Laboratory Manual for Introductory Geology 4e

EXERCISE 10.18
Making a Geologic Map from Outcrop Data
Name:
Course:
Section:
Date:
A geologist has just finished mapping an area of a few square kilometers. She has drawn the approximate shapes of
outcrops, has plotted strike and dip measurements, and has located contacts where they were exposed. Complete the
map below by extrapolating contacts across the covered areas and by adding appropriate symbols for folds, if they are
present. When you have completed the map, describe the basic structure of the map area in words using the space
provided here.
Structural Description:
An outcrop map for structural interpretation.
N
EXPLANATION
68
18
32
40
Edge of an outcrop
20 Strike and dip of bedding
Basalt
Granite
61
32
23
Kendall Formation
Glade Formation
Ostia Formation
Jared Formation
22
54
Megan Formation
0
km
1
10.6 READING REAL GEOLOGIC MAPS
271