Discontinuities in the Deep Seismic Zones Under the Japanese Arcs

Research Article| September 01, 1973 Discontinuities in the Deep Seismic Zones Under the Japanese Arcs MICHAEL J. CARR; MICHAEL J. CARR 1Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire 03755 Search for other works by this author on: GSW Google Scholar RICHARD E. STOIBER; RICHARD E. STOIBER 1Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire 03755 Search for other works by this author on: GSW Google Scholar CHARLES L. DRAKE CHARLES L. DRAKE 1Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire 03755 Search for other works by this author on: GSW Google Scholar Author and Article Information MICHAEL J. CARR 1Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire 03755 RICHARD E. STOIBER 1Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire 03755 CHARLES L. DRAKE 1Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire 03755 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1973) 84 (9): 2917–2930. https://doi.org/10.1130/0016-7606(1973)84<2917:DITDSZ>2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation MICHAEL J. CARR, RICHARD E. STOIBER, CHARLES L. DRAKE; Discontinuities in the Deep Seismic Zones Under the Japanese Arcs. GSA Bulletin 1973;; 84 (9): 2917–2930. doi: https://doi.org/10.1130/0016-7606(1973)84<2917:DITDSZ>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Intermediate and deep-focus earthquakes under the Japanese arcs delineate seismic zones in which there are distinct and abrupt discontinuities that strike transverse to the arcs. The major types of discontinuities are offsets of the seismic zone (up to 50 km) and changes in strike (up to 30°). The projection of these deep discontinuities back to the trench gives the arcs a segmented pattern which appears to be closely related to the surface geology. The geologic features that give the surface of the arcs a blocklike character and that are closely correlated to the deep discontinuities are offsets or strike changes of the axis of the trench, clusters or lines of volcanos transverse to the arc, prominent recent structures transverse to the arc, and lateral margins of the focal regions of great earthquakes. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.