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USA GY 301 - GY 301 SYLLABUS

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1GY 301: GeomorphologyGY 301: GeomorphologyLecture 1: Overview of course content; Introduction to topographic mapsUNIVERSITY OF SOUTH ALABAMAToday’s Agenda1. Contact info for D. Haywick2. Course Outline (syllabus)3. GY 301 (website)4. Introduction to topographic mapsDr. Doug HaywickContact InformationOffice: LSCB 049Telephone: 460-7569E-mail: [email protected] Hours: see syllabusDr. David AllisonContact InformationOffice: the beachTelephone: 1-800-CoronaE-mail: see aboveOffice Hours: are you kidding?Dr. David AllisonMy course objectives:1) teach you develop skills in landform recognition and interpretation2) teach you to be able to do topographic contouring, map navigation & topographic profiles3) teach you fundamental surveying skills with the alidade and total station, and mineral and rock resource calculation4) prep you for GY 402, 403 and 480 (field school) Supporting Materials1. Syllabus2. Web site (in prep)2Syllabus SyllabusWeekly subject material in numbered lectures SyllabusWeekly lab assignments SyllabusAssessment: Percentages are fixed, but the break down of lab assignments has not yet been decided SyllabusAssessment: Percentages are fixed, but the break down of lab assignments has not yet been decided SyllabusDoug Schedule: This will NOT be a good semester3SyllabusDoug Schedule: This will NOT be a good semester Supporting Materials1. Syllabus2. Web siteThere is no text book* or lab for GY 301Eventually, lectures and lab exercises will be available on line:www.southalabama.edu/geology/haywick* Dr Allison recommends a general Physical Geology textbookTopographic MapsKnow your enemy!http://www.nyroute30.com/maps/big_tupper_ski_resort_topo_map.jpgTopographic MapsKnow your enemy!• Scale (Relational Fraction; Graphical)Topographic MapsKnow your enemy!• Scale (Relational Fraction; Graphical)• Elevation contours (Relative to M.S.L)Topographic MapsKnow your enemy!• Scale (Relational Fraction; Graphical)• Elevation contours (Relative to M.S.L)• Boundary (Latitude & Longitude)4Topographic MapsKnow your enemy!• Scale (Relational Fraction; Graphical)• Elevation contours (Relative to M.S.L)• Boundary (Latitude & Longitude)•Color(Water bodies, Woodlands, etc.)Topographic MapsKnow your enemy!• Scale (Relational Fraction; Graphical)• Elevation contours (Relative to M.S.L)• Boundary (Latitude & Longitude)•Color(Water bodies, Woodlands, etc.)•Cultural Features(man-made features)Scale• At the bottom of the map; two typesScale• At the bottom of the map; two types1) Graphical1) GraphicalScale• At the bottom of the map; two types2) Relational Fraction (RF)2) Relational Fraction (RF)Scale• Relational fraction: 1:24,0005Scale• Relational fraction: 1:24,000– 1 inch on the map = 24,000 inches in realityHow many feet is this?Scale• Relational fraction: 1:24,000– 1 inch on the map = 24,000 inches in reality– 1 inch on the map = 24,000 inches x 1 foot/12 inches= 2000 feetHow many miles is this?Scale• Relational fraction: 1:24,000– 1 inch on the map = 24,000 inches in reality– 1 inch on the map = 2000 feet x 1 mile/5280 ft– 1 inch = 0.378 milesElevation Contours• Contour lines (Brown)– Based on aerial photographs analyzed stereographically– Must agree with benchmarks and spot elevations– Contour interval: elevation change between adjacent contours– Hachured contours indicate closed depressionshttp://www.jesseshunting.com/images/topo-bench-saddle1.jpgConstruction of Topographic Contours• Contours of any parameter use a simple proportionality rule• Contours should “V” in the upstream direction across valleys (Law of the V’s-part 1).xxxx80808777flowx85Topographic contours in 3DChalk Board6Topographic contours in 3DContours: can delineate geological contactsTopographic Map Boundaries• Always consist of lines of latitude and longitude• Contain tick marks of UTM and SPCS on the border32 7’ 30’’32 15’103 22’ 30’’103 30’32 7’ 30’’32 15’103 30’103 22’ 30’’7.5’ TopographicQuadrangle border (1:24,000)Topographic Map Colors• Brown: topographic contours• Green: Forest and/or wetlands••WhiteWhite: cleared areas (i.e. pastures, etc.)• Black: Cultural features (buildings, roads)•Red: Land office grid system (Township & Range system); Major road systems• Magenta: Photo-revised areas•Blue:water bodiesTopographic Map Examples Map Coordinate Systems• Land Office Grid system (Township & Range)• Universal Transverse Mercator (UTM)• State Plane Coordinate System (SPCS)7Map Coordinate Systems• Land Office Grid system (Township & Range)http://www.geomore.com/images/extr.jpgTownshipsRangesLand Office Grid SystemT1NT2NT1ST2SR1E R2ER1WR2WState Capital61712131819 2425303136 squaremiles366 milesNW NESETarget locationLegal description of location:NE ¼ , SW ¼, section 22, T2S, R2ELand Office Grid Example:• Benchmark 212:– NW ¼, NE ¼, sec. 36, T3S, R3WUpcoming StuffHomeworkGet supplies ready (first lab Friday)Next Lecture: More topographic maps, transits and pacingFriday’s Lab: Outside: pacing and scale exercises. Potentially long day. Bring water, hiking boots, hat, sunscreen


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