GG303 Lab 7
10/6/10
1
DOWN PLUNGE CROSS SECTIONS
I
Main Topics
A Cylindrical folds
B Downplunge cross-section views
C Apparent dip
II Cylindrical folds
A Surface of a cylindrical fold is parallel to a
11/15/11
24. Faults (I)
I Main Topics
A Why are faults important?
B Fault geometry
C Fault kinemaEcs
D Fault classicaEon
E IntroducEon to fault mechanics
11/
11/14/11
23. Disloca/ons
I Main Topics
A Disloca/ons and other defects in solids
B Signicance of disloca/ons
C Planar disloca/ons
D Displacement and stress elds
11/6/11
22. Stresses Around a Hole (II)
I Main Topics
A General solu=on for a plane strain case
B Boundary condi=ons
C Solu=on that honors boundary condi=ons
11/6/11
21. Stresses Around a Hole (I)
I Main Topics
A Introduc<on to stress elds and stress
concentra<ons
B Stresses in a polar (cylindrical) reference frame
10/30/11
20. Rheology & Linear Elas7city
I Main Topics
A Rheology: Macroscopic deforma7on behavior
B Linear elas7city for homogeneous isotropic
materials
10/30/11
10/25/11
19. Principal Stresses
I Main Topics
A Cauchys formula
B Principal stresses (eigenvectors and eigenvalues)
C Example
10/25/11
GG303
1
19. Principal Str
10/23/11
18. Tensor Transforma2on of Stresses
I Main Topics
A Objec2ve
B Approach
C Deriva2on
D Example
10/23/11
GG303
1
17. Mohr Circle for Trac2ons
From Ki
10/16/11
17. Mohr Circle for Trac4ons
I Main Topics
A Stresses vs. trac4ons
B Mohr circle for trac4ons
C Example
10/16/11
GG303
1
17. Mohr Circle for Trac4ons
11/23/11
27. Folds (I)
I Main Topics
A What is a fold?
B Curvature of a plane curve
C Curvature of a surface
11/23/11
GG303
1
27. Folds (I)
hEp:/upload.wik
GG303 Lab 5
9/28/10
1
SPHERICAL PROJECTIONS
I
Main Topics
A What is a spherical projection?
B Spherical projection of a line
C Spherical projection of a plane
D Determination of fold axes
E Free spher
Geology and Geophysics 303: Structural Geology
Fall Semester, 2010, 3.0 Units
Lectures: MW 10:30-11:20
Lab: W 1:30-4:20
http:/www.soest.hawaii.edu/martel/Stevem.html
Instructor: Steve Martel, POST 805
12/5/11
15. OPENINGMODE FRACTURES
(JOINTS AND DIKES)
I Main Topics
A Why are opening mode fractures important?
B Geometry
C KinemaOcs
D Mechanics
E Key takeawa
11/23/11
14. Folds
I Main Topics
A Local geometry of a plane curve (cylindrical fold)
B Local geometry of a curved surface (3D fold)
C Numerical evaluaFon of cur
10/19/11
9. EIGENVECTORS, EIGENVALUES, AND FINITE STRAIN
I Main Topics
A Mo?va?on
B Inverse [A]1 of a real matrix A
C Determinant |A| of a real matrix A
D
9/8/11
3. MAPS AND CROSS SECTIONS
I Main Topics
A Three point problems
B Map interpretaCon and cross secCons
9/8/11
GG303
1
3. MAPS AND CROSS SECTIONS
II Thr
8/25/11
1. ORIENTATIONS OF LINES AND PLANES IN SPACE
I Main Topics
A Deni?ons of points, lines, and planes
B Geologic methods for describing lines and
planes
C AL
12/2/11
28. Folds (II)
I Main Topic: Mechanics of folds above intrusions
A Background
B G.K. Gilberts idealizaGon
C SuperposiGon
D Displacements around an openingm
10/16/11
16. STRESS AT A POINT
I Main Topics
A Stress vector (trac=on) on a plane
B Stress at a point
C Principal stresses
D Transforma=on of principal stre
10/12/11
15. FINITE STRAIN & INFINITESIMAL STRAIN
(AT A POINT)
I Main Topics
A The nite strain tensor [E]
B DeformaIon paths for nite strain
C Innitesimal strai
10/11/11
14. HOMOGENEOUS FINITE STRAIN:
DISPLACEMENT & DEFORMATION GRADIENTS
I Main Topics
A PosiAon, displacement, and dierences in posiAon
of two points
B Chain ru
GG303 Lab 14
11/23/11
1
FOLDS
Exercise 1: Graphical solution for curvature (10 points total )
Find the curvature graphically at the crest of the curve on the next page using
the three marked points an
GG303 Lab 13
11/17/11
1
FAULT SLIP
Lab 13
Problem 1 ( 32 pts total)
In the attached map for problem 1, a dike shows a left-lateral separation of 100m. The
mapped surface has been eroded perfectly flat
GG303 Lab 12
11/15/11
1
DEFORMATION AROUND A HOLE
The objective of this lab is to develop insight into the stress and strain fields around a hole, and
to see how those fields are related.
Part 1 (Stra
GG303 Lab 10
10/28/11
1
Lab 10: Stress and strain
Exercise 1: Stress analysis
Consider a hypothetical state of stress near the surface of the Earth in a volca
GG303 Lab 5
9/12/11
Lab 5
1
Spherical Projections
U se a separate piece of paper for each exercise, and i nclude printouts of your
M atlab work . 1 03 pts for Ex. 1 - 4; 124 p oints f or Ex. 1 - 5 .
E
GG303 Lab 4
9/14/11
1
INTERSECTIONS OF PLANES
Lab 4
Read each exercise completely before you start it so that you understand the problem-solving
approach you are asked to execute. This will help keep
GG303 Lab 3
9/6/11
1
Three Point Problems and Map Interpretation
Exercise 1 (29 points total )
Three points with the following coordinates lie on a planar bed:
A: 100m N, 400m E, 400m elev;
B: 0m N, 0
GG303 Lab 2
8/29/11
1
LAB 02: ORTHOGRAPHIC PROJECTIONS OF LINES AND PLANES
The purpose of this lab is to develop your ability to visualize and describe
lines and planes in three dimensions, by concept