Browsing by Author "Kana, A.A."

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    COMPACTION CHARACTERISTICS CURVES OF SOILS IN NASSARAWA – EGGON TOWN AND ENVIRONS, CENTRAL NIGERIA.
    (Department of Geology and Mining, Nasarawa State University Keffi, 2020-06-21) Umbugadu, A. A.; Goki, N.G.; Kana, A.A.; Usman, Halima Osu
    The study was conducted to study the complication arising from compaction curves of soils in Nassarawa – Eggon, North – Central Nigeria. Twenty representative samples were studied and the British Standard 1377 methods of sampling and analysis were employed for the grain size distribution and compaction. The soils are predominantly silty sand. Values of the optimum moisture content range from 10.0 g/cm3 – 34.5 g/cm3 while the maximum dry density values range from 1.61% to 1.88%. The compaction pattern can be noticed from samples AUS 14 to AUS 20 that the maximum dry density decreases because of the nature of the soil, being a boundary between the basement and sedimentary. The investigation has established two types of compaction curves: the single regular peaks and the irregular peaks, signifying the degree of compaction and nature of the soils.. There is a correlation between the soil index properties; water content and dry density on the kind of curves.
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    Kwoi 2016 Multiple Tremors: An Emerging Geotourism Phenomenon
    (Department of Geology and Minning, Nasarawa State University Keffi, 2017-01-01) Goki, N.G.; Baba, Adama Oleka; Iyakwari, Shekwoyandu; Tanko, I.Y.; Kana, A.A.; Umbugadu, A.A.; Usman, Halima Osu
    For a stretch of three days, the residents of Kwoi, Central Nigeria were held hostage by what is now accepted as an earth tremor of magnitudes ranging between 2.9 and 3.1. In its initial stages, various versions of interpretations were given including religious and traditional myths. These triggered national and international attention making the area to be temporarily a tourist’s attraction of some sorts with different groups visiting and reporting different versions. The aim of this paper is to report first hand the occurrence of systematic cracks on rocks and buildings as well as the safety aspects associated with this tremor. The study confirms that this is a purely geoscientific phenomena triggered by deep seated tectonic movements manifested on the surface through short distance travel of the accompanying vibrations which lead to collapse and breakage of buildings. It is unpredictably episodic but relatively safe for tourists as an intra-cratonic tremor.