geological formation
Let an agent explain geological formations and stratigraphic units, identify and describe specific formations with survey sources, and relate formations to resources, hazards and heritage.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain geological formations and stratigraphic units, identify and describe specific formations with survey sources, and relate formations to resources, hazards and heritage.
In geology, a body of rock with distinctive lithology that is mappable at the surface or traceable in the subsurface, the fundamental unit of lithostratigraphy, named for a type locality and grouped into members and groups; formations include sedimentary sequences, salt formations and conglomerates such as Nagelfluh, and the term is also used loosely for landforms and for hydrogeological units such as aquitards.
What it is for: Geology, resources and land use.
It can be explain lithostratigraphic units; describe a specific formation; relate formations to resources and hazards; separate loose senses.
Distinguishing features
Lithostratigraphic unit
Named for a type locality
Mappable
Hierarchically grouped
What it looks like
Rock bodies exposed in outcrops, cliffs and quarries or shown on geological maps.
How it is recognised
Distinctive lithology
Mappable unit
A landform is a surface shape, not a rock unit
Related models
is a kind of - category
includes - rock type
includes - rock type
is related to - groundwater units
In practice
Families and kinds
sedimentary formations
volcanic and igneous formations
salt and evaporite formations
conglomerate formations such as Nagelfluh
hydrogeological units such as aquitards
Standards and regulation
International Stratigraphic Guide
National stratigraphic lexicons
Geological survey mapping standards
Failure modes and hazards
Confusing formations with landforms
Outdated stratigraphic names
Ground hazards such as subsidence in salt formations
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Define What a formation is.
Stratigraphy.
Unit
Lithostratigraphic units.
Unit
Units.
- How is a formation defined, and how does it relate to members and groups? definition
- How is it named and formally established? provenance
Senses
Loose senses.
Senses
Senses.
- Is the term used for a rock unit, a landform or a hydrogeological unit here? boundary
- Which entry fits? action
Describe A specific formation.
Survey sources.
Facts
Lithology and age.
Facts
Facts.
- What are the lithology, age, thickness and extent of this formation, according to the geological survey? provenance
- Where is its type locality? provenance
Fossils
Fossils and environment.
Fossils
Fossils.
- Which fossils does the formation contain, and what environment does it record? provenance
- Where can it be seen? provenance
Use Resources and hazards.
Practical geology.
Resources
Resources.
Resources
Resources.
- Which resources such as water, hydrocarbons, minerals or building stone does this formation hold? provenance
- How is it used in engineering? provenance
Hazards
Ground hazards.
Hazards
Hazards.
- Which ground hazards, such as subsidence, swelling or landslides, are associated with this formation? provenance
- Which site investigations are needed? provenance
Learn Maps and teaching.
Resources.
Maps
Geological maps.
Maps
Maps.
- Where can geological maps and lexicon entries for this formation be found? provenance
- How are formations shown on maps? definition
Teach
Teaching.
Teach
Teaching.
- How can stratigraphy be taught with field examples? action
- Which misconceptions arise? provenance
What the second pass must settle
- Should each formation be a separate entry?
- How should stratigraphic lexicons be linked?
- How should geological maps be linked?