Mini-Workshop on Feedbacks Between Mantle Composition, Structure, and Evolution

Dates: 14, 15, 16 September 2020 (Monday, Tuesday, Wednesday)

Times (same each day): 5:00-7:00 (Los Angeles), 8:00-10:00 (New York), 13:00-15:00 (London), 14:00-16:00 (Zurich), 21:00-23:00 (Tokyo), 22:00-24:00 (Sydney)

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Basic Information:

Conveners: Anna Gülcher (ETH), Christine Houser (ELSI, Tokyo Tech), John Hernlund (ELSI, Tokyo Tech), Reidar Trønnes (CEED, Univ. Oslo), Maxim Ballmer (UCL)

Description: The dynamics and evolution of the Earth's accessible crust and lithosphere is clearly complex, however, relatively little is known about the deeper rocky mantle that underlies the tectonic plates and exchanges significant heat and matter with the surface environment over the Earth's history (and which also cools and drives core dynamics). Conceptions of the lower mantle have long been idealized as a simple highly viscous fluid-like medium whose viscosity regulates mixing and overturn of the mantle. However, geochemical and seismological observations reveal numerous complexities that falsify such a simplistic conception of the deep mantle, and motivate us to engage with numerous potential complexities in order to better understand this key region of our planet. The scientific aim of this workshop is to gather an international inter-disciplinary group of scientists who are engaging with these complexities in their research, and to stoke dialogue and new ideas for how we might tackle the challenges of understanding the feedbacks between mantle composition, structure, and evolution.

What is a "Mini-Workshop?" Our goal is to explore new ways for scientists to share their results and engage in dialogue internationally without leaving home. The constraints imposed by the SARS-CoV-2/COVID-19 pandemic and its associated travel restrictions present an opportunity to explore new modes of interaction to enhance scientific exchange that will mitigate the carbon footprint and financial cost of international travel, and enhance opportunities for participation, also in the post-pandemic future. This mini-workshop is an experiment, with limited time blocks (2 hours) each day that plausibly allows participants from across the globe to attend in real time. We hope to gather feedback from participants in order to make further adjustments and fine tune this format for posterity. Please let us know what you think, we'd like to hear your comments/suggestions.

Daily Plan: Short sessions, 2 hours each day. Sessions will begin with a short intro, followed by short invited talks (15-20 minutes each) for the first hour. The second hour will feature contributed mini-presentations (2 minutes each, maximum 2 slides) and panel discussion.


Registration is now closed.

How to Connect and Participate:

Registered participants will receive an e-mail from the conveners containing the information necessary to join the sessions. If you do not receive this e-mail prior to the start of the mini-workshop, please check your spam/junk mail folder.

We plan to use Zoom, if you do not already have an account with Zoom, then it may be helpful to set one up in advance of the workshop.

Please join before the start time in order to ensure that your connection is working properly. We respect your time, and we will accordingly stick to the schedule.

Program/Schedule (All Times are listed using CST/Central Europe Time)

Day 1: Constituents of the Lower Mantle:

Moderators: Anna Gülcher and Maxim Ballmer

14:00 Welcome and Orientation

14:05 Maxim Ballmer: Introduction to the Mini-Workshop

14:10 Val Finlayson: Temporal behavior of the Rurutu-Arago and Macdonald hotspots: Evaluating lower mantle structures below the Cook-Austral region

14:30 Fréderic Deschamps: Deep mantle temperature and composition from shear velocity and attenuation: examples of the Western Pacific and Central America

14:50 Shintaro Azuma: Two phase deformation experiments of bridgmanite and ferropericlase under high pressure and large strain

15:10 Break for 5 Minutes

15:15 Mini-Presentations (facilitated by Reidar Trønnes, click here to view mini-presentation abstracts)

  • Daniel Helman: The Stability of Mantle Minerals Based on Their Dielectric Permittivity and Index of Refraction

  • Ashim Rijal: Inferring equations of state of the lower mantle minerals using neural networks.

  • Grace Shephard: Mapping out the lower mantle - the iron spin crossover and the ambient mantle.

  • Min Chen: Existence of a low-viscosity layer beneath the 660-km discontinuity based on the orphan slabs imaged beneath

  • Vernon F. Cormier: Mantle Phase Change Detection from Stochastic Tomography

  • Christine Houser: Tomography's relevance for future deep Earth studies

  • Anne Davaille: LLSVPs: bundles of mantle thermochemical plumes rather than thick stagnant piles

15:35 Panel Discussion (John Brodholt, Val Finlayson, Marcel Thielmann, Christine Thomas)

16:00 End

Day 2: Flow in the Lower Mantle

Moderators: Christine Houser and John Hernlund

14:00 Welcome and Orientation

14:05 Hauke Marquardt: Lower mantle phase transitions: Importance to seismology and geodynamics

14:25 Laura Cobden: Probing mantle plumes using seismic arrays

14:45 Juliane Dannberg: ULVZs as potential zones of partial melt

15:05 Break for 5 Minutes

15:10 Mini-Presentations (facilitated by Reidar Trønnes, click here to view mini-presentation abstracts)

  • Lara Kalnins: Volcanism in east Australia and the Tasman Sea: Mechanisms behind three parallel hotspot trails

  • Björn Heyn: How thermochemical piles control plume formation and core-mantle boundary topography

  • Kevin Konrad: Mapping the History of Potentially Long-Lived Northern and Eastern SOPITA Hotspots

  • Federica Restelli: Towards robust characterisation of mantle flow using the SOLA method

  • Edward Clennett: Reconstructing western North America using lower mantle slabs.

  • Scarlett Jesybet Montoya Rivera: Preliminary petrographic study of ultramafic xenoliths from Fresnillo, Zacatecas (Mesa Central, Mexico)

  • Gabriele Morra: Hierarchical Plate Organization of the Earth and Relationship with Deep Interior Dynamics

  • Diogo Lourenco: Efficient cooling of rocky planets by intrusive magmatism

  • Keely O'Farrell: Deep mantle composition and early Earth surface mobility

15:35 Panel Discussion (Laura Cobden, Juliane Dannberg, Hauke Marquardt, Andrea Mundl-Petermeier)

16:00 End

Day 3: Reservoirs and Mixing in the Lower Mantle

Moderators: Maxim Ballmer and Anna Gülcher

14:00 Welcome and Orientation

14:05 Lauren Waszek: The seismic link between Earth's mid-mantle and transition zone: implications for composition and dynamics

14:30 Andrea Mundl-Petermeier: Tungsten isotope anomalies in plume derived rocks: Evidence for core-mantle interaction?

14:55 Break for 5 Minutes

15:00 Mini-Presentations (facilitated by Reidar Trønnes, click here to view mini-presentation abstracts)

  • Fabio Crameri: Diagnosing ambient mantle

  • Seema Kumari: 182W-142Nd isotope evolution in an open-system model of the Earth: Implication for geodynamic processes on early Earth

  • Reidar G. Trønnes: Deep-rooted plumes sample Hadean refractory domains

  • Maxim Ballmer: Reactive crystallization of the Basal Magma Ocean

  • Margo Regier: The lithospheric to lower mantle carbon cycle in sublithospheric diamonds

  • Doyeon Kim: Sequencing Seismograms: A Panoptic View of Scattering in the Core-Mantle Boundary Region

  • Jamie Ward: Analysing Lower Mantle Structure using Slowness Vector Measurements

  • Tim Jones: Burying Earth's primitive mantle in the slab graveyard

  • Anna Gülcher: The coexistence of recycled and primordial heterogeneity in Earths lower mantle: a geodynamical perspective

  • John Hernlund: Does mantle convection mix the mantle?

15:25 Moderated Open Discussion (facilitated by the convenors)

15:50 Wrap-Up, Future Prospects

15:59 Solicitation and Instructions for Submitting Workshop Feedback

16:00 End

Contact Information:

Do you have any questions or concerns? Please don't hesitate to contact us...

...we will get back to you as soon as possible.

Registered Participants:

Note: Those who declined to be publicly listed are not included below.

  • Diego Osorio Afanador, Independent

  • Siddhant Agarwal, DLR Berlin

  • Matthew Agius, Università degli Studi Roma Tre

  • Norikatsu Akizawa, University of Tokyo

  • Rashni Anandawansha, New Mexico State University

  • Camilo Anaya, Universidad Industrial de Santander

  • Elsa Anaya, UCSC

  • Antonio Angellotti, Sapienza university

  • Angelo, University of Münster

  • Vera Assis Fernandes, CEED Visiting Researcher

  • Guillaume Avice, IPGP

  • Shintaro Azuma, Tokyo Institute of Technology

  • Vivek G Babu, Indian Institute of Technology, ISM Dhanbad, India

  • Maxim Ballmer, UCL

  • Elisa Soares Rocha Barbosa, Universidade Federal De Goiás

  • Roy Bassoo, Baylor University

  • Thorsten Becker, UT Austin

  • Ashley Bellas, CU Boulder

  • Dan Bevan, University of Bristol

  • G Sree Bhuvan,

  • Andy Biggin, University of Liverpool

  • Ingrid Blanchard, University of Potsdam

  • Thomas Bodin, Univ Lyon

  • Irene Bonati, ELSI, Tokyo Institute of Technology

  • Anselme Borgeaud, Institute of Earth Sciences, Academia Sinica

  • Alistair Boyce, University of Cambridge

  • Dan Bower, CSH, Uni Bern

  • John Brodholt, UCL

  • Rohan S Byrne, The University of Melbourne

  • Carolina Camarda, Universidade Federal de Goiás

  • Razvan Caracas , CNRS, Ecole Normale Supérieure de Lyon & CEED, Univeristy of Oslo

  • Catherine Chauvel, IPGP

  • Min Chen, Michigan State University

  • Karwai Cheng, ETHZ

  • Edward Clennett, University of Texas at Austin

  • Laura Cobden, Utrecht University

  • Jenny Collier, Imperial College London,

  • Max Collinet, German Aerospace Center (DLR)

  • Laura Parro Complutense, University of Madrid,

  • Clint Conrad, University of Oslo

  • Giulia Consuma, University of Bologna

  • Patrick Cordier, University of Lille

  • Vernon F. Cormier, University of Connecticut,

  • Andrés Correa, Cruz Roja

  • Sanne Cottaar, University of Cambridge

  • Fabio Crameri, CEED, University of Oslo

  • Neala Creasy, Colorado School of Mines

  • Giacomo Criniti, Bayerisches Geoinstitut

  • BHayden Dalton, The University of Melbourne

  • Juliane Dannberg, University of Florida

  • Pratik Kumar Das, CEED, University of Oslo

  • Anne Davaille, CNRS / University Paris-Saclay

  • Huw Davies, Cardiff University

  • Rhodri Davies, Australian National University

  • Frederic Deschamps, Academia Sinica

  • Matteo Desiderio, University College London

  • Arwen Deuss, Utrecht University

  • Jemila Edmond, Case Western Reserve University,

  • Isaac Esleytter Montalvan Diaz, Jorge Basadre Grohman University State

  • Andrea Di Muro, IPGP

  • Susannah Dorfman, Michigan State University,

  • James Dottin III, University of Maryland

  • Alvaro Sergio Osma Duarte, Master student

  • Sabine Dude, University of Münster

  • Thomas Duvernay, Australian National University

  • Manuele Faccenda, Università di Padova

  • Val Finlayson, University of Maryland

  • Angus Fitzpayne, ETH Zürich

  • Megan Flanagan, EditSprings

  • Fleury, DLR

  • Millet Florian, University of Cambridge

  • Carlos Gallego, Colombian Geological Survey

  • Sandra Ramírez García, Universidad Nacional Autónoma de México

  • Fanny Garel, Université de Montpellier, France

  • Vanessa Colás Ginés, Instituto de Geología, UNAM

  • Andrea Giuliani, ETH Zurich

  • Fernanda Gervasoni, Federal University of Goiás

  • Gönenç Göçmengil, Istanbul University-Cerrahpaşa, Geochronology and Geochemistry Laboratory

  • Julián Eduardo Pinzón Gonzalez, Estudiante

  • Chris Gregson, University of Bristol

  • Weibin Gui

  • Anna Gülcher, ETH-Zurich

  • Fabián Gutiérrez-Aguilar, National Autonomous University of Mexico

  • Ulrich Hansen , University of Münster

  • Gerrit Hein, University of Vienna,

  • Benedict Heinen, University of Bristol

  • Daniel Helman, College of Micronesia-FSM

  • Jean-Alexis Hernandez, CEED, University of Oslo

  • John Hernlund, ELSI, Tokyo Institute of Technology

  • Björn Heyn, CEED, UiO

  • Mark Hoggard, Harvard University

  • Anna Horleston, University of Bristol

  • Christine Houser, ELSI, Tokyo Institute of Technology

  • Dongyang Huang, ETH

  • Ilenia, INGV

  • Jessica Irving, University of Bristol

  • Mike Jansen, University of Cologne

  • Jennifer Jenkins, University of Cambridge

  • Jiajun, Institute of Geochemistry Chinses Academy of Sciences

  • Jianjun Jiang, Princeton University

  • Tim Jones, University California San Diego

  • Lara Kalnins, University of Edinburgh

  • Richard Katz, University of Oxford

  • Matthew Kemp, University of Oxford

  • Doyeon Kim, University of Maryland

  • Taehyun Kim, Yonsei Univeristy

  • Scott King, Virginia Tech,

  • Ben Knight, Monash University,

  • Paula Koelemeijer, Royal Holloway University of London

  • Kevin Konrad, Oregon State University

  • Agata Krzesinska, Centre for Earth Evolution and Dynamics, UiO

  • Dave Kuentz, Miami University

  • Britany Kulka, Arizona State University

  • Seema Kumari, Indian Institute of Technology Kanpur, India

  • Ilya Kupenko, University of Münster,

  • Voon Hui Lai, Australian National University

  • Yaqi Jie, Michigan State University

  • Matthieu Laneuville, Earth-Life Science Institute, Tokyo

  • Marine Lasbleis, Université de Nantes, CNRS

  • Kanani Lee, Lawrence Livermore National Laboratory

  • Yongjae Lee, Yonsei University

  • Charles E Leher, Aarhus University and UC Davis

  • Ved Lekic, University of Maryland, College Park

  • Guoliang Li, 1Department of Earth and Environmental Sciences, Michigan State University, East Lansing, MI, 48824

  • Jiaqi Li, Michigan State University

  • Yang Li, Institute of Geology and Geophysics, Chinese Academy of Sciences

  • Yunguo Li, University College London

  • Zhi Li, University of Cambridge

  • Bob Liebermann, Stony Brook University

  • Kang Wei Lim, ELSI, Tokyo Institute of Technology

  • Thuany Costa de Lima, Australian National University

  • Jung-fu Lin, The University of Texas at Austin

  • María del Mar Almazán López, Instituto de Geología, Universidad Nacional Autónoma de México

  • Oliver Lord, University of Bristol

  • Diogo Lourenco, University of California, Berkeley

  • Mingda Lv, Michigan State University

  • Manas M, Wadia Institute of Himalayan Geology, India

  • Ziqi Ma, Institute of Geology and Geophysics Chinese Academy of Sciences

  • Christian Maas, University of Münster

  • Arnould Maëlis, CEED, University of Oslo

  • Lucan Mameri, University of Montpellier

  • Walid Ben Mansour, Macquarie University

  • Hauke Marquardt, Oxford University

  • Enrico Marzotto, Bayerisches Geoinstitut, BGI

  • Maxime Maurice, German Aerospace Center (DLR), Berlin

  • Sergei Medvedev, University of Oslo

  • Davi Resende Messias, UFG

  • Chris Erik Mohn, Centre of Earth Evolution and Dynamics, University of Oslo

  • Alessandra Montanini, University of Parma, Italy

  • Walter D. Mooney, US Geological Survey

  • Guillaume Morard, ISTerre, Grenoble

  • Gabriele Morra, University of Louisiana at Lafayette

  • Dr. Mueller, KIT

  • Joshua Muir, Institute of Geochemistry Chinese Academy of Sciences

  • Andrea Mundl-Petermeier, University of Vienna

  • Henri-Claude Nataf, Univ Grenoble Alpes / CNRS

  • Ziqin Ni, University of Maryland College Park

  • Keely O'Farrell, University of Kentucky

  • Naywanii Geovana Garcia de Oliveira, Universidade Federal de Goiás

  • Wendy Panero, Ohio State University

  • James Panton, Cardiff University

  • Daniel Patias, University of Queensland

  • Jyotirmoy Paul, Indian Institute of Science

  • Kevin Pedroza, Universidad Nacional Autónoma de México

  • Graham Pearson, University of Alberta

  • Allison Pease, Michigan State University

  • Brad Peters, ETH Zurich

  • Claudia Piromallo, Istituto Nazionale di Geofisica e Vulcanologia, INGV,

  • Ana-Catalina Plesa, DLR

  • Adina Pusok, University of Oxford

  • Fei Qin, University of Bristol

  • Margo Regier, University of Alberta

  • Federica Restelli, Royal Holloway University of London

  • Fred Richards, Imperial College London

  • Ashim Rijal, Utrecht University

  • Jeroen Ritsema, University of Michigan

  • Sebastian Ritterbex, GRC Ehime University

  • Scarlett Jesybet Montoya Rivera, Instituto Politécnico Nacional

  • Attilio Rivoldini, Observatoire Royal de Belgique

  • Federica Rochira, University of Münster

  • Melissa Rodríguez, Universidad industrial de Santander

  • Tobias Rolf, CEED Oslo

  • Severine Rosat, CNRS - Univ. Strasbourg

  • Sebastian Rost, University of Leeds

  • Tracy Rushmer, Macquarie University

  • Stuart Russell, University of Cambridge

  • Kivanc Sabunis, Colorado State University

  • Julia Tatsue Fogaça Saijo, Goias Federal University

  • Giulia Salari, Sapienza University of Rome

  • Sonia Alejandra Torres Sanchez, Universidad Autonoma de San Luis Potosi

  • Vincent Sassard, Utrecht University

  • Diana Saturnino, LPG Nantes, CNRS

  • Arushi Saxena, University of Florida

  • Beatrice Schiavon, Sapienza University of Rome

  • Falko Schulz, German Aerospace Center (DLR)

  • Lina Schumacher, University of Münster

  • Sabrina Schwinger, German Aerospace Center (DLR)

  • Arianna Secchiari, University of Parma

  • Joyjeet Sen, Jadavpur University, Kolkata, India

  • Nicolo Sgreva, Univ. Paris-Saclay

  • Azhar Mohammad Shaikh, University of Johannesburg

  • Shivangi Sharan, LPG, University of Nantes

  • Grace Shephard, CEED, Uni.Oslo

  • Sheng-An Shih, Université catholique de Louvain

  • Christopher Smith, University of Bristol

  • Claudia Stein, University of Münster

  • ABernhard Steinberger, GFZ German Research Centre for Geosciences

  • Daniel Stubbs, University of Bristol

  • Jun Su, ELSI, Tokyo Institute of Technology

  • Yuki Suzuki, University of Tokyo

  • Paul Tackley, ETH Zurich

  • Shigehiko Tateno, ELSI, Tokyo Tech

  • Marcel Thielmann, Bayerisches Geoinstitut, Universität Bayreuth

  • Christine Thomas, University of Münster

  • Meng Tian, University of Bern

  • Rosaria Tondi, INGV

  • Viktoria Trautner, Vrije Universiteit Amsterdam

  • Luis Javier Gutierrez Trejo, National Autonomous University of Mexico

  • Evangelia Tripoliti, UCL

  • Reidar Trønnes, CEED, University of Oslo

  • Nicola Tosi, DLR

  • Miguel Tupinambá, Faculdade de Geologia, Riode Janeiro State University

  • Jonas Tusch, University of Cologne

  • Khan Akram Ullah , PhD research student at Northwest university, China

  • Nancy Van Wagoner, Thompson Rivers University, Geology

  • Iris van Zelst, University of Leeds

  • Lidunka Vocadlo, UCL

  • Jon Wade, University of Oxford

  • Jamie Ward, University of Leeds

  • Lauren Waszek, Australia National University

  • Shawn Wei, Michigan State University

  • Donald Weidner, Stony Brook University

  • Renata Maria Mattosinho Wentzcovitch, Columbia University

  • Matt Whitaker, Stony Brook University

  • Elisabeth Widom, Miami University

  • Lori Willhite, University of Maryland

  • Jenny Wong, ISTerre, Grenoble

  • Fei Wu, Institute of Geochemistry, Chinese Academy of Sciences

  • Michael Wysession, Washington University in St. Louis

  • Ziyi Xi, Michigan State University

  • Gaurav Yadav, ILBS

  • Jianfeng Yang, University of Padova

  • Jiayuan Yao, Nanyang Technological University

  • Bo Zhang, California institute of Technology

  • Wenyi Zhou, University of New Mexico

Code of Conduct:

Harassment of any kind will not be tolerated. All event attendees and staff have the right to participate in an event that is free of all forms of discrimination, harassment, bullying, and/or retaliation. Participants who are requested to stop any harassing behaviour are expected to comply immediately. If you wish to report harassment, suspect that someone else is being harassed, or have any other concerns, please contact one of the conveners as soon as possible.