A function to retrieve definitions for various geological structures within the Macrostrat database.
Usage
def_structures(
structure = NULL,
structure_class = NULL,
structure_type = NULL,
structure_id = NULL
)Arguments
- structure
character. The name of a geological structure (e.g., "syncline") to return a definition for.- structure_class
character. The name of the geological structure class (e.g., "sedimentology") to return a definition for.- structure_type
character. The name of the geological structure type (e.g., "fault") to return a definition for.- structure_id
integer. The unique idenfication number(s) of geological structures(s) to return a definition for.
Value
A data.frame containing the following columns:
structure_id: The unique identification number of the structure.name: The name of the structure.structure_type: Structure type, less inclusive than class.group: Structure group, less inclusive than type.class: Structure class, more inclusive than type.
See also
Geologic features and attributes:
def_econs(),
def_environments(),
def_grain_sizes(),
def_lithologies(),
def_lithology_att(),
def_measurements(),
def_minerals()
Examples
# \donttest{
# Get all structure definitions
ex1 <- def_structures()
# Get subset of structure definitions
ex2 <- def_structures(structure_id = c(1, 3))
ex3 <- def_structures(structure_class = "igneous")
# }