Name: Seismic Anomalies

Display Field: TYPE

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: 230,000 sq km of seismic data interpretation mapping over 28,000 seafloor seismic amplitude anomalies in the Gulf of Mexico using 3-D time-migrated seismic surveys. This mapping program means to understand the distribution of natural hydrocarbon seeps and the related benthic fauna, and to characterize other seafloor features related to the geological framework of the seafloor. These areas show anomalously high or low amplitude response over the background response, and include: Positive- Slow to moderate hydrocarbon seepage Negative- Rapid expulsion of sediment, brine, and hydrocarbons Mud volcano- Cones created by negative anomalies Confirmed mud volcano- Direct observation of mud volcanos Flow- Sediment flows from fast moving sediment or hydrocarbons Pockmark- Circular to oval depressions created by the rapid removal of sediment Cretaceous- Outcrops of Cretaceous-aged carbonate rock Lithologic- Outcrops of Cretaceous-aged carbonate rock Salt- Salt outcrops (not seep related) Slump- Downslope sediment flows Fan- Submarine channels and sand rich turbidite fans Confirmed organisms- Direct observation of chemosynthetic and coral communities Confirmed coral- Direct observation of benthic corals Confirmed gas hydrate- Direct observation of gas hydrate occurrences Confirmed gas- Direct observation of gas plumes Confirmed oil- Direct observation of oil seepage Possible oil positive- high positive oil seepage located under an oil slick Possible oil negative- low positive oil seepage located under an oil slick For more detailed information, and individual layers for download: http://www.boem.gov/Oil-and-Gas-Energy-Program/Mapping-and-Data/Map-Gallery/Seismic-Water-Bottom-Anomalies-Map-Gallery.aspx

Copyright Text: MarineCadastre.gov

Default Visibility: true

MaxRecordCount: 10000

Supported Query Formats: JSON, geoJSON

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: -96.1907520353751
YMin: 25.792872413634793
XMax: -86.34433610507308
YMax: 29.24184815769992
Spatial Reference: 4267  (4267)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: TYPE
Field 2: null
Field 3: null
Field Delimiter: ,
Default Symbol:
N/A
Default Label: null
UniqueValueInfos:
• Value: positive anomaly
  Label: Positive Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [255, 0, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [255, 0, 0, 255]
  Width: 2
• Value: negative anomaly
  Label: Negative Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [76, 230, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [76, 230, 0, 255]
  Width: 2
• Value: pockmark anomaly
  Label: Pockmark Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [230, 0, 169, 255]
  Outline:
  Style: esriSLSSolid
  Color: [230, 0, 169, 255]
  Width: 2
• Value: slump anomaly
  Label: Slump Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [168, 168, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [168, 168, 0, 255]
  Width: 2
• Value: flow anomaly
  Label: Flow Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [0, 132, 168, 255]
  Outline:
  Style: esriSLSSolid
  Color: [0, 132, 168, 255]
  Width: 2
• Value: fan anomaly
  Label: Fan Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [230, 230, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [230, 230, 0, 255]
  Width: 2
• Value: salt anomaly
  Label: Salt Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [255, 190, 232, 255]
  Outline:
  Style: esriSLSSolid
  Color: [255, 190, 232, 255]
  Width: 2
• Value: cretaceous anomaly
  Label: Cretaceous Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [190, 210, 255, 255]
  Outline:
  Style: esriSLSSolid
  Color: [190, 210, 255, 255]
  Width: 2
• Value: lithologic anomaly
  Label: Lithologic Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [168, 112, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [168, 112, 0, 255]
  Width: 2
• Value: confirmed mud volcano anomaly
  Label: Confirmed Mud Volcano Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [180, 215, 158, 255]
  Outline:
  Style: esriSLSSolid
  Color: [180, 215, 158, 255]
  Width: 2
• Value: mud volcano anomaly
  Label: Mud Volcano Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [180, 215, 158, 255]
  Outline:
  Style: esriSLSSolid
  Color: [180, 215, 158, 255]
  Width: 2
• Value: confirmed gas anomaly
  Label: Confirmed Gas Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [156, 156, 156, 255]
  Outline:
  Style: esriSLSSolid
  Color: [156, 156, 156, 255]
  Width: 2
• Value: confirmed gas hydrate anomaly
  Label: Confirmed Gas Hydrate Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [230, 156, 21, 255]
  Outline:
  Style: esriSLSSolid
  Color: [230, 152, 0, 255]
  Width: 2
• Value: confirmed oil anomaly
  Label: Confirmed Oil Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [0, 0, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [0, 0, 0, 255]
  Width: 2
• Value: confirmed organisms anomaly
  Label: Confirmed Organisms Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [205, 102, 153, 255]
  Outline:
  Style: esriSLSSolid
  Color: [205, 102, 153, 255]
  Width: 2
• Value: possible oil negative anomaly
  Label: Possible Oil Negative Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [114, 137, 68, 255]
  Outline:
  Style: esriSLSSolid
  Color: [114, 137, 68, 255]
  Width: 2
• Value: possible oil positive anomaly
  Label: Possible Oil Positive Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [0, 0, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [0, 0, 0, 255]
  Width: 2
• Value: confirmed coral anomaly
  Label: Confirmed Coral Anomaly
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [255, 190, 190, 255]
  Outline:
  Style: esriSLSSolid
  Color: [255, 190, 190, 255]
  Width: 2
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

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• TYPE ( type: esriFieldTypeString, alias: Type, length: 50 )
• TYPE2 ( type: esriFieldTypeString, alias: Type2, length: 50 )
• TYPE3 ( type: esriFieldTypeString, alias: Type3, length: 50 )
• HORIZON ( type: esriFieldTypeString, alias: Horizon, length: 16 )
• DESCRIPTION ( type: esriFieldTypeString, alias: Description, length: 50 )
• SHAPE ( type: esriFieldTypeGeometry, alias: Shape )

Supported Operations:   Query   Query Attachments   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata