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The hellenic arc and trench system: A key to the neotectonic evolution of the eastern mediterranean area

Identifieur interne : 000540 ( Main/Exploration ); précédent : 000539; suivant : 000541

The hellenic arc and trench system: A key to the neotectonic evolution of the eastern mediterranean area

Auteurs : Xavier Le Pichon [France] ; Jacques Angelier [France]

Source :

RBID : ISTEX:7EFA3642819907A6E90C337773C14BB814450098

Descripteurs français

English descriptors

Abstract

Abstract: Using the fault plane mechanisms of the shallow earthquakes occurring along the Hellenic arc and the extent of the intermediate seismic belt, we make a quantitative estimate of the relative motion occurring between the Hellenic arc and the adjacent sea floor. This estimate is then used to evaluate the deformation in the Aegean area and to reconstruct the pattern of motion over the Eastern Mediterranean region for the last 13 m.y. It is shown that this pattern is compatible with the neotectonic and seismicity studies in Aegea. We then discuss the dynamics of the area and propose that, since Serravallian-Tortonian time, Aegea has been spreading gravitationally in front of the southwestward advancing Turkey. The reasons for this gravitational spreading are discussed.

Url:
DOI: 10.1016/0040-1951(79)90131-8


Affiliations:


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Le document en format XML

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<term>Active tectonics</term>
<term>Aegea</term>
<term>Aegea plate</term>
<term>Aegean</term>
<term>Aegean area</term>
<term>Aegean expansion</term>
<term>Aegean lithosphere</term>
<term>Aegean region</term>
<term>Aegean regions</term>
<term>Aegean strain pattern</term>
<term>Alpine</term>
<term>Alpine belt</term>
<term>Anatolia</term>
<term>Anatolian</term>
<term>Anatolian fault</term>
<term>Angelier</term>
<term>Aubouin</term>
<term>Average dips</term>
<term>Average extension</term>
<term>Average rate</term>
<term>Azimuth</term>
<term>Basin</term>
<term>Bathymetric profile</term>
<term>Better knowledge</term>
<term>Bonneau</term>
<term>Central aegea</term>
<term>Central aegean</term>
<term>Compressional</term>
<term>Compressional events</term>
<term>Compressional tectonics</term>
<term>Compressive phase</term>
<term>Conjugate shears</term>
<term>Constant rate</term>
<term>Coordinates grid system</term>
<term>Crete</term>
<term>Crust</term>
<term>Crustal</term>
<term>Crustal thickness</term>
<term>Crustal thicknesses</term>
<term>Cyclades</term>
<term>Cyclades area</term>
<term>Deformation</term>
<term>Displacement vectors</term>
<term>Drilling project</term>
<term>Early pliocene</term>
<term>Earth planet</term>
<term>Eastern mediterranean</term>
<term>Eastern mediterranean area</term>
<term>Eastern turkey</term>
<term>Esquisse structurale</term>
<term>Extensional</term>
<term>Extensional deformation</term>
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<term>First approximation</term>
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<term>Geological data</term>
<term>Geological evidence</term>
<term>Geological evolution</term>
<term>Geological identity</term>
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<term>Government printing office</term>
<term>Grabens</term>
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<term>Hellenic trench</term>
<term>Hellenic trench system</term>
<term>Hellenides</term>
<term>Horizontal projections</term>
<term>Initial length</term>
<term>Initial reports</term>
<term>Inner wall</term>
<term>Intermediary units</term>
<term>Intermediate earthquakes</term>
<term>Intermediate seismicity</term>
<term>Internal zones</term>
<term>Ionian</term>
<term>Ionian basin</term>
<term>Ionian islands</term>
<term>Ionian trench</term>
<term>Ionian trenches</term>
<term>Jongsma</term>
<term>Kenzie</term>
<term>Large scale</term>
<term>Late miocene</term>
<term>Late pliocene</term>
<term>Levant shear</term>
<term>Linear rate</term>
<term>Lithosphere</term>
<term>Main difference</term>
<term>Mainland greece</term>
<term>Major faults</term>
<term>Major grabens</term>
<term>Makris</term>
<term>Marginal region</term>
<term>Maximum depth</term>
<term>Mediterranean</term>
<term>Mediterranean area</term>
<term>Mediterranean basins</term>
<term>Mediterranean lithosphere</term>
<term>Mercier</term>
<term>Middle miocene</term>
<term>Miocene</term>
<term>Nappe</term>
<term>Nappes</term>
<term>Neotectonic</term>
<term>Neotectonic evolution</term>
<term>Neotectonic studies</term>
<term>Neotectonique</term>
<term>Next section</term>
<term>Normal faults</term>
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<term>Northern extremity</term>
<term>Northwestern extremity</term>
<term>Oceanic</term>
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<term>Oceanic crust</term>
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<term>Plate boundary</term>
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<term>Pliny</term>
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<term>Pliocene</term>
<term>Poisson</term>
<term>Preliminary results</term>
<term>Present pattern</term>
<term>Present position</term>
<term>Previous section</term>
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<term>Quantitative evaluation</term>
<term>Relations entre</term>
<term>Relative autochtonous</term>
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<term>Ritsema</term>
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<term>Western turkey</term>
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<term>Whole aegean area</term>
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<term>Active tectonics</term>
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<term>Compressional events</term>
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<term>Drilling project</term>
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<term>Earth planet</term>
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<term>Eastern mediterranean area</term>
<term>Eastern turkey</term>
<term>Esquisse structurale</term>
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<term>Extensional deformation</term>
<term>Extensional regime</term>
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<term>Fault plane mechanisms</term>
<term>First approximation</term>
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<term>Geochronological data</term>
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<term>Geological data</term>
<term>Geological evidence</term>
<term>Geological evolution</term>
<term>Geological identity</term>
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<term>Government printing office</term>
<term>Grabens</term>
<term>Gravitational force</term>
<term>Great circle</term>
<term>Heat flow</term>
<term>Hellenic</term>
<term>Hellenic trench</term>
<term>Hellenic trench system</term>
<term>Hellenides</term>
<term>Horizontal projections</term>
<term>Initial length</term>
<term>Initial reports</term>
<term>Inner wall</term>
<term>Intermediary units</term>
<term>Intermediate earthquakes</term>
<term>Intermediate seismicity</term>
<term>Internal zones</term>
<term>Ionian</term>
<term>Ionian basin</term>
<term>Ionian islands</term>
<term>Ionian trench</term>
<term>Ionian trenches</term>
<term>Jongsma</term>
<term>Kenzie</term>
<term>Large scale</term>
<term>Late miocene</term>
<term>Late pliocene</term>
<term>Levant shear</term>
<term>Linear rate</term>
<term>Lithosphere</term>
<term>Main difference</term>
<term>Mainland greece</term>
<term>Major faults</term>
<term>Major grabens</term>
<term>Makris</term>
<term>Marginal region</term>
<term>Maximum depth</term>
<term>Mediterranean</term>
<term>Mediterranean area</term>
<term>Mediterranean basins</term>
<term>Mediterranean lithosphere</term>
<term>Mercier</term>
<term>Middle miocene</term>
<term>Miocene</term>
<term>Nappe</term>
<term>Nappes</term>
<term>Neotectonic</term>
<term>Neotectonic evolution</term>
<term>Neotectonic studies</term>
<term>Neotectonique</term>
<term>Next section</term>
<term>Normal faults</term>
<term>Northern aegean</term>
<term>Northern boundary</term>
<term>Northern extremity</term>
<term>Northwestern extremity</term>
<term>Oceanic</term>
<term>Oceanic basin</term>
<term>Oceanic crust</term>
<term>Oceanic lithosphere</term>
<term>Ophiolitic suture</term>
<term>Partial decoupling</term>
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<term>Pichon</term>
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<term>Plate boundary</term>
<term>Plate tectonics</term>
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<term>Pliny trench</term>
<term>Pliocene</term>
<term>Poisson</term>
<term>Preliminary results</term>
<term>Present pattern</term>
<term>Present position</term>
<term>Previous section</term>
<term>Pure extension</term>
<term>Quantitative evaluation</term>
<term>Relations entre</term>
<term>Relative autochtonous</term>
<term>Relative importance</term>
<term>Relative motion</term>
<term>Ritsema</term>
<term>Rotation</term>
<term>Rotation aegea</term>
<term>Santorini thira</term>
<term>Seaward side</term>
<term>Sedimentary</term>
<term>Seismic</term>
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<term>Seismicity studies</term>
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<term>Shear system</term>
<term>Significant motion</term>
<term>Slab</term>
<term>Slab underthrust</term>
<term>Small circles</term>
<term>Southeastern branch</term>
<term>Southern aegean</term>
<term>Southern continent</term>
<term>Southern turkey</term>
<term>Standard deviation</term>
<term>Strabo</term>
<term>Strabo trenches</term>
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<term>Tectonic activity</term>
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<term>Tectonics</term>
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<term>Topographic trench</term>
<term>Total amount</term>
<term>Total extension</term>
<term>Total surface</term>
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<term>Trench system</term>
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<term>Turkey</term>
<term>Unconsolidated sediments</term>
<term>Underthrusting</term>
<term>Upper miocene</term>
<term>Upper nappes</term>
<term>Western anatolia</term>
<term>Western border</term>
<term>Western crete</term>
<term>Western greece</term>
<term>Western part</term>
<term>Western turkey</term>
<term>Whole aegea</term>
<term>Whole aegean area</term>
<term>Whole area</term>
<term>Xviii</term>
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<term>Turquie</term>
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<div type="abstract" xml:lang="en">Abstract: Using the fault plane mechanisms of the shallow earthquakes occurring along the Hellenic arc and the extent of the intermediate seismic belt, we make a quantitative estimate of the relative motion occurring between the Hellenic arc and the adjacent sea floor. This estimate is then used to evaluate the deformation in the Aegean area and to reconstruct the pattern of motion over the Eastern Mediterranean region for the last 13 m.y. It is shown that this pattern is compatible with the neotectonic and seismicity studies in Aegea. We then discuss the dynamics of the area and propose that, since Serravallian-Tortonian time, Aegea has been spreading gravitationally in front of the southwestward advancing Turkey. The reasons for this gravitational spreading are discussed.</div>
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