Provenance and weathering conditions of the Moloundou swamp sediments, southeast Cameroon: Evidence from mineralogy and geochemistry

Bessa, Armel Zacharie Ekoa; Ngueutchoua, Gabriel; Ekomane, Emile; Bissé, Salomon Bertrant; Eric, Bokanda Ekoko; Chougong, Durane Tchatchouang; Kam, Jacques Alex; Teutsong, Tessontsap

doi:10.1016/j.sesci.2020.06.002

Cited by 11 publications

(4 citation statements)

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“…7 . The negative correlation between SiO 2 and Al 2 O 3 is thought to be because most of the silica is sequestered in quartz (Ramos-Vázquez et al 2017 , Ramos-Vázquez and Armstrong-Altrin 2021 ; Joy et al 2018 ; Ekoa Bessa et al 2021 ). The positive correlations of Fe 2 O 3 , P 2 O 5 , and MgO with Al 2 O 3 suggest that their distribution is mainly controlled by silicates (Bal Akkoca et al 2019 ).…”

Section: Resultsmentioning

confidence: 99%

“…14 ). Hayashi et al ( 1997 ) created a binary diagram of Zr vs TiO 2 that is often utilized in sedimentary provenance research (e.g., Armstrong-Altrin et al 2012 ; Ngueutchoua et al 2019a , b ; Ekoa Bessa et al 2021 ; Kontchipe et al 2021 ; Chougong et al 2021 ). This diagram aids in the identification of mafic rocks (TiO 2 /Zr ˃ 200), intermediate rocks (TiO 2 /Zr ranging between 200 and 55), and felsic igneous rocks (TiO 2 /Zr ˂ 55).…”

Section: Discussionmentioning

confidence: 99%

“…15a ). The tectonic setting of the source area can be determined using the geochemistry of clastic material (Etemad-Saeed et al 2015 ; Ekoa Bessa et al 2021 ). Numerous discrimination diagrams based on sediment chemical content have recently been devised to detect the tectonic setting of unknown basins that of their sources (Roser and Korsch 1986 ; Verma and Armstrong-Altrin 2013 , 2016 ).…”

Section: Discussionmentioning

confidence: 99%

“…Generally, the petrography and geochemistry of siliciclastic and also detrital sediments have been used to reconstruct the tectonic setting of depositional basins, fluvial environments, and lakes (e.g., Armstrong-Altrin 2015 ; Ekoa Bessa et al 2018 ; Hernández-Hinojosa et al 2018 ; Ngueutchoua et al 2019a , b ; Haque and Roy 2020 ; Kwewouo Janpou et al 2022 ) and to interpret the source rock characteristics (Khan and Khan 2015 ; Ngueutchoua et al 2019a , b ; Ramamoorthy and Nazir 2020 ; Abu and Sunkari 2020 ) as well as to infer the paleoweathering of the source areas (Ma et al 2017 ; Ngueutchoua et al 2019a , b ; Ekoa Bessa et al 2021 ). The geochemical composition of sediments depends on various factors, which include source rock nature, weathering intensity, and sediment maturity (McLennan et al 1993 ).…”

Section: Introductionmentioning

confidence: 99%

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Petrography and geochemistry of beach sediments along the central coast of Cameroon: constraints on paleoweathering, provenance, and tectonic setting

et al. 2022

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The paleoweathering, provenance, and tectonic setting of the source region were determined with compositional and geochemical analyses of sediments obtained from the beach locations of Yoyo, Mouanko, and Mbiako along the central coast of Cameroon. The beach sediments are medium to coarse-grained and are brown to light brown. Their mineralogy is dominated by quartz and clay minerals with a medium amount of feldspars, rutile, goethite, hematite, and calcite. Moreover, their petrography is made up of quartz and feldspars, with low proportions of augite, apatite, biotite, and zircon. The sediments are classified as sublitharenite, and they are mostly made up of felsic rocks derived from the adjacent Neoproterozoic magmatic and gneissic basement rocks. Weathering indices such as the chemical index of alteration (CIA) and plagioclase index of alteration (PIA) indicated that in this study, the source area’s weathering intensity was moderate. The index of chemical variability (ICV) indicates a low maturity. The geochemistry data revealed passive and rift settings for the beach areas, which are congruent with the local geology.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Petrography and geochemistry of beach sediments along the central coast of Cameroon: constraints on paleoweathering, provenance, and tectonic setting

et al. 2022

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Geochemical characteristics of shoreline sediments from the Bay of Bengal, Bangladesh: Implications for provenance and source‐rock weathering

Hossain¹,

Kamei

Araoka

2022

Geological Journal

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The detrital mode and geochemical composition of sediments from a coastal section of the Bay of Bengal, Bangladesh, were examined to identify sediment distribution, maturity, provenance and source‐area weathering. The sediments are quartz‐rich with little feldspar and few lithic fragments (Q78F10L12), indicating derivation from a quartzose recycled orogen. The sediments exhibit high SiO2 (88–94 wt%) and low Al2O3 (4–5 wt%) contents. SiO2 shows a marked linear trend and strong negative correlation with Al2O3 (r = −0.95), consistent with the high quartz content. The upper continental crust (UCC) normalization patterns for the sediments show marked depletion in Na2O, CaO, MgO, Sr, Sc and Fe–V, but slightly increased Th and SiO2, indicating a felsic UCC source. The sediments have low to moderate compositional maturity and are classified as sublitharenite. The Al2O3/TiO2 ratio (15–38) suggests that the sediments were derived from intermediate to felsic igneous rocks. Rare‐earth element profiles, discrimination diagrams and various elemental ratios are all consistent with the derivation of the sediment from a felsic igneous source area. The values of the chemical index of alteration (~65–69), chemical index of weathering (~75–84) and plagioclase index of alteration (~70–81) indicate that the source rocks underwent moderate chemical weathering. Comparison with potential Himalayan sediment sources and rocks support derivation of the investigated shoreline sediments from felsic quartzose recycled detritus of that area.

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Gondwana sedimentary rocks of Andigama Basin, Sri Lanka: unraveling weathering dynamics, tectonic setting, and paleoclimate

Gunathilake,

Jayawardana,

Ratnayake

et al. 2024

Int J Earth Sci (Geol Rundsch)

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Provenance and weathering conditions of the Moloundou swamp sediments, southeast Cameroon: Evidence from mineralogy and geochemistry

Cited by 11 publications

References 46 publications

Petrography and geochemistry of beach sediments along the central coast of Cameroon: constraints on paleoweathering, provenance, and tectonic setting

Petrography and geochemistry of beach sediments along the central coast of Cameroon: constraints on paleoweathering, provenance, and tectonic setting

Geochemical characteristics of shoreline sediments from the Bay of Bengal, Bangladesh: Implications for provenance and source‐rock weathering

Gondwana sedimentary rocks of Andigama Basin, Sri Lanka: unraveling weathering dynamics, tectonic setting, and paleoclimate

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