Timor trough and Australia

Facies show topographic wave migrated 80 km during the past 3 m.y.

J. J. Veevers*, D. A. Falvey, S. Robins

*Corresponding author for this work

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Correlation of seismic profiles with the Pliocene and Quaternary facies at DSDP Site 262 in the axis of the 3 km deep Timor Trough shows that Australia and the lateral facies sequence of the Timor Trough foredeep that defines a topographic wave have approached each other by 80 km during the past 3 m.y. The Timor Trough and the island of Timor have the form of a wave of amplitude 6 km and half-wavelength of 100 km; the implied uplifting of Timor as this wave and Australia approached each other is confirmed by the present elevation of autochthonous bathyal deposits on Timor. The time-transgressive depositional and deformational facies of the Timor Trough foredeep resemble those of deep-sea trenches, so that foredeeps and trenches cannot be discriminated by the surface processes that operate in them.

Original languageEnglish
Pages (from-to)217-227
Number of pages11
JournalTectonophysics
Volume45
Issue number2-3
DOIs
Publication statusPublished - 15 Feb 1978

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