Programme of the winter semester 2020/21

05 November 2020

Exploration of the Moon: What we learned from Apollo

Prof. Dr. Ralf Jaumann
(Freie Universität Berlin)

Invited by: Andreas Winkler

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The videos are now available within the FU intranet, and (only with the password) also from outside the FUB:

How to login: see message sent to GeoColloquium mailing-list, or request access information from geokoll@zedat.fu-berlin.de

1. Introduction (5 min.) by Andreas Winkler
https://fu-berlin.eu.vbrickrev.com/sharevideo/25677d3d-ad21-42a0-b923-08db207133f6 

2.
Talk: (45 min.)
https://fu-berlin.eu.vbrickrev.com/sharevideo/300cebc2-4fa1-4d2d-a8be-1220d32f91b7

26 November 2020

PD Dr. Oliver Hampe
(Museum für Naturkunde Berlin)

From petty predators to gentle giants: On the evolutionary history of the largest animals that have ever inhabited our earth

Invited by: Frank Riedel

Whales developed the most colossal vertebrates with some of the most impressive adaptations evolution has ever produced. After the extinction of the dinosaurs, and with them all dominant marine reptiles, the oceans were conquered now by mammals during the Eocene and we look here today on a remarkable fossil record. The evolution of the large baleen whales is closely connected to the palaeogeographical developments of the southern hemisphere, the glaciation of the Antarctic continent and the corresponding constellation of water currents.

Oliver Hampe studied Chemistry and Geology-Palaeontology. The graduated geologist completed his doctorate in 1991 at the Johannes Gutenberg University of Mainz. Since 1996 he is working at the Museum für Naturkunde Berlin. 2003 he habilitated in Palaeobiology and Zoology at Humboldt University Berlin. His research focuses on extinct aquatic vertebrates, currently with emphasis on marine mammals.

The videos are available within the FU intranet, and (only with the password) also from outside the FUB:

1. Introduction by Frank Riedel
https://fu-berlin.eu.vbrickrev.com/sharevideo/c88acda5-d17e-41b0-924a-76b347118172 

2.Talk: (50 min.)
https://fu-berlin.eu.vbrickrev.com/sharevideo/90043d5d-0250-478c-bd01-ca9ff7c8c5e0 
How to login: see message sent to GeoColloquium mailing-list, or request access information from geokoll@zedat.fu-berlin.de

03 December 2020

Simona Pierdominici (PhD)
(GFZ Potsdam)

Present-day stress field analysis: case studies from scientific drilling projects

Invited by: Marco Bohnhoff

Knowledge of the in situ stress state of the Earth's crust plays a key role in understanding geological processes including plate tectonics, earthquakes, slope failure, and igneous emplacement. Here I present three case studies using breakout data from deep boreholes addressing the whole range of stress scales from global to local: local gravitational effects on Mauna Loa and Mauna Kea (Hawai´i), regional time-dependent deformation at Outokumpu (Finland) and global tectonics driven orientation of the present-day stress field in Italy.

Simona Pierdominici received her PhD in Geophysics from Bologna University and is since 2011 researcher at the GFZ. In 2015 Simona became member of the Operational Support Group of the ICDP. Her research focuses on the present-day stress field in the upper part of the Earth‘s crust and physical properties of rocks derived from borehole data and drill core.

The videos are available within the FU intranet, and (only with the password) also from outside the FUB:

1. Introduction by Marco Bohnhoff
https://fu-berlin.eu.vbrickrev.com/sharevideo/b56d31e9-319b-4038-ba27-b8a97325d323  

2. Talk: (40 min.)
https://fu-berlin.eu.vbrickrev.com/sharevideo/a5299af3-6c2a-4053-9af9-d506bd9365cd

How to login: see message sent to GeoColloquium mailing-list, or request access information from geokoll@zedat.fu-berlin.de

10 December 2020

Dr. Nicholas Gardiner
(University of St Andrews - UK)

Getting to the bottom of Archaean crust

Invited by: Elis Hoffmann

The Archaean Eon (4.0-2.5 Ga) was a transformative period in Earth history. The early Archaean marked the first appearance of Earth’s first stable crust, while the late Archaean witnessed the development, stabilization and emergence of cratons with implications for development of the atmosphere and life. However, debate still rages on the geodynamic settings of crust production, and whether different processes occurred at similar times globally. This talk will discuss recent geochemical and isotopic evidence for crust formation during the Archaean using examples from several cratons, how this empirical data can be tied in with phase equilibria modelling to constrain Archaean geodynamics, and some thoughts on how these blocks of crust assembled into cratons.

Nick Gardiner received his DPhil in isotope geochemistry and metamorphic petrology from the University of Oxford. After working in commodities trading in the City of London for a number of years, he returned to academic with postdocs in Oxford, Curtin (Perth) and Monash (Melbourne), before becoming a lecturer at the University of St Andrews. He is a geochemist and petrologist who is interested in the the magmatic processes which have shaped the evolution of Earth's lithosphere and the development of its mineral resources, with a particular focus on early Earth geodynamics.

1. Introduction by Elis Hoffmann
https://fu-berlin.eu.vbrickrev.com/sharevideo/ab405fa2-cc6b-48cd-afde-4ed6200bebad

2. Talk (55 min.)
https://fu-berlin.eu.vbrickrev.com/sharevideo/1dc9af5a-9b80-4653-b54c-17f1571fcf70

18 February 2021

Dr. Tobias Rolf
(University of Oslo)

Understanding plate tectonics at large: a modelling tale of mantle convection, lithospheric weakness and supercontinents

Invited by: Lena Noack

Plate tectonics makes the Earth unique across the known planets. Why it happens and how it evolves are important questions for understanding the Earth. But while we dive deeper into the planet and go back further in time, data becomes sparser and difficult to interpret. Fortunately, numerical tools can help and I will present a model of “synthetic plate tectonics” to demonstrate the interplay between surface tectonics and the interior and how this drives the formation of supercontinents like Pangea.

Tobias Rolf completed his doctorate at ETH Zurich in 2013. Since 2014 he is member of the Centre for Earth Evolution and Dynamics (University of Oslo). Since 2019, he is also guest scientist at the University of Münster. His research focuses on the interior evolution of the Earth and Planets, emphasizing on the coupling between mantle convection and surface tectonics.

1. Introduction

https://fu-berlin.eu.vbrickrev.com/sharevideo/7f491156-aeba-4682-a3ed-29bd5457942f 

2. Talk: (55 min.)

https://fu-berlin.eu.vbrickrev.com/sharevideo/b1118737-50ca-4231-87e7-8ca199d51cf9

Password-protected. How to login: see message sent to GeoColloquium mailing-list, or request access information from geokoll@zedat.fu-berlin.de

25 February 2021

Dr. Ana-Catalina Plesa 
(DLR Berlin)

InSights into the interior dynamics of Mars from geodynamic models and observations

Invited by: Lena Noack

Large-scale numerical simulations are often used to model the dynamics inside rocky planets and moons. Combined with constraints derived from mission data and laboratory experiments, these models help us to improve our understanding of the thermochemical history of a planetary body. In this presentation, I will focus on the thermal evolution and present-day state of the interior of Mars. Results from numerical thermal evolution models will be compared with available constraints and discussed in the context of NASA’s InSight mission.

Ana-Catalina (Ina) Plesa received her PhD from the University of Münster in 2014. She is researcher at the DLR Institute of Planetary Research, where since 2019, she leads a junior research group that investigates the thermochemical history of Mars and Venus. Her research focuses on the evolution and interior dynamics of terrestrial planets, combining numerical modeling and planetary mission data.

The videos are now available within the FU intranet, and (only with the password) also from outside the FUB:

1. Introduction

https://fu-berlin.eu.vbrickrev.com/sharevideo/455145c8-05ef-4eef-acdd-71f895e135c3 

2. Talk: (55 min.)

https://fu-berlin.eu.vbrickrev.com/sharevideo/e5844c06-333d-4d4e-b5fa-94edece0aebd 

Password-protected. How to login: see message sent to GeoColloquium mailing-list, or request access information from geokoll@zedat.fu-berlin.de

3. Live discussion:
At 17:00 (German time) we will start the discussion, which will be moderated by Lena Noack.

We changed the video-platform for the discussion, because the one we used so far has caused some problems:

We will use BigBlueButton, an OpenSource solution, hosted at the FU Geosciences dept. by the section Planetary Sciences and Remote Sensing:
https://bbb.planet.fu-berlin.de/b/geo-gzn-j9j-yc4  
If you don’t know BigBlueButton yet, you may want to watch some introductory videos here: https://bigbluebutton.org/html5 

Only in case of emergency: In the event that we encounter serious problems, we will use WebEx meeting as a fallback option: 
https://fu-berlin.webex.com/fu-berlin/j.php?MTID=m71a072e732576b241dd4e85d6dd94c39  
Meeting-no: 121 337 3244 Password: mpSVtsFp535

4.Discussion board: This is the link to the chatwall, which is already open (without password):
https://tweedback.de/pfx2/chatwall

The fate of PGE during mantle melting

Prof. Dr. Astrid Holzheid
(Christian-Albrechts-Universität zu Kiel)

Invited by: Ralf Milke

Uplift of Anatolia – when and how?

Prof. Dr. Aral Okay
(Istanbul Technical University - Turkey)

Invited by: Mark Handy

Geophysical monitoring of CO2 sequestration

Prof. Dr. Boris Gurevich
(Curtin University - Australia)

Invited by: Serge Shapiro

Cenozoic alkaline and carbonatitic magmatism in SW Germany

Dr. Michael Marks
(Eberhard Karls Universität Tübingen)

Invited by: Timm John

Dynamics of 2018 Kilauea eruption

Dr. Alberto Roman
(NASA Jet Propulsion Laboratory - California Institute of Technology - USA)

Invited by: Lorenzo Gemignani

Dr. Gabriel Tobie
(University of Nantes - France)

Invited by: Frank Postberg