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
)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()).
character. The name(s) of the desired stratigraphic
unit(s) to return a definition for.
character. The chronostratigraphic interval name
(e.g., "Campanian") for which to return stratigraphic name definitions.
This returns strat_names with an age declared in Macrostrat, whose age
has any temporal overlap with the desired interval.
character. The formal stratigraphic rank abbreviation of
the desired name(s) (i.e., "SGp", "Gp", "SubGp", "Fm", "Mbr", or "Bed") to
return a definition for.
integer. The unique identification number(s) of the
stratigraphic concept(s) (grouped strat_names which represent the same
entity) to return a definition for.
character. The unique identification number(s) of the
desired reference(s). Only stratigraphic names linked to the specified
ref_id will be returned.
integer. The unique identification number(s) of
the desired stratigraphic name to return a definition for.
character. The hierarchical rule for returning
stratigraphic name definitions (either "all" or "down"). The "all" option
will return the entire stratigraphic name hierarchy (parents and children
of all levels) that the requested name(s) belongs to. The "down" option
will return any direct children of the requested stratigraphic name(s). Can
only be used with strat_name_id.
Christopher D. Dean
Bethany Allen
Stratigraphic names:
def_strat_name_concepts()
# \donttest{
# 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")
# }
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