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首页> 外文期刊>Africa geoscience review >Application of Landsat Enhanced Thematic Mapper plus (ETM+) and Radar Imageries for Geological boundary delineation and lineament mapping in a transition zone around Ijebu-Ode, Southwestern Nigeria
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Application of Landsat Enhanced Thematic Mapper plus (ETM+) and Radar Imageries for Geological boundary delineation and lineament mapping in a transition zone around Ijebu-Ode, Southwestern Nigeria

机译：Landsat增强型专题测绘仪增强版（ETM +）和雷达图像在尼日利亚西南部Ijebu-Ode周围过渡带的地质边界定线和地形图绘制中的应用

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摘要

The unconformity between the basement complex of Precambrian age and the overlying sediments of the Abeokuta Formation of Upper Cretaceous age was investigated around Ijebu-Ode. The uneven nature of the contact zone was revealed by the application of Landsat Enhanced Thematic Mapper Plus (ETM+) and Radar Imageries. The study also mapped some linear structures which have some geological significance with particular reference to groundwater and civil engineering investigations. The coexistence of different dielectric reflectivity at the crystalline-clastic rocks' interphase revealed the nature of the contact running approximately NW - SE. The sediments are south of the contact and the basement is north of the contact. The uneven contact between the Cretaceous sediments and the crystalline basement often result in the failure of water boreholes and engineering projects, where ambiguity in defining rock boundaries has caused many construction failures in the past can now be avoided.
机译：研究了Ijebu-Ode附近前寒武纪年龄的基底复合体与上白垩纪Abeokuta组上覆沉积物之间的不整合面。通过使用Landsat Enhanced Thematic Mapper Plus（ETM +）和Radar Imageries揭示了接触区的不均匀性质。该研究还绘制了一些具有地质意义的线性结构，特别是对地下水和土木工程的研究。晶体-碎屑岩界面处不同介电反射率的共存揭示了大约NW-SE的接触性质。沉积物在接触点以南，地下室在接触点以北。白垩纪沉积物和晶体基底之间不均匀的接触常常导致水井和工程项目的失败，在这些地方，界定岩石边界的模棱两可已导致过去可以避免许多施工失败。

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