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Investigation of structural controls on the drainage system of north‑western Nigeria

Arogundade Augustine Babatunde, Ajama Ojudoo Darius, Ayinde Ifeoluwa Stephen, Falade Sesan Cornelius, Awoyemi Musa Olufemi

Acta Geophysica

2023

Vol. 71, no. 4

1747--1762

Gravity and magnetic field datasets coupled with Shuttle Radar Topography Mission (SRTM) digital elevation data over north-western Nigeria were interpreted to delineate subsurface and surface structures, and determine their influence on the drainage system within Sokoto Basin and its surrounding environment. The Improved Logistic Filter and Euler Deconvolution techniques were applied to the residual fields of the gravity and magnetic data to delineate lineaments and their depths of occurrence, respectively. The lineaments mapped from gravity and magnetic data revealed a major N–S and NE–SW, and W–E trend respectively and in several cases were aligned with surface lineaments from the SRTM digital elevation data. The results revealed that the drainage channel of Rivers Niger, Sokoto, Rima, Zamfara, Ka, Kasanu, Gagere, Kuromoni, Malendo and Kontagora are closely aligned with several lineaments emanating from the underlying basement. The 2-D forward models confirmed the presence of these lineaments and delineated intrusives within Sokoto Basin. This study concluded that the drainage system of north-western Nigeria is structurally controlled.

Wybrane aspekty podziemnego magazynowania wodoru

Tarkowski R.

Przegląd Geologiczny

2017

Vol. 65, nr 5

282--291

The article describes the subject of underground hydrogen storage in the context of energy storage using hydrogen as a carrier, and shows its role in the Polish energy policy. The review of the most recent papers was performed to provide the information about hydrogen properties and options for underground hydrogen storage (salt caverns, depleted hydrocarbons fields, deep aquifers) in Poland. Analysis of the literature indicates small practical experiences in the underground hydrogen storage. The behaviour of underground-stored hydrogen is more complex than expected. Previous results indicate that this option may in future become the preferred solution for storing excess electricity related to the irregular supply from renewable sources. Geological formations can provide the possibility of storing energy on a medium- and long-term time scale. Knowledge of the underground storage of carbon dioxide and other gases will be useful for searching ofsites for underground storage of this gas. Due to the planned increasing share of renewable energy in electricity production in Poland, the issue of underground hydrogen storage will become increasingly relevant.