A Microsoft Excel spreadsheet to obtain structural attitudes of planes from oriented drill core / Электронная таблица Microsoft Excel для получения структурного расположения плоскостей по ориентированному буровому керну

The POND Excel® spreadsheet allows determination and presentation of the attitudes of planes intersected in ‘oriented’ and ‘navigated’ diamond drillcore. Two drillcore navigation measurements (azimuth and plunge from a deviation log), and two plane-to-drillcore angular measurements (angle to core axis, and angle between orientation mark and intersection ellipse) are required to obtain a solution. All possible drillcore orientations are supported and multiple plane orientations can be determined simultaneously. Graphical results are presented on a stereonet as poles to the intersected planes. Numerical results are presented in a matrix to allow clipping into stereonet programs for contouring and more formal and involved structural analysis and display. <...>