Airborne geophysical survey IL_IL05_pg.shp: SW Wisconsin-NW Illinois (IL)

Survey type	M-D (magnetic; collected in digital form)
Flown by	Mobil
Date flown	11/83-01/84
Line spacing	0.8 (km)
Altitude	609.6 (m) by barometer measurement
Total distance	7,563 (km)
References	U.S. Geological Survey, 2002, Digital aeromagnetic datasets for the conterminous United States and Hawaii; a companion to the North American magnetic anomaly map; Open-File Report 2002-361 https://pubs.usgs.gov/of/2002/ofr-02-361/
Counties	Carroll - Jo Daviess - Ogle - Stephenson - Clinton - Dubuque - Jackson - Grant - Green - Iowa - Lafayette
Overlapping surveys	Dubuque Northeast Iowa East-central Iowa Northwest Illinois Rockford Wis.-Ill. Lead-Zinc '48 Southwest Wisconsin South-central Wisconsin Wisconsin Tie Lines

Metadata	Questions & Answers - Outline - Parseable text - XML
Download	IL_IL05.zip