English Wikipedia - The Free Encycl...
Download this dictionary
System (stratigraphy)
A
system
in
stratigraphy
is a unit of
rock layers
that were laid down together within the same corresponding
geological period
. The associated period is a
chronological
time
unit
, a part of the
geological time scale
, while the system is a unit of
chronostratigraphy
. Systems are unrelated to
lithostratigraphy
, which subdivides rock layers on their
lithology
. Systems are subdivisions of
erathems
and are themselves divided into
series
and
stages
.
See more at Wikipedia.org...
© This article uses material from
Wikipedia
®
and is licensed under the
GNU Free Documentation License
and under the
Creative Commons Attribution-ShareAlike License