Imaging the Alboran Domain using a Marine Electromagnetic Survey

Imaging the Alboran Domain using a Marine Electromagnetic Survey

AAPG European Regional Conference & Exhibition. Exploring The Mediterranean: New Concepts In An Ancient Seaway, 8-10 April 2013, Barcelona, Spain

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Main Authors: García, Xavier, Evans, Rob L., Ranero, César R., Elsenbeck, James, Jegen, Marion
Format: comunicación de congreso biblioteca
Language:English
Published: 2013-04-10
Subjects:Geophysics, Alboran tectonics, Electromagnetism,
Online Access:http://hdl.handle.net/10261/89009
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spelling dig-icm-es-10261-890092019-03-05T10:36:42Z Imaging the Alboran Domain using a Marine Electromagnetic Survey García, Xavier Evans, Rob L. Ranero, César R. Elsenbeck, James Jegen, Marion Geophysics Alboran tectonics Electromagnetism AAPG European Regional Conference & Exhibition. Exploring The Mediterranean: New Concepts In An Ancient Seaway, 8-10 April 2013, Barcelona, Spain On the Western edge of the Mediterranean, the slow convergence of the Iberian and African plates is marked by very intricate tectonic activity, marked by a combination of small-scale subduction and sub-lithospheric downwelling. Delamination or convective instability has also been proposed to have occurred beneath this domain during the past 25 My. And different geodynamic models have been proposed to explain the lithospheric structure of the arc-shaped belt (Betic and Rif orogenies) and the opening of the Alboran Basin. As part of several international projects carried out in this area, magnetotelluric (MT) methods have been used to explore the crust and upper mantle. We present results of electromagnetic studies in the Western Mediterranean, focusing specially in the recently work on the Alboran sea as part of a marine MT survey. Land MT studies have already imaged an area of low resistivity coincident with an area of low velocities without earthquake hypocenters, interpreted as asthenospheric material intruded by the lateral lithospheric tearing and breaking-off of the east-directed subducting Ligurian slab under the Alboran Domain. The marine data show complex MT response functions with strong distortion due to seafloor topography and coast effect, suggesting a fairly resistive lithosphere beneath the seafloor. The 3D marine MT inversion model shows an anomalous conductive slab towards the Eastern Alboran basin, suggesting a possible hydration of mantle material from an Eastward subducting slab. Both the land and marine MT data suggest that the most likely scenario for the opening of the Alboran Basin is related to the westward rollback of the Ligurian subducting slab Peer Reviewed 2013-12-27T10:55:41Z 2013-12-27T10:55:41Z 2013-04-10 2013-12-27T10:55:41Z comunicación de congreso http://purl.org/coar/resource_type/c_5794 AAPG European Regional Conference & Exhibition. Abstract book (2013) http://hdl.handle.net/10261/89009 en http://www.aapg.org/barcelona2013/program.cfm none
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
language English
topic Geophysics
Alboran tectonics
Electromagnetism
Geophysics
Alboran tectonics
Electromagnetism
spellingShingle Geophysics
Alboran tectonics
Electromagnetism
Geophysics
Alboran tectonics
Electromagnetism
García, Xavier
Evans, Rob L.
Ranero, César R.
Elsenbeck, James
Jegen, Marion
Imaging the Alboran Domain using a Marine Electromagnetic Survey
description AAPG European Regional Conference & Exhibition. Exploring The Mediterranean: New Concepts In An Ancient Seaway, 8-10 April 2013, Barcelona, Spain
format comunicación de congreso
topic_facet Geophysics
Alboran tectonics
Electromagnetism
author García, Xavier
Evans, Rob L.
Ranero, César R.
Elsenbeck, James
Jegen, Marion
author_facet García, Xavier
Evans, Rob L.
Ranero, César R.
Elsenbeck, James
Jegen, Marion
author_sort García, Xavier
title Imaging the Alboran Domain using a Marine Electromagnetic Survey
title_short Imaging the Alboran Domain using a Marine Electromagnetic Survey
title_full Imaging the Alboran Domain using a Marine Electromagnetic Survey
title_fullStr Imaging the Alboran Domain using a Marine Electromagnetic Survey
title_full_unstemmed Imaging the Alboran Domain using a Marine Electromagnetic Survey
title_sort imaging the alboran domain using a marine electromagnetic survey
publishDate 2013-04-10
url http://hdl.handle.net/10261/89009
work_keys_str_mv AT garciaxavier imagingthealborandomainusingamarineelectromagneticsurvey
AT evansrobl imagingthealborandomainusingamarineelectromagneticsurvey
AT ranerocesarr imagingthealborandomainusingamarineelectromagneticsurvey
AT elsenbeckjames imagingthealborandomainusingamarineelectromagneticsurvey
AT jegenmarion imagingthealborandomainusingamarineelectromagneticsurvey
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