1. *** BRING PHOTO ID *** Question/Answer Session = Monday (September 27)
Geology 100 Exam #1
Format ~22 Multiple Choice, ~16 True/False, ~12 Matching ~20% from Discussion/~80% from Lecture
Coverage First 4 Discussions (Topographic Maps I - Eye for Rocks) Corresponds to Chapters 1, 2, 4, and 5 in Discussion Guide Lectures #1 - 9 (Why Study Geology? - "Hard Rock"-Igneous/Metamorphic Rock)
Tuesday (September 28) pm (NOTE: Normal Lecture meets at 10 am and Noon on Wednesday, September 29.) 228 Natural History Building (last names A - L) 100 Materials Sci. Eng Building (1304 W. Green Street, Urbana; last names M - Z)
*** BRING PHOTO ID *** Question/Answer Session = Monday (September 27)
5 - 6 pm 228 Natural History Building
Previous Exam #1 is available on home page of class web site. No answer key is provided with old exam. Attend Question/Answer session for answers. Conflict Exam
Format = 15 Short Answer questions
Level l of difficulty = Similar to regular scheduled Exam
Sign up before or after lecture or by to Prof Altaner
Wed.29 September 5 -6PM, 260NHB(GEOL 100 Discussion room)
See Frequently Asked Questions #23, 25, and 32 for advice from
Prof. Altaner on how to prepare for the exam.

2. Identification of Rocks is by texture and composition
Rocks are aggregates of minerals
Identification of Rocks is by texture and composition
Texture is the size, shape and arrangement of grains
Composition is the minerals in the rock.

3. Grain Size
Fine
Medium
Coarse
Glassy

4. Arrangement – Cemented Page 29

5. Arrangement – Interlocking Page 30

6. Arrangement - Foliated Page 30
Arrangement - Frothy

7. 04_02.jpg Igneous Rocks Page 31– cooling of magma or lava.
Intrusive and Extrusive
Composition: silicic, mafic, intermediate

8. Sedimentary Rocks Page 31
Clastic – cemented fragments
Carbonates – cemented shell fragments
Chemical – precipitated from water
Composition (Minerals): calcite, dolomite, quartz,
halite

9. Metamorphic Rocks Page 32
Rocks which form when preexisting rocks have been changed as a result of increases in temperature and or pressure without melting

10. 06_17.jpg
Marble
Limestone
Contact Metamorphism of Limestone Page 35