Godfray, GodsonKabohola, JoynaMsabi, Michael2022-11-292022-11-292021Godfray, G., Kabohola, J., & Msabi, M. (2022). Sedimentology and compositional characteristics of siliciclastic and associated sediments in Ruvu basin: implication on paleo-depositional environment, provenance, and tectonic setting. Geology, Ecology, and Landscapes, 1-13.DOI:10.1080/24749508.2021.2022447http://hdl.handle.net/20.500.12661/3541Full text article. Also is Available at https://doi.org/10.1080/24749508.2021.2022447The paleo-depositional environment of theRuvu basin ranges from alluvial,floodplain, low- and high-energy fluvial channels, and deltaic sub-environments of Ngerengere beds, Tanga beds, and Jurassic Msata formations. Amboni limestones that overlap the Karoo sequences, Bagamoyo Formation and Sakura Formation were probably deposited in a shallow marineenvironment. Trace elements show that the sediments were deposited in oxic environments with a V/Cr ratio of 0.85 and Ni/Co ratio of 2.9 to anoxic environments with a V/Cr ratio >4.3.Low Cr, Ni, Co, and V, high Y/Ni and Zr/Crratios of up to 0.83 and 3.6, respectively, and low Ti/Zr ratios ranging from 0.004 to 0.01 indicate a contribution from afelsic source, and few ratios >1show some contribution from a mafic source. This is supported by the diverse enrichment inlight rare earth elements (LREEs), small negative Eu anomaliesand modest heavy REEs reflecting a dominantly granitic source. Theprovenance is probably from the Usagaran mobile belt and Proterozoic Mozambiquemobile belt. The cross-plot between Th and Ta from midJurassic to Cretaceoussediments indicates that the basin was essentially developed as a passivecontinental margin; however, discriminant factor plots of the Karoo indicatethe existence of a rift setting.enSedimentologyDepositional environmentTectonic settingProvenanceDiscriminant factorRift settingRuvu basinPaleo-depositional environmentArticle