A broken plate beneath the North Baikal rift zone revealed by gravity modelling

Details A broken plate beneath the North Baikal rift zone revealed by gravity modelling A broken plate beneath the North Baikal rift zone revealed by gravity modelling

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21..129b&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 2, p. 129-132

Mathematics

Logic

25

Brittleness, Ductility, Earth Crust, Geological Faults, Geophysics, Gravimetry, Gravity Anomalies, Mathematical Models, Plates (Tectonics), Rheology, Seismology, Tectonics, Topography, Boundaries, Deformation, Earthquakes, Graphs (Charts), Satellite Observation, Signatures, Spot (French Satellite), Thickness

Scientific paper

We modelled a 1200 km long gravimetric profile in the North Baikal rift to assess the mechanical behavior of the lithosphere, using a numerical model that accounts for realistic brittle-elasto-ductile rheology. We use published seismicity and refraction data, a new 5'x 7.5' free-air/Bouguer gravity and topography data set, and a detailed map of faults obtained from high resolution SPOT imagery. Analysis of the gravity field over the North Baikal rift zone indicates significant asymmetry of the mechanical processes governing the deformation of the diverging sides of the rift. These anomalies cannot be explained by a conventional continuous plate undergoing extension beneath the rift zone, whereas a strong mechanical discontinuity (wedge shaped detachment zone beneath the rift axis) is able to reproduce observations. Such a discontinuous model provides a good fit to the gravity and crustal thickness data and explains the deep seismicity reported there.

Affiliated with

Also associated with

No associations

Rating

A broken plate beneath the North Baikal rift zone revealed by gravity modelling 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 A broken plate beneath the North Baikal rift zone revealed by gravity modelling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A broken plate beneath the North Baikal rift zone revealed by gravity modelling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-869434