NDLI: Acoustic impedance interpretation for sand distribution adjacent to a rift boundary fault, Suphan Buri basin, Thailand

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Acoustic impedance interpretation for sand distribution adjacent to a rift boundary fault, Suphan Buri basin, Thailand

Content Provider	Semantic Scholar
Author	Ronghe, S. Surarat, Korakot
Copyright Year	2002
Abstract	A seismic-derived acoustic impedance volume was used to image the locations and shapes of water-saturated sands deposited within the producing interval of a continental half graben. Wire-line log crossplots showed that high values of impedance relate to sand lithology. Constrained sparse spike inversion resulted in good comparisons between the derived impedance traces and band-filtered wire-line impedances. Maximum impedance extractions in map view and three-dimensional (3-D) displays revealed two styles of sand distribution: axial deposits comprising delta lobes and boundary fault-induced deposits comprising fan deltas and sand-filled feeder canyons. Coarse-grained sedimentation was dictated by the structural configuration of the basin. Axial sedimentation prograded from south to north, plunging into the basin. Boundary-fault influence on sedimentation was controlled by a transfer zone and relay ramp geometry between en echelon fault segments and showed two component pathways: fan deltas were transported perpendicular to the fault, whereas feeder canyons transported sediment downslope to interfinger with the rift-floor deposits. These styles of structure and sedimentation support previously published models of structural-sedimentation interactions in rifts.
Starting Page	1753
Ending Page	1771
Page Count	19
File Format	PDF HTM / HTML
DOI	10.1306/61EEDD6E-173E-11D7-8645000102C1865D
Volume Number	86
Alternate Webpage(s)	https://www.cgg.com/data/1/rec_docs/3042_Thailand_2002_AAPG.pdf
Alternate Webpage(s)	https://doi.org/10.1306/61EEDD6E-173E-11D7-8645000102C1865D
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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