GEOL 1301 - Lab 01 - Topographic Maps

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School

University of Texas, Arlington *

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Course

1301

Subject

Geology

Date

Feb 20, 2024

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docx

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4

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GEOL 1301 Name: Jonathan Venegas Topography Lab a Learning and Lab objectives: For this lab we will focus on the topographical maps. These are maps that contour elevation data and delineate the mountains and valleys that occur over the surface of the Earth. For a better idea of what this would look like from a birds eye view, there are two maps at the back of the classroom where the topography in these areas is mimicked by the plastic molds. Note that a single topographical contour will follow the same elevation along the side of the hills and valleys, and that the steeper the hill, the closer the contours are to each other. Lab instructions: The laminated topographic maps used for this activity cover a portion of the field trip area in Oklahoma. Complete the short-answer questions for Part 1 of this lab and then construct a profile along points A to B on the map for Part 2. Your instructor will go over the workflow for Part 2 at the beginning of class so please pay close attention. Don’t forget to put your name on the worksheets! Supplies needed for this lab: Ruler, simple calculator, piece of white paper, pencil, and eraser Terms and Concepts: Please review the following terminology in the online resources presented below: Topography (also addressed on Pg.6 of your textbook) Longitude and latitude (subdivisions in degrees, minutes, seconds) UTM coordinates True north versus magnetic north, magnetic declination Contour lines and contour interval Map scale Topographic profile Online Resources: https://en.wikipedia.org/wiki/Topographic_map http://en.wikipedia.org/wiki/Geographic_coordinate_system http://serc.carleton.edu/mathyouneed/slope/index.html 1
Part 1: General Aspects of Topographic Maps 1. What is the name of the quadrangle? Springer 2. What is the latitude along the North border of the map? 97°7°30° 3. What is the longitude along the East border of the map (in the northeast corner)? 34°14°00 4. What is the magnetic declination in the area covered by the map? 2° East 5. What is the contour interval on the map? 0.2 miles and 0.2 Kilometers 6. The street running approximately north-south in the eastern half of the map (marked with two parallel lines) is Interstate-35. What is the latitude and longitude at the place where I-35 crosses the boundary between Carter County and Murray County (to the nearest degree and half minute)? Latitude: 97°8°30 Longitude: 34°22°30° 7. What is the elevation of this location? 1250 8. What is the ratio scale of the map? 1.24000 2
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