{"id":640,"date":"2015-05-10T10:24:13","date_gmt":"2015-05-10T08:24:13","guid":{"rendered":"http:\/\/www.paleurafrica.be\/?page_id=640"},"modified":"2016-10-15T16:42:01","modified_gmt":"2016-10-15T14:42:01","slug":"labo-mrac","status":"publish","type":"page","link":"https:\/\/www.paleurafrica.be\/?page_id=640","title":{"rendered":"<\/span> Labo RMCA"},"content":{"rendered":"

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Sedimentological analysis of fossil-bearing strata, and valorisation of historical collections at the Royal Museum for Central Africa
\n<\/strong><\/span><\/h5>\n

The sediments and fossils studied for the project belong to the Paleogene, a poorly-documented period in the geological history of Central Africa. At that time, the Congo Basin experienced a starvation period, with limited contemporaneous deposition both in the continental part of the basin and in the offshore sediment fan. The Landana section provides a 35m-thick sediment record of a Lower Paleocene to Neogene interval. The section is composed of Paleogene shallow-marine foraminiferal limestone (~25m thickness), followed by Neogene terrigenous clastics. The RMCA team focuses on the sedimentary analysis of the section, including recognition of sedimentation gaps, paleosurface levels and mineral diagenesis. With age information derived from new biostratigraphical data provided by other project partners, events recorded by the Landana section will provide valuable information on Congo Basin dynamics during the Cenozoic. As part of the project, the collection of fossil specimens from Landana and other localities in western Central Africa, housed at the RMCA since the beginning of the 20th<\/sup> century, is being inventoried and reorganized. This has increased the accessibility of the collection, allowing its valorisation through revision of several taxa by project partners.<\/span><\/p>\n

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\"0101 Working session at RMCA (Tervuren) around rock sample collections collected by E. Dartevelle; from left to right: Johan Yans (UNamur), Thierry De Putter & Florias Mees (RMCA), Gregg Gunnell (Duke Univ.) and Louis Taverne (RBINS)<\/span><\/a><\/div>
\"0202 Specimens of the Paleocene crocodilian Congosaurus from Landana (Bequaert field campain, RMCA collections)<\/span><\/a><\/div>
\"0303 Specimens of the Paleocene crocodilian Congosaurus from Landana (Dartevelle field campain, RMCA collections)<\/span><\/a><\/div>
\"0404 Rock samples from the Landana section allowing the reconstruction of the Paleogene series in this area of central Africa (RMCA collections)<\/span><\/a><\/div>
\"0505 Conglomerate with siltite matrix including numerous coprolites and fossil remains (e.g. ray teeth, bottom of the picture); Landana section, layer 12 (RMCA collections)<\/span><\/a><\/div>
\"0606 Nautilid Cimonia landanensis (paratype) collected by Didderich in Landana (RMCA collections)<\/span><\/a><\/div>
\"0707 Phosphatized biogenic fragment (fish ?) in a thin recrystallized and dolomitised carbonated sediment (Landana section, layer 31)<\/span><\/a><\/div>
\"0808 Carbonated sediment made by accumulation of foraminifera tests and a few other fossils (foraminifera packstone\/grainstone); typical facies of the lower part (Paleocene) of the Landana section (layer 8)<\/span><\/a><\/div>
\"0909 Sandstone with dolomitic cement, typical of the upper part (Neogene) of the Landana section (layer 35)<\/span><\/a><\/div><\/div>
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