Seismic Attributes Aided Characterization of Margin Backstepping and Advance along Isolated Carbonate Sequences, Sirt Basin, Libya
DOI:
https://doi.org/10.54172/mjsc.v36i4.590Keywords:
Cyclicity, Sea-level changes, Isolated carbonate platform, Sirt Basin, LibyaAbstract
Isolated carbonate platforms are common and contain significant hydrocarbon accumulations, particularly in the tectonically complex Sirt Basin in Libya. This study investigates the margin cyclicity of two carbonate stratigraphic sequences developed on an isolated carbonate platform in the NW Sirt Basin using 3-D post-stack seismic volume and wireline log data. The two sequences (sequences 4 and 5) are bounded by unconformity surfaces from the base and top. Seismic attributes show that each sequence displays a cycle of margin backstepping followed by margin advance for several hundred meters. This study concludes that the margin backstepping and advance are mainly influenced by sea-level changes. A rapid sea-level rise caused the backstepping, whereas slow sea-level rise caused the margin advance.
Downloads
References
Abadi, A. M., Van Wees, J.-D., Van Dijk, P. M., & Cloetingh, S. A. (2008). Tectonics and subsidence evolution of the Sirt Basin, Libya. AAPG bulletin, 92(8), 993-1027. DOI: https://doi.org/10.1306/03310806070
Abdalla, M., & Yang, W. (2021). Progradation of a middle Eocene carbonate slope system, Assamoud Field, Sirte Basin, north central Libya–Implications on the dynamics of lateral growth of isolated carbonate platforms. Marine and Petroleum Geology, 129, 105119. DOI: https://doi.org/10.1016/j.marpetgeo.2021.105119
Ahlbrandt, T. S. (2001). The sirte basin province of Libya: sirte-zelten total petroleum system. US Department of the Interior, US Geological Survey.
Barnes, A. E. (2016). Handbook of poststack seismic attributes. Society of Exploration Geophysicists. DOI: https://doi.org/10.1190/1.9781560803324
Becker, R., House, M., & Kirchgasser, W. (1993). Devonian goniatite biostratigraphy and timing of facies movements in the Frasnian of the Canning Basin, Western Australia. 293–321. High resolution biostratigraphy. Geological Society, London, Special Publication, 70, 357. DOI: https://doi.org/10.1144/GSL.SP.1993.070.01.20
Blanchon, P. (2011). Back-stepping. Encyclopedia of Modern Coral Reefs: Structure, form and process: New York, Springer-Verlag, 77-84. DOI: https://doi.org/10.1007/978-90-481-2639-2_41
Guiraud, R., & Bosworth, W. (1997). Senonian basin inversion and rejuvenation of rifting in Africa and Arabia: synthesis and implications to plate-scale tectonics. Tectonophysics, 282(1-4), 39-82. DOI: https://doi.org/10.1016/S0040-1951(97)00212-6
Hallett, D. (2002). Petroleum geology of Libya: BV Elsevier. Amsterdam, The Netherlands.
Mitchum Jr, R. (1977). Seismic stratigraphy and global changes of sea level: Part 11. Glossary of terms used in seismic stratigraphy: Section 2. Application of seismic reflection configuration to stratigraphic interpretation.
Mouzughi, A., & Taleb, T. (1981). Tectonic Elements of Libya (1: 2,000,000). National Oil Corporation of Libya.
Roohi, M. (1996). A geological view of source-reservoir relationships in the western Sirt Basin. Geology of the Sirt Basin: Amsterdam, Elsevier, 2, 323-336.
Schlager, W. (2005). Carbonate sedimentology and sequence stratigraphy. SEPM (Socity Sedimentary for Geology) USA. DOI: https://doi.org/10.2110/csp.05.08
Downloads
Published
How to Cite
License
Copyright (c) 2021 Muneer A. Abdalla
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright of the articles Published by Almukhtar Journal of Science (MJSc) is retained by the author(s), who grant MJSc a license to publish the article. Authors also grant any third party the right to use the article freely as long as its integrity is maintained and its original authors and cite MJSc as original publisher. Also they accept the article remains published by MJSc website (except in occasion of a retraction of the article).