Brazilian-African Diaspora in Ghana

Essien, Kwame

doi:10.14321/j.ctt1dxg8rh

Cited by 10 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Germeraad et al, (1968), Legoux (1978), had assigned the age range of the Agbada Formation between Oligocene and Early Miocene using the same marker specie. Essien et al, (2016) and Artzner and Dorhofer (1978) Early Miocene: Early Miocene age (P620) was delineated in the present study based on the First Downhole Occurrence of Praedapollis africanus at 4962 ft. This agrees with the work of Legoux (1978), who used the marker specie to establish the early phase of Miocene and is also comparable to the submission of Evamy et al, (1978) 2014), likewise used the occurrence of Verrutricolporites rotundiporis and Praedapollis africanus occurrence to support the existence of P620-P770 subzone (Early-Middle Miocene).…”

Section: Palynological Zones Demarcated In the Studied Wellmentioning

confidence: 69%

“…The late Oligocene age was demarcated at 6725 ft. based on the quantity base of Peregrinipollis nigericus. Essien et al, (2016), Adeigbe and Ochigbo (2017), used similar palynomorph to age date Middle Miocene to Early Oligocene sediment. The late Oligocene interval is also categorized by significant reduction in percentage of occurrences of Zonocostites ramonae as recorded in the well.…”

Section: Palynological Zones Demarcated In the Studied Wellmentioning

confidence: 99%

See 1 more Smart Citation

New Oligocene to Early Miocene Palynomorph Zonation of GZ-1 Well, Onshore Western Niger Delta, Nigeria

Amiewalan¹,

Balogun²

2021

jasem

View full text Add to dashboard Cite

Palynological studies was carried out on GZ-1 well from the onshore western Niger Delta in order to recognized a new detected developments in the varieties of key pollen and spore taxa that have shorter and more distinguished interval zones to advance stratigraphical delineation. Palynological analysis was carried out using the conventional maceration technique for recovering acid insoluble organic-walled microfossils from sediments. The result yielded rich and diversified palynomorphs. The main assemblage were dominated by angiosperm pollen grain (dominant global flora from Late Cretaceous onwards) followed by pteridophytes/bryophyte spore. Dinoflagellate cysts, on the contrast, were less diverse while the Gymnosperm pollen were scarce. The identified palynomorph were used to establish seven main zones - AF1 Psilatricolporites crassus zone, AF2 Verrucatosporites usmensis zone, AF3 Triplochiton scleroxylon zone, AF4 Crassoretitriletes vanraadshooveni zone, AF5 Acrostichum aureum zone, AF6 Gemmatriporites ogwashiensis zone and AF7 Retitricolporites irregularis zone in this study. Established on quantitative events, the zones were also divided into seven subzones with some having finer subdivisions into (a) and (b) ranging in age from Early Oligocene to Early Miocene. Previous unfiled event trends of important indicator taxa of spores and pollen accredited to Pelliceria, Caesalapinoideae, Stenochlaena palustris, Polypodiaceae, Lygodium microphyllum, Polypodiaceae, Adiantaceae and Amanoa (Euphorbiaceae) have assisted improvement of formerly used palynological zonation schemes in the Niger Delta. It is anticipated that this quantitative zonation scheme erected, will help with imminent palynostratigraphical studies in the onshore Niger delta area.

show abstract

Section: Palynological Zones Demarcated In the Studied Wellmentioning

confidence: 69%

Section: Palynological Zones Demarcated In the Studied Wellmentioning

confidence: 99%