A review of geomorphic evidence for climatic change since the late pleistocene in the rain-forest areas of southern Nigeria

Jeje, L.K.

doi:10.1016/0031-0182(80)90004-8

Cited by 8 publications

(8 citation statements)

References 38 publications

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“…Further elucidation on the development of inselbegs can be found in the numerical analysis carried out in southwestern Nigeria by Faniran (1974) and Jeje (1973a;. Also see Whithow & Shakesby (1988) for details on the micromorphology of the feature.…”

Section: Explanatory Description Of Landformsmentioning

confidence: 96%

“…Inselbergs were first described in the former German territories by Bornhardt (1900) and Passarge (1904), and in Nigeria by Falconer (191 1, 1912). Much of the research can be traced to specific areas, such as the granitic-rhyolitic areas of Fort Lamy in Chad (Barbeau & Gkze, 1957); in the Benue basin of northern Cameroon (Roch, 1953); in various parts of East Africa (Cotton, 1961;Harpum, 1963;Doornkamp, 1968;Ojany, 1969;Gardino, 1973;Whithow & Shakesby, 1988); and in West Africa (Savigear, 1960;Thomas, 1965;1966a;1966b;1967;I93 1969Pugh, 1966;Thorp, 1967a;1967b;Jeje, 1970;1973a;1974a;Faniran, 1974;Jeje & Akande, 1990). There are almost as many theories as there are writers on the origin of inselbergs.…”

Section: Explanatory Description Of Landformsmentioning

confidence: 99%

“…Possibly in relation to the theme of deep weathering and erosion, many scholars have proceeded to examine the morphology and erosional history of landform complexes on both basement complex and sedimentary rocks in tropical Africa (see for instance , Hunter, 1959: Iloeje, 1961Hilton, 1966aHilton, , 1966bThorp, 1967a;1967b;1967c;1975;Petit, 1970;Jeje, 1974a;. Also, the development of tropical African landscapes comprising a series of plains at different elevations is being explained in terms of peneplanation, pediplanation and etchplanation.…”

Section: Explanatory Description Of Landformsmentioning

confidence: 99%

“…This theme has since assumed wider dimensions across Africa (see e.g. Willis, 1936;Savigear, 1960;Thomas, 1962;1969;Faniran, 1970;1973a;Jeje, 1972;1973a;Thomas & Thorp, 1980;and Thomas & Summerfield, 1987).…”

Section: Explanatory Description Of Landformsmentioning

confidence: 99%

“…He even opened up the debate on climatic change and its impact on tropical landscapes, a theme developed further by Rhodenburg (1968) and Burke and Durotoye ( 197 1). Faniran (1972), Faniran and Omorinbola (1980) and Jeje (1989) also elaborated on the theme of etchplanation based on the documentation of weathering depth leading to postulations on the tentative relationships between the etchsurfaces, lithology and soil associations. The concept of etchplanation, which is probably the most important geomorphological concept emanating from the humid tropics, is now widely accepted and has been used to explain landform evolution elsewhere (see Mabbutt, 196 1 ;Fairbridge & Finkl, 1980).…”

Section: Explanatory Description Of Landformsmentioning

confidence: 99%

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Contributions on the Physical Geography of Tropical Africa

Jeje

1993

Singap J Trop Geogr

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Of the various aspects of physical geography on tropical Africa, geomorphology appears to have received the greatest attention both in depth and spread of research efforts. Several themes have been developed, among which are individual landform studies with emphasis on the description and explanation of the origin of several landforms, the most important being inselbergs. Applied geomorphology with emphasis on accelerated soil erosion is also an important theme. Up to the 1960s research was generally descriptive and speculative, but with the advances in soil erosion studies in the USA and South Africa, researchers have embarked on programmes involving the measurement of runoff, soil loss, and the determination of several indices of rainfall erosivity and soil erodibility. Coastal studies have also received considerable attention. While earlier studies were largely descriptive, recent studies involve the application of sedimentological principles. Wave parameters and beach profiles are being quantified to facilitate the quantitative study of coastal processes. Palaeogeomorphology was largely focused on the study of the morphology of old sand dunes in the current Sahel zone, on past lake levels and on the formation of stonelines. However, current efforts have moved on to the significance of palaeo deposits for purposes of mineral exploitation. Possibly the most significant new theme relates to hydrology and fluvial studies. Current research efforts in these areas include detailed morphometric analyses of small drainage basins, instrumentation and measurement of stream and sediment discharge, and detailed studies of basin topographic attributes. The paper concludes that future efforts should focus more on empirical studies so that physical geographers can make a fundamental impact on the development of the discipline in tropical Africa.

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Section: Explanatory Description Of Landformsmentioning

confidence: 96%

Section: Explanatory Description Of Landformsmentioning

confidence: 99%

Section: Explanatory Description Of Landformsmentioning

confidence: 99%

Section: Explanatory Description Of Landformsmentioning

confidence: 99%

Section: Explanatory Description Of Landformsmentioning

confidence: 99%

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