Sedimentary and petrofacies analyses of the Amasiri Sandstone, southern Benue Trough, Nigeria: Implications for depositional environment and tectonic provenance
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- 作者：A.U. Okoroa ; E.O. Igweb ; ezekieloigwe@yahoo.com" class="auth_mail" title="E-mail the corresponding author ; C.S. Nwajidec
- 关键词：Petrography ; Lithofacies ; Provenance and tectonic setting ; Amasiri Sandstone ; Southern Benue Trough
- 刊名：Journal of African Earth Sciences
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：123
- 期：Complete
- 页码：258-271
- 全文大小：6569 K
文摘
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Lithofacies and petrofacies gave clues on depositional and tectonic settings.
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The sandstones are essentially feldspathic and arkosic arenites.
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Provenance area is the uplifted continental block related to a rifted Benue Trough.
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Amasiri Sandstone is a product of storm (mass flow) and tidal shelf processes.
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Paleoclimatic evaluation indicates semi-arid to semi-humid climatic regimes.