Lab Final Review - REVIEW FOR GEO 303 LAB FINAL TOPOGRAPHIC...

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REVIEW FOR GEO 303 LAB FINAL TOPOGRAPHIC MAPS Map Grids Latitude : Rings around Earth parallel to Equator - Divided into 90°S and 90°N around the Equator (0°) Longitude : Circles that pass through both poles (MERIDIANS) - Divided into 180°E and 180°W around the Prime Meridian 1 degree (°) = 60 minutes (') = 3600 seconds (") Ex.) Latitude: 37°14'32"N Longitude: 97°32'15"E Contour Lines Contour Line : connects all points of equal elevation on the land surface Contour Interval : the difference in elevation between adjacent contour lines Relief : the difference in elevation between local high and low spots Important Rules obeyed by Contour Lines 1) Contour lines do not run into a body of standing water. 2) Contour lines do not cross one another. 3) ALL contour lines are closed loops. 4) Contour lines point, or "V" upstream. ADDITIONAL THINGS TO KNOW ABOUT CONTOUR LINES - Closely spaced contour lines represent a steep slope. - Widely spaced contour lines represent a gentle slope. -closed depression symbol: circle with hachures - Review methods on how to contour a map-pg 332 TYPES of MAP SCALES Ratio Scale: 1:24000 (1 in. = 24000 in.; 1 ft = 24000 ft, etc.) Verbal Scale: 1 inch = 2000 feet Bar Scale Gradient : expresses the slope of the land (= Relief/Path Distance) ex.) 30 ft./2.5 mi = 12 ft. per mile Vertical Exaggeration : gives the number of times the vertical scale is exaggerated relative to the horizontal scale. ex.) Horizontal Scale: 1"= 2000', Vertical Scale: 1"= 500' VERTICAL EXAGGERATION = (2000'/500') = 4 times --- Refer to your quizzes, handouts and homework; READ CH. 17 ---
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STRUCTURAL GEOLOGY Terms to know: (see Chapter 18 and Review Structure Lab Homework) OTHER SHEET: Unconformity • Stress vs . Strain Compression Tension • Shear Strike Dip Joint Fault • Slickensides Normal Fault Reverse Fault Thrust Fault • Axial Plane Fold Axis Limb Fault Plane Horst/Graben Strike-Slip fault : movement of the footwall and the hanging wall blocks is parallel to the strike of the fault plane. Dip-Slip fault : movement of the footwall and the hanging wall blocks is parallel to the dip direction of the fault plane. FOLDED ROCKS
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This note was uploaded on 03/21/2012 for the course GEO 303K taught by Professor Leon during the Spring '10 term at University of Texas at Austin.

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Lab Final Review - REVIEW FOR GEO 303 LAB FINAL TOPOGRAPHIC...

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