The AstroGeo Seminar hosts web lectures on all aspects of the relation between the astronomical forcing of the insolation on Earth, resulting from the planetary gravitational perturbations, and their trace in the sedimentary record. The AstroGeo Seminar is open to any researcher or student in the field. In order to obtain the zoom link for the live AstroGeo Seminar, one can send an email to To recieve the announces of the online AstroGeo seminars, and be registered on the AstroGeo diffusion list, just send an email without subject to

All the videos of AstroGeo seminar are gathered in the Astrogeo Youtube channel here

February 19, 2023 at 3:00 PM (Paris Time)

Jun Korenaga,
Dpt of Earth and Planetary Sciences, Yale University, USA

Where was the Moon?
A fresh look at the tidal evolution of the early Earth-Moon system

Web Lecture on February 23,  2023 at 3:00 PM (Paris Time)

January 19, 2023 at 3:00 PM (Paris Time)

Mohammad Farhat,
IMCCE/Observatoire de Paris/PSL, Paris

The tidal evolution of the Earth-Moon system

November 10, 2022

Linda Hinnov,
George Mason University, Fairfax, Virginia, USA

Geological Evidence for Reconstructing Earth-Moon Parameters.

May 12, 2022

Holly Stein & Judith Hannah,
AIRIE Program, Colorado State University, USA Department of Geosciences, University of Oslo, Norway

Geologic Time Through Re-Os Dating of Organic-Rich Shales

April 4, 2022

Luc Beaufort,
CNRS-University Aix-Marseille (Laboratory CEREGE), France

Eccentricity forcing on Pleistocene carbonate production and biological evolution

March 17, 2022

Alessandro Forte,
Department of Geological Sciences, University of Florida, USA Institut de Physique du Globe de Paris, France Queens University & Centre GEOTOP, Canada

Earth`s internal dynamic
Impact on gravity field and elliptical figure

February 17, 2022

Sebastien Nomade,
CEA Saclay, Laboratoire des Sciences du Climat et de l’Environnement, UMR 8212, Université Versailles Saint-Quentin et Paris-Saclay, France

The 40Ar/39Ar dating historical perspective and recent advances

January 27, 2022

Maëlis Arnould,
Université de Lyon I, France

Plate tectonics on Earth:
observations, driving forces and temporal evolution

June 24, 2021

Urs Schaltegger,
University of Geneva, Switzerland

U-Pb dating of the sedimentary record
Integrated Early Jurassic Earth System and Timescale from

May 20, 2021

Dennis V. Kent,
Lamont-Doherty Earth Observatory, Columbia University, USA Earth and Planetary Sciences, Rutgers University, USA

Building an astrochronological polarity time scale.

April 18, 2021

Paul Olsen,
Lamont-Doherty Earth Observatory, Columbia Universityity, USA

Strategy of a Geological Orrery

March 18, 2021

Giorgio Spada,
Università di Bologna, Italia

Love numbers, the “sea-level equation” and the glacial isostatic adjustment problem

February 18, 2021 at 3:00 PM (Paris Time)

Richard W. Peltier,
University of Toronto, Canada

The 100 kyr Glacial Cycle of the Late Quaternary Ice Age

January 12, 2021 at 3:00 PM (Paris Time)

Stephen Hesselbo,
University of Exeter, UK

The JET Project
Integrated Early Jurassic Earth System and Timescale from legacy cores and a new stratigraphic borehole at Prees, UK

December 8, 2020

Felix Gradstein,
Universities of Oslo, Norway and Porthsmouth, UK

The Geologic Time Scale 2020