GEOL 4714/5714 Field Geophysics

Fall 1999

Meeting Time: 12:00 — 6:00 PM Mon., Fri., ESCI Rm. 455

Instructor: Prof. Anne Sheehan
Office: ESCI Rm 440A, Phone: 492-4597, email: afs@mantle.colorado.edu
Office hours: Wed., Thurs.: 1:30 — 2:30 p.m.

TA: Lynda Lastowka

Office: ESCI Rm 462D & 440, Phone: 492-7296, email: lastowka@mantle.colorado.edu
Office hours: Wed., Thurs.: 2-3

Class web page: http://cires.colorado.edu/people/sheehan.anne/geol4740.html

Course Objectives: Field geophysical skills will be developed through a combination of lecture and practical field exercises with an emphasis on the latter. Techniques to be covered are those used in resource exploration, environmental studies, engineering, and archaeology, and include: seismic refraction, gravity, magnetics, electrical resistivity, electromagnetic methods, ground penetrating radar, and earthquake seismology. Laboratories will consist of field experiments and computer modeling/interpretation exercises.

General course goals:

1) gain knowledge of geophysics and proficiency in using geophysical instruments

2) present quantitative interpretations of geophysical data

3) learn which geophysical techniques are appropriate for a given problem

4) develop ability to successfully execute a geophysical experiment

Student responsibilities:

1) PARTICIPATE IN ALL LABS AND FIELD EXERCISES Including mandatory field trips on Sept. 10-12 and Sept. 17-18.

2) present laboratory reports on these field exercises as assigned

3) Grads (5714) - execute an independent field experiment and present a report

4) This is a field course so come prepared! Sturdy shoes, rain gear, hat, sunscreen, snack, water, etc. Other helpful things to bring — calculator, clipboard.

Prerequisites: GEOL 2700, MATH 1300, PHYS 1110, or instructor consent. No previous knowledge of geophysics is assumed.

Text: Field Geophysics, 2nd edition, Milson (required)
Geophysical Exploration of the Shallow Subsurface,Burger (supplemental). Somewhat elementary but extremely clear explanations. Includes useful Macintosh software.
Applied Geophysics, 2nd Edition,Telford, Geldart, and Sheriff (supplemental). Comprehensive reference guide for the serious geophysicist.

Grading: Grading for GEOL 4714 (Field Geophysics) will be based upon four major areas. Elaboration on these areas is given below.

1) Data collection - 25%. Attendance and class (field) participation.

2) Class Field notebook/scribe - 10%. Document all field work done and data collected - will be graded for neatness, completeness, clarity, and accuracy. It is the student’s responsibility to make sure that they scribe at least twice during the semester.

3) Data reports - 40%. Prepare neat reports which include statement of problem that was investigated, explanation of procedures used, presentation of data, analysis, interpretation.

4) Practical exam - 25%. Written exam over material covered.

Graduate students (GEOL 5714) will also be responsible for an independent field project and presentation, which will account for 20% of the grade in GEOL 5714.

 

 

Tentative Schedule: GEOL 4714/5714 - Field Geophysics

(Subject to change due to weather and/or equipment availability)

Day

Date

Topic

Reading

Mon

23-Aug

Introduction

Ch 1

Fri

27-Aug

Seismic Refraction Field

Ch 11, Ch 13

Mon

30-Aug

Seismic Refraction Lab

Ch 11, Ch 13

Fri

3-Sep

Resistivity & EM Field

Ch 5, 8

Mon

6-Sep

Labor Day - No Class

Fri

10-Sep

Field Trip - Spanish Peaks (Mag, EM, Grav, Seis. Refr.)

SAT

11-Sep

Field Trip - Spanish Peaks

Ch 2,3,8,13

SUN

12-Sep

Field Trip - Spanish Peaks

Mon

13-Sep

No Class

Fri

17-Sep

Field Trip - Vibroseis, EQ seismic

Ch 12

SAT

18-Sep

Field Trip - Vibroseis

Mon

20-Sep

Magnetics Lab

Ch 3

Fri

24-Sep

GPR Field

Ch 10

Mon

27-Sep

Gravity Lab

Ch 2

Fri

1-Oct

TBD

Ch 5, 8

Mon

4-Oct

Resistivity and EM Lab

Ch 5, 8

Fri

8-Oct

Review

Mon

11-Oct

Final Exam

Fri

3-Dec

Graduate student presentations

 

Lab reports are due one week after the lab (not field) date.

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