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RECHERCHE-PROJETS PORTES PAR LES MEMBRES DU CIRIR-RECHERCHE

Mise à jour / Update – 2019-Dec. 04

Liste par thèmes

TOPIC/THEME N° Country PI Title/Titre
Age of impact 8 USA Hodges Precise U/Pb dating impact-related zircons with TIMS
Age of impact/cooling rate/Impact induced hydrothermal activity 39 UK Kelley-Schwenzer Cooling and hydrothermal history of Rochechouart Impact
Age of impact/cooling rate/Impact induced hydrothermal activity 26 UK Schwenzer Ar-Ar-age measurements and details profiles below the carter floor for charactérizing cooling history and hydrothermal alteration
Crater mechanics 6 South Africa Gibson Origin of pseudotachylitic breccias
Crater mechanics 11 Germany Kenkmann Suevite formation
Crater mechanics 12 Germany Kenkmann Bottom melt bearing rocks, texture, origin and emplacement
Crater mechanics 16 Spain-Sweden Ormö-Sturkel Incidence of target environment and proximity to seawater on crater deposits
Crater mechanics 20 France Quesnel Emplacement and post-emplacement processes (possible flow directions) of crater deposits
Crater mechanics 32 USA Wittmann The nature of impact dike lithologies at Rochechouart
Crater mechanics 55 France Rochette-Sicart Aquifer characterization, relation with impact, incidence on Gallo-Roman settlement
Crater mechanics/crater morphology 31 USA Wittmann Use of metamorphic grades of basement rocks below the crater floor to characterize the modification stage
Crater mechanics/distal effects 53 France-Spain Lambert-Ormo-Sicart Mini drilling at the top of the suevite deposit at Chassenon
Crater mechanics/geochemistry 34 Belguim Goderis Geochemical and isotopic incidence of impact process on projectile materials
Crater mechanics/geochemistry 35 France Luais Geochemical and isotopic incidence of impact process on projectile materials
Crater mechanics/geochemistry 38 Belgium Goderis-Claeys High-spatial resolution petrographic, geochemical, and isotopic characterization of newly recovered Rochechouart impactites
Crater mechanics/geochemistry 59 Brazil Reimold-Hauser Understanding the physicochemical processes generating impact melt rock, impact glass in suevites, and pseudotachylitic breccia
Crater mechanics/impact metamorphism 30 USA Wittmann Nature, origin and significance of “impactoclastite” rocks at Rochechouart
Crater mechanics-distal effects/Impact induced hydrothermal activity 47 France Ramboz et al. Fluid Inclusions in impactites and mineral deposits at the periphery of the crater
Crater mechanics-Impactite classification 17 Canada Osinski Formation and emplacement of impact melt-bearing impactites and their classification.
Crater mechanics-Impactite formation 44 Canada Walton Comparison of the Crater-Fill Impactites of Two Mid-Size Complex Craters: Rochechouart, France and Steen River, Canada.
Crater mechanics-moficication stage 5 South Africa Gibson Impact fracturing in crater floor
Crater size/type-stratigraphy/cartography 19 France Quesnel Electric tomography applied to mapping lateral extension/geometry of the impactite formations and cored lithologies
Crater size/type-stratigraphy/cartography 48 France Lofi-Pezard Downhole geophysical logging in the Rochechouart impact structure
Crater size/type-stratigraphy/cartography 56 France Quesnel Gravimetric investigations at Rochechouart
Crater size/type-stratigraphy/cartography 63 USA Gulic Seismic profile(s) (to be confirmed)
Habitability of impact craters 14 UK Lee Ground truth characterisation of post-impact biological colonisation in the Rochechouart hydrothermal system
Habitability of impact craters 27 UK Schwenzer Refining existing hydrothermal models and the environmental conditions for microbial life
Habitability of impact craters 41 France Westall Habitability of hydrothermal veins formed as a consequence of the impact
Habitability of impact craters 49 Canada Sapers Habitability and evidence for past and current microbial colonization in Rochechouart Impactities
Impact induced hydrothermal activity 18 Canada Osinski Characteristics  of the Rochechouart hydrothermal system  and the subsequent alteration events
Impact induced hydrothermal activity 25 UK Schwenzer Characterizing and understanding the various alteration episodes
Impact induced hydrothermal activity 54 France Ramboz et al. Caracterizing the K metasomatism in Rochechouart structure
Impact induced hydrothermal activity/Cooling rate/Age of impact 7 Australie Jourdan Duration of the hydrothermal system associated with the Rochechouart impact event
Impact induced hydrothermal activity/Cooling rate/Age of impact 13 UK Lee Longevity of the Rochechouart hydrothermal system
Impact induced hydrothermal activity/Cooling rate/Age of impact 24 USA Kring Characteristics/longevity/modeling of the Rochechouart hydrothermal system
Inventory-Classification 50 France Duhamel-Achain Data Base-Georeferencing-Inventory of all materials
Inventory-Classification 51 France To be defined (consortium) Inventory – characterization of Target material-Lithologies-Variscan deformations and hydrothermalism
Inventory-Classification 52 International To be defined (consortium) Inventory – characterization of impactites-Nomenclature issues
Inventory-Classification 58 France To be defined (consortium) Post-impact tectonic and hydrothermalism
Magnetism and magnetic anomalies 46 France Rochette Physical characterization of the Rochechouart drill cores
Methodology/Age determination/Phase carrier issue 22 USA Schmieder Linking post-impact mineralogy with Ar-Ar and/or U/Pb results
Methodology/Age determination/Reprocessing issue 9 USA Hodges How different chronometers respond to the impact in different impact rock components
Methodology/Age determination/Reprocessing issue 23 USA Schmieder How different chronometers behave during alteration and aging
Methodology/Analytical technique/Fluid inclusion characterisation 66 France Ramboz Developping a PIXe-PiGE microprobe utilizing Rochechouart impact material for calibration and testing
Methodology/Geophysics/Radiometric signatures of impact structures 4 France Baratoux Portable K, Th and U for impact reconnaissance and mapping
Methodology/Geophysics/Remote sensing development 64 India Dhingra Compositional remote sensing testing using Rochechouart as proxy for planetary exploration (pending)
Methodology/Geophysics/Remote sensing development 65 France Lebreton Electric probe development for chemical/petrological characterization on planetary exploration rovers (pending)
Methodology/Geophysics/Remote sensing development/Crater size/type-stratigraphy/cartography 57 France Saihlhac Characterization of large and deep structures of Rochechouart impact crater from electromagnetic exploration
Methodology/Geophysics/Remote sensing development/Crater size/type-stratigraphy/cartography 62 France Munschi-Lemaire Multi-scale ground based and airborne magnetic mapping using UAVs
Methodology/Shock Barometry/Thermometry/Age of impact 10 USA Hodges U/Pb and noble gas isotopic signatures for tracing shock and temperature below impact crater
Paleo-environment-Shielding 2 Sweden Alwmark Level of  post-impact erosion
Projectile contamination 33 Belguim Goderis Distribution of projectile in and around the crater
Projectile contamination 36 France Luais Projectile identification
Projectile contamination and evaporation processes 15 France Luais Evaporation/condensation as marker of impact process
Projectile contamination/hydrothermal effect 37 France Courtin-Nomade Geochemistry and weathering pathway of some Rochechouart impactites
Projectile contamination/hydrothermal effect 45 France-USA Lorand-Humayun The faith of HSE elements at Rochechouart impact structure
Projectile identification, hydrothermal effect 61 Brazil Reimold-Hauser Characterization of the meteoritic component in the impact melt rock
Projectile identification/hydrothermal effect 68 Belgium-France Déhais-Luais Projectile signal-projectile identification and hydrothermal effects
Shock and impact metamorphism 1 Sweden Alwmark Vertical and horizontal shock barometry in the target for constraining the size and the mophology of the crater
Shock and impact metamorphism 29 USA Wittmann Quantification of indicative shock metamorphic features in impact deposits for constraining emplacement
Shock and impact metamorphism/crater mechanics 21 USA Schmieder Study of exotic phases associated with shatter cones at Rochechouart
Shock and impact metamorphism/crater mechanics 39 Germany Langenhorst Microstructure and mineralogy of pseudotachylites
Shock and impact metamorphism/crater mechanics 42 USA Fudge-Sharp Shock melting, High P polymorphs
Shock and impact metamorphism/crater mechanics 43 Sweden Lindgren Exploring for high-pressure polymorphs in the Rochechouart impactites
Shock and impact metamorphism/crater mechanics/Impact induced hydrothermal activity 3 France, Senegal Baratoux, Niang Redistribution of K, Th and U in relation with shock and post impact alteration
Shock and impact metamorphism/datation methods 60 Brazil Reimold-Hauser Shock metamorphic textures in zircon via a comprehensive comparison between shocked and unshocked zircon in different lithologies
Shock metamorphism/regional geology 67 Canada-France Flemming-Lambert Characterisation of C-bearing phases in Rochechouart impactites

Liste par spécialités/List by fields

Geochemistry
Petrology
Geophysics
Biology
Hydrogeology

Cratering mechanics
Modification stage
N° Petrology
32 The nature of impact dike lithologies at Rochechouart
6 Origin of pseudotachylitic breccias
5 Impact fracturing in crater floor
Deposit (formation and emplacment)
N° Petrology
30 Nature, origin and significance of “impactoclastite” rocks at Rochechouart
28 Formation and emplacement of impact melt-bearing impactites 
17 Formation and emplacement of impact melt-bearing impactites and their classification.
16 Incidence of target environment and proximity to seawater on crater deposits 
12 Bottom melt bearing rocks, texture, origin and emplacement
11 Suevite formation
29 Quantification of indicative shock metamorphic features in impact deposits for constraining emplacement
38 Impactite formation
44 Suevite formation
53 Impactoclastite formation-Distal effects
59 Physico-chemical processes generating impact melt rock, impact glass in suevite and in breccia dykes
N° Geophysics
20 Emplacement and post-emplacement processes (possible flow directions) of crater deposits
19 Lateral extension/geometry of the impactite formations and cored lithologies
46 Geophysics-Magnetism
48 Lateral extension/geometry of the impactite formations and cored lithologies
56 Gravimetric investigations at Rochechouart
57 Characterization of large and deep structures of Rochechouart impact crater from electromagnetic exploration
63 Seismic profile(s) (to be confirmed)
64 Compositional remote sensing testing using Rochechouart as proxy for planetary exploration (pending)
65 Electric probe development for chemical/petrological characterization on planetary exploration rovers (pending)

Projectile

Projectile faith
N° Geochemistry
34 Geochemical and isotopic incidence of impact process on projectile materials 
35 Geochemical and isotopic incidence of impact process on projectile materials 
37 Geochemistry and weathering pathway of some Rochechouart impactites
38 High-spatial resolution petrographic, geochemical, and isotopic characterization of newly recovered Rochechouart impactites
45 The faith of HSE elements at Rochechouart impact structure

Projectile identification
N° Petrology
21 Study of exotic phases associated with shatter cones at Rochechouart
61 Characterization of the meteoritic component in the impact melt rock
N° Geochemistry
36 Projectile identification
33 Distribution of projectile in and around the crater
58 Meteoritic signal characterization  
61 Characterization of the meteoritic component in the impact melt rock

IImpact induced Hydrothermal cell
N° Petrology-Geochemistry-modeling
7 Characteristics/longevity/modeling of the Rochechouart hydrothermal system
24 Characteristics/longevity/modeling of the Rochechouart hydrothermal system
25 Characteristics/longevity/modeling of the Rochechouart hydrothermal system
27 Refining existing hydrothermal models and the environmental conditions for microbial life
N° Geochemistry-mineralogy
54 Caracterizing the K metasomatism in Rochechouart structure
66 Developping a PIXe-PiGE microprobe utilizing Rochechouart impact material for calibration and testing
N° Petrology mineralogy
18 Characteristics  of the Rochechouart hydrothermal system  and the subsequent alteration events
13 Characteristics  of the Rochechouart hydrothermal system

Crater size and morphology
N° Petrology-mineralogy
1 Vertical and horizontal shock barometry in the target for constraining the size and the mophology of the crater
31 Search for a central peak or peak ring using metamorphic grades of basement rocks below the crater floor as tracer
N° Geophysics
19 Mapping- tomography
48 Comparison with Chicxulub
56 Gravimetric investigations at Rochechouart
57 Characterization of large and deep structures of Rochechouart impact crater from electromagnetic exploration

Life-Hydrothermalism
N° Geochemistry
26 Characterizing cooling history and hydrothermal alteration
27 Refining existing hydrothermal models and the environmental conditions for microbial life 
N° Petrology
14 Ground truth characterisation of post-impact biological colonisation in the Rochechouart hydrothermal system 
N° Biology
41 Habitability of hydrothermal veins formed as a consequence of the impact
49 Habitability and evidence for past and current microbial colonization in Rochechouart Impactities

Age
7 Age of Impact and duration hydrothermal system 
8 Precise U/Pb dating impact-related zircons with TIMS
13 Age of Impact and duration hydrothermal system 
26 Characterizing cooling history and hydrothermal alteration
39 Cooling and hydrothermal history of Rochechouart Impact

Methodologies/Techniques
N° Reprocessing and incidences
23 How different chronometers behave during alteration and aging
3 Redistribution of K, Th and U in relation with shock and post impact alteration
N° Remote sensing development & applications (earth and/or space)
15 Evaporation/condensation as marker of impact process 
4 Portable K, Th and U for impact reconnaissance and mapping 
62 Multi-scale ground based and airborne magnetic mapping using UAVs 
63 Seismic profile(s) (to be confirmed)
64 Compositional remote sensing testing using Rochechouart as proxy for planetary exploration (pending)
65 Electric probe development for chemical/petrological characterization on planetary exploration rovers (pending)
66 Developping a PIXe-PiGE microprobe utilizing Rochechouart impact material for calibration and testing
N° Shock barometry and thermometry
10 U/Pb and noble gas isotopic signatures for tracing shock and temperature below impact crater
N° Radiometric age carriers 
22 Linking post-impact mineralogy with Ar-Ar and/or U/Pb results
9 How different chronometers respond to the impact in different impact rock components

Shielding-erosion
N° Petrology
2 Level of  post-impact erosion

Shock and impact metamorphism
N° Petrology
39 Microstructure and mineralogy of pseudotachylites
42 Shock melting, High P polymorphs
43 High P polymorphs
60 Shock metamorphic textures in zircon via a comprehensive comparison between shocked and unshocked zircon in different lithologies 

Nomenclature-Referencing-Data bases
N° Petrology/geochemistry
50 Data Base-Georeferencing-Inventory of all materials
51 Inventory – characterization of Target material
52 Inventory – characterization of impactites-Nomenclature issues

Late events-tectonic-hydrogeology-archeology
N° Hydrogeology
55 Aquifer characterization, relation with impact, incidence on Gallo-Roman settlement

ETATS ANTERIEURS/EARLIER STAGES

CIRIR-research projects- 2017-March-2
CIRIR Research projects related to the 2017 drilling campaign in the sites of the National Natural Reserve /Projets de recherche du CIRIR en relation avec la campagne de forage 2017 dans les sites de la Réserve Naturelle Nationale.