Date: Wednesday, January 11, 2023 — Friday, January 13, 2023
Web: https://allevents.eventsair.com/geocongress/
Contact: geocongress@allevents.co.za
Includes the following sessions:
Date: Monday, January 30, 2023 — Friday, February 3, 2023
Web: https://confer.eventsair.com/iavcei2023/
Date: Sunday, April 23, 2023 — Friday, April 28, 2023
Includes the following sessions:
SSP1.3 Mass extinctions and environmental changes throughout the geological time: causes and consequences
Convenors: Alicia Fantasia (alicia.fantasia@univ-lyon1.fr), Thierry Adatte (thierry.adatte@unil.ch), Sverre Planke (sverre.planke@geo.uio.no), David Bond (d.bond@hull.ac.uk), Eric Font (font_eric@hotmail.com)
Mass extinctions and severe environmental changes in the Phanerozoic are temporarily associated with large volcanic eruptions and meteorite impacts, suggesting causal relationships. This session invites contributions presenting new data and results from the end-Ordovician, Late and end-Devonian, end-Permian, end-Triassic, end-Cretaceous, and other paleoenvironmental crises, such as the Paleocene-Eocene Thermal Maximum and Oceanic Anoxic Events in the Mesozoic. The goal of the session is to bring together researchers from geological, geophysical, and biological disciplines to improve our knowledge of the cause-effect scenario of these major environmental changes.
GD2.2 Geochemical and geodynamic perspectives on the origin and evolution of deep-seated mantle melts and their interaction with the lithosphere
Convenors: Igor Ashchepkov (igor.ashchepkov@igm.nsc.ru), Sonja Aulbach (s.aulbach@em.uni-frankfurt.de), Kate Kiseeva (kate.kiseeva@earth.ox.ac.uk), NV Chalapathi Rao (nvcraobhu@gmail.com), Evgenii Sharkov (sharkov@igem.ru)
The origin and evolution of the continental lithosphere is closely linked to changes in mantle dynamics through time, from its formation through melt depletion to multistage reworking and reorganisation related to interaction with melts formed both beneath and within it. Understanding this history is critical to constraining terrestrial dynamics, element cycles and metallogeny. We welcome contributions dealing with: (1) Reconstructions of the structure and composition of the lithospheric mantle, and the influence of plumes and subduction zones on root construction; (2) Interactions of plume- and subduction-derived melts and fluids with the continental lithosphere, and the nature and development of metasomatic agents; (3) Source rocks, formation conditions (P-T-fO2) and evolution of mantle melts originating below or in the mantle lithosphere; (4) Deep source regions, melting processes and phase transformation in mantle plumes and their fluids; (5) Modes of melt migration and ascent, as constrained from numerical modelling and microstructures of natural mantle samples; (6) Role of mantle melts and fluids in the generation of hybrid and acid magmas.These topics can be illuminated using the geochemistry and fabric of mantle xenoliths and orogenic peridotites, mantle-derived melts and experimental simulations.
Date: Monday, April 24, 2023 — Tuesday, April 25, 2023
Web: https://www.lakesuperiorgeology.org/EauClaire2023/index.html
Date: Tuesday, May 23, 2023 — Thursday, May 25, 2023
Web: https://www.geosociety.org/GSA/Events/Section_Meetings/GSA/Sections/rm/2023mtg/home.aspx
Includes the following sessions:
T5. Drivers of continental magmatism
Convenors: Pamela Kempton (pkempton@ksu.edu), Claudia Adam (cadam@ksu.edu), Matthew Brueseke (brueseke@ksu.edu)
Continental magmatism is compositionally diverse, ranging from kimberlites to rhyolites. The drivers for this magmatism are varied, including passive upwelling and rifting, mantle plumes, edge-driven convection, and lithosphere destabilization. We seek contributions from all disciplines focused on constraining the origin of continental magmatism, particularly students and early career researchers.
T8. The Yellowstone hotspot geologic province: examining the effects of Yellowstone volcanism on the North American West
Convenors: Cole Messa (cmessa@uwyo.edu), Mark Stelten (mstelten@usgs.gov), Kenneth Sims (ksims7@uwyo.edu)
Mafic and silicic volcanism related to the Yellowstone–Snake River Plain hotspot have had profound effects on much of western North America as it migrated from Nevada/Oregon to its present location at the Yellowstone Plateau Volcanic field. This session seeks contributions that examine the origin of volcanism related to hotspot magmatism and/or the effects of volcanism on the surrounding landscape.
Date: Wednesday, May 24, 2023 — Saturday, May 27, 2023
Web: https://event.fourwaves.com/Sudbury2023/pages
Includes the following symposia:
SY03 – Magmatic ore deposits associated with mafic-ultramafic systems: a symposium honouring Dr. Sarah-Jane Barnes
Convenors: Michel Houle (michel.houle@canada.ca), Sarah Dare (sarah1_dare@uqac.ca)
Date: Monday, June 5, 2023 — Friday, June 9, 2023
Web: https://marrakech.sciencesconf.org/
Contacts: Nasrrddine Youbi (youbi@uca.ac.ma), Richard Ernst (richard.ernst@carleton.ca)
Date: Sunday, July 9, 2023 — Friday, July 14, 2023
Web: https://conf.goldschmidt.info/goldschmidt/2023/goldschmidt/2023/meetingapp.cgi
Includes the following sessions:
5f – Large Igneous Provinces (LIPs): their plumbing systems, and links with plumes, supercontinent breakup, ore deposits, and environmental change through Earth history
Convenors: Hafida El Bilali, Isabel Fendley (isabel.fendley@earth.ox.ac.uk), Sara Callegaro (sara.callegaro@geo.uio.no), Hamed Sanei (sanei@geo.au.dk), Joshua Davies (davies.joshua@uqam.ca), Richard Ernst (richard.ernst@carleton.ca)
The record of Large Igneous Provinces (LIPs) is continually expanding back in time and now includes events older than 3 Ga. Associated with this expanding LIP record, there is now an increased understanding of LIP plumbing systems and origin (typically associated with mantle plumes). LIPs are now recognized to have played a key role in major geodynamic processes, including formation and evolution of the lithosphere, and supercontinent breakup. These important phenomena also frequently coincide with complex environmental changes, including mass extinctions, oceanic anoxic events, hyperthermal events, global glaciations, regional topographic changes, ore deposit formation, and significant silicic magmatism (SLIPs), carbonatites and kimberlites. We welcome contributions from a diverse range of disciplines to encourage cross-fertilization of ideas and a multi-faceted discussion of LIP systems, including igneous and sedimentary geochemistry, experimental petrology, geochronology, and studies utilising chemical and biological proxies in the stratigraphic record. Novel and provocative contributions are particularly encouraged, as well as those from groups underrepresented in the geoscience community.
8f - A holistic approach to critical events during the Phanerozoic: from OAEs to mass extinctions
Convenors: Yogaraj Banerjee (ybanerjee15@gmail.com), Xinyuan Zheng (zhengxy@umn.edu), Audrey Morrison, Hana Jurikova (hj43@st-andrews.ac.uk), Lawrence Percival (lawrence.percival@vub.be), Nigel Blamey (nblamey2@uwo.ca)
Over the Phanerozoic Eon, the Earth witnessed several episodes of abrupt change in the surface environment and the biosphere. These included the ‘Big Five’ mass extinctions, ocean anoxic events (OAEs), rapid climate warming/cooling spells, and multiple other ‘more minor’ biotic crises. The perturbations in biogeochemical cycles during those times often led to the rapid and widespread disappearance of marine and terrestrial biota, as well as setting the stage for new ones to emerge. Although progress has been made in unravelling some of the factors and conditions driving abrupt environmental, climatic and biogeochemical changes during these events, there are still considerable shortcomings towards a holistic understanding of the underlying causes of these critical events, and the complex interactions between the physical, chemical and biological components of the biosphere during these time periods. Deconvolving the complex interactions between different components of the Earth system, including the solid Earth, hydrosphere, atmosphere, and biosphere during those episodes offers a better understanding of how the Earth operates as an integrated system, and also provides useful insights into possible Earth-System changes in the future. This session invites contributions that help to elucidate the driving forces behind these critical events (such as OAEs, PETM, K/Pg, end Permian, etc.) and the environment-biota interactions during intervals of rapid environmental change in the Phanerozoic. We welcome studies that use proxy, modelling and integrated approaches. The overarching aim is to foster discussion and synthesis of recent advances in the field.
Date: Sunday, August 13, 2023 — Friday, August 18, 2023
Web: https://www.grc.org/geochronology-conference/2023/
Includes the following topics:
Large igneous provinces
Discussion leader: Joshua Davies (davies.joshua@uqam.ca)
Date: Monday, December 11, 2023 — Friday, December 15, 2023
Web: https://www.agu.org/fall-meeting
Includes the following sessions:
Cretaceous-Paleogene Large Igneous Province emplacement and ocean history: impacts on crustal structure, climate, and circulation
Convenors: Gabriele Uenzelmann-Neben (Gabriele.Uenzelmann-Neben@awi.de), Steven Bohaty (Steve.Bohaty@geow.uni-heidelberg.de), William Sager (wwsager@uh.edu), Kaj Hoernle (khoernle@geomar.de), Peter Davidson (peter.davidson@oregonstate.edu)
The Late Cretaceous‒Paleogene (~100‒34 Ma) was characterized by the opening/deepening of several ocean gateways (African‒Southern Ocean, South Atlantic, Equatorial Atlantic, northern North Atlantic), which modified oceanic circulation and influenced long-term climate evolution. In addition to seafloor spreading, the opening of these gateways was accompanied by extensive volcanic activity and emplacement of Large Igneous Provinces (LIPs), including the Agulhas Plateau, Walvis Ridge/Rio Grande Rise, and the North Atlantic Volcanic Province. Recent expeditions of the International Ocean Discovery Program (IODP; numbered 391/397T, 392, 395, and 396) recovered new igneous and sedimentary cores from these LIPs. Samples from these expeditions will lend new insight to the chronology and nature of LIPs, including emplacement/volcanism, magmatic sources and mantle plume/hotspot processes, structural development of key ocean gateways, and subsequent modulation of ocean circulation and climatic repercussions.
We welcome contributions from IODP expeditions investigating both igneous and sedimentary histories of Cretaceous‒Paleogene LIPs in any ocean basin.
Volcanic rifted margin formation and environmental consequences
Convenors: Christian Berndt (cberndt@geomar.de), Sverre Planke (sverre.planke@geo.uio.no), Ritske Huismans (Ritske.Huismans@uib.no), Carlos Alvarez Zarikian (zarikian@iodp.tamu.edu)
Continental breakup is commonly associated with the formation of Large Igneous Provinces and major environmental and climatic disturbances. The recent IODP Expedition 396 on the mid-Norwegian continental margin in 2021 provided a major push for the research field, recovering both sedimentary and basaltic deposits associated with the North Atlantic Igneous Province. Initial results suggest a firm link between the magmatism and the Paleocene-Eocene Thermal Maximum.
In this session, we invite geoscientists and modelers to present their most recent results on the tectono-magmatic processes that control excess magma production and how such igneous events may trigger hydrothermal venting and rapid climate change. We encourage submission of case studies, integrated interpretations, and models of volcanic rifted margins globally.
Also, contributions on the consequences such as the knock-on effects of break-up volcanism on oceanic gateway opening or the suitability of the breakup-related basalt formation for carbon capture and storage are very much welcome.
Chemistry and evolution of Earth’s interior as recorded by mantle plumes
Convenors: Nicole Williamson (nwilliam@mail.ubc.ca), Val Finlayson (vfinlays@umd.edu), Lauren Harrison (lauren.n.harrison@colostate.edu)
The Earth’s mantle is an important chemical reservoir with a complex history. Exchanges between the mantle and other Earth reservoirs, such as the atmosphere, crust, core, and hydrosphere, have fundamentally influenced the evolution of the entire Earth system. “Primary” mantle plumes originate from the mid to lower mantle and produce intraplate lavas that carry geochemical tracers of their deep mantle sources. The geochemistry of plume-formed rocks can help constrain Earth’s initial composition, the formation and preservation of ancient chemical reservoirs and continental crust, the onset of subduction and recycling, and the dynamic mixing of heterogeneities through time. This session will focus on the geochemistry of Earth’s mantle as recorded by mantle plume melts, with an emphasis on ocean island basalts and large igneous provinces. We welcome submissions using geochemical, geochronological, geodynamic, and isotopic tools to explore the origin, scale, extent, and preservation of mantle chemical heterogeneity over Earth’s entire history.