Provenance studies of sandstone facies exposed near igbile southwestern Nigeria: Petrographic and geochemical approach.

Simple item page
dc.contributor.authorIkhane, P.R
dc.contributor.authorAkintola, A.I
dc.contributor.authorBankole, S.I
dc.contributor.authorOyinboade, Y.T
dc.date.accessioned2019-09-20T14:04:52Z
dc.date.available2019-09-20T14:04:52Z
dc.date.issued2014
dc.descriptionStaff publicationsen_US
dc.description.abstractThe petrography, as well as the major, trace and rare earth element compositions of ten (10) sandstone samples of Maastrichtian Afowo Formation exposed near Igbile, Southwestern Nigeria, have been investigated to determine their provenance, source area weathering conditions, paleoclimate and tectonic setting using petrographic analysis and Inductively Coupled Plasma - Mass Spectrometry (ICP-MS). Results of the petrographic analysis revealed that quartz is the most dominant detrital mineral with (86%) followed by weathered plagioclase feldspar (5.10%) and rock fragments (10.9%). The quartz grain is sub-angular to sub-rounded in shape and the sandstones were classified as quartz arenites, sublitharenites and subarkoses based on framework composition of quartz, feldspar and rock fragment plots. This suggests a recycled orogen source for the sandstones and deposition in a humid climate, evidenced by the weathered feldspars. Eleven (11) major, seventeen (17) trace and fourteen (14) rare earth elements were obtained from the geochemical analysis. The major elements values range in concentration from 0.01%–81.39% with SiO2 being the dominant oxide followed by Al2O3 and Fe2O3 constituting over 95% of the major oxides; K2O, TiO2, Na2O, CaO, MgO and P2O5 made up the remaining 5%. The average ratio of SiO2/Al2O3 valued 4.31 for the sandstone is appreciably high indicating that it has been heavily weathered. The trace elements range in concentration from 0.2 ppm–1651.2 ppm with Zr being the most dominant element an indication of orogenic recycling. The rare earth elements range in concentration from 0.01 ppm–163.7 ppm with Ce having the highest concentration, depicting that the sandstones were deposited in an oxidizing environment. Also, the trace element relationship illustrated from the spider plot shows chemical coherence and uniformity of the sandstones. The chondrite normalized rare earth elements (REE) plot shows enrichment in the Light REE over the heavy REE for the sediment with strong negative Eu anomaly values between (0.57–0.69) suggesting a felsic provenance derived from upper continental crust for the sandstones.en_US
dc.identifier.citationIkhane, P. R., Akintola, A. I., Bankole, S. I., & Oyinboade, Y. T. (2014). Provenance studies of sandstone facies exposed near igbile southwestern Nigeria: Petrographic and geochemical approach. Journal of Geography and Geology, Vol.6(2), 47pp.en_US
dc.identifier.urihttps://ir.unilag.edu.ng/handle/123456789/5844
dc.language.isoenen_US
dc.publisherJournal of Geography and Geologyen_US
dc.relation.ispartofseriesJournal of Geography and Geology;Vol.6(2)
dc.subjectMaastrichtianen_US
dc.subjectprovenanceen_US
dc.subjectpetrographicen_US
dc.subjectsubarkosesen_US
dc.subjectchondriteen_US
dc.subjectResearch Subject Categories::TECHNOLOGYen_US
dc.titleProvenance studies of sandstone facies exposed near igbile southwestern Nigeria: Petrographic and geochemical approach.en_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Provenance Studies of Sandstone Facies Exposed Near Igbile.pdf
Size:
1.33 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Geosciences-Scholarly Publications