Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Magnetic dikes

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/97-681/magdike.faq.html
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

Related topics

States or counties

MRPHOS.PAT

Presence of phosphate mineral resources

Label Definition
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

MRPHOS.PAT

Presence of phosphate mineral resources at specific location (same attributes as polygon coverage MRPHOS)

Label Definition

SG.PAT

Sand and gravel map

Label Definition
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.

SG.PAT

Sand and gravel deposits at specific locations (same attributes as polygon coverage SG.PAT)

Label Definition

STATE-INT.AAT

State boundaries

Label Definition
ST State abbreviation