Levels of rock quiz Flashcards
STRATA
sedimentary rock in layers
PRINCIPLE OF ORIGINAL HORIZONTALITY
SEDIMENTARY ROCS ARE FORMED IN HORIZONTAL LAYERS
THE PRINCIPLE OF UNIFORMITARIANISM
GEOLOGI PROCESSES IN ACTION ON EARTH TODAY ARE STILL THE SAME OF THOSE IN THE PAST
RELATIVE DATING
DATING OBJECTS IN THEIR RELATION TO ONE THING OR ANOTHER
ONE RULE OF RELATIVE DATING
NO SPECIFIC AGES ARE GIVEN
LAW OF SUPERPOSITION
IN LAYERED ROCKS THE TOP IAS YOUNGEST AND BOTTOM IS OLDEST
law of cross cutting relationship
ANY GEOLOGIC FEATURE THAT CUTS INTO EXISTING ROCK IS YOUNGER THAN THE ALREADY EXISTING ROCK
FAULT
A BREAK THROUGH THE STRATA
FOLDING
A BEND OR WAVE THROUGH THE STRATA
CONTACT METAMORPHISM
ROCKS THAT ARE IN CLOSE CONTACT WITH MAGMA WILL METAMORPH INTO A NEW ROCK.
WHAT 2 THINGS DO CONTACT ETAMORPHISISM?
SILLS AND DIKES
LAW OF EXTRUSIONS
LAVA FLOWS FOLLOW THE PRINCIPLE OF SUPERPOSITION
LAW OF INTRUSIONS
INTRUSIONS R YOUNGER THAN THE ROCKS THEY INCLUDE
WHAT R AGENTS OF INTRUSION?
DIKES, SILLS, AND BATHOLITHS
DIKE
YOUNGER THAN LAYER IT CUTS ACROSS (LOOKS LIKE RECTANGLEWITH HAIR)