Ophiolite emplacement in NE Oman: constraints from magnetotelluric sounding

Details Ophiolite emplacement in NE Oman: constraints from magnetotelluric sounding Ophiolite emplacement in NE Oman: constraints from magnetotelluric sounding

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009geoji.176..753t&link_type=abstract

Geophysical Journal International, Volume 176, Issue 22, pp. 753-766.

Astronomy and Astrophysics

Astronomy

1

Electrical Properties, Magnetotelluric, Obduction Tectonics, Crustal Structure

Scientific paper

Magnetotelluric (MT) data have been acquired across the Samail Ophiolite, Oman mountains, along a 115km transect in January 2005. Twenty-five MT stations were deployed approximately every 4km along a profile perpendicular to the coastline near Muscat. The profile extends from the Huw'l/Meeh subwindow in the northwestern part of the profile and crosses the Saih Hatat window, a Tertiary domal culmination that folds a major NE-facing recumbent fold nappe, and ends along the southern boundary between the Dasir and Ibra ophiolite blocks. The survey aimed to investigate the tectonic evolution of the emplacement of the Samail Ophiolite by delineating major faults and geological boundaries on a crustal scale.
The data shows complex behaviour with the influence of static shift effects and anomalously high phases exceeding 90°. Phase tensor analysis and 3-D forward modelling hint that the upper plate-lower plate (UP-LP) shear zone has a 3-D effect on the data in the northern part of the profile.
Rotated MT impedances were inverted using a 2-D code. Major resistivity interfaces coincide with the location of the UP-LP shear zone near the surface, and dip towards the Arabian margin suggesting a southwest orientated underthrusting prior to the ophiolite emplacement. The para-autochthonous and less deformed upper plate is a resistor, whereas the strongly deformed lower plate is more conductive.

Affiliated with

Also associated with

No associations

Rating

Ophiolite emplacement in NE Oman: constraints from magnetotelluric sounding does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Ophiolite emplacement in NE Oman: constraints from magnetotelluric sounding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ophiolite emplacement in NE Oman: constraints from magnetotelluric sounding will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-975925