Department of Earth Sciences

GEOL 306: Igneous Petrology
Offered in Spring
INSTRUCTOR: Todd Feeley

Room 222 Traphagen Hall
Office Hours: MW 10:15-11:15 (or just drop by anytime)
· Tel: (406) 994-6917
· Email: tfeeley@montana.edu

SPRING 2007 SCHEDULE
Lectures:  MW  9:00-9:50,  Traphagen 101
Lab sections:  Th  2:10-4:00, Fri  2:10-4:00,  Traphagen 101

BOOKS:
TEXTBOOK: McBirney, A.R., 1996, Igneous Petrology: Jones and Bartlett, Boston, 508 p. (required)
ON RESERVE: Hall, A., 1996, Igneous Petrology: Longman Group Limited, Essex England, 551 p.

The following geologic dictionary is available from the MSU Bookstore and would also serve you well in this course and throughout your geologic career: Bates, R.L., and Jackson, Julie, Dictionary of Geological Terms: Anchor Press.

COURSE OUTLINE:

A. Principles of Igneous Petrology (Weeks 1-9)

Introduction (Geology Triangle, Course, Equipment)

  

Tectonic settings of igneous rocks

Ch. 1

Volcanism

Hall Ch. 2

Intrusions

Hall Ch. 3

Classification (Normative, Chemical, Modal)

Ch. 2 (p. 24-37)

Properties of silicate melts

Ch. 2 (p. 37-59)

Principles of crystallization and melting explained through phase diagrams

Ch. 3 (72-93)

Trace elements in igneous petrology

Ch. 5 (p. 158-171); Hall p. 126-143

Isotopic ratios in igneous petrology

Ch. 1 (p. 10-13), Appendix D; Hall p. 202-207

B. Magmatic Differentiation (Weeks 10-11)

Partial melting

Ch. 5 (p. 131-158)

Fractional crystallization

"

Magma mixing and crustal contamination

"

  C. Petrogenesis and Plate Tectonics (Weeks 12-16)

Basalts

Ch. 7-8

Andesites

Ch. 9

Granites and rhyolites

Ch. 10

Alkaline igneous rocks

Ch. 11

HOUR EXAMS: (will cover material discussed in lecture up to the day of the exam)
Midterm 1: Wed February 23 (Week 7)
Midterm 2: Wed March 29 (Week 12)
Midterm 3: Thursday May 4 (6:00 - 7:50; Finals Week)

GRADING BREAKDOWN:

Lecture (50%)

Laboratory (50%)

2 Midterms @ 10% each
1 Final Exam @ 20%
10% Homework problems

40% labs
10% Pop quizzes

LAB WORK:
Lab exercises and background material will be handed out in laboratory section one week prior to the assignment (except for the first three exercises).

Laboratory work with hand specimen of igneous rocks will be stressed during the first two lab periods. Laboratory work with hand specimen and the petrographic microscope will be stressed during the following lab periods. You should attend all labs. Please keep a lab notebook with notes, thin section drawings, and answers to any questions given in the laboratories. These should be turned in to the TA by 5:00 PM on Friday of the week in which the lab is due. Further details will be provided in lab section during week 2 of the semester (note: lab will not formally meet during week 1).

***A "prize" (a 2.5 lb geological hammer) will be awarded for the best lab notebook.

THE FINE PRINT:
Late work will be assessed 25% per day late including weekends and holidays. Work more than 4 days late will not be graded. It is important to attend laboratory section and it is essential that you arrive on time for lab, as the pop-quizzes can be given at any time during the period. No make up exercises will be arranged for these quizzes.

The student is responsible for all lecture and assigned reading material. Role is not taken in lecture. If you miss a lecture obtain notes from another student in the class. To make up an absence from an examination the student must verify illness, severe injury, or family emergency. If at all possible, students should notify the instructor prior to the exam to indicate any extraordinary circumstances that have arisen. My phone has voice-mail service.

Students may work together during laboratory periods and after regularly scheduled course meetings on laboratory assignments and homework problem sets. In fact, you are encouraged to do so. However, any material turned in for credit should be based on actual work done by the student submitting the work for credit and in that student's own writing. Perceived incidents of student academic misconduct (sorry, I don't like to include this, but it's necessary) will be appraised on the basis of Montana State University's "1998-99 STUDENT ACADEMIC AND GRIEVANCE PROCEDURES & CONDUCT GUIDELINES" (http://www.montana.edu/~wwwfachb/policy/acguide.html). Incidents of academic misconduct will be evaluated on a case-by-case basis as will the severity of any sanctions imposed. If a student is considered to have engaged in an incident of academic misconduct, he/she will not be permitted to drop the course in order to avoid sanctions.

The following materials are required equipment for this course in addition to the textbook: a high quality handlens (Bausch and Lomb or equivalent quality at least 10X, both a 10X and 20x would be ideal), a bound lab note book, and colored pencils.

 

Geology 306 Laboratory Schedule
Spring Semester 2000
TA: Chuck Lindsay
Room 114 Traphagen Hall

YOU ARE ENCOURAGED TO BRING YOUR MINERALOGY AND PETROLOGY TEXT TO LAB.

Week                Subject

1

Plotting data on ternary classification diagrams (homework) and review of igneous minerals (optional) (Reading: McBirney chapter 4)

2

Plutonic rocks in hand speciman

3

Volcanic rocks in hand speciman

4

Basaltic rocks from St. Paul Island, Alaska (McBirney p. 224-240)

5

Basalts continued

6

Mafic intrusive rocks from the Stillwater Complex, Montana (McBirney p. 179-207)

7

Stillwater continued

8

Andesites from the Tatara San Pedro Complex, Chilean Andes (McBirney p. 315-319; 337-343)

9

Andesites continued

10

Spring Break

11

Rhyolitic pyroclastic rocks in thin section (McBirney p. 357-358; p. 389-396)

12

Rhyolites continued

13

Granitic rocks from the Sierra Nevada Batholith (McBirney p. 354-357; p. 364; p. 389-396)

14

Granitic rocks continued

15

Igneous rocks of the Arkansas Alkalic Provinance (McBirney chapter 11)

16

Alkalic rocks continued