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Toarcian: Stratigraphic definitions & Overview

The Toarcian is, in the ICS' geologic timescale, an age and stage in the Early or Lower Jurassic. It spans the time between 184.2 Ma (million years ago) and 174.7 ±0.8 Ma. It follows the Pliensbachian and is followed by the Aalenian.

Language: English [EN]
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Toarcian topic overview

The analysis highlights Stratigraphic definitions and Overview as prominent areas in the source structure around Toarcian.

Related topics
36
Source areas
2
Connected nodes
40
Extracted relationships
29
Concept neighborhoods
15
Bridge connections
40

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Stratigraphic definitions · 26 topics
Overview · 10 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Celestial body
Earth
Chronological unit
Age
Lower boundary definition
Peniche, Portugal
Lower GSSP ratified
2014
Name formality
Formal
Regional usage
Global (ICS)

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Stratigraphic definitions

Sources

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Toarcian connects Entity context

The extracted context around Toarcian shows recurring relationship patterns in the source. For example, Toarcian → Alcide, France, French, In Europe, Lias, Loire Valley, Orbigny, Saumur, The, The Toarcian, Thouars Another extracted example is Toarcian → GeoWhen Database, ICSStratigraphic, Lower Jurassic, Norges Network, ToarcianLower Jurassic. Use these groups to spot repeated connection types before inspecting the individual relationships.

Toarcian

Top relations

related to Stratigraphic definitions · 11
Toarcian → Alcide, France, French, In Europe, Lias, Loire Valley, Orbigny, Saumur, The, The Toarcian, Thouars
related to External links · 5
Toarcian → GeoWhen Database, ICSStratigraphic, Lower Jurassic, Norges Network, ToarcianLower Jurassic
Celestial body · 1
Toarcian → Earth
Chronological unit · 1
Toarcian → Age
Lower boundary definition · 1
Toarcian → Peniche, Portugal
Lower boundary GSSP · 1
Toarcian → FAD of the Ammonite D. (E.) simplex .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-par…
Lower GSSP ratified · 1
Toarcian → 2014
Name formality · 1
Toarcian → Formal
Regional usage · 1
Toarcian → Global (ICS)
Stratigraphic unit · 1
Toarcian → Stage

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

age ammonite jurassic years ago global ics pliensbachian stage lower event fad stratigraphic time gssp aalenian mw-parser-output scale early ma

Toarcian relationships Subject–Predicate–Object triples

TTTA extracted 29 structured relationships around Toarcian. Examples in this analysis include Toarcian → Celestial body → Earth and Toarcian → Chronological unit → Age. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
ToarcianCelestial bodyEarth1.00infobox
ToarcianChronological unitAge1.00infobox
ToarcianLower boundary definitionPeniche, Portugal1.00infobox
ToarcianLower boundary GSSPFAD of the Ammonite D. (E.) simplex .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-par…1.00infobox
ToarcianLower GSSP ratified20141.00infobox
ToarcianName formalityFormal1.00infobox
ToarcianRegional usageGlobal (ICS)1.00infobox
ToarcianStratigraphic unitStage1.00infobox
ToarcianTime scale(s) usedICS Time Scale1.00infobox
ToarcianTime span formalityFormal1.00infobox
ToarcianUpper boundary definitionFAD of the Ammonites Leioceras opalinum and Leioceras lineatum1.00infobox
ToarcianUpper boundary GSSPFuentelsaz, Spain 41°10′15″N 1°50′00″W / 41.1708°N 1.8333°W / 41.1708; -1.83331.00infobox
ToarcianUpper GSSP ratified20001.00infobox

Related concept clusters Concept neighborhoods

The concept neighborhoods around Toarcian bring nearby vocabulary together. In this analysis, examples include Ammonite, Years and Fad. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • early or lower jurassic
    • Timescale
    • Ics
    • Jurassic
    • Toarcian
    • Lower
    • Stage
    • Stratigraphic
    • Aalenian
    • Ago
    • Fad
    • Geologic
    • Years
  • ma (million years ago)
    • Ago
    • Million
    • Years
    • Ics
    • Earth
    • Ma
    • Mw-parser-output
    • Scale
    • Time
    • Jurassic
    • Stratigraphic
    • Fad
  • age
    • Stage
    • Toarcian
    • Geologic
    • Lower
    • Mw-parser-output
    • Scale
    • Time
    • Ammonite
    • Global
    • Fad
    • Early
    • Earth
  • stage
    • Lower
    • Ammonite
    • Fad
    • Toarcian
    • Early
    • Earth
    • Gssp
    • Timescale
    • Mw-parser-output
    • Scale
    • Time
    • Ago
  • ics
    • Jurassic
    • Stratigraphic
    • Years
    • Lower
    • Mw-parser-output
    • Scale
    • Toarcian
    • Fad
    • Gssp
    • Ma
    • Million
    • Timescale
  • ammonite
    • Mw-parser-output
    • Scale
    • Time
    • Toarcian
    • Stage
    • Stratigraphic
    • Fad
    • Earth
    • Geologic
    • Gssp
    • Lower
    • Global
  • geologic timescale
    • Lower
    • Jurassic
    • Age
    • Early
    • Timescale
    • Toarcian
    • Mw-parser-output
    • Scale
    • Time
    • Ammonite
    • Ics
    • Stage
  • toarcian oceanic anoxic event
    • Pliensbachian
    • Global
    • Ammonite
    • Represented
    • Toarcian
    • Years
    • Scale
    • Ics
    • Jurassic
    • Fad
    • Gssp

Connections between topic areas Semantic bridges

For Toarcian, one of the stronger structural bridges in this analysis connects Toarcian with Stratigraphic definitions. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
ToarcianStratigraphic definitions · splits 14 ⟂ 27
ToarcianOverview · splits 30 ⟂ 11

Map overview Semantic statistics

Toarcian

Nodes41
Edges40
Triples29
Avg. degree1.95
Density0.04878
Components1

Source & methodology

TTTA analyzes the structure around Toarcian to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Stratigraphic definitions & Overview, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Toarcian · EN edition · Analysis: TopicsToTalkAbout

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