Moradi Formation
The Moradi Formation is a geological formation in Niger. It is of Late Permian age. It is informally divided into three subunits. The lower portion of the formation consists of red mudstone, with muddy calcareous sandstone and quartz-granlule conglomerate present as lenses. The middle portion consists of muddy siltstone in thick beds interbedded with red argillaceous sandstone. The lower two thirds of the upper portion of the formation consist of red siltstone intercalated with channel lag intraformational conglomerates, while the upper third consists of barchanoid shaped lenses of conglomeratic sandstone with ventifacts. These facies are indicatived of deposition under arid conditions, with less than 300 millimetres (12 in) of annual rainfall in the Central Pangean desert, with annual temperatures of 30 to 35 °C (86 to 95 °F), but with ephemeral water presence including lakes.
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| Moradi Formation |
|---|
| Stratigraphic range: Lopingian~ |
| Geological formation |
| Izégouandane Group |
| Lower, Middle and Upper Units |
| Teloua 1 Formation |
| Tamamaït Formation |
| 100 metres (330 ft) |
| Mudstone, siltstone |
| Sandstone, conglomerate |
| .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-parser-output .geo-inline-hidden{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}18°48′N 7°12′E / 18.8°N 7.2°E / 18.8; 7.2 |
| 16°36′S 8°12′E / 16.6°S 8.2°E / -16.6; 8.2 |
| Agadez Region |
| Niger |
| Iullemmeden Basin |
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The Moradi Formation is a geological formation in Niger. It is of Late Permian age. It is informally divided into three subunits. The lower portion of the formation consists of red mudstone, with muddy calcareous sandstone and quartz-granlule conglomerate present as lenses. The middle portion consists of muddy siltstone in thick beds interbedded with red argillaceous sandstone. The lower two thirds of the upper portion of the formation consist of red siltstone intercalated with channel lag intraformational conglomerates, while the upper third consists of barchanoid shaped lenses of conglomeratic sandstone with ventifacts. These facies are indicatived of deposition under arid conditions, with less than 300 millimetres (12 in) of annual rainfall in the Central Pangean desert, with annual temperatures of 30 to 35 °C (86 to 95 °F), but with ephemeral water presence including lakes.
Dicynodonts, widespread in other contemporary deposits, appear to be absent, with previous reports being in error. The flora of the formation includes indeterminate voltzian conifers.
| Genus | Species | Notes | Images |
|---|---|---|---|
| Rubidgeinae indet. | Indeterminate | An indeterminate rubidgine gorgonopsian | Life restoration of the rubidgeiine Broomicephalus |
| Genus | Species | Notes | Images |
|---|---|---|---|
| Bunostegos | B. akokanensis | A pareiasaurian reptile | |
| Moradisaurus | M. grandis | A large captorhinid |
| Genus | Species | Notes | |
|---|---|---|---|
| Nigerpeton | N. ricqlesi | A cochleosaurid temnospondyl | |
| Saharastega | S. moradiensis | A basal temnospondyl |
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