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: Article

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
DOIs
Publication statusPublished - okt. 30 1996

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ASJC Scopus subject areas

  • Geophysics
  • Earth-Surface Processes

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