Moho signature from wide-angle reflections: Preliminary results of the 1993 Trans-Hudson Orogen refraction experiment

B. Németh, Z. Hajnal, S. B. Lucas

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

In 1993 a combined crustal seismic refraction and wide-angle reflection experiment was conducted over the northern Saskatchewan and Manitoba portion of the Trans-Hudson Orogen by LITHOPROBE. The program included three seismic lines extending over 1900 km in length. The exceptionally high-quality data collected during the field experiment included seismic reflections and refraction events from the Moho and upper lithospheric mantle. The relatively high seismic fold and signal-to-noise ratio of the field observations made it possible to process the wide-angle portion of the data set with standard reflection signal enhancement techniques. The Moho is revealed as a complex interface with significant structural relief (40-52 km) that correlates in first-order fashion with crustal geology and structure. The Moho topography is interpreted as a result of variable ductile reworking and eclogitization of the lower crust.

Original languageEnglish
Pages (from-to)111-121
Number of pages11
JournalTectonophysics
Volume264
Issue number1-4
Publication statusPublished - Oct 30 1996

Fingerprint

Moho
refraction
signatures
Manitoba
Saskatchewan
seismic refraction
signal reflection
geology
crusts
topography
Earth mantle
signal to noise ratios
experiment
reworking
data quality
signal-to-noise ratio
lower crust
seismic reflection
augmentation
relief

Keywords

  • Canada
  • Canadian shield
  • Lithosphere
  • Lithospheric evolution
  • Moho structure
  • Refraction
  • Seismic survey
  • Trans-Hudson Orogen
  • Wide-angle reflection

ASJC Scopus subject areas

  • Earth-Surface Processes
  • Geophysics

Cite this

Moho signature from wide-angle reflections : Preliminary results of the 1993 Trans-Hudson Orogen refraction experiment. / Németh, B.; Hajnal, Z.; Lucas, S. B.

In: Tectonophysics, Vol. 264, No. 1-4, 30.10.1996, p. 111-121.

Research output: Contribution to journalArticle

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