Formation de Rossemaison

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Representation and status

Color CMYK
(0%,10%,69%,4%)
Color RGB
R: 245 G: 220 B: 75
Rank
lithostratigraphic Formation
Validity
Unit is in Use
Status
valid formal name

Nomenclature

Deutsch
Rossemaison-Formation
Français
Formation de Rossemaison
Italiano
Formazione di Rossemaison
English
Rossemaison Formation
Origin of the Name

Forage au nord de Rossemaison (JU)

Historical Variants

Terre jaune = Gelberde auct., Rossemaison Formation (Pirkenseer et al. 2018)

Description

Thickness
4-5 bis max. 70-140 m (Pirkenseer et al. 2018)

Hierarchy and sequence

Upper boundary

contact net avec les marnes gris foncé ou une lumachelle à huîtres et riche en quartz du Groupe de Froidefontaine

Lower boundary

Sidérolithique: passage graduel, avec matériel remanié

Age

Age at top
  • early Oligocene
Age at base
  • late Eocene
Dating Method

Micromammifères de la zone MP20 et charophytes de la zone MP21 (Gander 2013, Pirkenseer et al. 2018, Mojon et al. 2018).

Geography

Geographical extent
Dépôts restreints à la partie centrale du Bassin de Delémont.
Type area
Bassin de Delémont (JU)
Type profile
  • Rossemaison (JU)
    Site particularities
    • Obergrenze
    • Untergrenze
    • typische Fazies
    Site accessibility
    • Bohrkern
    Coordinates
    • (2592870 / 1244480)
    Note
    • Forage COM-F5: Weidmann 1990, Pirkenseer et al. 2018, Mojon et al. 2018
Reference profiles
  • Courrendlin (JU)
    Site particularities
    • Obergrenze
    • Untergrenze
    • typische Fazies
    Site accessibility
    • Bohrkern
    Coordinates
    • (2595695 / 1242795)
    Note
    • Forages HRT-F8/9: Weidmann 1990, Pirkenseer et al. 2018, Mojon et al. 2018

Palaenography and tectonic

Tectonic unit (resp. main category)
Kind of protolith
  • sedimentary

References

Definition
Pirkenseer Claudius, Rauber Gaëtan, Roussé Stéphane (2018) : A revised Palaeogene lithostratigraphic framework for the Northern Swiss Jura and the Southern Upper Rhine Graben and its relationship to the North Alpine Foreland Basin. Riv. Italiana Pal. Strat. 124/1, 163–246

p.177: Generally yellow to red marls with variable sand content and reworked Sidérolithique components that are limited to the central Delémont subbasin (Liniger 1925). Locally evaporites (gypsum), lacustrine limestones (“Raiche, Raitsche”) and conglomerates are intercalated (e.g. Rollier 1910), thus hinting at a fluvio-lacustrine, probably endorheic environment. The Rossemaison Fm has been historically (mining) subdivided in four units (see Liniger 1925), which however cannot be followed throughout the subbasin.

The Rossemaison Fm pinches out towards the southern basin margin, with a variable maximum thickness of 70 m (drilling COM-F5; 128.0 to 65.0 m, Fig. 10) to more than 140 m near Delémont (abandoned mine Près Grebis; Liniger 1925). At the subbasin margin the thickness ranges between 10 m (Châtillon; Gander 2013) and 4-5 m (drilling HRT-F8; 21.9 to 19.2 m, Fig. 12).

  • Calcaire d'eau douce de Courcelon

    Name Origin

    Courcelon (JU)

    Rank
    lithostratigraphic unit
    Status
    local name (informal)
    In short

    Niveau de calcaire d'eau douce le plus élevé (et seul affleurant) au sein de la Terre Jaune.

    Age
    late Eocene
  • «Raitsche»

    Rank
    lithostratigraphic unit
    Status
    incorrect term (disused)
    In short

    Calcaire d'eau douce pré-molassique du Jura bernois.

    Age
    late Eocene
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