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

Economic Geology
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Abstract

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 type Article
Publication Subtype Journal Article
Title A cotangent ruler for simplifying the graphic solution of problems in structural geology
Series title Economic Geology
DOI 10.2113/gsecongeo.41.5.539
Volume 41
Issue 5
Year Published 1946
Language English
Publisher Society of Economic Geologist
Description 7 p.
First page 539
Last page 545
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