TY - JOUR
AU - McKenzie,, Dan
AB - Summary New fault plane solutions, Landsat photographs, and seismic refraction records show that rapid extension is now taking place in the northern and eastern parts of the Aegean sea region. The southern part of the Aegean has also been deformed by normal faulting but is now relatively inactive. In northwestern Greece and Albania there is a band of thrusting near the western coasts adjacent to a band of normal faulting further east. The pre-Miocene geology of the islands in the Aegean closely resembles that of Greece and Turkey, yet seismic refraction shows that the crust is now only about 30 km thick beneath the southern part of the sea, compared with nearly 50 km beneath Greece and western Turkey. These observations suggest that the Aegean has been stretched by a factor of two since the Miocene. This stretching can account for the high heat flow. The sinking slab produced by subduction along the Hellenic Arc may maintain the motions, though the geometry and widespread nature of the normal faulting is not easily explained. The motions in northwestern Greece and Albania cannot be driven in the same way because no slab exists in the area. They may be maintained by blobs of cold mantle detaching from the lower half of the lithosphere, produced by a thermal instability when the lithosphere is thickened by thrusting. Hence generation and destruction of the lower part of the lithosphere may occur beneath deforming continental crust without the production of any oceanic crust. References Allen C. R. , 1975 . Geological criteria for evaluating seismicity Bull. Geol. Soc. Am. , 86 . 1041 . Google Scholar Crossref Search ADS WorldCat Alptekin O. , 1973 . Focal mechanisms of earthquakes in western Turkey and their tectonic implication , PhD thesis , Faculty of New Mexico Institute for Mining and Technology . Ambraseys N. N. , 1971 . Value of historical records of earthquakes Nature , 232 . 375 . Google Scholar Crossref Search ADS PubMed WorldCat Ambraseys N. N. , 1975 . Studies in historical seismicity and tectonics , in Geodynamics today, a review of the Earth's dynamic processes , pp. 7 – 16 , Royal Society , London. Google Scholar Google Preview OpenURL Placeholder Text WorldCat COPAC Ambraseys N. N. Tchalenko J. S. , 1972 . Seismotectonic aspects of the Gediz, Turkey, earthquake of March 1970 Geophys. J. R. astr. Soc. , 30 . 229 . Google Scholar Crossref Search ADS WorldCat Ambraseys N. Zatopek Z. , 1969 . The Mudurnu Valley, West Anatolia, Turkey, earthquake of 22 July 1967, Bull seism. Soc. Am., 59, 521. Angeliei, J., 1977. Sur revolution tectonique depuis le Miocene Supérier d'un arc insulaire Méditerranéen: L'Arc Egéen Rev. geogr. phys. Geol. dyn. , 19 . 271 . OpenURL Placeholder Text WorldCat Argand E. , 1924 . La tectonique de l'Asie C. R. Congr. Geol. Intern., 13e 1922 (Liege) , pp. 169 – 371 . Arpat, E. & Bingol, E., 1969. The rift system of western Turkey: thoughts on its development, Turkey Min. Res. Explor. Inst. Bull, 73 . 1. OpenURL Placeholder Text WorldCat Arsovsky M. , 1970 . Contemporary tectonic properties of some active zones in Jugoslavia Bulg. Acad. Sci. , 1 . 184 . OpenURL Placeholder Text WorldCat Arsovsky M. Hadzievsky D. , 1970 . Correlation between neotectonics and seismicity of Macedonia Tectonophys. , 9 . 129 . Google Scholar Crossref Search ADS WorldCat Aubouin J. , 1973 . Des tectoniques superposées et de leur signification par rapport aux modéles géophysiques: l'exemple des Dinarides; paleotectonique, tectonique, tarditectonique, néotectonique , Bull. Soc. géol. Fr. ( 7 ), 15 , 426 . Google Scholar Crossref Search ADS WorldCat Aubouin J. Bonneau M. Davidson J. Leboulenger P. Metesco S. Zambetakis A. , 1976 . Esquisse stmcturale de l'Arc égéen externes: des Dinarides aux Taurides , Bull. Soc. géol. Fr. ( 7 ), 18 , 327 . Google Scholar Crossref Search ADS WorldCat Bernoulli D. de Graciansky P. C. Monod O. , 1974 . The extension of the Lycian Nappes (SW Turkey) into the southeastern Aegean Islands Eclo. Geol. Helv. , 67 , 39 – 90 . OpenURL Placeholder Text WorldCat Bingöl E. , 1976 . Evolution géotectonique de l'Anatolie de l'ouest , Bull. Soc. Geol. Fr. ( 7 ), 18 , 431 . Google Scholar Crossref Search ADS WorldCat Boccaletti M. Horvath F. Loddo M. Mongelli F. Stegena L. , 1976 . The Tyrrhenian and Pannonian Basins: a comparison of two Mediterranean interarc basins Tectonophys. , 35 . 45 . Google Scholar Crossref Search ADS WorldCat Bott M. H. P. , 1976 . Formation of sedimentary basins of graben type by extension of the continental crust Tectonophys. , 36 . 77 . Google Scholar Crossref Search ADS WorldCat Brinkmann R. , 1976 . Geology of Turkey , F. E. Verlag , Stuttgart, Elsevier. Google Scholar Google Preview OpenURL Placeholder Text WorldCat COPAC British Petroleum , 1971 . The geological results of petroleum exploration in western Greece , Institute for Geology & Subsurface Research , Athens, No. 10. Google Scholar Google Preview OpenURL Placeholder Text WorldCat COPAC Brunn J. H. Argyriadis I. Ricou L. E. Poisson A. Marcouz J. Graciansky P. C. , 1976 . Elements majeurs de laison en tre Taurides et HeUénldes , Bull. Soc. géol. Fr. ( 7 ), 18 , 481 – 497 . Google Scholar Crossref Search ADS WorldCat Crampin S. Ucer S. B. , 1975 . The seismicity of the Marmara Sea region of Turkey Geophys. J. R. astr. Soc. , 40 . 269 . Google Scholar Crossref Search ADS WorldCat Dewey J. F. Sengor A. M. C. , 1978 . Aegean and surrounding regions: complex multi-plate and continuum tectonics in a convergent zone , Bull. Geol. Soc. Am. , in press. OpenURL Placeholder Text WorldCat Dewey J. W. , 1976 . Seismicity of Northern Anatolia Bull. seism. Soc. Am. , 66 . 843 . OpenURL Placeholder Text WorldCat Dufaure J.-J. , 1965 . Problèmes de Néotectonique dans le Péloponnèse Rev. Géogr. phys. Géol. dynam., Ser. 2 , 7 . 235 . OpenURL Placeholder Text WorldCat Engdahl E. R. Sleep N. H. Lin M.-T. , 1977 . Plate effects in North Pacific subduction zones Tectonophys. , 37 . 95 . Google Scholar Crossref Search ADS WorldCat Erinc S. Bener M. Sungur K. Göcmen K. , 1971 . 12 Mayis 1971 Burdur Depremi , IU Edebiyet Fakultesi Yayinlari, No. 1707. . Fitch T. J. Muirhead K. J. , 1974 . Depths to larger earthquakes associated with crustal loading Geophys. J. R. astr. Soc. , 37 . 285 . Google Scholar Crossref Search ADS WorldCat Fytikas M. Giuliani O. Innocenti F. Marinelli G. Mazzouli R. , 1976 . Geochronological data on recent magmatism of the Aegean Sea Tectonophys. , 31 . T29 . Google Scholar Crossref Search ADS WorldCat Gregersen S. , 1977 . P-wave travel time residuals caused by a dipping plate in the Aegean Arc in Greece, Tectonophys. , 37 . 83 . Haxby W. F. Turcotte D. L. Bird J. M. , 1976 . Thermal and mechanical evolution of the Michigan Basin Tectonophys. , 36 . 57 . Google Scholar Crossref Search ADS WorldCat Holmes A. , 1929 . Radioactivity and Earth movements Geol. Soc. Glasgow Trans. , 18 . 559 . Google Scholar Crossref Search ADS WorldCat I.F.P. , 1966 . Etude Géologique de l'Epire (Grèce nord-occidentale), two volumes. Paris Editions Technip (L'institute de Geologie et researches du sous-sol-Athenes et l'Institut Français du Petrole-Mission Grèce) . Jongsma D. , 1974 . Heat flow in the Aegean Sea Geophys. J. R. astr. Soc. , 37 . 337 . Google Scholar Crossref Search ADS WorldCat Jongsma D. , 1975 . A marine geophysical study of the Hellenic Arc , PhD thesis , Cambridge University . Jongsma D. Wissmann G. Hinz K. Gardé S. , 1977 . Seismic studies in the Cretan Sea. 2. The southern Aegean Sea: an extensional marginal basin without sea-floor spreading?‘Meteor’ Forschungsergeb-nisse Reihe C , No. 27, Geologie and Geophysik. . Karig D. , 1971 . Origin and development of the marginal basins in the western Pacific J. geophys. Res. , 76 . 2542 . Google Scholar Crossref Search ADS WorldCat Ketin I. , 1966 . 6 Ekim 1964 Manyas Deprimi Esnasinda Zeminde Meydana gelen Tansiyon Catlaklari Turk. Jeol. Kur. Büll. , 10 , 44 – 51 . OpenURL Placeholder Text WorldCat Ketin I. Roesli F. , 1953 . Makroseismische Untersuchungen über das nordwestanatoligsche Beben vom 18 März 1953 Eclo. Geol. Helv. , 46 , 187 – 208 . OpenURL Placeholder Text WorldCat Lalechos N. Savoyat Ed. 1977 . La sedimentation neogene dans le fosse Nord Egeen VI , Colloquium on the geology of the Aegean Region , Athens. Google Scholar Google Preview OpenURL Placeholder Text WorldCat COPAC Longwell C. R. , 1945 . Low angle normal faults in the Basin-and-Range Province Trans. Am. Geophys. Un. , 26 . 107 . Google Scholar Crossref Search ADS WorldCat Makris J. , 1975 . Crustal structure of the Aegean Sea and the Hellenides obtained from geophysical surveys J. Geophys. , 41 . 441 . Google Scholar Crossref Search ADS WorldCat Makris J. , 1976 . A dynamic model of the Hellenic Arc deduced from geophysical data Tectonophys. , 36 . 339 . Google Scholar Crossref Search ADS WorldCat Makris J. , 1978 . The crust and upper mantle of the Aegean region obtained from deep seismic soundings , Tectonophys. , in press. OpenURL Placeholder Text WorldCat Makris J. Vees R. , 1977 . Crustal structure of the Central Aegean Sea and the Islands of Evvia and Crete, Greece, obtained by refraction seismic experiments J. Geophys. , 42 . 329 . OpenURL Placeholder Text WorldCat Maley T. S. Johnson G. L. , 1971 . Morphology and structure of the Aegean Sea Deep-Sea Res. , 18 , 109 – 122 . OpenURL Placeholder Text WorldCat Mercier J.-L. Carey E. Phillip H. Sorel D. , 1976 . La néotectonique plio-quaternaire de l'arc égéen externe et de la mer Egée et ses relations avec séismicité : Bull. Soc. géol. Fr. ( 7 ), 18 , 159 . OpenURL Placeholder Text WorldCat Molnar P. Tapponnier P. , 1975 . Cenozoic tectonics of Asia: effects of a continental collision Science , 189 . 419 . Google Scholar Crossref Search ADS PubMed WorldCat Morelli C. Gantar G. Pisani M. , 1975 . Bathymetry, gravity and magnetism in the Strait of Sicily and in the Ionian Sea Boll. Geofis. teor. appl , 17 , N65 , 39 . OpenURL Placeholder Text WorldCat Morelli C. Pisani M. Gantar C. , 1975 . Geophysical studies in the Aegean Sea and in the Eastern Mediterranean Boll Geofis. teor. appl. , 18 . 127 . OpenURL Placeholder Text WorldCat Murawski H. , 1976 . Raumproblem und Bewegungsablauf an listrischen Flächen, insbesondere bei Tiefenstörungen N. Jb. Geol. Paläont. Mh. , 4 . 209 . OpenURL Placeholder Text WorldCat McKenzie D. P. , 1967 . Some remarks on heat flow and gravity anomalies J. geophys. Res. , 72 . 6261 . Google Scholar Crossref Search ADS WorldCat McKenzie D. P. , 1969 . Speculations on the consequences and causes of plate motions Geophys. J. R. astr. Soc. , 18 . 1 . Google Scholar Crossref Search ADS WorldCat McKenzie D. P. , 1969 . The relation between fault plane solutions for earthquakes and the directions of the principal stresses Bull. seism. Soc. Am. , 59 . 591 . OpenURL Placeholder Text WorldCat McKenzie D. P. , 1970 . The plate tectonics of the Mediterranean region Nature , 226 , 239 – 243 . Google Scholar Crossref Search ADS PubMed WorldCat McKenzie D. P. , 1972 . Active tectonics of the Mediterranean Region Geophys. J. R. astr. Soc. , 30 . 109 . Google Scholar Crossref Search ADS WorldCat McKenzie D. P. Roberts J. M. Weiss N. O. , 1974 . Convection in the Earth's mantle: towards a numerical simulation J. Fluid Mech. , 62 . 465 . Google Scholar Crossref Search ADS WorldCat Needham H. D. Le Pichon X. Melguen M. Pautot G. Renard V. Avedik F. Carré D. , 1973 . North Aegean Sea Trough, 1972 Jean Charcot Cruise 3e sess C.I.E.S.M. Athens , 22 . 138 . OpenURL Placeholder Text WorldCat Nesteroff W. D. Wezel F. C. Pautot G. , 1973 . Summary of lithostratigraphic finds and problems, Initial Reports of the Deep Sea Drilling Project , Vol. 13 , US Government Printing Office , Washingto, DC. Google Scholar Google Preview OpenURL Placeholder Text WorldCat COPAC Ninkovich D. Hayes J. D. , 1972 . Mediterranean Island Arcs and Origin of high potash volcanoes Earth planet. Sci. Lett. , 16 . 331 . Google Scholar Crossref Search ADS WorldCat North R. D. , 1977 . Seismic moment, source dimensions, and stresses associated with earthquakes in the Mediterranean and Middle East Geophys. J. R. astr. Soc. , 48 . 137 . Google Scholar Crossref Search ADS WorldCat Nowroozi A. A. , 1972 . Focal mechanisms of earthquakes of the Persian Plateau, Eastern Turkey, Caucasus and the Hindu-Kush regions Bull. seism. Soc. Am. , 61 . 317 . OpenURL Placeholder Text WorldCat Papazachos B. C. , 1973 . Distribution of seismic foci in the Mediterranean and surrounding area and its tectonic implication Geophys. J. R. astr. Soc. , 33 . 421 . Google Scholar Crossref Search ADS WorldCat Papazachos B. C. , 1976 . Seismotectonics of the Northern Aegean area Tectonophys. , 33 . 199 . Google Scholar Crossref Search ADS WorldCat Papazachos B. C. , 1976 . Evidence of crustal shortening in the Northern Aegean region Boll. Geofis. teor. appl , 19 . 66 . OpenURL Placeholder Text WorldCat Parsons B. Sclater J. G. , 1977 . An analysis of the variation of ocean floor bathymetry and heat flow with age J. geophys. Res. , 82 . 803 . Google Scholar Crossref Search ADS WorldCat Parsons B. McKenzie D. P. , 1978 . Mantle convection and the thermal structure of the plates , J. geophys. Res. , in press. OpenURL Placeholder Text WorldCat Richter C. F. , 1958 . Elementary seismology , W. H. Freeman , San Francisco. Google Scholar Google Preview OpenURL Placeholder Text WorldCat COPAC Richter F. M. , 1973 . Convection and the large scale circulation of the mantle J. geophys. Res. , 78 . 8735 . Google Scholar Crossref Search ADS WorldCat Ritsema A. R. , 1974 . Earthquake mechanisms of the Balkan region , UNDP/UNESCO report on Survey of the Seismicity of the Balkan Region , project REM/70/172. Google Scholar Google Preview OpenURL Placeholder Text WorldCat COPAC Sclater J. G. Crowe J. Anderson R. N. , 1976 . On the reliability of oceanic heat flow averages J. geophys. Res. , 81 . 2997 . Google Scholar Crossref Search ADS WorldCat Sclater J. G. Karig D. Lawver L. A. Louden K. , 1976 . Heat flow, depth and crustal thickness of the marginal basins of the South Philippine Sea J. geophys. Res. , 81 . 309 . Google Scholar Crossref Search ADS WorldCat Shirokova E. I. , 1972 . Stress pattern and probable motion in the earthquake foci of the Asia-Mediterranean seismic belt , in Elastic strain field of the Earth and mechanisms of earthquake sources , eds Balakina L. M. et al. , Seismology No. 8, Nauka Press , Moscow. Google Scholar Google Preview OpenURL Placeholder Text WorldCat COPAC Sleep N. H. , 1971 . Thermal effects of the formation of Atlantic continental margins by continental break up Geophys. J. R. astr. Soc. , 24 . 325 . Google Scholar Crossref Search ADS WorldCat Sleep N. H. Snell N. S. , 1976 . Thermal contraction and flexure of mid-continent and Atlantic marginal basins Geophys. J. R. astr. Soc. , 45 . 125 . Google Scholar Crossref Search ADS WorldCat Stauder W. , 1975 . Subduction of the Nazca plate under Peru as evidenced by focal mechanisms and by seismicity J. geophys. Res. , 80 . 1053 . Google Scholar Crossref Search ADS WorldCat Stride A. H. Belderson R. H. Kenyon N. H. , 1977 . Evolving Miogeanticlines of the Eastern Mediterranean (Hellenic, Calabrian and Cyprus outer ridges) Phil. Trans. R. Soc. Lond. A , 284 . 255 . Google Scholar Crossref Search ADS WorldCat Sulstarova E. Kociaj S. , 1969 . Tërmeti i 30 nëndorit 1967 dhe brezi sizmogjen Vlorë-Dibër Buletini , Univ. Shtetëror të Tiranës Ser . Shkencat Natyrore 2 65 (Tirana). Google Scholar Google Preview OpenURL Placeholder Text WorldCat COPAC Tapponnier P. Molnar P. , 1977 . Active faulting and tectonics in China J. geophys. Res. , 82 . 2905 . Google Scholar Crossref Search ADS WorldCat Thompson G. A. , 1959 . Gravity measurements between Hazen and Austin, Nevada: a study of Basin and Range structure J. geophys. Res. , 64 . 217 . Google Scholar Crossref Search ADS WorldCat Vilminot J.-C. Robert U. , 1974 . A propos des relations entre le volcanisme et la tectonique en mer Egee C.R. Acad. Sci. Ser. D , 278 . 2099 . OpenURL Placeholder Text WorldCat Woodside J. M. , 1975 . Evolution of the eastern Mediterranean , PhD thesis , Cambridge University . Wright D. Jongsma D. Stephen M. Williams S. Matthews D. , 1975 . Bathymetry of the eastern Mediterranean Boll. Geofis. teor, appl. , 18 . 168 . OpenURL Placeholder Text WorldCat Young J. C. , 1960 . Structure and stratigraphy in North Central Scheel Creek range , in Guidebook to the geology of the East Central Nevada , eds Boettschet J. W. Sloan W. W., Intermontane Ass. Pet. Geologists & E. Nevada Geol. Soc . Google Scholar Google Preview OpenURL Placeholder Text WorldCat COPAC This content is only available as a PDF.
TI - Active tectonics of the Alpine—Himalayan belt: the Aegean Sea and surrounding regions
JF - Geophysical Journal International
DO - 10.1111/j.1365-246X.1978.tb04759.x
DA - 1978-10-01
UR - https://www.deepdyve.com/lp/oxford-university-press/active-tectonics-of-the-alpine-himalayan-belt-the-aegean-sea-and-MR9u7Rv0jY
SP - 217
EP - 254
VL - 55
IS - 1
DP - DeepDyve
ER -