GEOLOGIC PLACE NAMES in CHICAGO. CHICAGO ROCKS! Geology in the City (ESCI 109). Dr. Sanders

GEOLOGIC PLACE NAMES IN CHICAGO. CHICAGO ROCKS! Geology in the City (ESCI 109). Dr. Sanders

Using the street maps and topographic maps available in the classroom, locate each study area and answer the questions about that area.

1) BLUE ISLAND (Blue Islandquadrangle)

a) Why is it called Blue ISLAND? / b) Four geologic formations occur in Blue Island. List their formal names (from the Willman map) and tell what type(s) of sediment can be found in each:
Formation name:
Sediment type: / Formation name:
Sediment type:
Formation name:
Sediment type: / Formation name:
Sediment type:

2)ROSEHILL NEIGHBORHOOD (Chicago Loopquadrangle):

a) Why is it called Rose HILL? What is the landform? / b) What geologic formation occurs there to create the landform? (Formal name, from the Willman Map.)
c) What is the predominant geologic material occurring in the landform, and how was the geologic material deposited? (Check one or more below.)
___ Clay deposited in a lake (lacustrine) / ___ Outwash sand and gravel
___ Till (clay mixed with other sediments, deposited directly by melting ice in a moraine) / ___ Wind-blown sand
___ Sand in beaches, sand bars, and sand spits

3) HIGHLAND PARK (Highland Parkquadrangle)

a) What geologic formation occurs in the area of Highland Park? (Formal name, from the Willman Map.) / b) Why is it called HIGH-land Park?

4) RIDGE ROAD(Chicago Loop and Evanstonquadrangles)

a) What geologic material occurs along Ridge Road, material that would give it its name?
___ Clay deposited in a lake (lacustrine) / ___ Outwash sand and gravel
___ Till (clay mixed with other sediments, deposited directly by melting ice in a moraine) / ___ Wind-blown sand
___ Sand in beaches, sand bars, and sand spits
b) Why is it called RIDGE Road?

5) RIDGELAND AVENUE (Berwyn, Oak Park; in Chicago it is called Narragansett Ave.) (Berwyn, River Forest, and Park Ridgequadrangles)

a) What symbol is used on the Willman Map along this street? (Draw it below.) What does the symbol mean? / b) What geologic material occurs along Ridgeland Avenue?
___ Clay deposited in a lake (lacustrine)
___ Till (clay mixed with other sediments, deposited directly by melting ice in a moraine)
___ Outwash sand and gravel
___ Wind-blown sand
___ Sand in beaches, sand bars, and sand spits
c) Why is it called RIDGE-land Avenue? / d) Why are there so many cemeteries along Ridgeland/Narragansett Avenue?

6) PARK RIDGE, Illinois (Park Ridgequadrangle)

a) What geologic formation occurs in the Park Ridge area? (Give the formal name from the Willman Map.) / b) What geologic material occurs in the Park Ridge area?
___ Clay deposited in a lake (lacustrine)
___ Till (clay mixed with other sediments, deposited directly by melting ice in a moraine)
___ Outwash sand and gravel
___ Wind-blown sand
___ Sand in beaches, sand bars, and sand spits
c) Why is it called Park RIDGE? / d) The “ridge” of Park Ridge is a watershed divide. What two watersheds does it divide?

7) STONY ISLAND (Lake Calumetquadrangle)

a) In the space below, draw the shape of the Stony Island as it appears on a topographic map. / b) What geologic material occurs in Stony Island?
c) Why is it called “Stony”? Why is it called “Island”?

8) STONY CREEK (Blue Islandquadrangle)

a) What geologic material does Stony Creek flow through? (Give the formal name from the Willman Map.) / b) What geologic material is exposed in the area of Stony Creek? (This one will take some thought and careful reading.)
c) Why is it called Stony Creek?

9) PORTAGE PARK(River Forest quadrangle)

a) The name “portage” is a French word, and it refers to something people do when they are canoeing. What is it? / b) Why would people need to portage their canoes? What does it say about the land elevation in the area?
c) In this particular area, what are the two watersheds this divide separates? / d) Draw a profile view (side view) of this portage, labeling the one watershed to the west, and the other to the east.