Sequence stratigraphy of the late paleocene-plio-pleistocene deposits, central Taranaki basin, New Zealand

Abd Alsalam Almasgari, Umar Hamzah

Research output: Contribution to journalArticle

Abstract

A sequence stratigraphic study was carried out on late Paleocene -Pleistocene age sedimentary rocks within northern Graben of the north of Taranaki basin, west of Taranaki Peninsula. Geologically, the study area contains an anticline cut by few faults in the southeast. The purpose of this study was to identify the sequence stratigraphic parameters such as system tracks and seismic facies within the sequences by seismic sections and well data. Eleven 2D seismic lines covering an area of approximately 217.km2 with three wells were used in this study. The seismic line was interpreted to estimate the system tracts, seismic facies and sequence boundaries by petrel 2009 and Kingdom 8.8 softwares. Types of seismic facies such as parallel; sub-parallel, continuous, sub-continuous, wavy, free reflection, chaotic, high amplitude high frequency and high amplitude low frequency were defined in the seismic section. Based on reflection terminations, seismic facies, and well logs, eight sequence boundaries were determined in the study area. These main horizons were confirmed by generating the synthetic seismogram of the well witiora-1 and correlated with the seismic section for locating the sequence boundaries. A new horizon was detected between the upper and lower Giant formation as characterized by onlppingfeature indicating a period of seawater encroachment. The sea level changes resulting to different systemtracts such as LST, TST, and HST were also determined in the seismic sections and gamma ray log.

Original languageEnglish
Pages (from-to)11747-11759
Number of pages13
JournalARPN Journal of Engineering and Applied Sciences
Volume11
Issue number19
Publication statusPublished - 1 Oct 2016

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Stratigraphy
Deposits
Sedimentary rocks
Sea level
Seawater
Gamma rays

Keywords

  • Chronostratigraphy
  • Seismic facies
  • Sequence stratigraphy
  • System tracts
  • Taranaki basin

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Sequence stratigraphy of the late paleocene-plio-pleistocene deposits, central Taranaki basin, New Zealand. / Almasgari, Abd Alsalam; Hamzah, Umar.

In: ARPN Journal of Engineering and Applied Sciences, Vol. 11, No. 19, 01.10.2016, p. 11747-11759.

Research output: Contribution to journalArticle

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