El Mers Group

El Mers Group
Stratigraphic range: Bathonian-Callovian
~168–164 Ma

PreꞒ

Ꞓ

O

S

D

C

P

T

J

K

Pg

N

↓
El Mers Group; Stratigraphic range: Bathonian-Callovian; ~168–164 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Group
Sub-units	El Mers Formations 1-3
Underlies	Unconformity with Barremian or Plio-Pleistocene sediments
Overlies	Ich Timellaline-Bou Akrabene Formation
Thickness	Over 500 m (1,600 ft)
Lithology
Primary	Marl, gypsum (only in unit 3)
Other	Sandstone, limestone
Location
Coordinates	33.5°N 4.3°W
Approximate paleocoordinates	28.3°N 2.0°W
Region	Boulemane & Azilal Provinces
Country	Morocco
Extent	Middle Atlas
	El Mers Group (Morocco)

The El Mers Group is a geological group in the Middle Atlas of Morocco. It is subdivided into 3 formations named the El Mers 1, 2 and 3 Formations respectively. It is a marine deposit primarily consisting of marl, with gypsum present in the upper part of unit 3.[1][2] and is the lateral equivalent of the terrestrial Guettioua Sandstone. Dinosaur remains are among the fossils that have been recovered from the group most notably those of "Cetiosaurus" mogrebiensis[3] and Adratiklit.[4]

References

Oukassou, Mostafa; Charrière, André; Lagnaoui, Abdelouahed; Gibb, Stacey; Michard, André; Saddiqi, Omar (April 2016). "First occurrence of the Ichnogenus Selenichnites from the Middle Jurassic Strata of the Skoura Syncline (Middle Atlas, Morocco); Palaeoecological and palaeoenvironmental context". Comptes Rendus Palevol. 15 (5): 461–471. doi:10.1016/j.crpv.2015.09.013.
Oukassou, M.; Boumir, Kh.; Benshili, Kh.; Ouarhache, D.; Lagnaoui, A.; Charrière, A. (June 2019). "The Tichoukt Massif: a Geotouristic Play in the Folded Middle Atlas (Morocco)". Geoheritage. 11 (2): 371–379. doi:10.1007/s12371-018-0287-y. ISSN 1867-2477.
Allain, Ronan; Aquesbi, Najat (2008). "Anatomy and phylogenetic relationships of Tazoudasaurus naimi (Dinosauria, Sauropoda) from the late Early Jurassic of Morocco" (PDF). Geodiversitas. 30 (2): 345–424.
Maidment, Susannah C.R.; Raven, Thomas J.; Ouarhache, Driss; Barrett, Paul M. (January 2020). "North Africa's first stegosaur: Implications for Gondwanan thyreophoran dinosaur diversity". Gondwana Research. 77: 82–97. doi:10.1016/j.gr.2019.07.007.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[1] Oukassou, Mostafa; Charrière, André; Lagnaoui, Abdelouahed; Gibb, Stacey; Michard, André; Saddiqi, Omar (April 2016). "First occurrence of the Ichnogenus Selenichnites from the Middle Jurassic Strata of the Skoura Syncline (Middle Atlas, Morocco); Palaeoecological and palaeoenvironmental context". Comptes Rendus Palevol. 15 (5): 461–471. doi:10.1016/j.crpv.2015.09.013.

[2] Oukassou, M.; Boumir, Kh.; Benshili, Kh.; Ouarhache, D.; Lagnaoui, A.; Charrière, A. (June 2019). "The Tichoukt Massif: a Geotouristic Play in the Folded Middle Atlas (Morocco)". Geoheritage. 11 (2): 371–379. doi:10.1007/s12371-018-0287-y. ISSN 1867-2477.

[3] Allain, Ronan; Aquesbi, Najat (2008). "Anatomy and phylogenetic relationships of Tazoudasaurus naimi (Dinosauria, Sauropoda) from the late Early Jurassic of Morocco" (PDF). Geodiversitas. 30 (2): 345–424.

[4] Maidment, Susannah C.R.; Raven, Thomas J.; Ouarhache, Driss; Barrett, Paul M. (January 2020). "North Africa's first stegosaur: Implications for Gondwanan thyreophoran dinosaur diversity". Gondwana Research. 77: 82–97. doi:10.1016/j.gr.2019.07.007.