Magnetotelluric Survey At La Grande Prospect Union County, Oregon

A Reconnaissance Electrical Survey Was Conducted By Terraphysics In The La Grande Area, Union County, Oregon. A Magnetotelluric Method Was Used. Data Were Obtained At Frequencies Of 8,.8,.1 And 0.05 Hz. The Results Appear To Reflect Some Of The Geological Formations In The Area. A Scalar Multilayer Interpretation Of The Data Is Presented. Various Depths To A Resistive Basement (>100 Ohm Meters) Are Suggested, Ranging From 100 To Over 1000 Meters. The Sediments In The Basin Appear To Be Fairly Thick In Some Areas; 250 To 1200 Meters, With Resistivity Values Of 8 To55 Ohm Meters. Two Shallow Low-Resistivity (< 3 Ohm Meters) Areas Are Indicated, And Two Deeper Low-Resistivity Zones Are Suggested. In View Of Two-Dimensional Effects, The Deeper Zones Should Be Viewed With Caution. Additional Survey Work Is Recommended In The Area. Egi Reference Number Gl05487_1

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Additional Info

Field Value
Citation Date 1976-02-01T00:00:00

Harvest Information

Original ID AA5BEF286088487C898FCF18A6881364
Index Date 2014-06-17T12:29:45
Original Format ISO-USGIN
Original Version 1.2


Name Aldo Mazzella

Geographic Extent

North Bound 46.3
South Bound 42
East Bound -116.46
West Bound -124.61