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Cenozoic
Mesozoic
Late Paleozoic
Early Paleozoic
Neoproterozoic


Information provided by geoscience team at Ahmadu Bello University, Zaria, Nigeria --see About

Welcome to the Northwest Africa Lexicon of Stratigraphic Units!
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Quaternary Superficial Fm
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Tarfaya Fm
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Izic Fm
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Tah Fm
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SenegalBasin Miocene Fm
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Laayoune Fm
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Salmat Fm
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SenegalBasin Paleogene Fm
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Continental Intercalaire Fm
Oualata Super Gr
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SenegalBasin LateCret Fm
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Lebtaina Fm
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SenegalBasin Turonian Fm
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Serie d’In Akamil Fm
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Aguidir Fm
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SenegalBasin Mid-Cret Fm
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Tan Tan Fm
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SenegalBasin Neocomian Fm
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Puerto Cansado Fm
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Tarfaya Mid-Jurassic Platform Fm
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Tarfaya Early-Jurassic Marl Fm
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SenegalBasin Jurassic Platform Fm
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SenegalBasin Salt Fm
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Tarfaya Salt Fm
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SenegalBasin Rift-basin Fm
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Tarfaya Rift-basin Fm
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Telig Gr
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Hassi Bachir Fm
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Rouge Fm
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Gypses d'Hassi Taibine Fm
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Calcaires du Djebel Berga Fm
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Hassi Aouleouel Fm
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Gres de Garet Dehb Fm
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Ain El Barka Fm
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Upper Tirechoumine Fm
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Gres de Kreb ed Douro Fm
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Argilles de Tirechoumine Fm
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Kerb Es Sefiat Fm
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Iridets Fm
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Lower Tirechoumine Fm
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Tibaradine Fm
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Argiles de Teguentour Fm
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El Guettara Gr
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Kerb Es Slouguia Fm
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Gres de Khenig Fm
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Kerb En Naga Fm
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Argiles de Temertasset Fm
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Mecheri Fm
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Oued Ghazal Fm
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Gres de Mehden Yahya Fm
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Argiles de Mehden Yahya Fm
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Oued Tsabia Fm
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Calcaires de Azzel Matti Fm
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Calcaires de Takoula Fm
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Bafata Shale Fm
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Argilles d’Adrar Morrat Fm
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Argilles de l’Adrar Morrat Fm
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Bou Bernous Fm
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Dev-F4-5 Fm
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In Dagouber Gr
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Oued Talha Gr
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Tenemouj Gr
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Dkhissa Fm
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Saheb El Djir Fm
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Cusselinta Sandstone Fm
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Djebilet Gr
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Oued Samene Fm
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Upper Fedj Mlehas Fm
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Zemlet Fm
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Zone de Passage Fm
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Argiles de Oued Ali Fm
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Buba Shale Fm
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Hot Shales Fm
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Lower Fedj Mlehas Fm
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Oued Chig Gr
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Sebkha Mabbes Fm
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Toba el Hamar Gr
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Tamadjert Fm
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Felar Felar Fm
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M’Kratta El Golea Fm
Dahr Super Gr
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Tichit Gr
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Gara Louki Fm
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Les Gres de Oued Saret Fm
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In Tahouite Fm
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Les Argiles d’Azzel Tiferouine Fm
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Les Gres de Ouargla Fm
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Quartzites de Hamra Fm
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Les Gres d’El Atchane Fm
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Les Argiles d’El Gassi Fm
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Les Gres Fm
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Erg Cheg Gr
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Gabu Sandstone Fm
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In Kraf Fm
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Oujeft Gr
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Zone des Alternances Fm
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Caium Sandstone Fm
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Les Gres Des Ajjers Fm
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Cantari Shale Fm
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Kreb-En-Naga Gr
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Nouatil Gr
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Gara Sayada Fm
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Ghezziane Fm
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Les Series Ouallen Fm
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Les Series Pourpree Fm
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Pirada Shale Fm
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Azlaf Gr
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Teniagouri Gr
Adrar Super Gr
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Jbeliat Gr
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Assabet el Hassiane Gr
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Bir Amrane Gr
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Touiderguilt-Tifounke Fm
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Aouleigate Fm
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Eib Nous Fm
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Aouinet Ould Bou Derballa Fm
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Ligdam Fm
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Terrarit Fm
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Tawaz Fm
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Tenoumer Fm
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Terioufet Fm
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Gouamir Fm
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Aguelt el Mahba Fm
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Tod Fm
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Touirist Fm
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En Nesoar Fm
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Khatt Fm
Atar Gr
El Mreiti Gr
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Ksar Torchane Fm
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Foum Chor Fm
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Azougui Fm
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Chegga Fm
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Agueni Fm
Char Gr
Douik Gr
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Glebet et Atores Fm
Hodh Super Gr