Classification and distribution of recent historic landslides in southern Nigeria

✍ Scribed by C.O. Okagbue

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 448 KB
• Volume: 37
• Category: Article
• ISSN: 0013-7952
• DOI: 10.1016/0013-7952(94)90060-4

✦ Synopsis

Recent historic landslides in southern Nigeria have been catalogued, classified and analysed in terms of their seasonal, geologic and topographic distributions.

it is found that 58% of the landslides fall within the complex* category (mostly slide-debris flows), while only 42% classify as ordinary slides. It is also found that, while landslides do not normally occur during the first half of the rainy season (March to June), they can occur in the first month of the dry season (November) after the rains, The peak of the rainy season (September) coincides with the greatest number (42%) of the landslides.

The distribution reveals that both sedimentary and non-sedimentary (igneous and metamorphic) terrains are vulnerable with the latter yielding a majority (73%) of the slide-debris flows. Implications of these distributions are discussed.