DENDROCHRONOLOGY
EXTINCTIONS
APPEARANCE OF SPECIES
HYDROSPHERE
GEOSPHERE
RADIOMETRIC
DATING
ICE CORES
inform
about
experiences
FOSSILS
applying methods
such as
can
be
DATING
ROCKS
RELATIVE
according to
STRATIGRAPHIC
CORRELATION
CROSS-CUTTING
RELATIONSHIPS
SUPERPOSITION OF
STRATA
affect the
inform
about
are
preserved
in
occurred
during
GEOLOGIC TIME
can
be
is divided
into
spans more
than
EONS
4,500 Ma
GRADUAL
CATASTROPHIC
GEOLOGICAL
PROCESSES
ATMOSPHERE
BIOSPHERE
CHANGES
provides information
about the age of
ABSOLUTE
STRATIGRAPHIC
PRINCIPLES
EARTH
are divided
into
ERAS
are divided
into
PERIODS