Showing papers by "Karl Fuchs published in 1989"
United States Geological Survey1, Stanford University2, Geological Survey of Canada3, University of São Paulo4, Massachusetts Institute of Technology5, British Geological Survey6, Karlsruhe Institute of Technology7, Cochin University of Science and Technology8, Russian Academy of Sciences9, Columbia University10, University of Paris-Sud11, University of South Carolina12, Luleå University of Technology13, National Autonomous University of Mexico14, Complutense University of Madrid15
TL;DR: In this article, the authors used regional patterns of present-day tectonic stress to evaluate the forces acting on the lithosphere and to investigate intraplate seismicity, and found that most intraplate regions are characterized by a compressional stress regime; extension is limited almost entirely to thermally uplifted regions.
Abstract: Regional patterns of present-day tectonic stress can be used to evaluate the forces acting on the lithosphere and to investigate intraplate seismicity. Most intraplate regions are characterized by a compressional stress regime; extension is limited almost entirely to thermally uplifted regions. In several plates the maximum horizontal stress is subparallel to the direction of absolute plate motion, suggesting that the forces driving the plates also dominate the stress distribution in the plate interior.
587 citations
01 Jan 1989
TL;DR: A unified seismic exploration program, consisting of 345 km of deep reflection profiling, a 200 km refraction profile, an expanding spread profile and near surface high-resolution measurements, revealed a strongly differentiated crust beneath the Black Forest as discussed by the authors.
Abstract: A unified seismic exploration program, consisting of 345 km of deep reflection profiling, a 200 km refraction profile, an expanding spread profile and near surface high-resolution measurements, revealed a strongly differentiated crust beneath the Black Forest The highly reflective lower crust contains numerous horizontal and dipping reflectors at depths of 13–14 km down to the crust-mantle boundary (Moho) The Moho appears as a flat and horizontal first order discontinuity at a relatively shallow level of 25–27 km above a transparent upper mantle In the seismic model based on near-vertical and wide-angle data the lower crust consists of lamellae with an average thickness of about 100 m and velocity contrasts increasing with depth The upper crust is characterized by a discontinuous pattern of mostly dipping reflectors which are related to Hercynian overthrusting and accretion and to late-Hercyni an extensional faulting A bright spot at 95 km depth is interpreted to be due to low-velocity material The lower part of the upper crust appears as a relatively transparent zone which is also identified as a low-velocity zone situated directly above the laminated lower crust
13 citations