HADDAD_Cross_Section_Packet[1]

HADDAD_Cross_Section_Packet[1] - Constructing Geologic...

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Constructing Geologic Cross Sections Page 1 of 10 Haddad, D. E. 2009 Constructing Geologic Cross Sections David E. Haddad Active Tectonics, Quantitative Structural Geology, and Geomorphology School of Earth and Space Exploration Arizona State University david.e.haddad@asu.edu Table of Contents Introduction. .......................................................................................................................................... 2 Tools . .................................................................................................................................................... 2 General Guidelines to Constructing a Geologic Cross Section . ........................................................... 3 Correcting for Apparent Dip. ................................................................................................................ 4 Constructing a Geologic Cross Section . ............................................................................................... 6 Anatomy of a Geologic Cross Section. ................................................................................................. 9 Further Reading . ................................................................................................................................. 10
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Constructing Geologic Cross Sections Page 2 of 10 Haddad, D. E. 2009 Introduction The purpose of this packet is to demonstrate how to construct a geologic cross section from a geologic map using non-computerized techniques and tools. Much of the methods described here are discussed in many introductory structural geology textbooks. This document is not intended to replace them, but instead aims to provide a quick reference for geology students and professionals. Please direct any questions or suggestions for improvement to me (email address provided above). Anyone interested in using this packet as a teaching aid is welcome to do so, but please contact me so I can send you any updates that I (or other contributors) make. Tools The quality of scientific data is closely dictated by the quality of the instruments used to record them. Similarly, the quality of any hand-drafted document depends on the quality of the drafting tools used to prepare it. It may be tempting to purchase low-cost drafting tools to save a buck or two. However, low cost usually translates to low quality, unreliability, and poor longevity. Purchasing high-quality drafting tools may, in the long run, be more cost effective because you would not be replacing them as often as their cheaper alternatives. Consider the following motivations for purchasing high-quality drafting tools: Field gear, such as electronic total stations, terrestrial LiDAR scanners, and even the Brunton compass, are all quality-crafted instruments that record data with precisions of up to a fraction of a millimeter or degree. Therefore, using poorly crafted drafting tools to analyze and present data collected by these high-precision instruments can introduce unwanted errors
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This note was uploaded on 03/01/2011 for the course GLG 451 taught by Professor Arrowsmith during the Spring '11 term at ASU.

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HADDAD_Cross_Section_Packet[1] - Constructing Geologic...

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