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

November 1, 2000 1. Draw a 2 dimensional Mohr Circle representation for the following stress conditions

This type of problem will be on the test! 1. Calculate the force at the base of a continental block that has a uniform thickness of 25km, length of1000km, width of500km, and density of2.70. What is the stress on the bottom of the block?

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

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

September 1, 2000 1. The following map shows the principal azimuths for fractures measured on the Brokenback feature in Wyoming. Interpret the fracture pattern using your knowledge of joints and joint systems Prepare a written (1 paragraph)analysis

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

第一章、绪论： 第二章、基础构造地质学

第一章、绪论： 1． 什么是构造地质学？研究意义何在？ 2． 构造地质学的研究方法包括什么？你知道多少？ 3． 构造地质学的研究内容包括那几个方面？构造地质学的学科分类与学科交叉关？ 5． 列举一些你所见过的地质构造现象

（1） 解释术语构造地质学中的几何学、 运动学和动力学。可以举例或绘图说明