Study of Palinspastic Reconstructions and Paleogeography, Its Implication for Petroleum System of Southeast Offshore Seram and South Offshore Onin

Hutagaol, Sisdeo (2025) Study of Palinspastic Reconstructions and Paleogeography, Its Implication for Petroleum System of Southeast Offshore Seram and South Offshore Onin. Skripsi thesis, UPN "Veteran"Yogyakarta.

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Abstract

The Southeast Offshore Seram and South Offshore Onin areas are located within
the Onin–Kumawa Basin, which is part of a complex tectonic system in Eastern
Indonesia. This system is driven by the interactions among the Australian Plate, the
Pacific Plate, and the Eurasian Plate. While these areas are situated within a
promising hydrocarbon pathway, similar to the Bintuni and Seram Basins, their
potential has not yet been fully tapped. This study aims to examine the tectonic
evolution, geological structural characteristics, paleogeographic reconstruction,
and the implications for the petroleum system. We employed an integrative
approach utilizing 2D seismic data, well logs, stratigraphic correlation, and
palinspastic restoration. The methods employed in this study include interpreting
horizons and faults on 2D seismic sections, analyzing subsurface depth structure
maps, conducting isochrone and paleogeographic analyses, and performing
gradual section restoration to understand deformation evolution. Model validation
was carried out using the principles of structural geometric balance, strain
calculations, and the integration of stratigraphic and structural data. Additionally,
this study compiled a synthesis of the petroleum system based on the sequence of
deposition and the evolving tectonic dynamics. The study's results indicate that this
basin experienced tectonic evolution from a pre-Tertiary extensional phase to a
Tertiary contractional phase. During this process, active geological structures
served as both hydrocarbon traps and migration pathways. The region's
paleogeography transitioned from a passive margin to a foredeep system as a result
of Neogene inversion. The petroleum system of the basin consists of Triassic shale
source rocks, Jurassic sandstone reservoirs, and Tertiary carbonate sediments, with
Miocene to Pliocene shale acting as seals.
Keywords
: Onin-Kumawa, Palinspastic, Paleogeography, Petroleum System,
Structural Geology

Item Type:	Tugas Akhir (Skripsi)
Additional Information:	Sisdeo Hutagaol (Penul;is - 111210087); Alfathony Krisnabudhi (pembimbing)
Uncontrolled Keywords:	Onin-Kumawa, Palinspastic, Paleogeography, Petroleum System, Structural Geology
Subjek:	Q Science > QE Geology T Technology > TN Mining engineering. Metallurgy
Divisions:	Fakultas Teknologi Mineral dan Energi > (S1) Teknik Geologi
Depositing User:	UPA Perpustakaan
Date Deposited:	20 Nov 2025 02:39
Last Modified:	20 Nov 2025 02:39
URI:	http://eprints.upnyk.ac.id/id/eprint/45611

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