Tectonic Earthquakes Most earthquakes occur at plate margins due to tension, compression or shearing forces. Rocks at plate margins are in constant motion and are being pushed, pulled, bent, twisted and folded

Corresponding author. E-mail address: ring@mail.uni-mainz.de (U. Ring) 1 Institut für Geowissenschaften, Johannes-Gutenberg Universität, Becherweg 21, 55099 Mainz, Germany 2 Department of Geology and Geophysics, Yale University, 210 Whitney Avenue, New Haven, CT 06520, USA January

1. Interpret the geologic history of the grand Canyon using the diagram below. List the events in order from the oldest(at the bottom of the page) to the youngest( the top of the page). For each event describe the principle or observation you used

September 8, 2000 1. Describe the difference between slip and separation on a fault. 2. What type of offset() can be interpreted from the map below? Give a detailed description of your logic on the back of the page

Complete the block diagrams for the following features. Be sure to include the appropriate map symbols on your drawings

1. What is the significance of the concept of \principal stress\? 2. Sketch a 2D stress ellipse for the case 01=5GPa and 02= 2GPa where 01 is vertical

1. Place all books and notes on the floor. 2. Read each question carefully, then read it again. 3. Think before you write. 4. Organize your thoughts and outline your answer mentally before writing. If you are

1. Place all books and notes on the floor. 2. Read each question carefully, then read it again. 3. ThinkThinkThinkThinkThink

《构造地质学》（英文版）Quiz 1

1. Compare Stearns' Type 2 fracture pattern to the okljoints from the class notes. Draw a diagram and discuss the nature and occurrence of the fracture(s)