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geological formation

body of rock identified by lithic characteristics and stratigraphic position; it is usually but not necessarily tabular and is mappable at the Earth's surface or traceable in the subsurface. Smaller than a subgroup
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Summary

geological formation ranks in the top 2% of general entities by monthly Wikipedia readership (1,087 views/month).[1]

Key Facts

  • Subclass of: lithostratigraphic unit[2]
  • Part of: subgroup[3]
  • Commons category: Geologic formations[4]
  • Said to be the same as: formation[5]
  • Has part(s): member[6]
  • Topic's main category: Category:Geologic formations[7]
  • Main subject: stratigraphy[8]
  • Described by source: Meyers Konversations-Lexikon, 4th edition (1885–1890)[9]
  • Equivalent class: https://w3id.org/gso/1.0/geologicunit/Formation[10]
  • Different from: lithological assemblage[11], rock formation[12]
  • On focus list of Wikimedia project: Wikipedia:Vital articles/Level/4[13]

Why It Matters

geological formation has Wikipedia articles in 26 language editions, a strong signal of global cultural recognition.[14] It is known by 66 alternative names across languages and contexts.[15]

Related Entities

stratigraphy

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . Q141222183. wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . wikidata.org.
  12. [13] ↑ . wikidata.org.

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [14] ↑ . Wikidata sitelinks. wikidata.org.
  3. [15] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). geological formation. Retrieved October 17, 2026, from https://4ort.xyz/entity/geological-formation
MLA “geological formation.” 4ort.xyz Knowledge Graph, 4ort.xyz, 17 Oct. 2026, https://4ort.xyz/entity/geological-formation.
BibTeX @misc{4ortxyz_geological-formation_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{geological formation}}, year = {2026}, url = {https://4ort.xyz/entity/geological-formation}, note = {Accessed: 2026-10-17}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): geological formation — https://4ort.xyz/entity/geological-formation (retrieved 2026-10-17)

Canonical URL: https://4ort.xyz/entity/geological-formation · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 13h ago · Ksn.kenny · 2026-10-17 view diff on Wikidata ↗
    Gnd id → 4155003-1
    Claims rich → —
    "/* wbsetclaim-create:2||1 */ Gnd id: 4155003-1"
  2. 1d ago · KrBot bot · 2026-10-16 view diff on Wikidata ↗
    Google knowledge graph id → —
    Claims rich → —
    "/* wbremoveclaims-remove:1| */ Google knowledge graph id: /m/03k5cs, перемещено в / moved to Freebase id, см. / see [[Template:Autofix|autofix]] на / on [[Property talk:P2671]]"
  3. 6d ago · A.pavliashvili · 2026-10-11 view diff on Wikidata ↗
    Wikipedia languages → ['ar', 'ast', 'ca', 'cs', 'da', 'de', 'el', 'en', 'eo', 'es', 'et', 'eu', 'fa',
    Google knowledge graph id → —
    Claims rich → —
    "/* wbsetclaim-create:2||1 */ Google knowledge graph id: /m/03k5cs"
  4. 5w ago · Susmuffin · 2026-09-07 view diff on Wikidata ↗
    Harper's tag → formations-geology
    "/* wbsetclaim-create:1||1 */ Harper's tag: formations-geology, Matched to [[:toollabs:mix-n-match/#/entry/289931061|formations geology (#289931061)]] in [[:toollabs:mix-n-match/#/catalog/7915|H"
  5. 6w ago · عُثمان · 2026-08-31 view diff on Wikidata ↗
    Equivalent class → https://w3id.org/gso/1.0/geologicunit/Formation
    "/* wbsetclaim-create:2||1 */ Equivalent class: https://w3id.org/gso/1.0/geologicunit/Formation"
  6. 21w ago · Twofivesixbot bot · 2026-05-20 view diff on Wikidata ↗
    Part of → —
    Said to be the same as → formation
    Has parts → —
    On focus list of wikimedia project → Wikipedia:Vital articles/Level/4
    + 9 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-qualifiers:1||1|5 */ Yso id: 37997, mv to monolingual text names on YSO statements"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.