Mapping Sub-Surface Geology from Magnetic Data in the Hides area, Western Papuan Fold Belt, PNG

Irena Kivior; Stephen Markham; Leslie Mellon

doi:10.1071/ASEG2016ab165

25th International Conference and Exhibition – Interpreting the Past, Discovering the Future

ISSN: 2202-0586
E-ISSN:

oa Mapping Sub-Surface Geology from Magnetic Data in the Hides area, Western Papuan Fold Belt, PNG
Authors Irena Kivior^a, Stephen Markham^b and Leslie Mellon^c
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^a Archimedes Consulting, 31 Stirling St. Thebarton, , SA, [email protected] ^b Archimedes Consulting, 31 Stirling St. Thebarton, , SA, [email protected] ^c Archimedes Consulting, 31 Stirling St. Thebarton, , SA, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2016, Issue 25th International Conference and Exhibition – Interpreting the Past, Discovering the Future, Dec 2016, p. 1 - 7
DOI: https://doi.org/10.1071/ASEG2016ab165
- Published online: 01 Dec 2016

Abstract

Horizon mapping using magnetic data was conducted over a part of the Western Papuan Fold Belt, in an area of rugged terrain, where the geological structures are of relatively low complexity. Energy spectral analysis was used to detect magnetic susceptibility contrasts that were laterally merged to form magnetic interfaces corresponding to horizons derived from seismic and well data.

Numerous magnetic interfaces were detected corresponding to: magnetic layers within the Darai Limestone, top of Ieru Formation, intra-Ieru and deeper intra-sedimentary boundaries. These mapped sedimentary surfaces form an anticlinal structure which plunges towards the south-east. A major thrust fault, mapped from magnetic data using automatic curve matching, truncates the anticline in the south-west. Sedimentary magnetic layers were mapped on both sides of this fault. The results obtained from the interpretation of the magnetic data are consistent with structures mapped from seismic and well data.

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References

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Hill, K.C., Keetly, J.T., Kendrick, R.D. and Sutriyono, E., 2004, Structure and Hydrocarbon Potential of the New Guinea Fold Belt, in McClay K.R. (ed), Thrust Tectonics and Hydrocarbon systems: AAPG Memoir 82, pp. 494-514.
Kivior, I., Shi, Z., Boyd, D. and McClay, K.R., 1993, Crustal studies of South Australia based on energy spectral analysis of regional magnetic data. Exploration Geophysics, 24, pp 603D608.
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Smith, R.I., 1990, Tertiary Plate Tectonic Setting and Evolution of Papua New Guinea, in Carmen, G.J and Z (eds), Petroleum Exploration in Papua New Guinea: Proceedings of the first PNG Petroleum Convention, Port Moresby, pp 229-244.
Yates, S., Kivior, I., Damte, S., Markham, S., and Vaughan, F., 2008, Imaging multiple horizons with spectral techniques in the Sirt Basin, Libya. EAGE Non-Seismic Methods Workshop Bahrain.

/content/journals/10.1071/ASEG2016ab165

Article Type: Research Article

Keyword(s): Energy Spectral Analysis; Fault Detection; Hides Gas Field; Horizon Mapping; Magnetic Data

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oa Mapping Sub-Surface Geology from Magnetic Data in the Hides area, Western Papuan Fold Belt, PNG

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