Helicopter-borne magnetic, electromagnetic and radiometric geophysical survey in Steinkjer, Nord-Trøndelag
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NGU conducted an airborne geophysical survey in the Steinkjer area in October 2015 as a part of the MINS project (Mineral resources in South Norway). This report describes and documents the acquisition, processing and visualization of recorded datasets.The geophysical survey results reported herein are approximately 1920 line km, covering an area of approximately 470 km2.The NGU modified Geotech Ltd. Hummingbird frequency domain EM system supplemented by optically pumped Cesium magnetometer and a 1024 channels RSX-5 spectrometer was used for data acquisition.