Anambra Basin

Anambra Basin is one of the energy-rich inland sedimentary basins in Nigeria.[1]:153 It is a nearly triangular shaped embayment covering about 3000sqKm with a total sedimentary thickness of approximately 9 km.[2]:2[3]:25 [4]

Location

Anambra basin is situated west of the lower Benue Trough and often considered newest formation from the Benue Trough.[5] The basin is bounded to the south by the Niger Delta Basin hinge line.[6] It extends north-westward into the Niger Valley, northward to the Jos massif and north-eastward into Lafia.[6] The eastern and western limits of the basin are defined by the Abakaliki Anticlinorium and Ibadan massif, respectively.[6]:193 [1]:145

Energy Resources

The basin harbours the largest deposit of coal and lignite in Nigeria.[2]:2 Coal mining in Nigeria started in Enugu within the basin. Albert Kitson discovered Coal in 1909 at the Udi Ridge, Enugu; turning the region into a strategic British business area.[7][8] Some of the coal mines operated in Enugu included Ogbete, Ribadu, Onyeama, Okaba and Okpara.[8]

Anambra basin could be next to its underneath Niger Delta basin in hydrocarbon potentials.[1]:153 In addition to coal, the basin holds an estimated gas potential in the region of 10 trillion cubic feet (tcf).[9] Ugwuoba gas fields near Awka, and Igbariam gas fields near Onitsha - an economic hub in the region, contain some of the successfully explored gas wells in the basin.[10] Some of the wells by Shell/BP in the basin include Igbariam-1 and Ajire-1. There are also Akukwa-1 and Akukwa-2 operated between 1938 – 1939 in Ugwuoba.[9][10] Crude oil deposits have also been reported in some parts of Anambra basin,[2]:1 with estimated 1 or more billion barrels in reserves.[3]:16[9][11]

References

  1. 1 2 3 Anthony .S. Ekine; K. M. Onuoha (2008). "Burial History Analysis and Subsidence in the Anambra Basin, Nigeria". Department of Physics University Of Port Harcourt, Nigeria; Department of Geology University of Nigeria, Nsukka, Nigeria. www.ajol.info. Retrieved September 20, 2016.
  2. 1 2 3 Olubayo Leye Babatunde. "The main oil source formations of the Anambra Basin, Southeastern Nigeria" (PDF). Geology Department, University of Ibadan, Nigeria. www.searchanddiscovery.com. Retrieved June 22, 2016.
  3. 1 2 Iheanacho Princewill Ugochukwu. "Subsurface Evaluation of Source Rock and Hydrocarbon Potential of the Anambra Basin, South Eastern Nigeria" (PDF). Dissertation.com Boca Raton, Florida, USA. www.bookpump.com. ISBN 1-59942-339-1. Retrieved June 22, 2016.
  4. ↑ Ola-Buraimo A Olatunji (March 2013). "Biostratigraphy And Paleoenvironment Of The Coniacian Awgu Formation In Nzam-1 Well Anambra Basin Southeastern Nigeria" (PDF). INTERNATIONAL JOURNAL OF SCIENTIFIC & TECHNOLOGY RESEARCH. www.ijstr.org. ISSN 2277-8616. Retrieved July 12, 2016.
  5. ↑ Obaje Nuhu George; Nuhu George Obaje (2009). "4 - The Benue Trough". Geology and Mineral Resources of Nigeria. Springer. p. 57. ISBN 3-540-92684-4.
  6. 1 2 3 Shirley O Odunze; Gordian C. Obi (April 2013). "Sedimentology and sequence stratigraphy of the Nkporo Group (Campanian–Maastrichtian), Anambra Basin, Nigeria". Department of Geology, Anambra State University, Uli, Nigeria. 2 (2). doi:10.3724/SP.J.1261.2013.00026. Retrieved September 18, 2016.
  7. ↑ "Coal Mine in Enugu: The Black Gold". Enugu State Tourism Board. enugustatetourismboard.com. Retrieved September 18, 2016.
  8. 1 2 "From 1909: Sad tale of Enugu coal industry". Francis Igata. www.vanguardngr.com. March 30, 2016. Retrieved September 18, 2016.
  9. 1 2 3 "Onshore OPL-907". GEC Petroleum Development Company. www.gecpetroleum.com. Retrieved June 22, 2016.
  10. 1 2 "Onshore OPL-917". GEC Petroleum Development Company. www.gecpetroleum.com. Retrieved September 18, 2016.
  11. ↑ "Anambra Basin". Seven Energy. www.sevenenergy.com. Retrieved June 22, 2016.
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