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Research Paper | Geology | Volume 4 Issue 11, November 2015 | Pages: 303 - 315 | Djibouti
Biostratigraphic and Palaeoenvironmental Study of the Tob?ne Phosphatic Series (Western Senegal)
Abstract: The geological section of the phosphate quarry of Tobne associated with the boreholes of prospecting, carried out by miners, confirms the Tobnes lithostratigraphic and biostratigraphic settings. A lithostratigraphic analysis [1], [2] highlights three sedimentary formations, in agreement with previous results [3] From a biostratigraphic point of view, the planktonic microfauna highlighted E8 to E13 biozones in the phosphatic group, dating it to the early Lutetian to Bartonian age and helping to develop a more complete biozonation throughout the deposit. The pelagism index indicates an evolution of sedimentary environment between a slightly opened internal platform, favourable to detrital and siliceous deposits, and an intermediate platform more conducive to calcium phosphate deposits.
Keywords: Tobne, Taba, phosphate, lithostratigraphy, biostratigraphy
How to Cite?: Moustapha DIAGNE, Mamadou Fall, Raphal SARR, Mouhamadou Bachir Diouf, Ndye Penda Dione, "Biostratigraphic and Palaeoenvironmental Study of the Tob?ne Phosphatic Series (Western Senegal)", Volume 4 Issue 11, November 2015, International Journal of Science and Research (IJSR), Pages: 303-315, https://www.ijsr.net/getabstract.php?paperid=SUB159052, DOI: https://dx.doi.org/10.21275/SUB159052