.7}},"value":"Pleasant Grove Formation","label":"Pleasant Grove Formation"},{"symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[252,243,212,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[110,110,110,255],"width":0.7}},"value":"Prettyboy Schist","label":"Prettyboy Schist"},{"symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[212,252,244,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[110,110,110,255],"width":0.7}},"value":"Setters Formation","label":"Setters Formation"},{"symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[222,252,182,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[110,110,110,255],"width":0.7}},"value":"Sykesville Formation","label":"Sykesville Formation"},{"symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[184,252,231,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[110,110,110,255],"width":0.7}},"value":"Terrace Gravel","label":"Terrace Gravel"}],"fieldDelimiter":",","authoringInfo":{"colorRamp":{"type":"multipart","colorRamps":[{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[222,252,207,255],"toColor":[222,252,207,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[245,179,252,255],"toColor":[245,179,252,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[252,188,179,255],"toColor":[252,188,179,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[187,217,252,255],"toColor":[187,217,252,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[252,212,243,255],"toColor":[252,212,243,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[194,252,251,255],"toColor":[194,252,251,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[183,179,252,255],"toColor":[183,179,252,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[252,227,184,255],"toColor":[252,227,184,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[182,252,185,255],"toColor":[182,252,185,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[251,252,179,255],"toColor":[251,252,179,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[252,220,215,255],"toColor":[252,220,215,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[223,197,252,255],"toColor":[223,197,252,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[252,179,222,255],"toColor":[252,179,222,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[179,252,216,255],"toColor":[179,252,216,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[252,239,215,255],"toColor":[252,239,215,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[252,184,201,255],"toColor":[252,184,201,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[215,252,234,255],"toColor":[215,252,234,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[222,252,179,255],"toColor":[222,252,179,255]},{"type":"algorithmic","algorithm":"esriCIELabAlgorithm","fromColor":[252,205,179,255],"toColor":[252,205,179,255]}]}}},"scaleSymbols":true,"transparency":0,"labelingInfo":null}

HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: FID

Unique ID Field:

Name : FID

IsSystemMaintained : True

Global ID Field:

Type ID Field: FORMATIOND

Fields:

• FID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• FORMATIONA (type: esriFieldTypeString, alias: FORMATIONA, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• FORMATIOND (type: esriFieldTypeString, alias: FORMATIOND, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• FORMATIONS (type: esriFieldTypeString, alias: FORMATIONS, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• COMPLEXGRO (type: esriFieldTypeString, alias: COMPLEXGRO, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• ROCKTYPE (type: esriFieldTypeString, alias: ROCKTYPE, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• FORMATIONP (type: esriFieldTypeString, alias: FORMATIONP, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• geom_Lengt (type: esriFieldTypeDouble, alias: geom_Lengt, SQL Type: sqlTypeOther, nullable: true, editable: true)
• geom_Area (type: esriFieldTypeDouble, alias: geom_Area, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Types:

ID: Alluvium & Colluvium
Name: Alluvium & Colluvium
Domains:

Templates:

Name: Alluvium & Colluvium
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Alluvium & Colluvium

---

ID: Baltimore Complex
Name: Baltimore Complex
Domains:

Templates:

Name: Baltimore Complex
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Baltimore Complex

---

ID: Baltimore Gneiss
Name: Baltimore Gneiss
Domains:

Templates:

Name: Baltimore Gneiss
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Baltimore Gneiss

---

ID: Cockeysville Marble
Name: Cockeysville Marble
Domains:

Templates:

Name: Cockeysville Marble
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Cockeysville Marble

---

ID: Diabase
Name: Diabase
Domains:

Templates:

Name: Diabase
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Diabase

---

ID: Ellicott City Granite
Name: Ellicott City Granite
Domains:

Templates:

Name: Ellicott City Granite
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Ellicott City Granite

---

ID: Gillis Group
Name: Gillis Group
Domains:

Templates:

Name: Gillis Group
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Gillis Group

---

ID: Guilford Granite
Name: Guilford Granite
Domains:

Templates:

Name: Guilford Granite
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Guilford Granite

---

ID: James Run Formation
Name: James Run Formation
Domains:

Templates:

Name: James Run Formation
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: James Run Formation

---

ID: Loch Raven Formation
Name: Loch Raven Formation
Domains:

Templates:

Name: Loch Raven Formation
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Loch Raven Formation

---

ID: Morgan Run Formation
Name: Morgan Run Formation
Domains:

Templates:

Name: Morgan Run Formation
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Morgan Run Formation

---

ID: Oella Formation
Name: Oella Formation
Domains:

Templates:

Name: Oella Formation
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Oella Formation

---

ID: Patuxent Formation
Name: Patuxent Formation
Domains:

Templates:

Name: Patuxent Formation
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Patuxent Formation

---

ID: Pegmatite
Name: Pegmatite
Domains:

Templates:

Name: Pegmatite
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Pegmatite

---

ID: Pleasant Grove Formation
Name: Pleasant Grove Formation
Domains:

Templates:

Name: Pleasant Grove Formation
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Pleasant Grove Formation

---

ID: Prettyboy Schist
Name: Prettyboy Schist
Domains:

Templates:

Name: Prettyboy Schist
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Prettyboy Schist

---

ID: Setters Formation
Name: Setters Formation
Domains:

Templates:

Name: Setters Formation
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Setters Formation

---

ID: Sykesville Formation
Name: Sykesville Formation
Domains:

Templates:

Name: Sykesville Formation
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Sykesville Formation

---

ID: Terrace Gravel
Name: Terrace Gravel
Domains:

Templates:

Name: Terrace Gravel
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• FORMATIOND: Terrace Gravel

---

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 6/24/2025 12:25:00 PM

Schema Last Edit Date: 6/24/2025 12:25:00 PM

Data Last Edit Date: 6/23/2025 6:13:32 PM

Supported Operations:   Query   Query Pivot   Query Top Features   Query Analytic   Query Bins   Generate Renderer   Validate SQL   Get Estimates   ConvertFormat