Page 289 - Laboratory Manual in Physical Geology

BIG IDEAS PRE-LAB VIDEO

Some of Earth’s rocky landscapes expose originally
horizontal layers of rock that have been visibly tilted,
fractured, dislocated, folded, or otherwise deformed into
complex geologic structures. The structures are often too
large to see in one place. To visualize them, geologists
make regional geologic maps and block diagrams with
field data assembled from many sites. The maps and
diagrams are then used to reveal the structures and
determine how they formed.

FOCUS YOUR INQUIRY
THINK
About It | How are deformed rocks identified and classified?
ACTIVITY 10.1 Geologic Structures Inquiry (p. 260 )

|
THINK What kinds of stress relationships cause geologic
About It structures to develop?
ACTIVITY 10.2 Visualizing How Stresses Deform
Rocks (p. 260 )

|
THINK How do geologists map geologic structures on
About It and beneath Earth’s surface?
ACTIVITY 10.3 Map Contacts and Formations (p. 261 )

ACTIVITY 10.4 Determine Attitude of Rock Layers and a
Formation Contact (p. 262 )

10 THINK | How are three-dimensional models used to

visualize geologic structures?
About It
ACTIVITY 10.5 Cardboard Model Analysis and
LA B O RA T O R Y Interpretation (p. 263 )
ACTIVITY 10.6 Block Diagram Analysis and
Interpretation (p. 263 )
Geologic

THINK | How do geologists define, analyze, and interpret
Structures, About It geologic structures using images of landscapes?

ACTIVITY 10.7 Nevada Fault Analysis Using Orthoimages
Maps, and Block (p. 263 )

Diagrams THINK | How do geologists visualize geologic structures
using geologic maps?
About It
ACTIVITY 10.8 Appalachian Mountains Geologic Map
C ONTRIBUTING A UTHORS (p. 263 )
Michael J. Hozik • Stockton College of New Jersey
William R. Parrott, Jr. • Stockton College of New Jersey
Raymond W. Talkington • Stockton College of New Jersey
Satellite image of deformed rock layers, Anti-Atlas Mts., Morocco.
False colors highlight layers of different rock types. (NASA/GSFC/
METI/ERSDAC/JAROS and U.S./Japan ASTER Science Team)
259