PETROLOGY AND PETROGRAPHY: GEO305

DR. JONATHAN M. HUSCH


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OFFICE: S323D or S253 (my lab). Scheduled office hours may vary from semester to semester, but typically are Tuesday and Thursday, 8:45-9:45 a.m., and Friday, 2:20-3:20 p.m. Other times may be scheduled or you can drop by to see if I am free. Voice mail messages may be left at (609) 896-5330. Email messages may be sent to husch@enigma.rider.edu.

TEXT: Petrology by H. Blatt and R. Tracy (BT) and Petrography of Igneous and Metamorphic Rocks by A. Philpotts (P). In addition, Microscopic Identification of Crystals by Stoiber and Morse (SM) from Elements of Mineralogy (GEO201) will be needed for optical assignments. Supplemental readings may be assigned as required (TBA).

OBJECTIVES AND EVALUATION: This course examines the origin, evolution, and distribution of igneous and metamorphic rocks on the basis of physiochemical studies and natural occurrences. Lab assignments emphasize the continuing development of optical microscopy skills and their application to the petrographic description and interpretation of selected rock hand samples and thin sections. Final grades are based on the uncurved average of three equally weighted class exams (75%) combined with the average of weekly lab assignments (25%). General grade averages are: >90, A range; 80-89, B range; 70-79, C range; 60-69 D range; <60, F range. Attendance is required. When needed, the instructor's permission for withdrawal will be given only for exceptional circumstances and with the permission of the student's advisor.

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WEEK TOPICS READING
1    Class organization; Igneous environments, textures, and structures

   Lab 1: Review of isotropic and anisotropic mineral optics
   BT: Chaps 1-2
   P: Chaps 1-2, 5
   SM: Chaps 1-9
2    Igneous chemistry and classification

   Lab 2: Igneous rock classifications and CIPW norm calculations
   BT: Chap 3
   BT: Append 1
   P: Chap 4
3    Unary and simple binary phase diagrams

   Lab 3: The optical properties of biaxial minerals I
   BT: Chap 4
   SM: Chaps 10-11
   P: Chap 2
4    Complex binary and simple ternary phase diagrams

   Lab 4: The optical properties of biaxial minerals II
   BT: Chap 5
   SM: Chaps 12-13
   P: Chap 2
5    FIRST EXAM; Magma evolution and diversification processes

   Lab 5: Optical determination of igneous mineral compositions
   BT: Chap 6

   P: Chap 3
6    The mantle and the earth's interior; Oceanic igneous rocks

   Lab 6: Basalts
   BT: Chaps 7-8

   P: Chap 4
7    Convergent margin igneous rocks

   Lab 7: The Palisades sill and the differentiation of basalts

   PALISADES SILL AND NEWARK BASIN FIELD TRIP (tentative)
   BT: Chap 9

   P: Chaps 4-5

   TBA
8    Continental igneous rocks

   Lab 8: Calc-alkaline igneous rocks at convergent margins
   BT: Chap 10

   P: Chaps 4-5
9    SECOND EXAM; Introduction to metamorphism

   Lab 9: Hypersolvus and subsolvus granites
   BT: Chap 18

   P: Chaps 4-5
10    Metamorphic isograds, facies, assemblages, and phase diagrams

   Lab 10: Identification of common metamorphic minerals
   BT: Chaps 19-20

   P: Chap 6
11    Metamorphic reactions, Prograde metamorphism of pelitic rocks

   Lab 11: A prograde metamorphic pelitic sequence

   WISSAHICKON CREEK METAMORPHICS FIELD TRIP (tentative)
   BT: Chaps 21, 23

   P: Chap 6

   TBA
12    Metamorphism of mafic and ultramafic rocks

   Lab 12: Various metamorphic assemblages and facies
   BT: Chap 22

   P: Chap 6
13    Metamorphism of calcareous rocks

   Lab 13: Petrotectonic discrimination diagrams; Geothermobarometry
   BT: Chap 24
   BT: Append 2
   TBA
   THIRD AND FINAL EXAM (FINALLY!)
   Date and time of the exam changes from semester to semester.
   Please check final exam schedule for the appropriate semester.

Note: Course schedule may change slightly due to unforeseen circumstances or class interest and progress.