IODP/ICDP-France News Mai 2018

DeadlinesDeadlines

Soumettre un Projet de forage IODP :

Infos : https://www.iodp.org/proposals/submitting-proposalsDate limite pour candidater : 1 octobre 2018

Soumettre un Projet de forage ICDP :

Infos : https://www.icdp-online.org/proposals/prepare-and-submit-a-proposal/Date limite pour candidater : 15 janvier 2019

ECORD Summer Schools 2018:

Contact : hkinkel@geomar.deLien internet : http://www.ecord.org/education/summer-schools/

Petrophysics Summer School, Leicester, UKDates: 30 June-2 July 2018 Infos: https://iodp.rocks/petrophysics-summer-school/

15th Urbino Summer School in Paleoclimatology, Urbino, ItalyDates: 11-27 July 2018Infos: http://www.urbinossp.it/

Sub-seafloor fluid transport and gas hydrate dynamics, Bremen, GermanyDates: 3-14 September 2018 Date limite pour s’inscrire : 25 mai 2018Infos: http://www.iodp-france.org/pro/wp-content/uploads/2018/04/Flyer-Bremen_SumSchool-2018.pdf

ECORD invites you to submit mission-specific platform (MSP) proposal !

7 expéditions ont déjà été conduites par ECORD avec succès. Après un premier plan opérationel MSP défini par l’ECORD Facility Board (EFB) pour la période 2014-2018 incluant pas moins de 5 expéditions (347 Baltic Sea Paleoenvironment (2013-2014), 357 Atlantis Massif: Serpentinization and Life (2015), 364 Chicx-ulub Impact Crater (2016), 381 Corinth Active Rift Development (2017) and 377 Arctic Paleoceanography

Deadlines / Keydates / ECORD News

IODP

ECORDnews

IODP

IODP

(ACEX-2; 2018), l’EFB va définir un second plan opérationel MSP pour la période 2019-2023 basé sur l’ex-cellence scientifique des projets de forage et surtout sur le budget annuel disponible pour les expéditions. d’ici 2023, l’EFB espère pouvoir considérer 1 mission moyennement ou très coûteuse et 3 expéditions peu couteuses. Des réserves provisoires pour 2020 et 2022 ont été effectuées pour les systèmes de forage MeBo70 / 200 et RockDrill-II pour répondre à toute demande de proposition. Les opérations avec ces sys-tèmes, ainsi que les carottages à piston peuvent faire partie d’un projet d’expédition peu coûteux où le navire pourrait être une contribution In-Kind. NOUS ENCOURAGEONS VIVEMENT LA (RE)SOUMISSION DES PROJETS MSP auprès du Science Sup-port Office (dates limites de soumission : 1er avril et 1er octobre de chaque année) pour une évaluation plus approfondie par le SEP (Science Evaluation Panel) et une éventuelle prise en compte lors de la prochaine réunion du EFB.

Sponsor ECORD : Inviter un DLP (Distinguished Lecturer Pro-gram) au sein de votre étbalissement pour une conférence à thème : Bridget Wade, University College London: “Biotic response to Cenozoic climate perturbations: new insights from ocean drilling”. Mark Alex-ander Lever, ETH Zurich : “ Controls on microbial population size and community structure in subseafloor environments”. Gretchen Früh–Green, ETH Zurich: “ Serpentinization and life: Insights through ocean drill-ing”. Marianne Conin, University of Lorraine, Nancy : “ Thrilling advances in the understanding the up-dip limit of subduction zones and the associated risks of tsunami and earthquakes through scientific drillings”. Liens internet : http://www.ecord.org/education/dlp/

} ESSAC spring meeting, May 28-30, Toulouse , France } JOIDES Resolution Facility Board, May 15-16 2018, Alexandria VA, USA } Science Evaluation Panel, June 26-28 2018, Potsdam, Germany } Environmental Protection and Safety Panel, Sept 5-6 2018, College Station TX, USA } IODP Forum, Sept 19-21 2018, Goa, India } ESSAC/ECORD Council meeting (fall meeting), November 6-8 2018, La Haye, Holland } Science Evaluation Panel, January 8-10 2019, La Jolla CA, USA } ECORD Facility Board, March 21-22 2019, Bremen, Germany } Chikyu IODP Board, June 11-12 2019, Kobe, Japan

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IODP expeditions

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Actualités FRANCE

Expéditions à venir et scientifiques français sélectionnés : • Expédition 376 – Brothers Arc Flux. 5 mai (5 juillet 2018)Lien internet : http://iodp.tamu.edu/scienceops/expeditions/brothers_arc_flux.html

• Expédition 378 – South Pacific Paleogene Climate (14 October to 14 December 2018)Lien internet : http://iodp.tamu.edu/scienceops/expeditions/south_pacific_paleogene_climate.html

• Expédition 379 – Amundsen Sea West Antarctic Ice Sheet History (18 January to 20 March 2019)Lien internet : http://iodp.tamu.edu/scienceops/expeditions/amundsen_sea_ice_sheet_history.html

´Margot Courtillat (Paleontologist - foraminifers) - CEFREM, Perpignan

Appel d’offres au fil de l’eau “Soutien Financier Post-Cam-pagne” IODP-France

Cet appel d’offres est destiné spécifiquement au financement de l’exploitation des données et échantillons prélevés au cours des expéditions de forage scientifique IODP. Les projets portant sur des expéditions ve-nant de s’achever seront financés en priorité. Les demandes portant sur l’exploitation d’expéditions anci-ennes (programmes DSDP, ODP et IODP ≥ 2 ans) seront également considérées.

“Sample Request” = valorisation des expéditions anciennes

Vous pouvez à tout moment faire une demande de rééchantillonage auprès des 3 carothèques IODP afin d’initier de nouvelles études sur des expéditions passées. Une aide financière pour réaliser votre projet scientifique pourra vous être attribuée par le Bureau IODP-France dans le cadre d’un “Soutien financier Post-Cruise - campagnes anciennes”, ceci après évaluation de votre projet par le comité IODP-France.

Lien “sample access” : https://www.iodp.org/resources/access-data-and-samplesLien “Demande de soutien financier Post-Cruise IODP-France” : http://www.iodp-france.org/pro/appels-doffres-iodp-france/soutient-financier-post-cruise/

Journées d’information “Porteurs de projet IODP” :

Le bureau IODP-France organise actuellement des séminaires d’information dans toute la France sur le thème: “Historique et Fonctionnement du Programme IODP, comment participer, comment monter un projet d’expédition IODP ?”. Les scientifiques impliqués dans IODP en tant qu’embarquant seront in-vités à présenter leurs résulats et les scientifiques impliqués dans IODP en tant que porteur de projet ayant abouti à une expédition seront les bienvenus pour expliquer la procédure à suivre, donner des conseils sur le contenu et le format d’une demande “idéale”, sur les pièges rédactionnels à éviter, etc... En attendant de nous recevoir pour un séminaire, voici le lien pour télécharger le guide pour soumettre un projet de forage : https://www.iodp.org/iodp-proposal-submission-guidelines-8-2016/file

Si votre laboratoire est intéressé pour nous recevoir, veuillez nous contacter aux adresses suivantes : iodp-france@get.omp.eu / stephanie.cuven@get.omp.eu

Infos Expéditions

Annonces

Workshops / Publications / Annonces diverses

Workshops ou congrès en rapport avec le programme IODP

MagellanPlus Workshop : to assemble a core working group to initiate an IODP propos-al for drillingLien internet : http://www.ecord.org/science/magellanplus/

••• “ North Atlantic Igneous Province continental break-up magmatism and impacts on global warming during the Paleogene ” (29-30 mai 2018) - Kiel, Germany. Convener: Christian Berndt Flyer disponible sur le lien internet : http://www.ecord.org/science/magellanplus/

••• “ Temporal evolution of Arctic gas hydrate and methane seepage systems ” (4-5 June 2018) Tromsø, Norway. Convener: Andreia Plaza-Faverola Flyer disponible sur le lien internet : http://www.ecord.org/science/magellanplus/

••• “ Greenland Ice Sheet evolution revealed by drilling a transect on the Baffin Bay – West Greenland Margin (909-full) ” (mid-September 2018) Copenhagen, Denmark. Convener: Paul Knutz

2018 Special Call:

••• Demystifying the IODP Proposal Process for Early-Career Scientists Lien internet : http://www.ecord.org/science/magellanplus/

••• Initiating concepts for a future scientific drilling ocean programme beyond 2023 Lien internet : http://www.ecord.org/science/magellanplus/

Nouvelles publications IODP-France / ECORD / IODP

New Issue of Scientific Drilling, a multidisciplinary ICDP-IODP program journal de-livering peer-reviewed science reports from recently completed and ongoing international scientific drilling projects. Issue number 23 is available online. Lien internet : http://www.scientific-drilling.net/index.html https://www.sci-dril.net/22/index.html

Parution des derniers Proceedings Lien internet : http://iodp.tamu.edu/publications/proceedings.html

Expedition 366: Mariana Convergent Margin and South Chamorro Seamount - 7 February 2018 Lien internet: http://publications.iodp.org/proceedings/366/366title.html Expedition 364: Chicxulub K-T Impact Crater - 30 December 2017 Lien internet: http://publications.iodp.org/proceedings/364/364title.html

Expedition 362: Sumatra Seismogenic Zone - 6 October 2017 Lien internet: http://publications.iodp.org/proceedings/362/362title.html

Workshops

Publica-tions

Expédition 361: South African Climates (Agulhas LGM Density Profile) - 30 September 2017 Lien internet: http://publications.iodp.org/proceedings/361/361title.html Expedition 370: Temperature Limit of the Deep Biosphere off Muroto - 23 November 2017 Lien internet: http://publications.iodp.org/proceedings/370/370title.html

Expedition 365: NanTroSEIZE Stage 3: Shallow Megasplay Long-Term Borehole Monitoring System - 5 August 2017 Lien internet : http://publications.iodp.org/proceedings/365/365title.html

Annonces diverses / jobs

••• JAMSTEC (Japan Agency for Marine-Earth Science and Technology) is recruiting a total of 4 – 5 International Post-doctoral Fellow positions. JAMSTEC has established an international post-doctoral fellowship programme. It is intended that research grants will be provided to successful applicants, which will facilitate smooth start-up of his/her research in JAMSTEC (¥1,000,000 for the first fiscal year and ¥500,000 for each of the second and third years). Job Description: Successful applicants to this programme are expected to conduct scientific work inde-pendently on research topics of their own proposing or to proceed with research at JAMSTEC. The suc-cessful applicant will also have access to the necessary facilities and equipment at JAMSTEC during the contract period. A mentor will be designated to each JAMSTEC International Postdoctoral Fellow, who will facilitate his/her research activities and evaluate research progress each year.Relevant research fields: Any natural science or engineering field.(We welcome applicants without experience or background in Oceanography or Earth Sciences.) Lien : http://www.jamstec.go.jp/e/about/recruit/jinji_20180528.html

••• New IODP Forum Chair selected: Dick Kroon, Regius Chair of Geology at the University of Edin-burgh, has been selected as the next chair of the IODP Forum. Dick will replace outgoing chair Jamie Austin effective October 1, 2018 for a three-year term.

••• Work at sea for IODP as an ASSISTANT RESEARCH SCIENTIST. The JOIDES Resolution Science Operator (JRSO) at Texas A&M University invites applications for an Expedition Project Manager / Staff Scientist. Lien : https://www.iodp.org/tamu-expedition-project-manager-ad/file

••• New SEP Co-Chair selected: The JOIDES Resolution Facility Board has confirmed Professor Lisa Mc-Neill of the National Oceanography Centre Southampton, University of Southampton as the next co-chair of the Science Evaluation Panel. Lisa will replace outgoing co-chair Professor Ken Miller effective April 1, 2019 for a three-year term.

••• The final report of the Deep Crustal Drilling Engineering Working Group convened by the JR Facility Board is now available. Lien : https://iodp.org/deep-crustal-drilling-engineering-working-group/file

••• Consensus Items from the 4th IODP Forum meeting are available. Lien : http://www.iodp.org/forum-minutes

••• Keeping Our Focus on the Subseafloor: Eos opinion page on the value of marine seismic facilities. Lien : https://eos.org/opinions/keeping-our-focus-on-the-subseafloor

••• Expedition cancelled: The ECORD Science Operator regrettably announced the cancellation of Expe-dition 377 (Arctic Ocean Paleoceanography). Lien : http://www.iodp.org/eso-exp-377-cancellation-letter/file

••• ESO has issued an update re: Exp 373 (Antarctic Cenozoic Paleoclimate), which is now delayed into winter 2020-2021 at the earliest. Lien: http://www.iodp.org/exp-373-update-from-eso-july-2017/file

••• Videos of presentations from the 2017 JpGU-AGU joint meeting session on scientific ocean drilling are now available. Lien: http://www.jpgu.org/en/publications/movies.html

••• New and eye-catching videos of Expedition 381 Corinth Active Rift Development are posted on our Youtube channel Lien: https://www.youtube.com/user/ECORDESO

••• “How are IODP cores taken? How do scientists gain data from these rocks and sediments? And what happens to the cores after an expedition? This documentary shows the exciting journey of hard rock cores recovered during Expedition 364 Chicxulub K-Pg Impact Crater: the drilling process, core description, the sampling and finally the archiving in the IODP core repository.”Watch the video on the ECORDESO Youtube channel: https://youtu.be/v4fgoW5b564

Liens pour télécharger le rapport IODP-France 2003-2016 Vous y trouverez les dernières statistiques sur la participation française au Programme IODP et les résul-tats majeurs des expéditions récentes.

http://www.iodp-france.org/pro/wp-content/uploads/2017/01/BilanIODP-France2016.pdf

Liens pour télécharger le Science Plan IODP 2013-2023 :

https://www.iodp.org/science-plan/115-iodp-science-plan-br/file

https://www.iodp.org/science-plan/127-low-resolution-pdf-version/file

Expédition 375 : Hikurangi Subduction Margin - 8 mars au 5 mai 2018

Clins d’oeil

Crédit : Tim Fulton&IODP

Pierre R. Malie (Organic Geo-chemist) - Géosciences Mont-pellier

Crédit : Tim Fulton&IODP Crédit : Clayton Furman&IODP

Sciences IODP

Figure 1 – Location of the sequences collected during IODP Expedition 339 Mediterranean Outflow Water (after Hernández-Mo-lina et al. 2015. Onset of Mediterranean outflow into the North Atlantic. Science 344, 1244-1250).

Avancées scientifiques : Exp. IODP 339 Participantes françaises : Emmanuelle Ducassou et Maria F. Sánchez Goñi (EPOC, Bordeaux)

Mediterranean Outflow - EXPEDITION IODP 339

Sediments cored along the southwestern Iberian margin during Integrated Ocean Drilling Program Expedition 339 provide constraints on Mediterranean Outflow Water (MOW) circulation patterns from the Pliocene epoch to the present day and a reference site for paleoclimate studies (U1385 – Shackle-ton site) (Fig. 1).

The large gravity deposits of the Pliocene and Pleistocene in the Gulf of Cádiz (Fig. 2)

The base of the Faro contouritic drift (IODP Site U1386) on the northern margin of the Gulf of Cádiz (Algarve margin) is characterized by two sequences of frequent gravity deposits with different ages and compositions. Among these gravity deposits, several relatively thick debrites (up to 12 m) have been observed and studied in detail (Ducassou et al., 2016).Sedimentological analyses have been performed and because of non-turbulent behavior of debris flows, detailed micropale-ontological studies could be realized. Planktonic foraminifera thus allowed establishing a detailed biostratigraphy of these deposits. Benthic foraminifer and ostracod assemblages were used to evaluate the origin of the sediment composing these debris flows and estimate their run-out distance.These debrites are dated from Early Pliocene and early Pleistocene, and were deposited in a mesobathyal environ-ment. They comprise silty mud clasts and matrixes with sand content up to 34%. The Early Pliocene debrites are bio-clast-rich whereas the Early Pleistocene debrite is enriched in terrigenous particles. The data indicates that these debrites were triggered on the continental shelf and traveled less than 100 km, eroding the seafloor all along their path for the Early

Pliocene debrites and only the first part of their path for the early Pleistocene debrite. Matrixes originate from failure areas whereas eroded sediments along the flow pathway are incorporated into the flow as clasts.High abundance of shelf fauna during the Early Pliocene and great supply of terrigenous particles from rivers during the early Pleistocene in the south-western Iberian margin have favored gravity flows from the continental shelf to the slope. The contouritic paleo-moat of the Faro drift has been a deter-mining channeling feature for gravity flows along the Algarve margin during the early Pleistocene, testifying of the strong interaction between MOW circulation and down-slope pro-cesses. Tectonic and diapiric activities were significant during Early Pliocene and early Pleistocene on the Algarve margin and could have been triggering parameters of failures related to these debris flows.

The Contourite Depositional Systems in the Gulf of Cádiz

The Contourite Depositional Systems (CDS) in the Gulf of Cádiz and on the West Iberian margin preserve a unique archive of Mediterranean Outflow Water (MOW) variability over the past 5.3 Ma. These CDS have been recently drilled

Figure 2 – Synthesis of the origin of clasts and matrix from early Pliocene and early Pleistocene debrites.

in several places during the IODP Expedition 339. These drill sites now offer a new window to the internal Pliocene and Quaternary architecture of the CDS. In this study, we use downhole and core Gamma Ray (GR) shipboard data acquired from 5 sites drilled in the CDS along the middle slope and 1 site drilled in deeper setting of the lower slope, out of the MOW path. The GR data primarily tracks the clay content in the sediment and is the expression of sediment supply and, for sites drilled in the CDS, of the bottom current processes. Both appear astronomically controlled as shown by spectral analysis performed on the GR data (Lofi et al., 2016). Results also reveal that the GR log patterns correlate well across the sites over the last 1.4 My. Several GR horizons corresponding to drops in GR values were identified, most of which fit with coarse-grained deposits observed in cores and interpreted as contourite beds. The GR horizons are interpreted as isochro-nous horizons, providing a regional scale chronostratigraphic framework for the CDS depositional records with an accuracy of ~20 ky. We further assess the spatial and temporal variabili-ty of the CDS hiatuses at the regional scale.

The Shackleton site and the paleoclimate off the southwestern Iberian margin (Fig. 3)

One of the goals of the IODP Mediterranean Outflow (MOW) Expedition 339 has been unraveling the forcings controlling the magnitude and climate variability of past interglacials in southwestern Iberia, periods marked as at present-day by low ice volume. To this aim this expedition collected a deep-sea sedimentary sequence in the southwestern Iberian margin

covering the last 1.5 million years. We focused on three inter-glacials: a) the best orbital analogs to our present interglacial, MIS 19 (~800,000 years ago, ka) and MIS 11 (~400 ka) (Oliveira et al., 2016; Sanchez Goñi et al., 2016; Desprat et al., 2017), and b) MIS 31 (1,070 ka) an important analog for ongoing and projected global warming (Oliveira et al., 2017). We applied a land-ocean direct correlation approach based on the study of terrestrial (pollen), marine and ice climate indicators from the same sample set. We found that MIS 31 and MIS 11 super-in-terglacials, the warmest at high latitudes, were not particu-larly warm in southwestern Iberia. MIS 31-MIS 19 and MIS 11 were marked by dominant ~5000-yr and 10,000-yr cyclicities in Mediterranean forest contractions, respectively, indicating repeated meridional shifts in the direction of the North Atlan-tic westerlies. These cooling and drying events were associ-ated with warmth in the subtropical gyre leading to repeated air-sea thermal contrasts in southwestern Iberia. These cycles are not systematically associated with iceberg discharges and, therefore, to high latitude forcing. Their origin seems to be the low-latitudes triggered by the harmonics of precession. The observed thermal air-sea decoupling in southwestern Iberia enhanced moisture production that may lead to ice growth at the MIS 19c/19b and MIS 11c/11b transitions. The freshwater fluxes during MIS 19ab and MIS 11ab associated with stronger forest contractions amplified the cooling events in the North Atlantic promoting further cooling and leading to MIS18 and MIS 10 glaciations, respectively. Different domi-nant cyclicity of MIS 1 (~2500-yr cycles) and MIS 19 challenges the similar duration of the Holocene and MIS 19c.

Figure 3 – Direct land-sea climatic record of MIS 19 (~800,000 years ago), indicating 5,000-year dominant cyclicity of the west-erlies.

Our work has also aimed to understand the interplay between the climate of southwestern Iberia and MOW during two iconic deglaciations from glacial to high latitude super-inter-glacials, MIS 32 to MIS 31 and MIS 12 to MIS 11, (Sánchez Goñi et al., 2016). The comparison between climate and MOW changes shows a concurrent maximum in both MOW strength (minimum percentages of clay in the lower MOW) and region-al aridity (highest percentages of semi-desert plants) during MIS 12. MIS 11c was, in contrast, characterized by weak MOW bottom current and wet conditions (high percentages of Mediterranean forest and heathlands). The climatic conditions between MIS 31 and MIS 30, ~1.1-1.05 million years ago (Ma) were less contrasted with weaker MOW and wetter conditions during MIS 30 than those prevailing during MIS 12. The in-crease in fine particles from these glacials to interglacials and in coarse fraction from interglacials to glacials was coeval with forest and semi-desert expansions, respectively, indicating the lowering/enhancement of MOW strength during periods of regional increase/decrease of moisture. The strongest regional aridity during MIS 12 coincides with a maximum in MOW strength. This MOW intensification may have pre-con-ditioned the North Atlantic by increasing salinity, thereby triggering the strong resumption of the Meridional Overturn-ing Circulation that could contribute to the great warmth that characterizes the high latitude MIS 11c super-interglacial.

Finally, the study of dinoflagellate cysts preserved in IODP site U1385 and neighboring sites during the nine interglacials of the last 800,000 years has revealed that surface waters around Iberia were characterized by the repetitive occurrence of the same dinocyst assemblage (Eynaud et al., 2016). This study also shows coherent features on both sides of the Gi-braltar Strait indicating a constant interchange of populations and a permanent connection between Atlantic and Mediterra-nean marine biomes, even during sea-level low stands.

Emmanuelle Ducassou and Maria F. Sánchez Goñi(EPOC, Bordeaux)

References

Desprat, S., Oliveira, D., Naugton, F., Sánchez Goñi, M.F. (2017). L’étude du pollen de sequences sédimentaires marines pour la compre-hension du climat : l’exemple des periods chaudes passes. Quaternaire, 28, 259-270.Ducassou E., Fournier L., Sierro F.J., Alvarez Zarikian C.A., Lofi J., Flores J.A., Roque C. (2016). Origin of the large Pliocene and Pleistocene debris flows on the Algarve margin, Marine Geology, 377, 58-76.Eynaud, F., Londeix, L., Penaud, A., Sanchez-Goni, M.-F., Oliveira, D., Desprat, S., and Turon, J.-L., (2016). Dinoflagellate cyst population evolution throughout past interglacials: Key features along the Iberian margin and insights from the new IODP Site U1385 (Exp 339). Global and Planetary Change 136, 52-64.Lofi J., Voelker A.H.L., Ducassou E., Hernandez-Molina F.J., Sierro F.J., Bahr A., Galvani A., Lourens L.J., Pardo-Iguzquiza E., Pezard P., Rod-riguez-Tovar F.J., Williams T. (2016). Quaternary chronostratigraphic framework and sedimentary processes for the Gulf of Cadiz and portu-guese contourite depositional systems derived from natural gamma ray records, Marine Geology, 377, 40-57.Oliveira, D., Sánchez Goñi, M.F., Naughton, F., Polanco-Martínez, J.M., Jimenez-Espejo, F.J., Grimalt, J.O., Martrat, B., Voelker, A.H.L., Trigo, R., Hodell, D., Abrantes, F. Desprat, S. (2017). Unexpected weak sea-sonal climate in the western Mediterranean region in response to MIS 31, a high-insolation forced interglacial. Quaternary Science Reviews, 161, 1-17. Oliveira, D., Desprat, S, Rodrigues, T., Naughton, F., Hodell, D.A., Trigo, R., Rufino, M., Lopes, C., Abrantes, F., Sánchez Goñi, M.F. (2016) The di-versity of millennial-scale cooling events in southwestern Europe during MIS 11. Quaternary Research 86, 373-387.Sánchez Goñi, M.F., Rodrigues, T., Hodell, D.A., Polanco-Martinez, J.M., Alonso-Garcia, M., Hernandez-Almeida, I., Desprat, S., Ferretti, P. (2016) Tropically-driven climate shifts in southwestern Europe during MIS 19, a low excentricity interglacial. Earth and Planetary Science Letters 448, 81-93.Sánchez Goñi, M.F., Llave, S., Oliveira, D., Naughton, F., Desprat, S., Ducassou, E., Hodell, D.A., Hernández-Molina, F.J. (2016) Climate changes in south western Iberia and Mediterranean Outflow varia-tions during two contrasting cycles of the last 1 Myrs: MIS 31-MIS 30 and MIS 12- MIS 11. Global and Planetary Change, 136, 18-29. doi: 10.1016/j.gloplacha.2015.11.00668.

Avancées scientifiques : Exp. IODP 364Participants français : Johanna Lofi (Géosciences Montpellier), Elise Chenot (Biogéosciences Dijon), Rubén Ocampo-Torres (ICPEES, Strasbourg), William Zylbermann (CEREGE, Aix-en-Provence)

New simulation supports Chicxulub impact scenario :

New findings from Expedition 364 Chicxulub K-Pg Impact Crater were presented at EGU 2018 by Auriol Rae and Gareth Collins (Imperial College, UK): “The extraordinary porosity of drill cores extracted in 2016 from the crater’s peak ring suggests that rocks were moved from great depths to create it, according to Auriol Rae, a geologist at Imperial College London, and his thesis supervisor there, Gareth Collins. They reported their con-clusions this month at the General Assembly of the European Geosciences Union in Vienna, Austria. Their lat-est findings point to the correctness of computer models that have been developed to explain the emergence of peak rings. And they provide guidance for exobiologists looking for life on other planets.”

from den Hond, B. (2018), New simulation supports Chicxulub impact scenario, Eos, 99, https://doi.org/10.1029/2018EO097623.Published on 27 April 2018. Liens internet : https://eos.org/articles/new-simulation-supports-chicxulub-impact-scenario

IODP ••• This deep-sea mystery is changing our under-standing of life, TED talk

Lien : https://www.ted.com/talks/karen_lloyd_this_deep_sea_mystery_is_changing_our_understanding_of_life#t-760565

IODP Exp. 371 ••• Scientists reveal secrets of lost continent Zealandia, EarthSky.org

Lien : http://earthsky.org/earth/lost-continent-zealandia-drill-ing-expedition-2017

IODP Exp. 376 ••• Digging for gold inside a submarine vol-cano, Earth Magazine

Lien : https://www.earthmagazine.org/article/drilling-gold-in-side-submarine-volcano

Récemment dans les News

IODP Exp. 360 ••• Keep Digging, BBC radio

Lien : www.bbc.co.uk/programmes/b08kv3y6

IODP Exp. 364 ••• Drilling into the Chicxulub crater, Ground Zero of the dinosaur extinction, New York Times

Lien : https://www.nytimes.com/2016/11/18/science/chicxu-lub-crater-dinosaur-extinction.html?smid=pl-share

IODP Exp. 364 ••• Asteroid strike made ‘instant Himalayas,’ BBC

Lien : http://www.bbc.com/news/science-environ-ment-38019604

IODP Exp. 364 ••• Scientists hit pay dirt in drilling of dino-saur-killing impact crater, Science.

Lien : http://www.sciencemag.org/news/2016/11/updat-ed-drilling-dinosaur-killing-impact-crater-explains-buried-cir-cular-hills

IODP Exp. 364 ••• SoundCloud: Interview from the impact crater, Texas Standard.

Lien : https://soundcloud.com/texas-standard/dino-cra-ter-04252016

IODP and IODP Exp. 360 ••• A Decades-Long Quest to Drill Into Earth’s Mantle, Smithsonian.com.

Lien : https://www.smithsonianmag.com/science-nature/dec-ades-long-quest-drill-earths-mantle-may-soon-hit-pay-dirt-180957908/?no-ist

IODP Exp. “NanTroSEIZE” ••• Some like it hot: scientists drill off Japan for sizzling life, Reuters

Lien : https://www.reuters.com/article/us-environment-tem-peratures-idUSKCN11E1LI

IODP Exp. “NanTroSEIZE” ••• Deep-sea drilling expedition to look for life’s limits in scalding environment, Science

Lien : http://www.sciencemag.org/news/2016/09/deep-sea-drilling-expedition-look-lifes-limits-scalding-envi-ronments

IODP Exp. 362 ••• Floating lab drills 1.5km below sea floor to study megaquakes, New Scientist.

Lien : https://www.newscientist.com/article/2102382-float-ing-lab-drills-1-5km-below-sea-floor-to-study-megaquakes/