干旱区生态环境知识资源中心(Arid): The Lower Cretaceous Continental Intercalaire around Tidikelt (Central Sahara, Algeria): Sedimentology, palaeontology and ichnology

Arid

DOI	10.1016/j.jafrearsci.2021.104396
	The Lower Cretaceous Continental Intercalaire around Tidikelt (Central Sahara, Algeria): Sedimentology, palaeontology and ichnology
	Draoui, Abdelmalik; Bendella, Mohamed; Ferre, Bruno; Benhamou, Miloud; Ben Abdelkrim, Moussa; Benyoucef, Madani
通讯作者	Draoui, A (corresponding author), Kasdi Marbeh Univ, Earth Sci & Universe Dept, BP 511,Ghardaia Rd, DZ-30000 Ouargla, Algeria.
来源期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
EISSN	1879-1956
出版年	2022
卷号	185
英文摘要	The Lower Cretaceous strata are exposed over a large surface in the northern part of the Ahnet basin. They consist of transgressive, horizontal formations overlying the folded Palaeozoic formations by angular uncon-formity across the Tidikelt region. The present study addresses the respective lithostratigraphical units of the Continental Intercalaire succession and their subsequent palaeo-environment in the Tidikelt area using a trace fossil analysis combined with sedimentological and palaeontologic data. The lithological and sedimentological features of the study sections recognised eleven sub-units organised within four lithological units: the Lower Clay Unit of Barremian-Neocomian age consisting of three Sub-units (Akablie Sandstone, Sidi Mahmoud Clays and Pebbly Sands); the Quartzite Sandstones Unit referred to a Late Barremian-Early Aptian age; the Middle Clay-Sandstone Unit consisting of a thick deposit of Early Aptian-Albian age, divided into five Sub-units (Tit Sand-stones, In Salah Sand-Clay, In Salah Sandstone, Foum El Bouib Sandstone, and Sandstone-Clay); and the Upper Clay Unit comprising the Oued Taleh Sand and the El-Golea Clays Sub-units. Vertebrate remains all evidence a Late Albian-Early Cenomanian age for the top part of the Continental Intercalary. Ichnologic data analysis documents lower diversity of the invertebrate trace fossils: only ten ichnotaxa are recorded so far and grouped in five ichnoassemblages. Fuvial-lacustrine ichnoassemblage represents a continental ichnofacies of a fluvial-lacustrine environment: Mermia, Scoyenia and Skolithos ichnofacies. Fluvial Ichnoassemblage of the Quartzite Sandstone Unit is represented by insect trace fossils typical of the Coprinisphaera ichnofacies. Fluvio-marginal ichnoassemblage corresponds to a tidal-influenced, fluvial deposit transgressive on Unit B, represented by Sko-lithos and Psilonichnus ichnofacies. Lower shoreface ichnoassemblage shows the upper part of Unit C, documented by horizontal trace fossils such as Thalassinoides and vertical root traces, all supporting a lower shoreface environment in a semi-arid climate interlined by well-oxygenated episode with nutrient-rich conditions and vegetation dominance. Near to shoreface ichnoassemblage coincides with the upper unit D of coastal deposits with fluvial-tidal influence at the base (Oued Taleh Sands) associated with Scoyenia and Skolithos trace fossils and lagoon deposit of the El-Golea Clays Sub-units.
英文关键词	Lower cretaceous Continentalintercalaire Tidikelt Ahnet basin Trace fossils Vertebrate
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000718277000002
WOS关键词	TRACE FOSSILS ; ENVIRONMENTAL SIGNIFICANCE ; BOUNDARY INTERVAL ; SKOLITHOS BURROWS ; BASIN ; TRANSITION ; DEPOSITS ; ICHNOFACIES ; OPHIOMORPHA ; FRAMEWORK
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374442
作者单位	[Draoui, Abdelmalik] Kasdi Marbeh Univ, Earth Sci & Universe Dept, BP 511,Ghardaia Rd, DZ-30000 Ouargla, Algeria; [Draoui, Abdelmalik; Bendella, Mohamed; Benhamou, Miloud] Mohamed Ben Ahmed Oran 2 Univ, Geodynam Basin & Sedimentary Balance Lab, BP 1524, DZ-31000 El Mnaouer, Oran, Algeria; [Ferre, Bruno] 2 Rue Guy de Maupasst, F-76800 St Etienne Du Rouvray, France; [Ben Abdelkrim, Moussa] Amine Elokkal El Hadj Moussa Egakhamouk Univ Ctr, Geol Dept, BP 10034, DZ-11000 Sarasof, Tamanrasset, Algeria; [Benyoucef, Madani] Univ Mustapha Stambouli Mascara, Fac Nat & Life Sci, DZ-29000 Mascara, Algeria
推荐引用方式 GB/T 7714	Draoui, Abdelmalik,Bendella, Mohamed,Ferre, Bruno,et al. The Lower Cretaceous Continental Intercalaire around Tidikelt (Central Sahara, Algeria): Sedimentology, palaeontology and ichnology[J],2022,185.
APA	Draoui, Abdelmalik,Bendella, Mohamed,Ferre, Bruno,Benhamou, Miloud,Ben Abdelkrim, Moussa,&Benyoucef, Madani.(2022).The Lower Cretaceous Continental Intercalaire around Tidikelt (Central Sahara, Algeria): Sedimentology, palaeontology and ichnology.JOURNAL OF AFRICAN EARTH SCIENCES,185.
MLA	Draoui, Abdelmalik,et al."The Lower Cretaceous Continental Intercalaire around Tidikelt (Central Sahara, Algeria): Sedimentology, palaeontology and ichnology".JOURNAL OF AFRICAN EARTH SCIENCES 185(2022).