Understanding the relations between faults and the flow of thermal fluids is key to successful exploration for new geothermal resources in Dixie Valley and other Basin and Range geothermal systems. Mapping fault patterns within these basins and recognizing their connections at depth are key to improving this understanding. However, most of the faults are shallowly buried, making them difficult to locate and map. Moreover, drill holes and seismic profiles cannot give a comprehensive view of fault attitudes and patterns because the information they provide is only for limited areas.

Define possible uses of aeromagnetic data;
Demonstrate why geological interpretation of aeromagnetic data is important to mineral exploration;
Examine the tools you require to do a geological interpretation of aeromagnetic data; and
Give you the confidence to apply these tools, and therefore to make a real difference!<...>

From the point of view of geomagnetism, the earth may be considered as made up of three parts: core, mantle and crust (Figure 1.1). Convection processes in the liquid part of the iron core give rise to a dipolar geomagnetic field that resembles that of a large bar-magnet aligned approximately along the earth's axis of rotation (Figure 1.2). The mantle plays little part in the earth's magnetism, while interaction of the (past and present) geomagnetic field with the rocks of the Earth's crust produces the magnetic anomalies recorded in detailed (e.g. aeromagnetic) surveys carried out close to the earth's surface.

Инструкция регламентирует производственные работы по наземной, автомагнитной, аэромагнитной и гидромагнитной съемкам и организации вариационной службы. В приложениях к ней приведены материалы справочного характера - формулы для решения прямой задачи магниторазведки, сведения об экспресс-методах решения прямой и обратной задач, формы документации, детальные описания техники выполнения некоторых методических приемов и др. Инструкция обобщает опыт передовых производственных предприятий, новейшие результаты научно-исследовательских работ в области магниторазведки, данные зарубежных исследователей.