Zaouïa Formation
The Zaouïa Formation, also known as the Zaouïa Schists,[1] is a Middle Ordovician (Darriwilian) geologic formation in Algeria. The formation crops out in the Aïssa Mimoun Massif near Zaouïa of Stita at the confluence of Wadi Stita and Wadi Seba at about 5 kilometres (3.1 mi) northeast of Tizi-Ouzou in the municipality of Makouda,[2] in the Kabylian Mountains of northern Algeria. The type locality is about 29 kilometres (18 mi) away from the Katian outcrops of northern Djurdjura.[3]
| Zaouïa Formation | |
|---|---|
| Stratigraphic range: Middle Ordovician | |
| Type | Geological formation |
| Underlies | Djurdjura Limestone |
| Overlies | Akaoudj Tuff |
| Lithology | |
| Primary | Metamorphosed mudstone |
| Other | Tuff |
| Location | |
| Coordinates | 36.9°N 4.0°E |
| Approximate paleocoordinates | 72.8°S 98.3°E |
| Region | Tizi Ouzou Province |
| Country | Algeria |
| Extent | Localized west of Aissa Mimoun Mountain |
| Type section | |
| Named for | Zaouïa of Stita |
| Location | Sidi Namaane |
| Coordinates | 36°46′05″N 004°01′54″E |
  Zaouïa Formation (Algeria) | |
Description
The Zaouïa Formation consists of slightly metamorphosed green or grey micaceous mudstones with many intercalated tuff beds.[3]
Fossil content
The following fossils were reported from the formation:[2]
- Blastozoa
- Lepidocalix pulcher[4]
- Trilobites
- Colpocoryphe arago
- Pharostoma pulchra
- Hydrozoa
- Inocaulis gigas
- Pterobranchia
- Thallograptus barbieri
- Dendrograptus sp.
- ?Airograptus betieri
- Strophomenata
- Actinomena orta
- ?Strophomena barbieri
See also
References
- Zaouïa Schists at Mindat.org
- Zaouïa of Stita at Fossilworks.org
- Makhlouf et al., 2017, p.301
- Makhlouf et al., 2017, p.302
Bibliography
- Makhlouf, Y.; B. Lefebvre; E. Nardin; A. Nedjari, and C.R.C. Paul. 2017. The diploporite blastozoan Lepidocalix pulcher from the Middle Ordovician of northern Algeria: Taxonomic revision and palaeoecological implication. Acta Palaeontologica Polonica 62. 299–310. Accessed 2020-05-29.
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