POND: an Excel spreadsheet to obtain structural attitudes of Planes from Oriented Drillcore
The Planes from Oriented and Navigated Drillcore (POND) Excel((R)) 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. (C) 2003 Published by Elsevier Science Ltd.
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