Heat flow in the tectonic provinces crossed by the southern segment of the European Geotraverse

Vedova, Bruno Della; Lucazeau, Francis; Pasquale, V.; Pellis, G.; Verdoya, Massimo

doi:10.1016/0040-1951(94)00217-w

Cited by 68 publications

(27 citation statements)

References 15 publications

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“…Heat flow measurements are missing from the study area. However, the high heat flow in the surrounding zones of the Alboran Sea, the Provençal Basin, and the Balearic Islands (Foucher et al 1988;Fernández and Cabal 1992;DellaVedova et al 1995;Polyak et al 1996), exceeding 140 mW m -2 in the abyssal plains east of the AlgeroBalearic basin, are consistent with a thermal regime of a relatively young oceanic crust in which the significant variability of the subsurface temperature distribution has been ascribed not only to the high thermal conductivity of salt intrusions, but also to possible hydrothermal circulation in the young, fractured oceanic crust by Hutchison et al (1985).…”

Section: Halokinesismentioning

confidence: 97%

Morphogenesis of the SW Balearic continental slope and adjacent abyssal plain, Western Mediterranean Sea

Camerlenghi

Accettella

Costa

et al. 2008

Int J Earth Sci (Geol Rundsch)

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We present the seafloor morphology and shallow seismic structure of the continental slope south-east of the Balearic promontory and of the adjacent Algero-Balearic abyssal plain from multibeam and chirp sonar data. The main purpose of this research was to identify the sediment pathways from the Balearic promontory to the Algero-Balearic deep basin from the Early Pliocene to the Present. The morphology of the southern Balearic margin is controlled by a SW-NE structural trend, whose main expressions are the Emile Baudot Escarpment transform fault, and a newly discovered WSW-ENE trend that affects the SW end of the escarpment and the abyssal plain. We relate the two structural trends to right-lateral simple shear as a consequence of the Miocene westward migration of the Gibraltar Arc. Newly discovered steep and narrow volcanic ridges were probably enabled to grow by local transtension along the transform margin. Abyssal plain knolls and seahills relate to the subsurface deformation of early stage halokinetic structures such as salt rollers, salt anticlines, and salt pillows. The limited thickness of the overburden and the limited amount of deformation in the deep basin prevent the formation of more mature halokinetic structures such as diapirs, salt walls, bulbs, and salt extrusions. The uppermost sediment cover is affected by a dense pattern of sub-vertical small throw normal faults resulting from extensional stress induced in the overburden by subsurface salt deformation structures. Shallow gas seismic character and the possible presence of an active polygonal fault system suggest upward fluid migration and fluid and sediment expulsion at the seafloor through a probable mud volcano and other piercement structures. One large debris flow deposit, named Formentera Debris Flow, has been identified on the lower slope and rise of the south Formentera margin. Based on current observations, we hypothesize that the landslide originating the Formentera Debris Flow occurred in the Holocene, perhaps in historical times.

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Section: Halokinesismentioning

confidence: 97%

Morphogenesis of the SW Balearic continental slope and adjacent abyssal plain, Western Mediterranean Sea

Camerlenghi

Accettella

Costa

et al. 2008

Int J Earth Sci (Geol Rundsch)

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“…Several published and unpublished surface heat-flow density (HFD) data sets were reviewed by Della Vedova et al (1995) to obtain a HFD estimate for the main tectonic provinces crossed by the European Geotraverse Southern Segment (EGT-S) and to produce a regional HFD map for this area. The surface HFD data are strongly related to the complex evolution of the Mediterranean region.…”

Section: Gravity Analysis and Modellingmentioning

confidence: 99%

Deep structure and crustal configuration of the Jeffara basin (Southern Tunisia) based on regional gravity, seismic reflection and borehole data: How to explain a gravity maximum within a large sedimentary basin?

Gabtni

Jallouli

Mickus

et al. 2009

Journal of Geodynamics

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“…6a). Values corrected for thermal blanketing are mostly above 100 mW/m 2 and reach 140-160 mW/m 2 in the axial part of the basin, based on the recent EGT heat flow compilation (European Geotraverse, Della Vedova et al, 1995). High heat flow anomaly in the basin is a consequence of the Oligocene rifting and the following short period of oceanic accretion.…”

Section: Thermal Variable Crust Density and Variable Sediment Densitmentioning

confidence: 99%

Constraints on Moho depth and crustal thickness in the Liguro-Provençal basin from a 3D gravity inversion: geodynamic implications

Chamot‐Rooke

Gaulier

Jestin

1999

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Ce rapport prŽsente un travail commun avec le Laboratoire de gŽodynamique de lÕƒcole normale supŽrieure (ENS). Ce travail doit •tre resituŽ dans son contexte : lÕŽtude rŽgionale du golfe du Lion a ŽtŽ possible dans le cadre du projet europŽen Integrated Basin Studies. Le dŽveloppement du code dÕinversion 3D avait fait lÕobjet de conventions avec lÕENS pendant les annŽes prŽcŽdentes. La mise en Ïuvre dÕune telle inversion est dŽsormais possible ˆ lÕIFP. Il nÕy a pas dÕinterface pour ce calculateur. LÕaide des coll•gues de lÕENS est souhaitable pour la mise en forme des donnŽes.Il a paru opportun, compte tenu des dŽlais imprŽvus de publication du volume du BSGL* pour lequel cet article a ŽtŽ acceptŽ, de montrer lÕexistence et les potentialitŽs de cette mŽthode. Il est vraisemblable quÕelle pourra •tre un apport significatif ˆ lÕŽtude des marges passives et plus particuli•rement dans le cas des Žtudes concernant lÕoffshore profond. Elle a dŽjˆ retenu lÕattention de plusieurs coll•gues de lÕindustrie pŽtroli•re. CONSTRAINTS ON MOHO DEPTH AND CRUSTAL THICKNESS IN THE LIGURO-PROVEN‚AL BASIN FROM A 3D GRAVITY INVERSION: GEODYNAMIC IMPLICATIONS3D gravity modelling is combined with seismic refraction and reflection data to constrain a new Moho depth map in the LiguroProven•al Basin (Western Mediterranean Sea). At seismically controlled points, the misfit between the gravimetric solution and the seismic data is about 2 km for a range of Moho depth between 12 km (deep basin) and 30 km (mainlands). The oceanic crust thickness in the deep basin (5 km En este informe se presenta un trabajo comoen llevado a cabo conjuntamente con el Laboratorio de geodin ‡mica de la Escuela Normal Superior (ENS). Este trabajo se debe restituir en su contexto propio : el estudio regional del Golfo de Le-n ha resultado posible en el marco del proyecto europeo Integrated Basin Estudies. El desarrollo del c-digo de inversi-n 3D fue objeto de convenciones con la ENS durante los a-os precedentes. La implementaci-n de semejante inversi-n resulta ahora posible por parte del IFP. No existe ningoen interfaz para este calculador. La ayuda de los colegas de la ENS es deseable para la conformaci-n de los datos.Habida cuenta de los plazos imprevistos para la publicaci-n del volumen del BSGL, para el cual se ha aceptado este art'culo, ha parecido oportuno mostrar su existencia, as' como las potencialidades de este mŽtodo. Parece veros'mil que podr ‡ de este modo, constituir una aportaci-n significativa para el estudio de los m ‡rgenes pasivos y, en particular, en el caso de los estudios costafuera profundos. Su contenido ha sido objeto de atenci-n por parte de varios colegas de la industria petrolera.

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Heat flow in the tectonic provinces crossed by the southern segment of the European Geotraverse

Cited by 68 publications

References 15 publications

Morphogenesis of the SW Balearic continental slope and adjacent abyssal plain, Western Mediterranean Sea

Morphogenesis of the SW Balearic continental slope and adjacent abyssal plain, Western Mediterranean Sea

Deep structure and crustal configuration of the Jeffara basin (Southern Tunisia) based on regional gravity, seismic reflection and borehole data: How to explain a gravity maximum within a large sedimentary basin?

Constraints on Moho depth and crustal thickness in the Liguro-Provençal basin from a 3D gravity inversion: geodynamic implications

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