Jurassic (~ 200 Ma)

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Representation and status

Index
-
CMYK Color
80 / 0 / 5 / 0
RGB color
R: 52 G: 178 B: 201
Rank
chronostratigraphic Period
Validity
Unit is in Use
Status
valid formal name
SCS note
-
SCS date
-
Comment
-

Nomenclature

German
Jura
French
Jurassique
Italian
Giurassico
English
Jurassic (~ 200 Ma)
Origin of the Name

Named after the Jura Mountains (France, Switzerland).

Historical Variants
Jurassique (Humboldt 1795, Brongniart 1830), Jura
Nomenclatorial Remarks
-

Synonyms

Synonyms
Non-synonyms
Possible confusion

Description

Description
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Geomorphology
-
Thickness
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Components

Lithological content
-
Mineral content
-
Fossil content
-

Hierarchy and succession

Units at roof
    -
Units at floor
Lateral equivalents
Upper boundary
-
Lower boundary
-
Stratigraphic discussion
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Age

Age at top
Tithonian
Note about top
-
Age at base
Hettangian
Note about base
-
Dating method
-

Geography

Geographical extent
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Type area
Type locality
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Type profile
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Reference profiles
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Point of interest
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Paleogeography and tectonic

Paleogeography
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Kind of protolith
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Conditions of formation
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Sequence
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Tectonic Unit (resp. main category)
Time Scale
  • Paratethys
  • Mammal stages
Metamorphism
-
Metamorphic facies
-
Note on metamorphism
-

References

Definition
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Revision
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Important publications
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Material and varia

Applications
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  • Late Jurassic (~ 161 Ma) Show details

    Origin of the Name
    -
    Rank
    chronostratigraphic Epoch
    Status
    valid formal name
    Valid name
    In Short
    -
    Age
    Oxfordian - Tithonian
    Thickness
    -
    Geographical extent
    -
    Type area
    -
    Comment
    -
    • Tithonian (~ 150 Ma) Show details

      Origin of the Name

      Named derived from the Greek mythology: Tithon was the son of Laomedon of Troy, who fell in love with Eos, Greek goddess of the dawn (thus prefiguring the Cretaceous system).

      Rank
      chronostratigraphic Stage
      Status
      valid formal name
      Valid name
      In Short
      Last stage of the Jurassic.
      Age
      Tithonian - Tithonian
      Thickness
      -
      Geographical extent
      -
      Type area
      -
      Comment
      -
    • Kimmeridgian (~ 155 Ma) Show details

      Origin of the Name

      Named after the town of Kimmeridge on the Dorset coast (UK). The Kimmeridge Clay Formation is the main oil source rock in the North Sea petroleum province.

      Rank
      chronostratigraphic Stage
      Status
      valid formal name
      Valid name
      In Short
      -
      Age
      Kimmeridgian - Kimmeridgian
      Thickness
      -
      Geographical extent
      -
      Type area
      Dorset (UK)
      Comment
      -
    • Oxfordian (~ 161 Ma) Show details

      Origin of the Name

      Named after the city of Oxford (UK).

      Rank
      chronostratigraphic Stage
      Status
      valid formal name
      Valid name
      In Short
      -
      Age
      Oxfordian - Oxfordian
      Thickness
      -
      Geographical extent
      -
      Type area
      Oxfordshire (UK)
      Comment
      -
  • Middle Jurassic (~ 175 Ma) Show details

    Origin of the Name
    -
    Rank
    chronostratigraphic Epoch
    Status
    valid formal name
    Valid name
    In Short
    -
    Age
    Aalenian - Callovian
    Thickness
    -
    Geographical extent
    -
    Type area
    -
    Comment
    -
    • Callovian (~ 165 Ma) Show details

      Origin of the Name

      Named derived from the old spelling of Kellaways Bridge (Wiltshire, UK), 2 miles NE Chippenham.

      Rank
      chronostratigraphic Stage
      Status
      valid formal name
      Valid name
      In Short
      Last stage of the Middle Jurassic.
      Age
      Callovian - Callovian
      Thickness
      -
      Geographical extent
      -
      Type area
      Wiltshire (UK)
      Comment
      -
    • Bathonian (~ 168 Ma) Show details

      Origin of the Name

      Named after the town of Bath (Somerset, UK), near Bristol. The city itself is largely built of Bath Stone, a bright white oolithic limestone that is quarried nearby.

      Rank
      chronostratigraphic Stage
      Status
      valid formal name
      Valid name
      In Short
      -
      Age
      Bathonian - Bathonian
      Thickness
      -
      Geographical extent
      -
      Type area
      Somerset (UK)
      Comment
      -
    • Bajocian (~ 172 Ma) Show details

      Origin of the Name

      Named after the town of Bayeux (Calvados, France) in Normandy.

      Rank
      chronostratigraphic Stage
      Status
      valid formal name
      Valid name
      In Short
      -
      Age
      Bajocian - Bajocian
      Thickness
      -
      Geographical extent
      -
      Type area
      Paris Basin (France)
      Comment
      -
    • Aalenian (~ 175 Ma) Show details

      Origin of the Name

      Named after the town of Aalen (Baden-Württemberg, S Germany), 100 km E Stuttgart.

      Rank
      chronostratigraphic Stage
      Status
      valid formal name
      Valid name
      In Short
      First stage of the Middle Jurassic.
      Age
      Aalenian - Aalenian
      Thickness
      -
      Geographical extent
      -
      Type area
      Schwäbische Alb (Baden-Württemberg, S Germany)
      Comment
      Formerly attributed to the «Lias» (i.e. Early Jurassic).
  • Early Jurassic (~ 200 Ma) Show details

    Origin of the Name
    -
    Rank
    chronostratigraphic Epoch
    Status
    valid formal name
    Valid name
    In Short
    -
    Age
    Hettangian - Toarcian
    Thickness
    -
    Geographical extent
    -
    Type area
    -
    Comment
    -
    • Toarcian (~ 183 Ma) Show details

      Origin of the Name

      Named after the town of Thouars (Deux-Sèvres, France), S Saumur. The protected stratotype lies in an old quarry.

      Rank
      chronostratigraphic Stage
      Status
      valid formal name
      Valid name
      In Short
      The Pliensbachian/Toarcian boundary is marked by a major faunal turnover and regional stratigraphic gaps, followed by a global Oceanic Anoxic Event (OAE) recorded as black shales (such as the well-known «Posidonienschiefer» of Southern Germany, equivalent to the French «schistes-carton»).
      Age
      Toarcian - Toarcian
      Thickness
      -
      Historical stratotype of the Toarcian stage at Thouars (Deux-Sèvres, France) (14.09.2001 – A. Morard)..
      Historical stratotype of the Toarcian stage at Thouars (Deux-Sèvres, France) (14.09.2001 – A. Morard)..
      Candidate GSSP at Peniche, Portugal (06.10.2005 - A. Morard).
      Candidate GSSP at Peniche, Portugal (06.10.2005 - A. Morard).
      Geographical extent
      -
      Type area
      Deux-Sèvres (Paris Basin, France)
      Comment
      Originally (d'Orbigny 1849), the Toarcian encompassed the whole Aalenian and part of the Bajocian as well.
      • Late Toarcian Show details

        Origin of the Name
        -
        Rank
        chronostratigraphic Substage
        Status
        valid formal name
        Valid name
        In Short
        -
        Age
        late Toarcian - late Toarcian
        Thickness
        -
        Geographical extent
        -
        Type area
        -
        Comment
        -
      • Middle Toarcian Show details

        Origin of the Name
        -
        Rank
        chronostratigraphic Substage
        Status
        valid formal name
        Valid name
        In Short
        The Middle Toarcian is defined biostratigraphically by the ammonite genera Hildoceras and Haugia.
        Age
        middle Toarcian - middle Toarcian
        Thickness
        -
        Geographical extent
        -
        Type area
        -
        Comment
        The Middle Toarcian is rather poorly documented in Switzerland. When present it occurs either in the younger part of the posidonia shales facies, or as a condensed horizon at the base of units of mainly Late Toarcian age. It is better developped in the rosso ammonitco facies of the Southern Alps and in the austroalpine Allgäu Fm.
      • Early Toarcian Show details

        Origin of the Name
        -
        Rank
        chronostratigraphic Substage
        Status
        valid formal name
        Valid name
        In Short
        The Early Toarcian is characterized almost worldwide by black shales (among which the well-known «Posidonienschiefer» of Southern Germany, and the French «schistes-carton») with an ammonite fauna composed mainly of dactylioceratids, harpoceratids and early hildoceratids.
        Age
        early Toarcian - early Toarcian
        Thickness
        -
        Geographical extent
        -
        Type area
        -
        Comment
        In Switzerland, the Early Toarcian is recorded as posidonia shales (e.g. Rietheim Mb. in the Swiss Jura, Couches du Creux de l'Ours of the Préalpes Médianes) or as hiatal, condensed or reworked horizons (sometimes conglomeratic such as at the base of the Mols Mb. in the Helvetic Realm or as Fe/Mg-crusts such as at the top of the austroalpine Agnelli Fm.). In the southern Alps, the rosso ammonitico facies starts during the Early Toarcian.
    • Pliensbachian (~ 190 Ma) Show details

      Origin of the Name

      Named after the village of Pliensbach (Baden-Württemberg, S Germany), 30 km E Stuttgart.

      Rank
      chronostratigraphic Stage
      Status
      valid formal name
      Valid name
      In Short
      -
      Age
      Pliensbachian - Pliensbachian
      Thickness
      -
      Geographical extent
      -
      Type area
      Schwäbische Alb (Baden-Württemberg, Süddeutschland)
      Comment
      Sometimes still informally subdivided into Carixian and Domerian substages.
      • Domerian Show details

        Origin of the Name

        Names after Monte Domaro (Lombardia, N Italy).

        Rank
        chronostratigraphic Substage
        Status
        informal term
        Valid name
        In Short
        -
        Age
        late Pliensbachian (= Domerian) - late Pliensbachian (= Domerian)
        Thickness
        -
        Geographical extent
        -
        Type area
        -
        Comment
        -
      • Carixian Show details

        Origin of the Name

        Named after Charmouth (Dorset, UK).

        Rank
        chronostratigraphic Substage
        Status
        informal term
        Valid name
        In Short
        First, informal substage of the Pliensbachian.
        Age
        early Pliensbachian (= Carixian) - early Pliensbachian (= Carixian)
        Thickness
        -
        Geographical extent
        -
        Type area
        Dorset (UK)
        Comment
        -
    • Sinemurian (~ 196 Ma) Show details

      Origin of the Name

      Named after the town of Sémur-en-Auxois (Côte-d'Or, France).

      Rank
      chronostratigraphic Stage
      Status
      valid formal name
      Valid name
      In Short
      -
      Age
      Sinemurian - Sinemurian
      Thickness
      -
      Geographical extent
      -
      Type area
      Yonne and Côte-d'Or (Paris Basin, Bourgogne, France)
      Comment
      Formerly restricted to its early part, followed by the disused Lotharingian.
      • «Lotharingian»

        Origin of the Name

        Named after the Lorraine region (Lotharingium = carolingian province), NE France.

        Rank
        chronostratigraphy
        Status
        obsolete term (disused)
        Valid name
        In Short
        Former chronostratigraphic subdivision corresponding to the Late Sinemurian substage.
        Age
        late Sinemurian - late Sinemurian
        Thickness
        -
        Geographical extent
        -
        Type area
        Lorraine (Paris Basin, France)
        Comment
        -
    • Hettangian (~ 200 Ma) Show details

      Origin of the Name

      Named after the town of Hettange (Moselle, N France), just south of the border with Luxembourg,

      Rank
      chronostratigraphic Stage
      Status
      valid formal name
      Valid name
      In Short
      First stage of the Jurassic.
      Age
      Hettangian - Hettangian
      Thickness
      -
      Geographical extent
      -
      Type area
      Moselle (Paris Basin, France)
      Comment
      Formerly forming, together with the Rhaetian, the so-called «Infralias».