# Lab_05_2011 - GG303 Lab 5 9/12/11 Lab 5 1 Spherical...

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GG303 Lab 5 9/12/11 1 Stephen Martel Lab5-1 University of Hawaii Lab 5 Spherical Projections Use a separate piece of paper for each exercise, and include printouts of your Matlab work . 103 pts for Ex. 1-4; 124 points for Ex. 1-5. Exercise 1: Plots of lines (30 points total) Plot and neatly label the following lines on an equal angle projection: Line Trend (1 point each) Plunge (1 point each) A N40°W B S30°W 10° C N85°E 30° Draw with a light line the cyclographic traces of the three planes containing the three pairs of lines (1), determine the angles between the lines (1), and label the angles on the stereographic plot (1). Lines Angle in degrees (3 points each) A & B B & C C & A Now check your results using dot products of unit vectors along the lines. First find the direction cosines for each line using Matlab. Line α (1 point each) β (1 point each) γ (1 point each) A B C Now take the dot products of the vectors (as represented by their direction cosines) and use the arccosine function to find the angles between the lines (remember to convert to degrees) Lines Dot product (1 point each) Angle (°) (1 point each) A & B B & C C & A

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GG303 Lab 5 9/12/11 2 Stephen Martel Lab5-2 University of Hawaii Exercise 2: Plots of planes (29 points total) Plot and neatly label the following planes (strike and dip follow right-hand rule convention) and the poles to those planes on an equal angle projection. Use a fairly heavy line to designate the planes. 2 pts for each pole calculation, 2 pts for each feature plotted, 1 pt for each label; 16 pts total. Plane Plane strike (°) Plane dip (°) Pole trend (°) 1 pt each Pole plunge (°) 1 pt each F 256° 22° G 68° 72° Plane Plane plot 2 pts each Pole plot 2 pts each Plane label 1 pt each Pole label
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## This note was uploaded on 12/05/2011 for the course GEOLOGY 300 taught by Professor Stephenmartel during the Fall '11 term at University of Hawaii, Manoa.

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Lab_05_2011 - GG303 Lab 5 9/12/11 Lab 5 1 Spherical...

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