GYPSUM IN THE DUKAMAJE AND DANGE FORMATIONS SOUTHEAST OF THE RIMA RIVER, SOKOTO BASIN NIGERIA
GYPSUM IN THE DUKAMAJE AND DANGE FORMATIONS SOUTHEAST OF THE RIMA RIVER, SOKOTO BASIN NIGERIA
| dc.contributor.author | AGBATA, PATRICK C. | |
| dc.date.accessioned | 2014-02-07T10:06:17Z | |
| dc.date.available | 2014-02-07T10:06:17Z | |
| dc.date.issued | 1989-07 | |
| dc.description | A THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL, AHMADU BELLO UNIVERSITY, IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF THE DEGREE OF MASTER OF SCIENCE (GEOLOGY) DEPARTMENT OF GEOLOGY FACULTY OF SCIENCE AHMADU BELLO UNIVERSITY ZARIA JULY, 1989. | en_US |
| dc.description.abstract | The area covered by this project is located on the the southeast bank of the Rina River a r e a of the Sokoto Basin. Gypsum occurs in the Sokoto Basin in the b r a c k i s h water Dukamaje and t h e marine Dange Formations of Mastrichtian and Upper Paleocene ages respectivelly. Gypsum occurs in fibrous forms as discontinous thin in beds and veins , inseparable , and as minute disseminate crystals ; it also occurs as large sscale nitecrystals . X-ray diffractometry of clay mineral in shale and fluid inconcusion tudies in gypsum indicate e an alkaline ne reducing environment for the Dukamaje and Danmage Formations and a low temperature (40°C) of gypsum formation respectivelly . Chemical analysis of the gypsum from Dukamaje and Dange Formations shows t h at t h e Ca:Mg ratio is 12:1 and 14:1 respectivelly . This ratio indicate that the fluids that formed gypsum are marine in orign and were later central a genetically to form gypsum once the solubility product was exceeded. A dianamic mode of orgin is proposed for the gypsum in the study a r e a based on the above data . This involes a continue diffusion of SO2 - ions into sediments from the overlying seawater and the diss ion of Carbonate particles which releases Ca2+ ions, thus increasing the concentrations of Ca2+ and SO2- ions in the sediments. Gravitational compaction, evidenced by the presence of two lignite seams in the Taloka Formation at Taloka village, further increased the Ca2+ and SO2- ions concentrations by ion filteration through charged-net clay membranes. Both the Ca2+ and SO2- ions combined to form gypsum once the solubility product of this mineral was exceeded. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/622 | |
| dc.language.iso | en | en_US |
| dc.subject | GYPSUM, | en_US |
| dc.subject | DUKAMAJE, | en_US |
| dc.subject | DANGE, | en_US |
| dc.subject | FORMATIONS, | en_US |
| dc.subject | SOUTHEAST, | en_US |
| dc.subject | RIMA RIVER, | en_US |
| dc.subject | SOKOTO BASIN, | en_US |
| dc.subject | NIGERIA. | en_US |
| dc.title | GYPSUM IN THE DUKAMAJE AND DANGE FORMATIONS SOUTHEAST OF THE RIMA RIVER, SOKOTO BASIN NIGERIA | en_US |
| dc.type | Thesis | en_US |