avstrat (version 0.1.1)

example_data_indiv: Example stratigraphic data from individual tables

Description

A dataset created by loading example inputs with load_stratdata_indiv(). This demonstrates the structure of stratigraphic data when stations, sections, layers, and samples are provided as separate tables and then merged. It shares many column definitions with example_data_strat but contains a reduced set of fields.

Usage

example_data_indiv

Format

example_data_indiv

A data frame with 244 rows and 23 columns:

stratsection_name

Character. Name/identifier of the stratigraphic section.

stratlayer_name

Character. Name/identifier of the stratigraphic layer.

stratlayer_desc

Character. Free‑text description of the layer.

stratlayer_order

Integer. Order of the layer within the section.

thickness_units

Character. Units for thickness (e.g., "millimeters", "centimeters", "meters").

thickness_typical

Numeric. Typical thickness of the layer.

thickness_min

Numeric. Minimum thickness of the layer.

thickness_max

Numeric. Maximum thickness of the layer.

depth_units

Character. Units for depth (see thickness_units).

depth_top

Numeric. Absolute depth to the top of the layer.

depth_bottom

Numeric. Absolute depth to the bottom of the layer.

layer_type

Character/Factor. Lithology or depositional type of the layer (e.g., "tephra fall", "soil").

stratlayer_color

Character. Color description.

grainsize_top

Numeric/Character. Grain size at the top of the layer.

grainsize_bottom

Numeric/Character. Grain size at the bottom of the layer.

volcano_name

Character. Source volcano name. If multiple, separated by "|".

station_id

Character. Station identifier (links back to station metadata).

stratmeasuremethod

Character. Method used for stratigraphic measurement.

stratlayer_order_start_at_top

Logical. Whether ordering starts at the top.

Latdd

Numeric. Latitude in decimal degrees.

Longdd

Numeric. Longitude in decimal degrees.

stratlayer_sample

Character. Collapsed sample identifiers per layer, separated by "|".

SampleID

List. Nested list column of sample IDs per layer.

See Also

example_data_strat for a more complete dataset including additional descriptive fields.