Carboniferous stratigraphy and depositional environments in the Ahnet Mouydir area (Algerian Sahara): reply to the discussion by Legrand-Blain et al. (DOI: 10.1007/s10347-010-0214-4)

Wendt, Jobst; Kaufmann, Bernd; Bełka, Zdzisław; Korn, Dieter

doi:10.1007/s10347-010-0215-3

Cited by 4 publications

(4 citation statements)

References 5 publications

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“…This scenario is even more complex when faunas of the Beyrichoceras ammonoid zone (late Viséan) described by Conrad (, ) are also missing in the sections studied by Wendt et al . (). This gap conflicts with the main transgression during the late Viséan observed in all of the North African basins (as already noted by Legrand‐Blain et al .…”

Section: Regional Implicationsmentioning

confidence: 97%

“…However, the age differences never reach >20 Myr, as suggested by Wendt et al . () – 345 to 318 Ma for the Ahnet Basin. This scenario is even more complex when faunas of the Beyrichoceras ammonoid zone (late Viséan) described by Conrad (, ) are also missing in the sections studied by Wendt et al .…”

Section: Regional Implicationsmentioning

confidence: 97%

“…Despite the unusual stratigraphic range for some taxa, this fact does not support the problematical scenario proposed by Wendt et al . (, ), who recognized a large gap in the succession from the middle Viséan up to the Bashkirian in the ‘Ahnet’ Basin (in classical literature, sections studied by the latter authors were parts of the Reggan, Ahnet and Mouydir basins; Legrand‐Blain et al ., ). It is certainly surprising to see the mismatch of the foraminiferal zones recognized by some authors in the Ahnet area (e.g.…”

Section: Regional Implicationsmentioning

confidence: 99%

“…However, the stratigraphic ages and possible presence of a hiatus within the middle Viséan to Serpukhovian interval in those basins is currently under discussion (Wendt et al . , ; Legrand‐Blain et al ., ).…”

Section: Foraminiferal and Conodont Assemblagesmentioning

confidence: 99%

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Foraminifers and conodonts from the late Viséan to early Bashkirian succession in the Saharan Tindouf Basin (southern Morocco): biostratigraphic refinements and implications for correlations in the western Palaeotethys

et al. 2013

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The Carboniferous succession in the Tindouf Basin of southern Morocco, North Africa, displays Mississippian to Early Pennsylvanian marine beds, followed by Pennsylvanian continental deposits. The marine beds comprise a shallow water cyclic platform sequence, dominated by shales and fine‐grained sandstones with thin but laterally persistent limestone/dolostone beds. Foraminiferal assemblages have been studied in the limestone beds in several sections from the Djebel Ouarkziz range in the northern limb of the Tindouf Syncline; they indicate that the age of the limestones range from late Asbian (late Viséan) to Krasnopolyanian (early Bashkirian). The foraminiferal assemblages are abundant and diverse, and much richer in diversity than those suggested by previous studies in the region, as well as for other areas of the western Palaeotethys. The richest assemblages are recorded in the Serpukhovian but, unusually, they contain several taxa which appear much earlier in Western European basins (in the latest Viséan). In contrast, conodont assemblages are scarce due to the shallow‐water facies, although some important taxa are recorded in the youngest limestones. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: Regional Implicationsmentioning

confidence: 97%

Section: Regional Implicationsmentioning

confidence: 97%

Section: Regional Implicationsmentioning

confidence: 99%

Section: Foraminiferal and Conodont Assemblagesmentioning

confidence: 99%

See 2 more Smart Citations

Foraminifers and conodonts from the late Viséan to early Bashkirian succession in the Saharan Tindouf Basin (southern Morocco): biostratigraphic refinements and implications for correlations in the western Palaeotethys

et al. 2013

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Carboniferous conodont biostratigraphy

Barrick

Алексеев

Blanco-Ferrera

et al. 2021

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Carboniferous conodont biostratigraphy comprises regional zonations that reflect the paleogeographic distribution of taxa and distinct shallow-water and deep-water conodont biofacies. Some species have a global distribution and can effect high quality correlations. These taxa are incorporated into definitions of global Carboniferous chronostratigraphic units. A standard global Carboniferous zonation has not been developed. The lowermost Mississippian is zoned by Siphonodella species, except in shallow-water facies, where other polygnathids are used. Gnathodus species radiated during the Tournaisian and are used to define many Mississippian zones. A late Tournaisian maximum in diversity, characterized by short-lived genera, was followed by lower diversity faunas of Gnathodus species and carminate genera through the Viséan and Serpukhovian. By the late Viséan and Serpukhovian, Lochriea provides better biostratigraphic resolution. Shallow-water zonations based on Cavusgnathus and Mestognathus are difficult to correlate. An extinction event near the base of the Pennsylvanian was followed by the appearance of new gnathodid genera: Rhachistognathus, Declinognathodus, Neognathodus, Idiognathoides, and Idiognathodus. By the middle of the Moscovian, few genera remained: Idiognathodus, Neognathodus and Swadelina. During the middle Kasimovian and Gzhelian, only Idiognathodus and Streptognathodus species were common. Near the end of the Gzhelian, a rediversification of Streptognathodus species extended into the Cisuralian.

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Hydrocarbon systems in North Africa

Tawadros¹

2011

Geology of North Africa

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Carboniferous stratigraphy and depositional environments in the Ahnet Mouydir area (Algerian Sahara): reply to the discussion by Legrand-Blain et al. (DOI: 10.1007/s10347-010-0214-4)

Cited by 4 publications

References 5 publications

Foraminifers and conodonts from the late Viséan to early Bashkirian succession in the Saharan Tindouf Basin (southern Morocco): biostratigraphic refinements and implications for correlations in the western Palaeotethys

Foraminifers and conodonts from the late Viséan to early Bashkirian succession in the Saharan Tindouf Basin (southern Morocco): biostratigraphic refinements and implications for correlations in the western Palaeotethys

Carboniferous conodont biostratigraphy

Hydrocarbon systems in North Africa

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