The Geological Society is pleased to be working with our Early Career Network for this September Public Lecture, which will be presented by the Early Career Geologist of 2025.
At the beginning of the Cryogenian Period, around 717 million years ago, ice caps advanced abruptly to cover the entire planet. Global ice cover is thought to have been attained relatively quickly, over thousands of years, because of the albedo effect – that is, the more ice there is, the more sunlight is reflected back into space, and vice versa. After reaching the equator, ice sheets persisted there for up to 58 million years. Understanding how our planet could have plunged into such extreme cold is still the subject of intense debate, but there is a problem. Sedimentary records of the moment when ice first reached low latitudes are absent everywhere on Earth, or so we once thought.
17:30–18:00: Guests arrive for the Public Lecture
18:00–19:00: Talk takes place (including Q&A)
19:00–20:00: Drinks reception
20:00: Event ends