Mathematics – Logic
Scientific paper
Apr 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991geoji.105...15m&link_type=abstract
(European Geophysical Society, Symposium on Deep Seismic Reflection Profiling, Barcelona, Spain, Mar. 14, 15, 1989, Reports. A91
Mathematics
Logic
23
Continents, Earth Crust, Geodynamics, Seismic Waves, Seismology, Tectonics, Geological Faults, Lithosphere, Mountains, Wave Reflection
Scientific paper
Reflection seismics in compressional belts has revealed the structure of crustal shortening and thickening processes, showing complex patterns of indentation and interfingering of colliding crusts and subcrustal lithospheres. Generally, in the upper crust large zones of detachments develop, often showing duplexes and 'crocodile' structures. The lower crust from zones of active collision (e.g. Alps, Pyrenees) is characterized by strongly dipping reflections. The base of the crust with the Moho must be continuously equilibrating after orogenic collapse as areas of former continental collision exhibit flat Mohos and subhorizontal reflections. The depth to the Moho increases during collision and decreases after the onset of post-orogenic extension, until finally the crustal root disappears completely together with the erosion of the mountains. Processes, active during continental collisions and orogenic collapse, create distinct structures which are imaged by reflection seismic profiling. Examples are shown and discussed.
Meissner Rolf
Sadowiak Petra
Wever Th.
No associations
LandOfFree
Continental collisions and seismic signature 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 Continental collisions and seismic signature, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continental collisions and seismic signature will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1791289