MULTIPLE SEISMIC METHODS AND GRAVITY FOR DEFINING THE ANCESTRAL MISSOURI RIVER CHANNEL NEAR GREAT FALLS, MT, USA

摘要

Starting fall 2011 and continuing into spring 2012, the seismic prospecting class at Montana Tech designed and carried out a project focused on defining the pre-glacial paleochannel of the Missouri river near Great Falls, MT, USA. Although local water well driller's logs can be interpreted unambiguously to determine presence of the channel, the well control, although dense in developed areas, is sparse throughout the area of interest. Approximate depth to the paleochannel is estimated at approximately 30-100m. As the paleochannel represents a prolific aquifer, there is significant interest in accurately locating it for future development and irrigation use.