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A cotangent ruler for simplifying the graphic solution of problems in structural geology

September 28, 1946

The cotangent ruler is a device for measuring directly the dip of contoured surfaces, or, conversely, for constructing contours that represent planes of known dip. It greatly simplifies the graphic solution of problems in structural geology, and has several specialized applications to problems commonly encountered in mining geology and areal geologic mapping.

Publication Year 1946
Title A cotangent ruler for simplifying the graphic solution of problems in structural geology
DOI 10.2113/gsecongeo.41.5.539
Authors Walter S. White
Publication Type Article
Publication Subtype Journal Article
Series Title Economic Geology
Index ID 70214513
Record Source USGS Publications Warehouse