Amherst College
Department of Geology
Geology 32: Igneous and Metamorphic Petrology
Spring 2010
Professor John T. (Jack) Cheney
Lectures: M-W-F, 8:45-9:50 a.m.
Lab: W 1:00-4:00 p.m.
Room: 303 ESNH
Texts:
Igneous & Metamorphic Petrology by John D. Winter
Petrography of Igneous and Metamorphic Rocks by A. R. Philpotts
An Introduction to Metamorphic Petrology by B.W.D. Yardley
Metamorphic Phase Equilibria and PTt paths by Frank S. Spear (‘72)
Expectations:
(1) Class, Lab and Field Trip attendance, on time as a courtesy to all!!
(2) Reading assignments completed prior to class/lab
(3) Written assignments completed on time and THAT THEY ARE YOUR WORK.
Evaluation:
(1) Exams 1& 3
(2) Exam 2
(2) Lab Exercises, Problem Sets & Field Trips
(3) Final Project
20%
25%
30%
25 %
Important Dates:
Exam I
Spring Break
Exam II
Cape Ann Field Trip
Vermont Field Trip
Exam III
Final Project
Week of February 22
Week of March 13-21
Week of March 22
March 28, Sunday, all day, 7:00am-9:00pm
April 23-25, Friday night, 7pm, through Sunday, 6pm,
Week of 3 May
Due at end of exam period, Friday, May 14
COURSE SCHEDULE
Date Lec#
25Jan
27-Jan
29-Jan
1
2
3
SUBJECT
READ
PART 1. IGNEOUS PETROLOGY A: Introduction
Mineralogy and chemistry
Norms and the CIPW basalt classification
Phil (99,114-123), Wint Ch1
Phil (100-107), Wint Ch 2,3
Phil (93-98)
B: Overview - origin and evolution of magmas
Rock groups and magma series
Tectonic settings of igneous rocks
Phil (107-113),
Win Ch 8 128-142,146-151
8-Feb 7
10-Feb 8
12-Feb 9
C. Phase Equilibria: Review unary & binary systems
Introduction to ternary systems
The system Fo-Di-An
Winter Ch 6
Winter Ch 7
Winter Ch 8 142-146
15-Feb 10
17-Feb 11
19-Feb 12
The system Fo-An-SiO2
The system Di-An-Ab
The effects of Pressure and volatiles on phase equilibria
Winter Ch 7
1Feb 4
3-Feb 5
5-Feb 6
EXAM 1: All Material LECT. 1-12:
22-Feb 13
24-Feb 14
26-Feb 15
1-Mar 16
3-Mar 17
5-Mar 18
8-Mar 19
10-Mar 20
12-Mar 21
During week of Feb. 22
D. Geochemistry: Introduction to trace elements
TEL behavior during crystallization and melting
Rare Earth Elements
Winter Ch 9 (1-6)
Sr/Rb isotopes
Sm/Nd isotopes
continued
Winter Ch 9 (12-17
Winter Ch 9 (17-18)
Winter Ch 10,11&13
E. Petrogenesis: Basalts/ MORB
Basalts, Plume
Basalts, Andesites and Granites
Winter Ch 10,11&13
Winter Ch 14 & 15
Winter Ch 16, 17 &Ch 18
Winter Ch 9 (6-12)
SPRING VACATION MARCH 13- 21, 2008
EXAM 2: All previous Material LECT 1-21:
22-Mar 22
24-Mar 23
26-Mar 24
During week of 22 March
PART 2. METAMORPHISM A: Introduction
B. Rocks and Variables
continued
Win Ch 21, Phil Ch 6
Winter Ch 22
FIELD TRIP TO Cape Ann: Sunday, March 28, 2008
29-Mar
31-Mar
2-Apr
25
26
27
C. Metamorphic Petrology: An overview
D. Metamorphism: A Physicochemical Approach
continued
Winter Ch 24
Date Lec#
SUBJECT
5-Apr 28 E. Metamorphism of Basalts: Facies and the ACF Diagram
7-Apr 29 F. Metamorphism of Peridotites: An Integrated Approach
9-Apr 30 continued
READ
Winter Ch 25
Winter Ch 29
12-Apr 31
14-Apr 32
16-Apr 33
G. Metamorphism of Carbonates & Mixed Volatiles
The System CaMS
Petrogenetic Grids and Facies Series
Winter Ch 29,30
19-Apr 34
21-Apr 35
23-Apr 36
H. Metamorphism of Pelitic Schists: The AFM subsystem
Reactions, Isograds and Petrogenetic Grids
Continuous Reactions, Extra Components and Reality
Winter Ch 26,27,28
FIELD TRIP TO VERMONT: Friday through Sunday April 23-25
26-Apr 37
28-Apr 38
30-Apr 39
Metamorphism; A Thermodynamic Approach:
Enthalpy, Entropy and the Gibbs Free Energy
Geothermobarometry
Winter Ch 5
Winter Ch27
Winter Ch 27
EXAM 3: All Material- Lectures 22-39 week of 3 May
3-May 40 J. Pelites: The Rest of the Story
5-May 41 Dehydration Melting of the earths crust
7-May 42 K. Regional Metamorphism and Tectonics
FINAL PROJECT DUE AT END OF FINAL EXAM PERIOD -FRIDAY MAY 14- 5:00pm
LABORATORY
Date Lab #
27-Jan
1
3-Feb
2
10-Feb
3
Classification and Textures of Igneous Rocks
Introduction to Igneous Petrography: Basalts
Basalts, Andesite and Rhyolite
17-Feb
24-Feb
3-Mar
12-Mar
Mafic Layered Intrusions
Ophiolites and the Upper Mantle
Granites
Quiz: Hand samples!!
4
5
6
7
17-Mar
24-Mar
8
31-Mar
9
7-Apr 10
14-Apr 11
21-Apr 12
28-Apr 13
5-May 14
NO CLASS: SPRING BREAK
READING:
Phil (93-139), Winter Ch 2&3
Ph (67-79), (124-134),W p182
Winter Ch 16 (293-304)
Winter P316-318, 326-330)
Winter Ch 12
Wint Ch 13(1-5)&10 (1-4)
Winter Ch 17 (12-26)
March 13-21
Metamorphic Rocks: Classification and Fabrics
Metamorphic Facies: Petrology of Metabasalts
Mineral Facies: Ultramafic & Carbonate Rocks
Pelitic Schists: Barrovian Pelites
Ultra High Pressure Metamorphism
Final Project
Final project
Phl (151-166), W Ch 2
Winter Ch 25
Winter Ch 29
Winter Ch 28