PPT-GEOL 15 Introduction to Earthquakes

and Geologic Hazards 3 units Fall 2013 Section E4736 MampW 250415PM Room HMHU125 Jason Jay R Patton JasonPattonredwoodsedu httpscienceearthjaycompageid482. By. : 10 grade. What is an earthquake ?. Simply, earthquakes are the rumblings, shaking or rolling of the earth's surface. It is usually what happens when two blocks of the earth suddenly slip past one another, or break apart from each other as a result of tension caused by prolonged energy build up. . Supplementary material to . Aerden, 1991 (J. Struct. Geol.). Aerden 1991 – J. Struct. Geol.. 100m. WOODEN BLOCKS MODEL. Fold interpretation of Brathwaite, 1970. 45. ORE LENS . E. ORE LENS G. ORE LENS . 2. TODAYS . MATERIAL:. Introduction to the Course. The Quaternary . Period. Climatic . and Geologic Processes. Instructor:. Jason Robert Patton . Email: . Jason.Patton@humboldt.edu. . Office:. Founders Hall 22 . Chapter 2 Section 3. Objectives. F.2.3.1. Explain how a seismograph works.. F.2.3.2. Describe how Geologists monitor faults.. F.2.3.3. . Explain how . seismograph data is used.. The Seismograph. Seismic waves cause the seismographs drum to vibrate but the suspended weight with the pen attached moves very little. Therefore the pen remains still and records the vibrations on the drum.. They Shape Our Landscape. As plates move, we may feel these movements as earthquakes. If there were no plate motions, our planet would not look like home. There would be no mountains, no valleys, no plateaus . . By : . Deavian. foster . Class : 5H. What is an earthquake?. A earthquake is a shaking of the earths crust and is a geological phenomenon . Earthquakes can cause intense vibration of the ground, soil liquefaction, and distortion of the ground. Earthquakes can happen almost anywhere but are most common along the boundaries of the tectonic plates. Earthquakes are primarily caused of movement of the tectonic plates. It lasts more than a few seconds.. Earth’s Dynamic Crust. Original Horizontality (law of superposition):. Assumption . that sedimentary/igneous rocks form in horizontal layers . Deformity. Folded: Layers are bent/curved. Deformity. Earthquakes. What if you knew the epicenter was . 572 . km from Vancouver?. Earthquakes. What if you ALSO know that it is . 884 . km from Prince Rupert?. Earthquakes. Finally, you also know that the epicenter is . Why you need to prepare for the next earthquake . Alaska has more earthquakes than any other region of the U.S. . And in fact is one of the most seismically active area of the world.. Great earthquakes (Earthquakes larger than magnitude 8) rock the state on average every 13 years since the 1900. . William Mackaness, Carol Blackwood, Charlotte Graves. Institute of Geography. School of GeoSciences. University of Edinburgh. Drummond St, Edinburgh EH8 9XP. william.mackaness@ed.ac.uk. Earthquakes. Measure on a Richter scale 1-7. Glaciers. Earthquakes. Rivers. GEOL 131:Running Water. GEOL 131:Running Water. GEOL 131:Running Water. Precipitation and snowmelt can:. Infiltrate . absorbed into ground. becomes part of groundwater. By: Dan Arrington. EAS 4480. Spring 2012. Image obtained from: http://www.survival-goods.com/What_is_an_Earthquake_s/269.htm. Background Information. Richter Scale. Measures magnitude. Energy released. COMMON plumeswere initially thought to consist of primitive mantle (e.g., Schilling, 1973). As we found, mixing be-tween primitive and depleted mantle can explain the Sr and Nd isotopic compositions You are NOT courses on this list . You must meet course requisites or have permission from course instructor . Contact instructor directly as needed. Page 1 of 2 05/21/21 rh List of Approved