Online link | https://geo-nsdi.er.usgs.gov/metadata/open-file/97-681/magdike.faq.html |
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Description | Hildenbrand and Ravat (1997) inferred the locations of near-surface dikes from analyses of high-resolution aeromagnetic data. The lines represent locations of magnetic highs that they interpreted as dikes. Modeling indicates the dikes are vertical, extend |
Originators | Rhea, Susan |
Publication | U.S. Geological Survey Open-File Report 97-0681 |
Presence of phosphate mineral resources
Label | Definition |
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PHOS | Map units which contain phosphate mineral resources |
PERMIS | Permissive for the presence of phophate mineral resources |
FAVOR | Favorable for the presence of phosphate mineral resources |
Presence of phosphate mineral resources at specific location (same attributes as polygon coverage MRPHOS)
Label | Definition |
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Sand and gravel map
Label | Definition |
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SG | Sand and gravel units |
STREAM | Location of stream |
CITY | City or town location |
SUM | Redefined item that combines attributes SG, STREAM, and CITY into one attribute. |
Sand and gravel deposits at specific locations (same attributes as polygon coverage SG.PAT)
Label | Definition |
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State boundaries
Label | Definition |
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ST | State abbreviation |