stratigraphy : concepts and lithostrat Flashcards
the result therefore of this physical inquiry is that we find no vestige of a beginning, no prospect of an end
- Hutton
sicar point
can be considered as the relationship between rocks and time
stratigraphy
concerned with the observation, description and interpretation direct and tangible eidence in rocks to determine the history of earth
stratigrapher
stratigraphy is intimately combined with _________
sedimentology
steno’s law and principle
- law of superposition
- law of original horizontality
- principle of original lateral continuity
oldest strata will be at the bottom and the youngest will be on top
law of superposition
layers of sediment are originally deposited horizontally
law of original horizontality
horizontal layers of rock are continuous
princniple of original lateral continuity
lithostratigraphic correlation
- recognition of distinct bodies of rock and their spatial relationships with each other
- the definintion of lithostratigraphic units and the correlation of lithostratigraphic units with each other
- the correlation of rock units with a chronostratigraphic unit standard
forms the basis for making geologic maps and by correlating lithostratigraphic units
lithostratigraphy
is it possible to reconstruct the changing paleogeography of an area through time?
yes
a body of rock or strata that can be distinguished and defined by its lithological characteristics and its stratigraphic position relative to other bodies
lithostratigraphic units
geological time units expressed in a time frame
geochronology
stratigraphic material unit of a rock
chronostratigraphy
geochronologic and chronosratigraphic unit nomenclature
geochronologic
- eon
- era
- period
- epoch
- age
chronostratigraphic
- eonothem
- erathem
- system
- series
- stage
longest period of time within the history of earth
eon
three times division
era
basic unit of geologic time
period
commonly used when referring to earth’s history
period
used for rocks deposited in a particular period
system
main divisions of periods
epoch
chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms lower , Middle Middle Middleand and Upper Upper instead of instead of instead of instead of instead of instead of EarlyEarlyEarly Early, Middle Middle Middleand and and Late .
series
smallest commonly used division of geological time
age
typically a few million years in duration
stage
