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.