Previous Talks

Tianchen He

Image is of Tianchen He. He was on a field trip to the Yorkshire Coast, UK.

University of Leeds, UK

June 28, 2022

Marine redox dynamics across the end-Triassic mass extinction

The role of ocean deoxygenation as a cause of the endTriassic marine mass extinction is widely debated. Here I present multi-proxy geochemical data to reconstruct the full water-column redox landscape across the shallow to deep-water marine realms of the western Tethys and eastern Panthalassa during the Triassic–Jurassic transition. Results show local dissolved oxygen decline in the near-surface ocean of low-latitude Tethys across the extinction, synchronous with the spread of deeper anoxic waters on the wider continental shelves and slopes. Further, more persistently euxinic conditions prevailed across the Triassic–Jurassic boundary in many semi-enclosed basins of the NW European epicontinental sea, coinciding precisely with the major phase of benthic faunal loss at the regional scale. Hence, the coincidence of extreme redox shifts with the extinction losses on a global scale implicates oxygen scarcity as an important factor in the crisis.

Please click on Speaker’s name for more information!

June 2022 – August 2022


Tianchen He,
UK
June 28, 2022

Sofía Barragán Montilla,
Germany
June 23, 2022

David Evans
Germany
June 14, 2022

Jack Shaw,
USA
June 06, 2022

March 2022- May 2022


Amanda Garcia,
USA
May 31, 2022

Yassine Ait Brahim,
Morocco
May 24, 2022

Team JOIDES Resolution,
At Sea
May 17, 2022

Lara Maldanis,
France
May 10, 2022



Lily Jackson,
United States
May 3, 2022



Javier Luque,
United States
April 26, 2022

Arianny Storari,
Brazil
April 19, 2022

Erin Dillon,
United States
April 13, 2022

Keir Nichols,
United Kingdom
April 5, 2022

Skye Yunshu Tian,
Hong Kong,
March 22, 2022

Alexandra Auderset,
United States,
March 15, 2022


Sandy Hetherington,
United Kingdom,
March 8, 2022

Michela Johnson,
Germany,
March 1, 2022

December 2021- February 2022


Carina Fish,
United States,
February 22, 2022

Anja Frank,
Germany,
February 15, 2022

Mike MacFarrin,
United States,
February 8, 2022

Sarah Sheffield,
United States,
February 1, 2022

Abraham Dabengwa,
South Africa,
January 25, 2022

Tyler Kukla,
United States,
January 18, 2022

Navigating Grad School,
Panel Discussion
December 7, 2021

September 2021- November 2021


Andy Fraass,
Canada,
November 30, 2021

Jess Crumpton-Banks,
United Kingdom,
November 23, 2021

Kimberly Lau,
United States,
November 16, 2021


Hagar Hauzer,
Israel,
November 9, 2021

Emma Rehn,
Australia,
November 2, 2021

Sajjad Akam,
United States,
October 26, 2021

Bryan Shirley,
Germany,
October 19, 2021

Jihad Rachid,
Morocco,
October 12, 2021

Catherine Strickson,
United Kingdom,
October 5, 2021

Kate Marriott,
United States,
September 28, 2021

Andrew Christ,
United States,
September 21, 2021

Bill Lukens,
United States,
September 14, 2021

Ryan Mohammed,
West Indies,
September 7, 2021

June 2021- August 2021


Markus Adloff,
United Kingdom,
August 31, 2021

Makarius Itambu,
Tanzania,
August 24, 2021

Candela Blanco-Moreno,
Spain,
August 17, 2021



Tripti Bhattacharya,
United States,
August 10, 2021

Deborah Khider,
United States,
August 03, 2021

Farid Saleh,
China,
July 27, 2021

Catherine Davis,
United States,
July 20, 2021



Mónica Carvalho,
United States,
July 13, 2021


Evan Ramos,
United States,
July 6, 2021

Joe Moysuik,
Canada,
June 29, 2021

Audrey Taylor,
United States,
June 22, 2021

Ornella Bertrand,
United Kingdom,
June 15, 2021

Chris Lowery,
United States,
June 8, 2021


Tali Babila,
United Kingdom,
June 1, 2021

March 2021 – May 2021


Advait Jukar,
United States,
May 25, 2021

Nuria Melisa Morales Garcia,
United Kingdom,
May 18, 2021

Matthias Sinnesael,
United Kingdom,
May 11, 2021

Shamindri Tennakoon,
United States,
May 4, 2021

Canfa Wang,
China,
April 27, 2021

Agathe Toumoulin,
France,
April 13, 2021

Sibusiso Biyela,
South Africa,
April 6, 2021

Aline Ghilardi,
Brazil,
March 30, 2021

Flavia Boscolo-Galazzo,
Switzerland,
March 23, 2021

Heda Agić,
United States,
March 16, 2021

Ben Otoo,
United States,
March 9, 2021

Samantha Carter,
United States,
March 2, 2021

December 2020 – February 2021


Judi Sclafani,
United States
February 23, 2021

Weimu Xu
Ireland,
February 16, 2021

Hazel Richards
Australia,
February 9, 2021

Anne-Claire Fabre,
Switzerland,
February 2, 2021

Alyssa Atwood,
United States,
January 26, 2021

Karma Nanglu,
United States,
January 19, 2021

Nussaibah Raja,
Germany,
December 8, 2020

Natalie Umling,
United States,
December 1, 2020

September 2020 – November 2020


Emma Karoune,
United Kingdom
November 24, 2020


Kaustubh Thirumalai,
United States,
November 17, 2020


Thomas Clements,
United Kingdom,
November 10, 2020

Esther Githumbi,
Sweden,
November 3, 2020

Jamie McFarlin,
United States,
October 27, 2020

Sarah Shelley,
United States,
October 20, 2020


Aviwe Matiwane,
South Africa,
October 13, 2020

Allison Karp,
United States,
October 6, 2020


Jorge Cardich,
Peru,
September 29, 2020

Gabi Serrato Marks,
United States,
September 22, 2020

Aaron Martinez,
United States,
September 15, 2020

Emanuela di Martino,
Norway,
September 8, 2020

Matthew Jones,
United States,
September 1, 2020

June 2020 – August 2020


Charuta Kulkarni,
United Kingdom,
August 25, 2020



Caitlyn Witkowski,
United Kingdom,
August 18, 2020

Deepak Jha,
India,
August 11, 2020

Mairin Balisi,
United States,
August 4, 2020

Emma Dunne,
United Kingdom,
July 28, 2020

Pedro Monarrez,
United States,
July 21, 2020

Neil Brocklehurst,
United Kingdom,
July 7, 2020

Heather Jones,
United States,
June 30, 2020

Laura Haynes,
United States,
June 23, 2020

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