%0 Journal Article %1 stern_mcbride:1998 %A Stern, T. A. %A McBride, J. H. %D 1998 %J Tectonophysics %K geophysics seismics %N 1-4 %P 63--78 %R 10.1016/S0040-1951(97)00255-2 %T Seismic exploration of continental strike-slip zones %U http://dx.doi.org/10.1016/S0040-1951(97)00255-2 %V 286 %X Seismic exploration of both Palaeozoic and active strike-slip zones shows strike-slip faults that penetrate all or most of the crust. Offsets on the Moho are evident, particularly at young and active zones with a component of compression, such as the Alpine Fault of New Zealand where a change in crustal thickness of about 20 km is observed. Moho offsets for the old Palaeozoic strike-slip zones are usually much less prominent. Careful migration of crustal seismic reflection data from some of these zones shows that instead of sharp offsets, the Moho structure consists of a localized keel-type crustal thickening of a few kilometres in amplitude and occurs over a zone approximately 10 km wide. The large Moho offsets of young strike-slip zones may in some cases partially decay with time. Active strike-slip zones are becoming an important focus of study, but seismic exploration is hampered by complex near-surface geology, 3D structure and the difficulty of imaging steeply dipping structure in the subsurface. In order to meet this challenge, a wide range of seismic techniques is now being deployed. These include wide-angle seismic reflection, refraction, P-wave delays and the study of guided S-waves. Results from California give geophysical images of vertical strike-slip faults that penetrate to the Moho. In contrast, the Alpine Fault of New Zealand appears to be a surface manifestation of an inclined (\~40 deg) ramp, extending down to the lower crust and along which uplift and exhumation of the continental crust, and possibly strike-slip motion, is taking place.

@article{stern_mcbride:1998, abstract = {Seismic exploration of both Palaeozoic and active strike-slip zones shows strike-slip faults that penetrate all or most of the crust. Offsets on the Moho are evident, particularly at young and active zones with a component of compression, such as the Alpine Fault of New Zealand where a change in crustal thickness of about 20 km is observed. Moho offsets for the old Palaeozoic strike-slip zones are usually much less prominent. Careful migration of crustal seismic reflection data from some of these zones shows that instead of sharp offsets, the Moho structure consists of a localized keel-type crustal thickening of a few kilometres in amplitude and occurs over a zone approximately 10 km wide. The large Moho offsets of young strike-slip zones may in some cases partially decay with time. Active strike-slip zones are becoming an important focus of study, but seismic exploration is hampered by complex near-surface geology, 3D structure and the difficulty of imaging steeply dipping structure in the subsurface. In order to meet this challenge, a wide range of seismic techniques is now being deployed. These include wide-angle seismic reflection, refraction, P-wave delays and the study of guided S-waves. Results from California give geophysical images of vertical strike-slip faults that penetrate to the Moho. In contrast, the Alpine Fault of New Zealand appears to be a surface manifestation of an inclined (\~{}40 deg) ramp, extending down to the lower crust and along which uplift and exhumation of the continental crust, and possibly strike-slip motion, is taking place.}, added-at = {2012-09-01T13:08:21.000+0200}, author = {Stern, T. A. and McBride, J. H.}, biburl = {https://www.bibsonomy.org/bibtex/2414180668fb034ecbbdd6b7b8c39702e/nilsma}, day = 10, doi = {10.1016/S0040-1951(97)00255-2}, interhash = {a505630d1f7bc496ccfac6e08308cf05}, intrahash = {414180668fb034ecbbdd6b7b8c39702e}, issn = {00401951}, journal = {Tectonophysics}, keywords = {geophysics seismics}, month = mar, number = {1-4}, pages = {63--78}, timestamp = {2021-02-09T13:27:42.000+0100}, title = {Seismic exploration of continental strike-slip zones}, url = {http://dx.doi.org/10.1016/S0040-1951(97)00255-2}, volume = 286, year = 1998 }