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Rhaetian: Stratigraphic definitions, Duration & Overview

The Rhaetian is the latest age of the Triassic Period (in geochronology) or the uppermost stage of the Triassic System (in chronostratigraphy). It was preceded by the Norian and succeeded by the Hettangian (the lowermost stage or earliest age of the Jurassic). The base of the Rhaetian lacks a formal GSSP, though candidate sections include Steinbergkogel…

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Rhaetian topic overview

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

Related topics
106
Source areas
5
Connected nodes
113
Extracted relationships
204
Concept neighborhoods
29
Bridge connections
113

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 · 43 topics
Overview · 28 topics
Duration · 24 topics
Rhaetian–Hettangian boundary · 6 topics
Notable formations · 5 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
Not formally defined
Lower boundary definition candidates
FAD of the Conodont Misikella posthernsteini · Near FAD of the Ammonite genus Cochloceras · Near FAD of the Conodont Epigondolella mosheri · Near FAD of the Radiolarian Proparvicingula moniliformis
Lower boundary GSSP candidate section(s)
Steinbergkogel, Austria · Pignola-Abriola, Italy · Turkey · British Columbia, Canada
Name formality
Formal

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

Rhaetian–Hettangian boundary

Duration

Notable formations

Literature

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 Rhaetian connects Entity context

The extracted context around Rhaetian shows recurring relationship patterns in the source. For example, Rhaetian → Betraccium, BIT1n, CAMP, E17n, E17r, E19r, E20n, E23r, E23r-equivalent, England, Europe, Gallet, Hettangian, Hettangian Italcementi, Hounslow, However, Ikeda, In, In Brumano, It Another extracted example is Rhaetian → Aramachay Formation, Black Bear Ridge, British Columbia, E20, E20r, Golding, GSSP, Ma, Magnetostratigraphy, Maron, Misikella, Monotis, MPA5r, Newark, Newark Basin, Newark's E20, Norian, Pb, Peru, Pignola-Abriola. Use these groups to spot repeated connection types before inspecting the individual relationships.

Rhaetian

Top relations

related to Norian–Rhaetian boundary: "long Rhaetian" hypotheses · 43
Rhaetian → Betraccium, BIT1n, CAMP, E17n, E17r, E19r, E20n, E23r, E23r-equivalent, England, Europe, Gallet, Hettangian, Hettangian Italcementi, Hounslow, However, Ikeda, In, In Brumano, It
related to Norian–Rhaetian boundary: Recent compromises · 28
Rhaetian → Aramachay Formation, Black Bear Ridge, British Columbia, E20, E20r, Golding, GSSP, Ma, Magnetostratigraphy, Maron, Misikella, Monotis, MPA5r, Newark, Newark Basin, Newark's E20, Norian, Pb, Peru, Pignola-Abriola
related to Rhaetian–Hettangian boundary · 22
Rhaetian → Blackburn, CA-ID-TIMS, Choristoceras, Hettangian, Hettangian Stage, ICS, In, Jurassic, Jurassic System, Lower Jurassic Series, Ma, Peru, Psiloceras, Pucará Basin, Rhabdoceras, Schoene, Tethyan, The, They, This
related to GSSP candidates · 20
Rhaetian → Austrian Steinbergkogel, Cherty, Formation, GSSP, Hallstatt, It, Italy, Krystyn, Metasibirites, Misikella, Monotis, Norian, Paracochloceras, Pignola-Abriola, Rhaetian Calcari, Rigo, Sagenites, Selce, The Rhaetian, This
related to Index fossils and biotic events · 20
Rhaetian → Around, Cochloceras, Epigondolella, Extinctions, ICS, In, Metasibirites, Misikella, Mockina, Monotis, Norian, Northern, Paracochloceras, Proparvicingula, Sagenites, Tethyan, Tethys, Tethys Ocean, The Norian, Triassic
related to Norian–Rhaetian boundary: "short Rhaetian" hypotheses · 19
Rhaetian → Although, Carnian, Defining, E21n, E23n, Epigondolella, Gallet, Misikella, Newark, Norian, Oyuklu, Pizzo Mondello, PM11n, PM11r, Sicily, The, This, Triassic, Turkey
related to Notable formations · 13
Rhaetian → England, Exter Formation, Formation, France, Germany, Grès, Lower Elliot Formation, Norian, Penarth Group, Saint-Nicolas-de-Port, South Africa, UK, Wales
related to Stratigraphic definitions · 10
Rhaetian → Albert Oppel, Austria, Austrian, Eduard Suess, German, Italy, Rhaetian Alps, Switzerland, The, The Rhaetian
related to External links · 5
Rhaetian → GeoWhen Database, ICSNorges Network, RhaetianUpper Triassic, Stratigraphic, Triassic
Lower boundary definition candidates · 4
Rhaetian → FAD of the Conodont Misikella posthernsteini, Near FAD of the Ammonite genus Cochloceras, Near FAD of the Conodont Epigondolella mosheri, Near FAD of the Radiolarian Proparvicingula moniliformis

Important terminology

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

Important terminology

norian boundary newark et section al triassic ma posthernsteini gssp ics base first time sequence extinction based years pignola-abriola hettangian

Rhaetian relationships Subject–Predicate–Object triples

TTTA extracted 204 structured relationships around Rhaetian. Examples in this analysis include Rhaetian → Celestial body → Earth and Rhaetian → Chronological unit → Age. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
RhaetianCelestial bodyEarth1.00infobox
RhaetianChronological unitAge1.00infobox
RhaetianLower boundary definitionNot formally defined1.00infobox
RhaetianLower boundary definition candidatesFAD of the Conodont Misikella posthernsteini1.00infobox
RhaetianLower boundary definition candidatesNear FAD of the Ammonite genus Cochloceras1.00infobox
RhaetianLower boundary definition candidatesNear FAD of the Conodont Epigondolella mosheri1.00infobox
RhaetianLower boundary definition candidatesNear FAD of the Radiolarian Proparvicingula moniliformis1.00infobox
RhaetianLower boundary GSSP candidate section(s)Steinbergkogel, Austria1.00infobox
RhaetianLower boundary GSSP candidate section(s)Pignola-Abriola, Italy1.00infobox
RhaetianLower boundary GSSP candidate section(s)Turkey1.00infobox
RhaetianLower boundary GSSP candidate section(s)British Columbia, Canada1.00infobox
RhaetianName formalityFormal1.00infobox
RhaetianRegional usageGlobal (ICS)1.00infobox
RhaetianStratigraphic unitStage1.00infobox
RhaetianTime scale(s) usedICS Time Scale1.00infobox
RhaetianTime span formalityFormal1.00infobox
RhaetianUpper boundary definitionFAD of the Ammonite Psiloceras spelae tirolicum1.00infobox
RhaetianUpper boundary GSSPKuhjoch section, Karwendel mountains, Northern Calcareous Alps, Austria .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-p…1.00infobox
RhaetianUpper GSSP ratified20101.00infobox
Rhaetianis alatest age of the Triassic Period0.90text

Related concept clusters Concept neighborhoods

The concept neighborhoods around Rhaetian bring nearby vocabulary together. In this analysis, examples include Norian, Boundary and Al. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Rhaetian
    • Norian
    • Boundary
    • Al
    • Et
    • Ma
    • Section
    • Base
    • Ics
    • Years
    • Triassic
    • Gssp
    • Posthernsteini
  • rhaetian
    • Norian
    • Boundary
    • Al
    • Et
    • Ma
    • Section
    • Base
    • Ics
    • Years
    • Triassic
    • Gssp
    • Posthernsteini
  • age
    • Stage
    • Posthernsteini
    • Triassic
    • Conodont
    • Italy
    • Candidate
    • Jurassic
    • Steinbergkogel
    • Used
    • Basin
    • Hettangian
    • Newark
  • norian
    • Boundary
    • Rhaetian
    • Ma
    • Al
    • Et
    • Section
    • Extinction
    • Sequence
    • Posthernsteini
    • Jurassic
    • Also
    • Magnetozone
  • gssp
    • Candidate
    • Pignola-abriola
    • Steinbergkogel
    • Italy
    • Section
    • Ics
    • Rhaetian
    • Magnetostratigraphy
    • Stage
    • Two
    • Posthernsteini
    • Boundary
  • ics
    • Ma
    • Years
    • Triassic
    • Steinbergkogel
    • Rhaetian
    • Posthernsteini
    • Conodont
    • Boundary
    • Jurassic
    • Used
    • Pignola-abriola
    • Appearance
  • million years ago
    • Ics
    • Jurassic
    • Hettangian
    • Triassic
    • Extinction
    • Boundary
    • Rhaetian
    • Magnetostratigraphy
    • Et
    • Ma
    • Based
    • Oyuklu
  • rhaetian alps
    • Norian
    • Boundary
    • Al
    • Et
    • Ma
    • Section
    • Base
    • Ics
    • Years
    • Triassic
    • Gssp
    • Posthernsteini

Connections between topic areas Semantic bridges

For Rhaetian, one of the stronger structural bridges in this analysis connects Rhaetian 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
RhaetianStratigraphic definitions · splits 70 ⟂ 44
RhaetianOverview · splits 85 ⟂ 29
RhaetianDuration · splits 89 ⟂ 25
RhaetianRhaetian–Hettangian boundary · splits 107 ⟂ 7
RhaetianNotable formations · splits 108 ⟂ 6

Map overview Semantic statistics

Rhaetian

Nodes114
Edges113
Triples204
Avg. degree1.98
Density0.017544
Components1

Source & methodology

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

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

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