Depositional environments signatures, maturity and source weathering of Niger Delta sediments from an oil well in southeastern Delta State, Nigeria

Oni, Samuel; Olatunji, Akinade S.

doi:10.18393/ejss.297245

Cited by 11 publications

(10 citation statements)

References 28 publications

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“…CIA is also much affected by grain size. It increases as grain size decreases (Oni and Olatunji, 2017).…”

Section: Chemical Weatheringmentioning

confidence: 96%

Geochemical Study Geochemical Study of Injana Formation and its Tectonic Significances in Selected Areas-Iraq

Al-Mothen¹

2021

IGJ

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This study is concerned with geochemical analysis of major oxides; these are SiO2, CaO, MgO, Fe2O3, Al2O3, Na2O, K2O, TiO2, in addition to MnO. Atomic Absorption Spectrophotometer and Ultra Violet Spectrophotometer tools were used to examine ten samples represented the detritus LOI sediments of Injana Formation in Iraq in two sites which are (S1) site at Dohuk Governorate and (S2) at Al-Najaf Governorate; where five samples for each sites were collected.

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“…CIA is also much affected by grain size. It increases as grain size decreases (Oni and Olatunji, 2017).…”

Section: Chemical Weatheringmentioning

confidence: 96%

Geochemical Study Geochemical Study of Injana Formation and its Tectonic Significances in Selected Areas-Iraq

Al-Mothen¹

2021

IGJ

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“…An increase in cia values is generally attributed to climatic fluctuations from cold to warm and humid [40]- [41]. For the Marriaga Swamp, the cia is in a medium range for the lower sedimentary sequence (220-162 cm) and high over 162 cm to near-surface (Fig.…”

Section: Chemical Index Of Alteration (Cia)mentioning

confidence: 98%

“…The cia increases within the medium range from bottom to upper sequences, indicating climatic changes from 1,130 ± 90 a to present, from more arid and maybe colder conditions in late Holocene to humid and warmer conditions nowadays. The cia ranges hint at low weathering from 0 to 40, moderate from 40 to 70, and high from 70 to 100 [40]. The Marriaga Swamp cia values range from 65 to 82, with an average of 72, which means the Marriaga Swamp sediments are highly weathered.…”

Section: Chemical Index Of Alteration (Cia)mentioning

confidence: 99%

Paleoenvironmental Interpretation of Last Millennium Sediments in the Marriaga Swamp, Atrato Delta, Colombia

Betancurth

Barriga

2021

Cien.Ing.Neogranadina

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This paper presents the first paleoenvironmental reconstruction of the last 1,130 a of the Marriaga Swamp in the Atrato River delta in northwestern Colombia. The geochemical analyses of a 220 cm sediment core retrieved from the swamp reveal interesting climatic episodes and sedimentary changes in the last millennium. We split the core into three segments, according to sediment features, organic carbon content (OC), and geological ages. Records show different alternations of humid and dry periods, biological productivity, carbonate precipitation, weathering grade, and high heavy metal concentrations. The segments also concur with the geochemical differences determined by (Zr+Rb)/Sr, Ca/Ti Mn/Fe, OC/Ti, Mg/Ca Ba/Al, Sr/Al, and Ca/Al ratios. The older sequence (between 1,130 ± 90 a and 870 ± 70 a) shows a dry period with intermittent flooding events and high OC production in subareal conditions, followed by a more humid environment between 870 ± 70 a and 530 ± 40 a, with depletion of trace element ratios and OC. The more recent period (530 ± 40 a to present) evinces an environment dominated by the fluvial regime, based on a lower Ca/Al ratio and a rise of OC. The statistical correlations display three main clusters that distinguish among organic-biological productivity, bedrock source components, and heavy metal inputs.

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“…Geochemical fingerprints can predict where petroleum, water and other valuable minerals can be found [2]. The use of inorganic geochemical fingerprints for the classification of siliciclastic sediments, provenance, tectonic setting and depositional environment have been carried out by different workers [2][3][4][5][6][7][8][9]. The geochemical study using X-ray fluorescence analysis for the reservoir rocks of Surma Basin in Bangladesh showed that the reservoir rocks are mainly greywacke to lithic arenite and are from quartzose sedimentary provenance which was deposited under active continental margin setting [2].…”

Section: Introductionmentioning

confidence: 99%

“…Trace and rare earth element ratios were used to determine the geochemical signatures of some sediment from the Niger Delta Basin and the conclusion was that felsic source rock is the provenance for the sediment from the Agbada Formation [8]. The silicate weathering index of some sediment from southeastern Delta suggested a low to moderate weathering of the source area during transportation [9].…”

Section: Introductionmentioning

confidence: 99%

Geochemical Analysis of Sediments from Sahaiawei-1 Well of the Northern Delta Depobelt in the Niger Delta Basin, Nigeria

Itiowe¹,

Lucas

Avwenagha³

2021

J. Sci. Res.

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Geochemical analysis of sediments from Sahaiawei-1 Well of the Northern Delta Depobelt in the Niger Delta Basin was carried out to classify the sediments, determine the provenance, tectonic setting and depositional environment. Twenty (20) ditch cutting samples between 1500 and 10730 ft. were subjected to X-ray fluorescence analysis to determine the elemental composition. The result for the classification of the sediments shows that the sediments were classified as Fe-shale and Fe-sand. The discriminant function diagrams for provenance signature and tectonic setting show that the sediments were plotted within the quartzose sedimentary provenance and passive continental margin tectonic setting fields respectively. The depositional environment using inorganic geochemistry shows that the sediments were deposited with in the continental, transitional and marine environments. This research has provided up to date information on the geochemistry of the Northern Delta Depobelt which would help in hydrocarbon exploration in the area.

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Depositional environments signatures, maturity and source weathering of Niger Delta sediments from an oil well in southeastern Delta State, Nigeria

Cited by 11 publications

References 28 publications

Geochemical Study Geochemical Study of Injana Formation and its Tectonic Significances in Selected Areas-Iraq

Geochemical Study Geochemical Study of Injana Formation and its Tectonic Significances in Selected Areas-Iraq

Paleoenvironmental Interpretation of Last Millennium Sediments in the Marriaga Swamp, Atrato Delta, Colombia

Geochemical Analysis of Sediments from Sahaiawei-1 Well of the Northern Delta Depobelt in the Niger Delta Basin, Nigeria

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