name 3.8 topographic maps lab assignment...3.8 topographic maps lab assignment note: this lab is in...

Page | 54

Introductory GeoloGy topoGraphIc Maps

Name________________________

3.8 toPoGrAPhIc mAPS LAb ASSIGnment

Note: This lab is in color. Therefore, if you print it out in black and white

please refer back to the electronic copy to avoid confusion.

This Lab Assignment is to be mailed to your Instructor at the contact address

recorded in the Syllabus. Make sure that you use additional postage if needed.

There is no online assessment for the Topographic Maps Lab.

Complete the entire assignment and mail to your instructor postmarked by the

assignment deadline. You should make an extra copy to practice on and mail in a

clean and neat version for grading. Make sure to include your name on every page

and staple all of the pages together.

Please take advantage of all of the resources available to you. Be sure to read

the corresponding lecture which contains directions to work out the solutions to

the problems below. You should also review the instructional videos located in

the unit content area within the course for additional assistance. Finally, check

the Topographic Map Unit Discussion forum and the tutor talk area for additional

resources and hints.

3.8.1 topographic maps Lab

NOTE: For all of the following igures, assume North is up.

1. (10 pts) The following topographic map (Map 3.1) is from a coastal area and

features an interesting geological hazard in addition to the Ocean. Using a

contour interval of 40 meters, label the elevation of every contour line on the

map below. (Note: elevation is meters above sea level, which makes sea level =

___m).

map 3.1

Author: Brad Deline

Source: Original Work

License: CC BY-SA 3.0

Page | 55


2. (10 pts) Imagine you are a geologist for the United States Geological Survey.

You are tasked with creating your own coastal Topographic map, so you hike

around the area with a GPS receiver (Global Positioning System) and every so

often you record your position along with the elevation in meters at that point,

which results in the following map (Map 3.2). Complete Map 3.2 by adding in

the contour lines using a contour interval of 100 meters. Draw the contour lines so

that they are continuous (do not die of), and either continue of the map or form an enclosed circle (look at the topographic map in the problem 1 for an

example). More often than not, your contour lines will fall between the GPS

points on your map, so do your best to determine the contour line positions.

For questions 3-7 refer to the Map 3.3. The following topographic map shows

an interesting and informative geological feature called a drumlin, which is a pile

of sediment left behind by a retreating glacier.

map 3.2

Author: Brad Deline



map 3.3

Author: Brad Deline



Page | 56


3. (2 pts) What is the contour interval on Map 3.3?

4. (2 pts) What is the regional relief on Map 3.3?

5. (5 pts) Using the contour lines on Map 3.3, which area along the red line is steeper A to B or B to C? Explain how you came to this conclusion.

6. (5 pts) What is the gradient from A to B and B to C on Map 3.3? Show your work.

7. (2 pts) Drumlins can be used to determine the direction of movement in the

glacier with the glacier moving toward the shallower side of the structure. Using

your previous answers for Map 3.3, what direction was the glacier traveling?

Note: unless indicated otherwise, assume that North is up (towards the top of

the map).

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8. (20 pts) Construct a topographic proile from A to A’ on the graph paper below.

9. (5 pts) Based on the scale you choose for the topography (vertical axis) in question 8, calculate the amount of vertical exaggeration on the topographic

proile you constructed above. Show your work.

map 3.4

Author: Brad Deline



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For this part of the lab you will need to use Maps 3.5 and 3.6 (appearing at the end of this chapter). Following Maps 3.5 and 3.6 is a Map Key that you can use to identify the various symbols found on topographic maps.Also, note that the maps are in color and the colors have signiicance in terms of the symbols.

Questions 10-18: Rome North Quadrangle (27 pts)10. (2 pts) What is the ratio scale of this map?

11. (2 pts) Explain in a sentence how this type of scale works.

12. (2 pts) What is the latitude on the north edge of the map?

13. (2 pts) What is the longitude on the east edge of the map?

14. (6 pts) Find Big Dry Creek, which is north of Rome. What direction does that river low? Explain two reasons why you came to this conclusion.

15. (2 pts) Examine the large Ridge in the Northwestern portion of the map. What is the tallest point in this ridge? How tall is it?

16. (2 pts) How much higher is that point from Lake Conasauga?

17. (5 pts) What is the gradient between Lake Conasauga and the tallest point in the ridge? Show your work (Hint: zooming out will let you see both features on

the map at the same time and may make it easier to measure).

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18. (4 pts) How would the gradient change if you measured from Swan Lake to the

tallest point in the ridge rather than Lake Conasauga? Explain why.

Questions 19-22: Grand Tetons (12 pts)19. (3 pts) Explain why this map is referred to as a 7.5 minute map?

20. (3 pts) What is the relief on this map?

21. (2 pts) Does Taggert Creek low into Taggert Lake or Lake Taminah? What direction does the creek low?

22. (4 pts) Garnet Canyon (a little to the west of the word Garnet) is a common

camping location for hikers and mountain climbers at the Grand Teton’s

National Park. Examine the topography surrounding Garnet Canyon and the Middle Teton. What would be the easiest and safest route from Garnet Canyon to the top of the Middle Teton? Explain why. (Drawing a simple map will help).

maps 3.5, 3.6, and map Key (appearing on following pages)

Author: USGS

Source: USGS

License: Public Domain

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GEORGIA

QUADRANGLE LOCATION

ROME NORTH QUADRANGLEGEORGIA-FLOYD CO.

7.5-MINUTE SERIES

ROME NORTH, GA

2014

Expressway Local Connector

ROAD CLASSIFICATION

Ramp 4WD

Secondary Hwy Local Road

Interstate Route State RouteUS RouteWX ./ H

This map was produced to conform with the

National Geospatial Program US Topo Product Standard, 2011.A metadata file associated with this product is draft version 0.6.16

CONTOUR INTERVAL 10 FEET

NORTH AMERICAN VERTICAL DATUM OF 1988

SCALE 1:24 000

1000 500 0 METERS 1000 2000

21KILOMETERS00.51

1 0.5 0

MILES

1

1000 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000

FEET

U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY

1 Summerville

8 Wax

2 Armuchee

3 Plainville

4 Rock Mountain

5 Shannon

6 Livingston

7 Rome South

ADJOINING QUADRANGLES

1 2 3

4 5

6 7 8

Imagery...............................................NAIP, August 2010

Roads....................................................... HERE, ©2013Names..........................................................GNIS, 2013

Hydrography....................National Hydrography Dataset, 2010Contours............................National Elevation Dataset, 2009

Boundaries............Multiple sources; see metadata file 1972 - 2013

North American Datum of 1983 (NAD83)

World Geodetic System of 1984 (WGS84). Projection and1 000-meter grid: Universal Transverse Mercator, Zone 16S

Produced by the United States Geological Survey

10 000-foot ticks: Georgia Coordinate System of 1983 (westzone)

This map is not a legal document. Boundaries may be

generalized for this map scale. Private lands within government

reservations may not be shown. Obtain permission beforeentering private lands.

U.S. National Grid

100,000-m Square ID

Grid Zone Designation

FD

FC

3800

16S

^

ØMN

GN

UTM GRID AND 2014 MAGNETIC NORTHDECLINATION AT CENTER OF SHEET

1° 1´18 MILS

4° 23´78 MILS

Area exposed at mean low tide; sounding datum line***

Channel***

Sunken rock***

BATHYMETRIC FEATURES

BOUNDARIES

National

State or territorial

County or equivalent

Civil township or equivalent

Incorporated city or equivalent

Federally administered park, reservation, or monument (external)

Federally administered park, reservation, or monument (internal)

State forest, park, reservation, or monument and large county park

Forest Service administrative area*

Forest Service ranger district*

National Forest System land status, Forest Service lands*

National Forest System land status, non-Forest Service lands*

Small park (county or city)

BUILDINGS AND RELATED FEATURES

Building

School; house of worship

Built-up area

Forest headquarters*

Ranger district offi ce*

Guard station or work center*

Racetrack or raceway

Airport, paved landing strip, runway, taxiway, or apron

Gaging station

Located or landmark object (feature as labeled)

Covered reservoir

Boat ramp or boat access*

Unpaved landing strip

Well (other than water), windmill or wind generator

Tanks

Roadside park or rest area

Campground

Picnic area

Winter recreation area*

Cem Cemetery

Athletic fi eld

COASTAL FEATURES

Foreshore fl at

Coral or rock reef

Group of rocks, bare or awash

Breakwater, pier, jetty, or wharf

Seawall

Exposed wreck

18 23 Depth curve; sounding

Oil or gas well; platform

Rock, bare or awash; dangerous

to navigation

CONTOURS

Index 6000

Approximate or indefi nite

Intermediate

Approximate or indefi nite

Depression

Cut

Fill

Supplementary

Continental divide

Index***

Intermediate***

Index primary***

Primary***

Supplementary***

Bathymetric

Topographic

Third-order or better, permanent mark

With third-order or better elevation

With checked spot elevation

Coincident with found section corner

Unmonumented**

Neace

BM

52

1012

Cactus

Horizontal control

CONTROL DATA AND MONUMENTS

Third-order or better elevation, with tablet

Third-order or better elevation, recoverable mark, no tablet

With number and elevation 456767

5628

BM9134

U.S. mineral or location monument

Principal point**

River mileage marker Mile

69

USMM 438

Boundary monument

Third-order or better elevation, with tablet

Third-order or better elevation, recoverable mark, no tablet

Bench mark coincident with found section corner

Spot elevation

528

BM

5280

BM

5280

7523

CONTROL DATA AND MONUMENTS – continued

Vertical control

Contours and limits

Glacial advance

Formlines

Glacial retreat

GLACIERS AND PERMANENT SNOWFIELDS

LAND SURVEYS

Range or Township line

Protracted

R1E T2N R3W T4S Range or Township labels

Section line

Protracted (AK 1:63,360-scale)

Location doubtful

Location approximate

Location doubtful

Protracted

Protracted (AK 1:63,360-scale)

Found section corner

Found closing corner

WC

Witness corner

MC Meander corner

Weak corner*

Location approximate

Section numbers 1 - 36 1 - 36

Other land surveys

Range or Township line

Section line

Fence or fi eld lines

Land grant, mining claim, donation land

claim, or tract

Land grant, homestead, mineral, or

other special survey monument

Public land survey system

State plane coordinate systems

Universal transverse metcator grid

MARINE SHORELINES

Shoreline

Apparent (edge of vegetation)***

Indefi nite or unsurveyed

MINES AND CAVES

Quarry or open pit mine

Gravel, sand, clay, or borrow pit

Mine tunnel or cave entrance

Mine shaft

Prospect

Tailings

Former disposal site or mine

Mine dump

Graticule intersection

PROJECTION AND GRIDS

Neatline 39˚15’

90˚37’30”

Graticule tick 55’

Datum shift tick

247 500 METERS Secondary zone tick

260 000 FEET Tertiary zone tick

98 500 METERS Quaternary zone tick

320 000 FEET Quintary zone tick

273 UTM grid (full grid)

269 UTM grid ticks*

640 000 FEET Primary zone tick

RAILROADS AND RELATED FEATURES

Standard guage railroad, single track

Standard guage railroad, multiple track

Narrow guage railroad, single track

Narrow guage railroad, multiple track

Railroad siding

Railroad underpass; overpass

Railroad bridge; drawbridge

Railroad tunnel

Railroad yard

Railroad turntable; roundhouse

Railroad in highway Railroad in road Railroad in light duty road*

RIVERS, LAKES, AND CANALS

Perennial stream

Perennial river

Intermittent stream

Intermittent river

Disappearing stream

Falls, small

Falls, large

Rapids, large

Rapids, small

Masonry dam

Dam with lock

Dam carrying road

ROADS AND RELATED FEATURES

Primary highway

Secondary highway

Light duty road Light duty road, paved* Light duty road, gravel* Light duty road, dirt* Light duty road, unspecifi ed*

Please note: Roads on Provisional-edition maps are not classifi ed

as primary, secondary, or light duty. These roads are all classifi ed as

improved roads and are symbolized the same as light duty roads.

4WD road 4WD road* Trail

Unimproved road Unimproved road*

Highway or road under construction

Highway or road underpass; overpass

Highway or road bridge; drawbridge

Highway or road tunnel

Road block, berm, or barrier*

Gate on road*

Highway or road with median strip

Trailhead* T

H

RIVERS, LAKES, AND CANALS – continued

Intermittent lake/pond

Perennial lake/pond

Dry lake/pond

Wide wash

Narrow wash

Canal, fl ume, or aqueduct with lock

Elevated aqueduct, fl ume, or conduit

Aqueduct tunnel

Water well, geyser, fumarole, or mud pot

Spring or seep

Topographic Map InformationFor more information about topographic maps

produced by the USGS, please call:

1-888-ASK-USGS or visit us at http://ask.usgs.gov/

SUBMERGED AREAS AND BOGS

Marsh or swamp

Submerged marsh or swamp

Wooded marsh or swamp

Submerged wooded marsh or swamp

Land subject to inundation

SURFACE FEATURES

Levee

Sand or mud

Disturbed surface

Gravel beach or glacial moraine

Tailings pond

Power transmission line;

pole; tower

Telephone line

Aboveground pipeline

Underground pipeline

TRANSMISSION LINES AND PIPELINES

VEGETATION

Shrubland

Mangrove

Vineyard

Orchard

Woodland

* USGS-USDA Forest Service Single-Edition

Quadrangle maps only.In August 1993, the U.S. Geological Survey and the

U.S. Department of Agriculture’s Forest Service signed

an Interagency Agreement to begin a single-edition

joint mapping program. This agreement established the

coordination for producing and maintaining single-edition

primary series topographic maps for quadrangles containing

National Forest System lands. The joint mapping program

eliminates duplication of effort by the agencies and results

in a more frequent revision cycle for quadrangles containing

National Forests. Maps are revised on the basis of jointly

developed standards and contain normal features mapped

by the USGS, as well as additional features required for effi -

cient management of National Forest System lands. Single-

edition maps look slightly different but meet the content,

accuracy, and quality criteria of other USGS products.

*** Topographic Bathymetric maps only.

** Provisional-Edition maps only.Provisional-edition maps were established to expedite

completion of the remaining large-scale topographic

quadrangles of the conterminous United States. They

contain essentially the same level of information as the

standard series maps. This series can be easily recognized

by the title “Provisional Edition” in the lower right-hand

corner.

Printed on recycled paper

name 3.8 topographic maps lab assignment...3.8 topographic maps lab assignment note: this lab is in...

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