GEOL1500_04_PlateTectonics_Handout.docx - GEOL u2013 1500...

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GEOL – 1500 Earth Revealed Lab 5 – Plate Tectonics and Earthquakes Name: CIN: Purpose This laboratory assignment is intended to help you better understand the principles of plate tectonics theory by applying them to the past, present, and future analysis of a theoretical planet. Task During this lab exercise, you will analyze the plate tectonics of a theoretical planet called Geoworld , which shares a similar plate tectonics system to ours on Earth. This will be accomplished by using and interpreting a variety of geologic datasets such as a magnetic polarity time scale and a plate tectonics map featuring seafloor striping and various plate boundaries. All questions are in bold typed font and please put your final answers in the blanks provided after the question. Be sure to show your work (where calculations are needed) and answer all parts of each question. For questions that require highlighting on the map, feel free to use a photo editing software to draw the shapes needed (or print, draw, and then scan if you are able to). This lab will require a metric ruler (cm) and a calculator to complete. Note: The Plate Tectonic Map of Geoworld is available as a separate PDF file on Canvas Submission Format This laboratory assignment will be administered on Canvas. Please download it and use Word Processing software (such as Word or Google Docs) to answer the questions provided. Upload this completed assignment into the Canvas Assignment to complete your submission. This lab assignment is due October 13 11:59 PM . Grading Criteria Questions will be worth 1 or 2 points, depending on their complexity. For questions that require calculations, full work that shows how you arrived at your answer must be shown in order to achieve full credit. Your grade will be provided as a percentage score. Part 1: Analysis of the Present Geoworld
A. Sea Floor Magnetic Anomalies Geoworld has a magnetic field aligned in a north-south direction. The polarity of this field reverses at random intervals through time, just as the one on Earth does. The history of polarity of the magnetic field is well known for the past 150 million years and is shown by the adjacent magnetic polarity time scale. Shading represents normal polarity (the magnetic field points north) while white represents reverse polarity (the magnetic field points south).

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