Format = ~27 Multiple Choice, ~14 True/False, ~9 Matching Geology 100 Exam #1 Format = ~27 Multiple Choice, ~14 True/False, ~9 Matching ~20% from Discussion/~80% from Lecture Coverage First 4 weeks of Discussion (Topographic Maps I - Eye for Rocks) Corresponds to Chapters 1, 2, 4, + 5 in Discussion Guide Lectures #1 - 9 (Why Study Geology? - Hard Rock/Igneous + Metamorphic.) Tuesday (Sept. 27) 7 - 8 pm Note lecture meets at 10am and Noon on Wed., 9/28 228 Natural History Building(Noon Lecture Section) 100 Material Science Engineering Building (10AM Lecture Section) *** BRING STUDENT ID *** Question/Answer Session = Mon. (Sept. 26) 5 - 6 pm, 141 Loomis Lab Previous Exam #1 on home page of GEOL 100 Illinois Compass Web site; no answer key provided with old Exam, attend Question/Answer Session for answers. Conflict Exam Format = 15 Short Answer questions Level of Difficulty = Similar to regularly scheduled Exam Sign up before or after Lecture or by e-mail to Prof. Altaner Wed. (9/28) 5 - 6 pm, 260 NHB (GEOL 100 Discussion room) Other times for Conflict Exam are available, if essential See Frequently Asked Questions #23, 25, and 32 for advice from Prof.Altaner on how to prepare for the exam
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.
Grain Size Page 27 Fine Medium Coarse Glassy
Arrangement - Cemented
Arrangement – Interlocking Page 28
Arrangement - Foliated Arrangement - Frothy
04_02.jpg Igneous Rocks Page 29– cooling of magma or lava. Intrusive and Extrusive Composition: silicic, mafic, intermediate
Sedimentary Rocks Chemical – precipitated from water – interlocking Clastic – cemented fragments Carbonates – cemented shell fragments Chemical – precipitated from water – interlocking Composition (Minerals): calcite, dolomite, quartz, halite
Regional Metamorphism - Foliation
06_17.jpg Marble Limestone Contact Metamorphism of Limestone