def_strat_names {rmacrostrat} | R Documentation |
A function to retrieve the definitions for one or more stratigraphic names in the Macrostrat database. By default, all stratigraphic name definitions are returned.
def_strat_names(
strat_name = NULL,
interval_name = NULL,
rank = NULL,
concept_id = NULL,
ref_id = NULL,
strat_name_id = NULL,
rule = NULL
)
strat_name |
|
interval_name |
|
rank |
|
concept_id |
|
ref_id |
|
strat_name_id |
|
rule |
|
A data.frame
containing the following columns:
strat_name
: The short-form stratigraphic name (e.g. "Hell
Creek").
strat_name_long
: The long-form stratigraphic name, including
the lithostratigraphic rank of the stratigraphic name (e.g., "Hell Creek
Formation").
rank
: The lithostratigraphic rank of the stratigraphic name
(e.g., "Formation"), in short form (e.g., "Fm").
strat_name_id
: The unique identification number of the
stratigraphic name.
concept_id
: The unique identification number of the associated
stratigraphic name concept, which groups variant strat_names
for the
same geologic entity (see def_strat_name_concepts()
).
bed
: The stratigraphic name of the bed associated with the
specified stratigraphic name.
bed_id
: The unique identification number (strat_name_id) of
the bed associated with the specified stratigraphic name associated with
the specified stratigraphic name.
mbr
: The stratigraphic name of the member associated with the
specified stratigraphic name.
mbr_id
: The unique identification number (strat_name_id) of
the member associated with the specified stratigraphic name.
fm
: The stratigraphic name of the formation associated with
the specified stratigraphic name.
fm_id
: The unique identification number (strat_name_id) of
the formation associated with the specified stratigraphic name.
subgp
: The stratigraphic name of the subgroup associated with
the specified stratigraphic name.
subgp_id
: The unique identification number (strat_name_id) of
the subgroup associated with the specified stratigraphic name.
gp
: The stratigraphic name of the group associated with the
specified stratigraphic name.
gp_id
: The unique identification number (strat_name_id) of
the group associated with the specified stratigraphic name.
sgp
: The stratigraphic name of the supergroup associated with
the specified stratigraphic name.
sgp_id
: The unique identification number (strat_name_id) of
the supergroup associated with the specified stratigraphic name.
b_age
: The bottom age (maximum age) associated with the
stratigraphic name, in millions of years before present.
t_age
: The top age (minimum age) associated with the
stratigraphic name, in millions of years before present.
b_period
: The name of the oldest geologic time period
associated with the stratigraphic name (see def_intervals()
).
t_period
:The name of the youngest geologic time period
associated with the stratigraphic name (see def_intervals()
).
c_interval
: The name of the central interval associated with
the stratigraphic name (see def_intervals()
).
t_units
: The total number of Macrostrat units that are
associated with the stratigraphic name.
ref_id
: The unique identification number of the reference from
which the stratigraphic name was sourced (see def_references()
).
Christopher D. Dean
Bethany Allen
Stratigraphic names:
def_strat_name_concepts()
# Return a sample of stratigraphic names
ex1 <- def_strat_names()
# Return all stratigraphic names associated with a particular stratigraphic
# name
ex2 <- def_strat_names(strat_name = "Hell Creek")
# Return all stratigraphic names that intersect with a chosen time interval
ex3 <- def_strat_names(interval_name = "Campanian")