REPUBLIC AND TORODA CREEK GRABENS

AEROMAGNETIC SURVEY

Okanogan and Ferry Counties, Washington

A detailed aeromagnetic survey of the Republic and Toroda Creek grabens was flown by Hunting Geophysical Services, Inc. in 1959. Five 15-minute quadrangles were surveyed. The data were published by the Washington Division of Mines and Geology in 1960. The publication is now out of print.

SPECIFICATIONS

Survey size: 3,945 line miles

Flight lines: ¼-mile

Flight line direction: East-west

Elevation: 500 feet

PRJ is making the data available in digital form (on CD-ROM or diskette), on mylar maps at a scale of 1:100,000, and as a color map. Shadowgraphs, filter maps, and interpretations are also available. Purchase of the basic package, described below, is a prerequisite to the purchase of the additional products.

Digital Data

• Digital gridded data

Maps, on mylar, scale 1:100,000

• Total Magnetic Intensity map (IGRF removed)
• Reduced-to-Pole of TMI map

Additional Deliverables

• Color map
• Shadowgraphs, set of 2 illuminations
• Filter maps, mylar
• Interpretation