Zoom<\/a><\/p>\nSupervisors:<\/strong>
\nProfessor Hans Thybo, Professor Irina Artemieva, Professor Abdolreza Ghods<\/p>\nAssessment committee:<\/strong>
\nProfessor Valerie Maupin, University of Oslo \u2013 Norway
\nProfessor Wolfgang Rabbel, Kiel University \u2013 Germany
\nProfessor Klaus Mosegaard (chair), Niels Bohr Institute, UCPH<\/p>\nAbstract<\/strong>
\nThe Central Tethys realm including Anatolia, Caucuses and Iranian plateau is one of the most complex geodynamic settings within the Alpine-Himalayan belt. To investigate the\u00a0tectonics of this region, we estimated the depth to magnetic basement (DMB), as a proxy for\u00a0the shape of sedimentary basins, and average crustal magnetic susceptibility (ACMS) by\u00a0applying the fractal spectral method to the aeromagnetic data. Magnetic data is sensitive to\u00a0the presence of iron-rich minerals in oceanic fragments and mafic intrusions, hidden beneath\u00a0sedimentary sequences or overprinted by younger tectono-magmatic events. Furthermore, a\u00a0seismically constrained 2D density-susceptibility model along Zagros is developed to study\u00a0depth extension of structures.
\nBy comparing the DMB with ACMS, we conclude:
\nHigh ACMS indicates steep and gentle lineaments that correlate with known occurrences\u00a0of Magmatic-Ophiolite Arcs (MOA) and low ACMS coincides with known sedimentary\u00a0basins in the study region such as Zagros. We identify hitherto unknown parallel MOAs below\u00a0the sedimentary cover in eastern Iran and the SE part of Urima-Dokhtar Magmatic Arc\u00a0(UDMA). The result allows for estimation of the dip of paleo-subduction zones.
\nKnown magmatic arcs (Pontides and Urima-Dokhtar) have high-intensity heterogeneous\u00a0ACMS. We identify a 450 km-long buried (DMB >6 km) magmatic arc or trapped oceanic\u00a0crust along the western margin of the Kir\u015feh\u0131r massif from a strong ACMS anomaly. Large,\u00a0partially buried magmatic bodies form the Caucasus LIP at the Transcaucasus and Lesser\u00a0Caucasus and in NW Iran. ACMS anomalies are weak at tectonic boundaries and faults.
\nHowever, the Cyprus subduction zone has a strong magnetic signature which extends ca. 500\u00a0km into the Arabian plate.
\nWe derive a 2D crustal-scale density-susceptibility model of the NW Iranian plateau along\u00a0a 500 km long seismic profile across major tectonic provinces of Iran from the Arabian plate\u00a0to the South Caspian Basin (SCB). The seismic P-wave receiver function section is used to\u00a0constrain major crustal boundaries in the density model.
\nWe demonstrate that the Main Zagros Reverse Fault (MZRF), between the Arabian and\u00a0the overriding Central Iran crust, dips at\u00a0\u02dc13\u00b0 angle towards NE and extends to a depth of\u00a0\u02dc40 km. The trace of MZRF suggests\u00a0\u02dc150 km underthrusting of the Arabian plate beneath\u00a0Central Iran. We identify a new crustal-scale suture beneath the Tarom valley separating the\u00a0South Caspian Basin curst from the Central Iran. The high density lower crust beneath Alborz\u00a0and Zagros might possibly be related to partial eclogitization of the crustal root at depths\u00a0deeper than\u00a0\u02dc\u00a040 km.<\/p>\nA digital version of the PhD thesis can be obtained from the PhD secretary\u00a0phd@ign.ku.dk<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"Vahid Teknik defends his thesis, Crustal structure in the central Tethys realm Zoom Supervisors: Professor Hans Thybo, Professor Irina Artemieva, Professor Abdolreza Ghods Assessment committee: Professor Valerie Maupin, University of Oslo \u2013 Norway Professor Wolfgang Rabbel, Kiel University \u2013 Germany Professor Klaus Mosegaard (chair), Niels Bohr Institute, UCPH Abstract The Central Tethys realm including Anatolia, […]<\/p>\n","protected":false},"author":0,"featured_media":152213,"template":"","class_list":["post-152212","event","type-event","status-publish","has-post-thumbnail","hentry","event_category-phd-thesis-defense"],"acf":[],"aioseo_notices":[],"yoast_head":"\n
Vahid Teknik defends his thesis at Geology Section, IGN<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/uniavisen.dk\/en\/event\/vahid-teknik-defends-his-thesis-at-geology-section-ign\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Vahid Teknik defends his thesis at Geology Section, IGN\" \/>\n<meta property=\"og:description\" content=\"Vahid Teknik defends his thesis, Crustal structure in the central Tethys realm Zoom Supervisors: Professor Hans Thybo, Professor Irina Artemieva, Professor Abdolreza Ghods Assessment committee: Professor Valerie Maupin, University of Oslo \u2013 Norway Professor Wolfgang Rabbel, Kiel University \u2013 Germany Professor Klaus Mosegaard (chair), Niels Bohr Institute, UCPH Abstract The Central Tethys realm including Anatolia, […]\" 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