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<identifier>oai:HAL:hal-00411147v1</identifier>
<datestamp>2018-01-11</datestamp>
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<title lang=en>Distributed and localized faulting in extensional settings: Insight from the North Ethiopian Rift-Afar transition area</title>
<creator>Soliva, Roger</creator>
<creator>Schultz, R. A.</creator>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Geomechanics–Rock Fracture Group, Department of Geological Sciences and Engineering, University of Nevada, Reno ; Université du Québec</contributor>
<source>ISSN: 0278-7407</source>
<source>Tectonics</source>
<publisher>American Geophysical Union (AGU)</publisher>
<identifier>hal-00411147</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00411147</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00411147</source>
<source>Tectonics, American Geophysical Union (AGU), 2008, 27 (2), pp.TC2003. 〈10.1029/2007TC002148〉</source>
<identifier>DOI : 10.1029/2007TC002148</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1029/2007TC002148</relation>
<language>en</language>
<subject lang=en>North Ethiopian</subject>
<subject lang=en>Afar</subject>
<subject lang=en>rift</subject>
<subject lang=en>normal fault</subject>
<subject lang=en>statistics</subject>
<subject>[SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Extensional fault systems in the Earth's crust can exhibit two end-member geometries that we identify as distributed and localized faulting regimes. A satellite image analysis of fault populations from the Main Ethiopian Rift-Afar area reveals that the rift architecture contains these two faulting regimes. The occurrence of these regimes reveals a jump in the scale of fault segmentation and linkage. Strain localization at rift border zones exhibits particularly large-scale fault linkage and a power law size distribution. This regime replaces prior distributed fault systems, showing small-scale fault linkage and an exponential size distribution. The distributed faulting is interpreted as confined to the thick trap basalt carapace. We show that continental fault systems can develop by a combination of these two geometries, and we demonstrate how to quantitatively decipher the jump between them.</description>
<date>2008</date>
</dc>
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