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Unit 1
BEDROCK GEOLOGY
• The geologic history of the Earth is determined by Earth
Science principles such as ____________________________________________________________________________________________________
_
BIG IDEA• _____________________can be
estimated by observing ________ sequences and understanding how forces inside the Earth affect those sequences. Scientific evidence implies that some rock near the earth's surface is several billion years old.
• The formation, weathering, sedimentation, and reformation of rock constitute a continuing ”____________" in which the _________ amount of material stays the same as its forms change.
KEY CONCEPTS
___________________show the surface geology of an area, region
or a larger land area. They are constructed using a variety of
methods and contain generalizations.
GEOLOGIC MAPS
There are _______ types of rocks: ______________, ___________,
and ______________and the rock cycle explains the relationships that can occur between them.
ROCK TYPES
SEDIMENTARY ROCKS
IGNEOUS ROCKS Perpendicularly-fused metamorphosed sedimentary layers
METAMORPHIC ROCKS
INTERPRETATION PRINCIPLES
• Geologists interpret the rock record using four principles:
____________, ___________, ____________________and
__________________ relationships.
horizontality
original lateral continuity
crosscuttingsuperposition
FORCES AND FAULTS• Forces inside the Earth can create
_________________over time. Different types of faults (reverse,
normal and strike-slip) are formed by different forces (compression,
tension or shearing).
folds
faults
LAND USE AND GEOLOGY•Different regions in the
United States have different land uses based
on the underlying geology.