Dear colleagues, We would like to draw your attention to a session which we are organising at this year's Goldschmidt conference on "Formation and evolution of continental crust in the Precambrian: Linking Earth’s surface and deep interior” https://2021.goldschmidt.info/goldschmidt/2021/meetingapp.cgi/Session/2103 <https://2021.goldschmidt.info/goldschmidt/2021/meetingapp.cgi/Session/2103> The keynote speaker will be Annie Bauer (University of Wisconsin-Madison): “Isotopic evidence for a gradual onset of mobile-lid tectonics“ The invited speakers will be Katie Smart (University of the Witwatersrand) and Rongfeng Ge (Nanjing University). Abstract deadline is 26 February. Session details: Continental crust not only provides the habitat for human beings, but also is a defining component of Earth that distinguishes it from the other planets in the solar system. Although significant progress has been made in recent years on understanding crust formation, composition, and evolution, many fundamental questions remain unresolved. Today, continental crust is mainly formed in convergent margins, and maintains a nearly constant composition and volume. However, it is ambiguous whether and how this may have differed in the early Earth, concerning the geodynamic settings of continent production, preservation and destruction rates. Consequently, there are implications for the nature of the interaction between continental crust and surface environments, and the link between Earth’s internal and external chemical evolution. In this session, we encourage contributions that examine the formation and evolution of continental crust in the Precambrian connecting the mantle, crust, ocean and atmosphere reservoirs as well as the evolution of the biosphere. This session welcomes contributions from a large range of disciplines including geochemistry, igneous and metamorphic petrology, geodynamics, but also studies of early atmosphere, biosphere and early life. In particular, we invite interdisciplinary approaches, such as the combination of geochemical, petrological and geophysical studies, field observations, and others. We especially encourage abstracts from early-career scientists and researchers from backgrounds typically underrepresented in Earth Sciences." The Goldschmidt conference https://2021.goldschmidt.info/goldschmidt/2021/meetingapp.cgi/ <https://2021.goldschmidt.info/goldschmidt/2021/meetingapp.cgi/> will be held in Lyon, France, in a hybrid format on 4-9 July. We hope to see many of you in Lyon! With best wishes, Mathias (on behalf of co-convenors Ming Tang, Hugo Moreira, Shao-Bing Zhang and Gautier Nicoli) -- Dr Mathias Schannor Humboldt - Feodor Lynen Research Fellow Department of Earth Sciences The University of Cambridge Downing Street Cambridge CB2 3EQ mss77@cam.ac.uk