Geophysical Research Letters · 1998 · 80 citations · 18 references
Natural SciencesEarth SciencesGeophysicsSeismologyTectonicsTectonophysicsPlate TectonicsRegional TectonicsSeismic InterpretationSubduction Zone EarthquakesSubduction Zone GeophysicsSubduction Zone TectonicsIntermediate-depth EarthquakesIntermediate-depth SeismicityMagnitude Of Subduction Zone EarthquakesSeismicity In Subduction ZonesSeismicity Patterns In Subduction ZonesSubduction Zone DeformationSubduction Zone SeismologySubduction Zone Stress Field
The Indo‐Burma region (which includes longitude 92°–96°E, latitude 20°–26°N) is a subduction zone where the Indian plate underthrusts the South‐Eastern Asian plate. But the nature of subduction is complex. I examine here the distribution of the P, T and B axes of 37 earthquakes (the time period 1977–1995, depths 0–153 km and magnitudes m b 4.8–6.8) with respect to the geometry of the Wadati‐Benioif Zone. The analysis shows that the T axes are clustered close to the down‐dip direction of the subducting slab implying a predominant down‐dip tensional stress regime within the slab, which is typical of intermediate depth seismicity of active subduction zones. These results suggest that the subduction in the Indo‐Burma region is possibly active.
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Slip-line field theory and large-scale continental tectonics
Paul Tapponnier, Péter Molnár · Nature · 1976 · 813 citations