GEOLOGY 8140 - METAMORPHIC PETROLOGY (Winter 2005)

Dr. Alan Whittington Room 312, Geological Sciences

whittingtona@missouri.edu Phone: 884-7625

Meetings: MWF 12:00 - 12:50 Room 207, Geological Sciences

Prerequisites: Undergraduate Petrology course including some Metamorphic Petrology

Required text: Metamorphic Phase Equilibria and Pressure-Temperature-Time Paths by Frank S. Spear, published by Mineralogical Society of America, 1993. ISBN 0-939950-34-0.

Other books: (in the Geology library; I will try to put these all on reserve)

Grad level / metamorphic petrology:

Metamorphic petrology by Akiho Miyashiro. (Oxford University Press, 1994.) Call no. QE475.A2 M578 1994

Geochemical thermodynamics by Darrell K. Nordstrom and James L. Munoz. (Blackwell). On reserve for GEOL 342 (Low-T geochem.)

Metamorphic pressure-temperature-time paths by Frank S. Spear and Simon M. Peacock. (American Geophysical Union, 1989.) Call no. QE475.A2 S68 1989

Metamorphic petrology: mineralogical, field, and tectonic aspects, 2^nd ed., by Francis J. Turner (McGraw-Hill, c1981). Call no. QE475.T89 1981

Introduction to Metamorphic Petrology by Bruce W. Yardley (Longman / Wiley, 1989) Call no. QE475.A2 Y37 1989

Undergrad level / general petrology):

An Introduction to the Rock-Forming Minerals, 2^nd ed., by Deer, Howie and Zussmann (Longman / Wiley, 1992) Call no. QE364 .D44 1992

Igneous and metamorphic petrology, 2^nd ed., by Myron G. Best. (Blackwell Pub., 2003.) Call no. QE461.B53 2003

The Encyclopedia of igneous and metamorphic petrology, edited by Donald R. Bowes. (Van Nostrand Reinhold, 1989.) Call no. QE461.E56 1989

Useful books for thin section homeworks:

Atlas of metamorphic rocks and their textures by B.W.D. Yardley, W.S. MacKenzie, and C. Guilford. Prentice Hall, 1990. Call no. QE475.A2 Y35 1990   

Igneous and metamorphic rocks under the microscope by David Shelley. Chapman & Hall, 1993. Call no. QE461 .S4815 1993

Principle aims of this course:

(i) Understand the thermodynamic basis for mineral associations and chemistry as a function of pressure and temperature (leading to the concepts of metamorphic facies and thermobarometry)

(ii) Learn to interpret metamorphic textures to determine mineral reactions and facies, and use suites of thin sections to determine regional metamorphic geotherms and qualitative P-T-t paths

(iii) Become familiar with simple geothermobarometers and more complex internally-consistent datasets such as Thermocalc in order to quantitatively determine conditions of metamorphism.

(iv) Understand the physics of heat flow in rocks and be able to use information on metamorphic conditions in exhumed terrains to make inferences about regional tectonic processes

How to do well in this class:

(i) Use class time effectively - read the textbook in advance of class and we can then use class time for discussion and further explanation.

(ii) Plan ahead on homeworks, and especially thin section exercises and papers. Your writing will be greatly improved by doing several drafts, with a break of at least 24 hours in between successive drafts. Petrography is best done in bursts of no more than about two hours to avoid microscope-induced seasickness.

Accommodation of students with disabilities:

If you need accommodations because of a disability, if you have emergency medical information to share with me, or if you need special arrangements in case the building must be evacuated, please inform me immediately. Please see me privately after class, or at my office (312 Geological Sciences; office hours by appointment).

To request academic accommodations (for example, a note-taker), students must also register with Disability Services, AO38 Brady Commons, 882-4696. It is the campus office responsible for reviewing documentation provided by students requesting academic accommodations, and for accommodations planning in cooperation with students and instructors, as needed and consistent with course requirements. For other MU resources for students with disabilities, click on "Disability Resources" on the MU homepage.

Students who have special conditions as addressed by the Americans with Disabilities Act, and who need any test or course materials to be furnished in an alternative format, should notify the instructor immediately. Reasonable efforts will be made to accommodate the needs of these students. Such students should also register with the Disability Services Office, A038 Brady Commons, phone 882-4696.

MU policy on academic honesty:

Academic integrity ensures that all students have a fair and equal opportunity to succeed. Any behavior that provides an unfair advantage to one student is unacceptable and will not be tolerated. Each piece of work completed by a student must be solely a reflection of that student’s own work or his or her contribution to a collaborative effort.

I strive to uphold the University values of respect, responsibility, discovery, and excellence. On my honor, I pledge that I have neither given nor received unauthorized assistance on this work.

Students are expected to adhere to this pledge on all graded work whether or not they are explicitly asked in advance to do so. Furthermore, in instances where academic integrity is in question, I will refer to Article VI of the Faculty Handbook. (Article VI provides further information regarding the process by which violations are handled and sets forth a standard of excellence in our community.) I plan to use Option B (Academic Integrity Violation Report).

PROVISIONAL OUTLINE OF TOPICS Book chapter

Section 1 - Introduction

Classification of types of metamorphism 1

Review of metamorphic minerals (crystal chemistry) 4

Metamorphic facies 2

Petrography -

Section 2 – Chemography

Composition space, projections and petrogenetic grids 5, 8

Petrogenetic grids: CKNASH 9

Pelites: KFMASH 10

Section 3 – Phase Equilibria

Homogeneous phase equilibria 6

Activity models 7

Heterogeneous phase equilibria 8

Section 4 – Geothermobarometry and P-T-t paths

Geothermometry and geobarometry 15

P-T-X-M phase relations (skip for W05) 16

Use of Thermocalc -

Zoned metamorphic minerals 17

Section 5 –Tectonic evolution of metamorphic belts

Heat flow and metamorphism 3

P-T-t paths 20

Examples 21

Grading: A-B-C-D-F (note there are no ± grades if taking a course for graduate credit)

5% homework 1 (mineral formulae and Fe²⁺/Fe³⁺)

15% homework 2 (thin section exercise 1)

8% homework 3 (Schreinemakers’ analysis, AFM diagrams)

15% homework 4 (thin section exercise 2)

7% homework 5 (geothermobarometry)

10% homework 6 (Thermocalc)

15% paper 1 (literature review)

20% paper 2 (research proposal)

5% presentation (accompanies the research proposal)

(30% calculation, 30% petrography, 35% writing, and 5% presentation)

There is no final exam for this course.

Geology 8140 Metamorphic Petrology; Winter 2005 schedule

Date		Meeting #	Lecture	Book	Homework / notes
Jan. 19^th	Wednesday	1	Intro	1	Order textbooks
Jan. 21^st	Friday	2	Crystal chemistry	4	Facies assignment
Jan 24^th	Monday	3	Crystal chemistry	4	HW1 (min calc)
Jan 26^th	Wednesday	4	Crystal chemistry	4	Facies due
Jan 28^th	Friday	5	Metamorphic facies	2
Jan 31^st	Monday	6	Petrography	-	HW1 due / HW2 (pelites)
Feb 2^nd	Wednesday	7	Petrography	-
Feb 4^th	Friday	8	Projections	5
Feb 7^th	Monday	9	Projections	5	Homework 3 (AFM)
Feb 9^th	Wednesday	10	Projections	5
Feb 11^th	Friday	11	CKNASH	9
Feb 14^th	Monday	12	CKNASH	9
Feb 16^th	Wednesday	13	CKNASH	9
Feb 18^th	Friday	14	KFMASH + PG	8, 10
Feb 21^st	Monday	15	KFMASH + PG	8, 10
Feb 23^rd	Wednesday	16	KFMASH + PG	8, 10
Feb 25^th	Friday	17	KFMASH + PG	8, 10
Feb 28^th	Monday	18	Homog. phase eq.	6	HW 3 due
Mar 2^nd	Wednesday	19	Homog. phase eq.	6
Mar 4^th	Friday	20	Activity models	7	HW2 due
Mar 7^th	Monday	21	Activity models	7	HW4 (basites)
Mar 9^th	Wednesday	22	Heterog. phase eq.	8
Mar 11^th	Friday	23	Heterog. phase eq.	8	Paper 1, HW5 (PT)
Mar 14^th	Monday	24	Thermobarometry	15
Mar 16^th	Wednesday	25	Thermobarometry	15
Mar 18^th	Friday	26	Thermobarometry	15
Mar 21-25	MWF		Spring Break	-
Mar 28^th	Monday	27	---	-	Alan away
Mar 30^th	Wednesday	28	---	-	Alan away
Apr 1^st	Friday	29	Metabasalts	16
Apr 4^th	Monday	30	Thermocalc (AX)	16	Paper 1 draft, HW5 due
Apr 6^th	Wednesday	31	Thermocalc (AX)	-	Paper 2
Apr 8^th	Friday	32	Thermocalc	-
Apr 11^th	Monday	33	Thermocalc	-	Paper 1 due
Apr 13^th	Wednesday	34	Thermocalc	-	HW6 (TC)
Apr 15^th	Friday	35	Zoned minerals	17
Apr 18^th	Monday	36	Zoned minerals	17
Apr 20^th	Wednesday	37	---		Alan away
Apr 22^nd	Friday	38	Heat flow	3