thierry dumont | Joseph Fourier University (original) (raw)

Papers by thierry dumont

Research paper thumbnail of Imaging the slab structure in the Alpine region by high-resolution P-wave tomography

Research paper thumbnail of Lithospheric transdimensional ambient-noise tomography of W-Europe: implications for crustal-scale geometry of the W-Alps

Geophysical Journal International, 2021

SUMMARYA full understanding of the dynamics of mountain ranges such as the Alps requires the inte... more SUMMARYA full understanding of the dynamics of mountain ranges such as the Alps requires the integration of available geological and geophysical knowledge into a lithospheric-scale 3-D geological model. As a first stage in the construction of this geo-model, we derive a new 3-D shear wave velocity model of the Alpine region, with a spatial resolution of a few tens of kilometres, making it possible to compare with geological maps. We use four years of continuous vertical-component seismic noise records to compute noise correlations between more than 950 permanent broad-band stations complemented by ∼600 temporary stations from the AlpArray sea-land seismic network and the Cifalps and EASI linear arrays. A specific pre-processing is applied to records of ocean–bottom seismometers in the Liguro-Provençal basin to clean them from instrumental and oceanic noises. We first perform a 2-D transdimensional inversion of the traveltimes of Rayleigh waves to compute group-velocity maps from 4 t...

Research paper thumbnail of Mantle wedge anisotropy beneath the Western Alps: insights from Receiver Function analysis

Research paper thumbnail of 西部アルプスマントルウェッジの地震【Powered by NICT】

Research paper thumbnail of Synthesis of ages obtained by direct dating of Alpine External Crystalline Massifs shear zones –Insights for an Oligocene to Present underthrusting exhumation cycle

Research paper thumbnail of Upper Triassic (Rhaetian) Sequences of the Australian Northwest Shelf Recovered on Leg 122: Sea-Level Changes, Tethyan Rifting, and Overprint of Indo-Australian Breakup

Proceedings of the Ocean Drilling Program, 122 Scientific Results, 1992

Research paper thumbnail of Active and fossil mantle flows in the western Alpine region unravelled by seismic anisotropy analysis and high-resolution P wave tomography

Tectonophysics, 2018

Active and fossil mantle flows in the western Alpine region unravelled by seismic anisotropy anal... more Active and fossil mantle flows in the western Alpine region unravelled by seismic anisotropy analysis and highresolution P wave tomography.

Research paper thumbnail of Early onset of Pyrenean collision (97–90 Ma) evidenced by <scp>U–Pb</scp> dating on calcite (Provence, <scp>SE</scp> France)

Research paper thumbnail of U-Pb calcite dating  and isotopic fluid signatures of extensional fault gouges affecting the Penninic Frontal Thrust : implications for exhumation of the seismogenic zone

Research paper thumbnail of Nouvelle vision de la structure lithosphérique des Alpes par tomographie de bruit ambiant

HAL (Le Centre pour la Communication Scientifique Directe), 2021

Research paper thumbnail of Cross-propagation of the western Alpine orogen from early to late deformation stages: Evidence from the Internal Zones and implications for restoration

Earth-Science Reviews

HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re... more HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

Research paper thumbnail of Ambient‐Noise Tomography of the Ligurian‐Provence Basin Using the AlpArray Onshore‐Offshore Network: Insights for the Oceanic Domain Structure

Journal of Geophysical Research: Solid Earth

We derive a three‐dimensional shear‐wave velocity model of the Ligurian‐Provence back‐arc basin (... more We derive a three‐dimensional shear‐wave velocity model of the Ligurian‐Provence back‐arc basin (Northwestern Mediterranean Sea) using ocean‐bottom seismometers (AlpArray OBSs) and land stations from permanent and temporary seismic networks. The quality of OBS continuous records is enhanced by a specific processing that reduces instrumental and seabed‐induced noises (transients, tilt, compliance). To further improve the resolution of ambient‐noise tomography in the offshore area, we compute the Rayleigh‐wave part of the Green functions for OBS‐OBS pairs by using onshore stations as virtual sources. 2‐D group‐velocity maps and their uncertainties are computed in the 4–150 s period range by a transdimensional inversion of Rayleigh‐wave travel times. The dispersion data and their uncertainties are inverted for a probabilistic 3‐D shear‐wave velocity model that includes probability densities for Vs and for the depth of layer interfaces. The probabilistic model is refined by a linearized...

Research paper thumbnail of Late exhumation of the Alpine foreland (Digne nappe, France) constrained by low temperature thermochronology

Research paper thumbnail of Striking differences in lithospheric structure between the north- and south-western Alps: insights from receiver functions along the Cifalps profiles and a new Vs model

Striking differences in lithospheric structure between the northand south-western Alps: insights ... more Striking differences in lithospheric structure between the northand south-western Alps: insights from receiver functions along the Cifalps profiles and a new Vs model Anne Paul1, Ahmed Nouibat1, Liang Zhao2, Stefano Solarino3, Stéphane Schwartz1, Marco Malusà4, Laurent Stehly 1 , Coralie Aubert 1 , Thierry Dumont 1 , Elena Eva 3 , Stéphane Guillot 1 , Silvia Pondrelli 5 , Simone Salimbeni 5 , and AlpArray Working Group 6

Research paper thumbnail of The Deep Structure of the Alps Based on the CIFALPS Seismic Experiment: A Synthesis

Geochemistry, Geophysics, Geosystems, 2021

The European Alps are the site where classic geologic concepts such as nappe theory, continental ... more The European Alps are the site where classic geologic concepts such as nappe theory, continental subduction and slab breakoff have been first proposed. However, the deep tectonic structure of the Alps has long been poorly constrained by independent geophysical evidence. This review paper summarizes the main results of the CIFALPS passive seismic experiment, that was launched by Chinese, French and Italian scientists in the 2010s to provide new insights on the deep tectonic structure of the Alpine region. The application of a wide range of tomographic methods to the analysis of a single fossil subduction zone makes the CIFALPS experiment a potential reference case for the analysis of other orogenic belts. Major results include: (i) the first seismic evidence of European continental crust subducted into the Adriatic upper mantle, beneath the place where coesite was first recognized in continental (U)HP rocks in the Alps; (ii) evidence of a major involvement of the mantle wedge during ...

Research paper thumbnail of Erosion of the French Alpine foreland controlled by crustal thickening

Research paper thumbnail of Dajki neptuniczne w Rezerwacie Przyrody Nieozywionej Bonarka w Krakowie - swiadectwo poznokredowych ruchow tektonicznych na Wyzynie Krakowskiej - replika

NEPTUNIAN DYKES OF BONARKA - A TESTIMONY OF THE LATE CRETACEOUS TECTONIC MOVEMENTS IN THE CRACOW ... more NEPTUNIAN DYKES OF BONARKA - A TESTIMONY OF THE LATE CRETACEOUS TECTONIC MOVEMENTS IN THE CRACOW UPLAND - REPLY Summary The Late Cretaceous age of the fissures and faults at Bonarka is proved by our field and laboratory data [27]. The Gradzinski's and Ksiązkiewicz's drawings, formerly regarded as a decisive argument for Tertiary age of Bonarka faults, are in agreement with our interpretation, although these drawings were only secondary in our reasoning. The faults which cut the Jurassic basement grade upwards into the flexure, but they do not cut the top of well-bedded Lower Campanian marls. This fact justify doubts about their Miocene age. The Santonian marls which fill the fissures do locally show lamination [28, fig. 11] - contradictory to Felisiak's misinformation. Rare occurence of lamination do not exclude the sedimentary origin of fissure infilling! Similar, undoubtedly sedimentary infillings of bioerosional depressions are devoid of lamination (see discussion wit...

Research paper thumbnail of ODP Leg 122, Hole 764B - Well Logging Data

Logging data are measurements of physical properties of the formation surrounding a borehole, acq... more Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, gamma radiation, velocity, density, borehole images,…) in any hole depends on the scientific objectives and operational constraints.

Research paper thumbnail of Ammonite Biostratigraphic Correlation and Early Jurassic Sequence Stratigraphy in FranceComparisons with Some U.K. Sections

Mesozoic and Cenozoic Sequence Stratigraphy of European Basins, 1998

Page 1. Mesozoic and Cenozoic Sequence Stratigraphy of European Basins, SEPM Special Publication ... more Page 1. Mesozoic and Cenozoic Sequence Stratigraphy of European Basins, SEPM Special Publication No. 60 Copyright 1998, SEPM (Society for Sedimentary Geology), ISBN 1-56576-043-3 AMMONITE BIOSTRATIGRAPHIC ...

Research paper thumbnail of ODP Leg 122, Hole 761C - Well Logging Data

Logging data are measurements of physical properties of the formation surrounding a borehole, acq... more Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, gamma radiation, velocity, density, borehole images,…) in any hole depends on the scientific objectives and operational constraints.

Research paper thumbnail of Imaging the slab structure in the Alpine region by high-resolution P-wave tomography

Research paper thumbnail of Lithospheric transdimensional ambient-noise tomography of W-Europe: implications for crustal-scale geometry of the W-Alps

Geophysical Journal International, 2021

SUMMARYA full understanding of the dynamics of mountain ranges such as the Alps requires the inte... more SUMMARYA full understanding of the dynamics of mountain ranges such as the Alps requires the integration of available geological and geophysical knowledge into a lithospheric-scale 3-D geological model. As a first stage in the construction of this geo-model, we derive a new 3-D shear wave velocity model of the Alpine region, with a spatial resolution of a few tens of kilometres, making it possible to compare with geological maps. We use four years of continuous vertical-component seismic noise records to compute noise correlations between more than 950 permanent broad-band stations complemented by ∼600 temporary stations from the AlpArray sea-land seismic network and the Cifalps and EASI linear arrays. A specific pre-processing is applied to records of ocean–bottom seismometers in the Liguro-Provençal basin to clean them from instrumental and oceanic noises. We first perform a 2-D transdimensional inversion of the traveltimes of Rayleigh waves to compute group-velocity maps from 4 t...

Research paper thumbnail of Mantle wedge anisotropy beneath the Western Alps: insights from Receiver Function analysis

Research paper thumbnail of 西部アルプスマントルウェッジの地震【Powered by NICT】

Research paper thumbnail of Synthesis of ages obtained by direct dating of Alpine External Crystalline Massifs shear zones –Insights for an Oligocene to Present underthrusting exhumation cycle

Research paper thumbnail of Upper Triassic (Rhaetian) Sequences of the Australian Northwest Shelf Recovered on Leg 122: Sea-Level Changes, Tethyan Rifting, and Overprint of Indo-Australian Breakup

Proceedings of the Ocean Drilling Program, 122 Scientific Results, 1992

Research paper thumbnail of Active and fossil mantle flows in the western Alpine region unravelled by seismic anisotropy analysis and high-resolution P wave tomography

Tectonophysics, 2018

Active and fossil mantle flows in the western Alpine region unravelled by seismic anisotropy anal... more Active and fossil mantle flows in the western Alpine region unravelled by seismic anisotropy analysis and highresolution P wave tomography.

Research paper thumbnail of Early onset of Pyrenean collision (97–90 Ma) evidenced by <scp>U–Pb</scp> dating on calcite (Provence, <scp>SE</scp> France)

Research paper thumbnail of U-Pb calcite dating  and isotopic fluid signatures of extensional fault gouges affecting the Penninic Frontal Thrust : implications for exhumation of the seismogenic zone

Research paper thumbnail of Nouvelle vision de la structure lithosphérique des Alpes par tomographie de bruit ambiant

HAL (Le Centre pour la Communication Scientifique Directe), 2021

Research paper thumbnail of Cross-propagation of the western Alpine orogen from early to late deformation stages: Evidence from the Internal Zones and implications for restoration

Earth-Science Reviews

HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re... more HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

Research paper thumbnail of Ambient‐Noise Tomography of the Ligurian‐Provence Basin Using the AlpArray Onshore‐Offshore Network: Insights for the Oceanic Domain Structure

Journal of Geophysical Research: Solid Earth

We derive a three‐dimensional shear‐wave velocity model of the Ligurian‐Provence back‐arc basin (... more We derive a three‐dimensional shear‐wave velocity model of the Ligurian‐Provence back‐arc basin (Northwestern Mediterranean Sea) using ocean‐bottom seismometers (AlpArray OBSs) and land stations from permanent and temporary seismic networks. The quality of OBS continuous records is enhanced by a specific processing that reduces instrumental and seabed‐induced noises (transients, tilt, compliance). To further improve the resolution of ambient‐noise tomography in the offshore area, we compute the Rayleigh‐wave part of the Green functions for OBS‐OBS pairs by using onshore stations as virtual sources. 2‐D group‐velocity maps and their uncertainties are computed in the 4–150 s period range by a transdimensional inversion of Rayleigh‐wave travel times. The dispersion data and their uncertainties are inverted for a probabilistic 3‐D shear‐wave velocity model that includes probability densities for Vs and for the depth of layer interfaces. The probabilistic model is refined by a linearized...

Research paper thumbnail of Late exhumation of the Alpine foreland (Digne nappe, France) constrained by low temperature thermochronology

Research paper thumbnail of Striking differences in lithospheric structure between the north- and south-western Alps: insights from receiver functions along the Cifalps profiles and a new Vs model

Striking differences in lithospheric structure between the northand south-western Alps: insights ... more Striking differences in lithospheric structure between the northand south-western Alps: insights from receiver functions along the Cifalps profiles and a new Vs model Anne Paul1, Ahmed Nouibat1, Liang Zhao2, Stefano Solarino3, Stéphane Schwartz1, Marco Malusà4, Laurent Stehly 1 , Coralie Aubert 1 , Thierry Dumont 1 , Elena Eva 3 , Stéphane Guillot 1 , Silvia Pondrelli 5 , Simone Salimbeni 5 , and AlpArray Working Group 6

Research paper thumbnail of The Deep Structure of the Alps Based on the CIFALPS Seismic Experiment: A Synthesis

Geochemistry, Geophysics, Geosystems, 2021

The European Alps are the site where classic geologic concepts such as nappe theory, continental ... more The European Alps are the site where classic geologic concepts such as nappe theory, continental subduction and slab breakoff have been first proposed. However, the deep tectonic structure of the Alps has long been poorly constrained by independent geophysical evidence. This review paper summarizes the main results of the CIFALPS passive seismic experiment, that was launched by Chinese, French and Italian scientists in the 2010s to provide new insights on the deep tectonic structure of the Alpine region. The application of a wide range of tomographic methods to the analysis of a single fossil subduction zone makes the CIFALPS experiment a potential reference case for the analysis of other orogenic belts. Major results include: (i) the first seismic evidence of European continental crust subducted into the Adriatic upper mantle, beneath the place where coesite was first recognized in continental (U)HP rocks in the Alps; (ii) evidence of a major involvement of the mantle wedge during ...

Research paper thumbnail of Erosion of the French Alpine foreland controlled by crustal thickening

Research paper thumbnail of Dajki neptuniczne w Rezerwacie Przyrody Nieozywionej Bonarka w Krakowie - swiadectwo poznokredowych ruchow tektonicznych na Wyzynie Krakowskiej - replika

NEPTUNIAN DYKES OF BONARKA - A TESTIMONY OF THE LATE CRETACEOUS TECTONIC MOVEMENTS IN THE CRACOW ... more NEPTUNIAN DYKES OF BONARKA - A TESTIMONY OF THE LATE CRETACEOUS TECTONIC MOVEMENTS IN THE CRACOW UPLAND - REPLY Summary The Late Cretaceous age of the fissures and faults at Bonarka is proved by our field and laboratory data [27]. The Gradzinski's and Ksiązkiewicz's drawings, formerly regarded as a decisive argument for Tertiary age of Bonarka faults, are in agreement with our interpretation, although these drawings were only secondary in our reasoning. The faults which cut the Jurassic basement grade upwards into the flexure, but they do not cut the top of well-bedded Lower Campanian marls. This fact justify doubts about their Miocene age. The Santonian marls which fill the fissures do locally show lamination [28, fig. 11] - contradictory to Felisiak's misinformation. Rare occurence of lamination do not exclude the sedimentary origin of fissure infilling! Similar, undoubtedly sedimentary infillings of bioerosional depressions are devoid of lamination (see discussion wit...

Research paper thumbnail of ODP Leg 122, Hole 764B - Well Logging Data

Logging data are measurements of physical properties of the formation surrounding a borehole, acq... more Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, gamma radiation, velocity, density, borehole images,…) in any hole depends on the scientific objectives and operational constraints.

Research paper thumbnail of Ammonite Biostratigraphic Correlation and Early Jurassic Sequence Stratigraphy in FranceComparisons with Some U.K. Sections

Mesozoic and Cenozoic Sequence Stratigraphy of European Basins, 1998

Page 1. Mesozoic and Cenozoic Sequence Stratigraphy of European Basins, SEPM Special Publication ... more Page 1. Mesozoic and Cenozoic Sequence Stratigraphy of European Basins, SEPM Special Publication No. 60 Copyright 1998, SEPM (Society for Sedimentary Geology), ISBN 1-56576-043-3 AMMONITE BIOSTRATIGRAPHIC ...

Research paper thumbnail of ODP Leg 122, Hole 761C - Well Logging Data

Logging data are measurements of physical properties of the formation surrounding a borehole, acq... more Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, gamma radiation, velocity, density, borehole images,…) in any hole depends on the scientific objectives and operational constraints.