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geologic time scale

a system of chronological dating that classifies geological strata (stratigraphy) in time
Event periodization Q43521
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Summary

geologic time scale is a periodization[1]. It ranks in the top 8% of periodization entities by monthly Wikipedia readership (21,613 views/month).[2]

Key Facts

  • Instance of: chronostratigraphic classification scheme[3]
  • Subclass of: technical standard[4], chronological dating[5], geologic time interval[6]
  • Commons category: Geologic time scale[7]
  • Said to be the same as: geological time[8]
  • Has part(s): geochronological unit[9]
  • Official website: https://stratigraphy.org/ICSchart/ChronostratChart2020-03.pdf[10], https://stratigraphy.org/ICSchart/ChronostratChart2023-09.pdf[11], https://stratigraphy.org/chart[12]
  • Topic's main category: Category:Geologic time scales[13]
  • Described by source: Great Soviet Encyclopedia (1926–1947)[14]
  • Topic has template: Template:Geologic time scale[15], Template:Geology to Paleobiology[16], Q100869473[17]
  • Standards body: International Union of Geological Sciences[18], International Commission on Stratigraphy[19]
  • Equivalent class: https://w3id.org/gso/1.0/geology/Geologic_Time_Scale[20]
  • Studied by: chronostratigraphy[21], geochronology[22], biostratigraphy[23]
  • On focus list of Wikimedia project: Wikipedia:Vital articles/Level/4[24]
  • P14541: 2WjH1N[25]

Why It Matters

geologic time scale has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[26] It is known by 121 alternative names across languages and contexts.[27]

Related Entities

chronostratigraphy geochronology geology lunar geologic timescale

References

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

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.
  16. [18] ↑ . wikidata.org.
  17. [19] ↑ . wikidata.org.
  18. [20] ↑ . wikidata.org.
  19. [21] ↑ . wikidata.org.
  20. [22] ↑ . wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . wikidata.org.
  23. [25] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [26] ↑ . Wikidata sitelinks. wikidata.org.
  3. [27] ↑ . 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). geologic time scale. Retrieved October 10, 2026, from https://4ort.xyz/entity/geologic-time-scale
MLA “geologic time scale.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Oct. 2026, https://4ort.xyz/entity/geologic-time-scale.
BibTeX @misc{4ortxyz_geologic-time-scale_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{geologic time scale}}, year = {2026}, url = {https://4ort.xyz/entity/geologic-time-scale}, note = {Accessed: 2026-10-10}}
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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. 6w ago · Infovarius · 2026-08-31 view diff on Wikidata ↗
    Equivalent class → https://w3id.org/gso/1.0/geology/Geologic_Time_Scale
    Instance of → periodization, chronostratigraphic classification scheme
    "/* wbremoveclaims-remove:1| */ Instance of: time standard"
  2. 6w ago · عُثمان · 2026-08-30 view diff on Wikidata ↗
    Subclass of → technical standard, chronological dating, geologic time interval
    "/* wbsetclaim-update:2||1 */ Subclass of: technical standard"
  3. 13w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → 2WjH1N
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  4. 20w ago · Twofivesixbot bot · 2026-05-23 view diff on Wikidata ↗
    Has part(s) → geochronological unit
    Subclass of → —
    Has parts → —
    Website → —
    + 12 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-qualifiers:1||1|2 */ National library of israel j9u id: 987007562979405171, mv to monolingual text names on J9U statements"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.