GD1.2 | Structure, origin, and evolution of intraplate magmatism in space and time; insights from petrological, geochemical and geophysical studies
EDI
Structure, origin, and evolution of intraplate magmatism in space and time; insights from petrological, geochemical and geophysical studies
Co-organized by GMPV10
Convener: Martha PapadopoulouECSECS | Co-conveners: Jordan J. J. PhetheanECSECS, Magdalena Matusiak-Małek, Matthew J. Comeau, Lara Kalnins, Ingo Grevemeyer
Orals
| Thu, 18 Apr, 08:30–10:15 (CEST)
 
Room -2.91
Posters on site
| Attendance Fri, 19 Apr, 10:45–12:30 (CEST) | Display Fri, 19 Apr, 08:30–12:30
 
Hall X2
Orals |
Thu, 08:30
Posters on site
Fri, 10:45
The introduction of the plate tectonics theory in the 1960s has been able to satisfactory explain ~90% of the Earth’s volcanism, attributing it to either convergent or divergent plate boundaries. However, the origin of a significant amount of volcanism occurring on the interior of both continental and oceanic tectonic plates – widely known as intraplate volcanism – is considered to be unrelated to common plate boundary processes. A variety of models have been developed to explain the origins of this enigmatic type of magmatism. With time, technological breakthroughs have enabled improvement of instrumentation, resolution, and numerical modelling, as well as the development of new techniques that allow us to better understand mantle dynamics in the Earth’s interior. This technological improvement has helped re-evaluate and refine existing models and develop new models on the origins of intraplate magmatism. These models in turn, provide better insights on processes at depth, and also shed light on the complex interactions between the mantle and the surface. Understanding what triggers magmatism away from plate boundaries is critical to understand and reconstruct the evolution of Earth’s mantle through time, especially in eras where the tectonic plates weren’t yet developed or when the surface of the Earth was dominated by supercontinents. Investigating the relationship between the kinematics and mechanics of the tectonic plates on the one hand and the mantle dynamics on the other can give insights on the impact of the magmatism on the plates themselves. Moreover, deciphering the origins of intraplate magmatism on Earth can give us invaluable knowledge towards understanding magmatism on other planetary bodies in the solar system and beyond.
We welcome contributions dealing with the origins and evolution of intraplate magmatism, both in continental and oceanic settings, using a variety of approaches and techniques to tackle outstanding questions, such as but not limited to: petrological, geochemical, geochgronological and isotopic data, geophysical and geodynamical analysis, and seismological data. The aim of the session is to bring together scientists looking to understand intraplate magmatism using different approaches and to enhance discussion and collaboration between the various disciplines.

Orals: Thu, 18 Apr | Room -2.91

Chairpersons: Martha Papadopoulou, Matthew J. Comeau, Lara Kalnins
08:30–08:35
5-minute convener introduction
EGU24-14365
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ECS
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On-site presentation
Intraplate Volcanism by Spontaneous Shallow Upper Mantle Melt Focusing
Jung-Hun Song et al.
EGU24-18822
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ECS
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On-site presentation
Plate flexure and tectonic tilt along the Emperor Seamount Chain 
Chong Xu et al.

Posters on site: Fri, 19 Apr, 10:45–12:30 | Hall X2

Display time: Fri, 19 Apr 08:30–Fri, 19 Apr 12:30
Chairperson: Martha Papadopoulou
EGU24-1021
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ECS
|
OSPP
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On-site presentation
Geochemistry and geochronology of the High Arctic Large Igneous Province on Svalbard
Anna Marie Rose Sartell et al.
EGU24-11775
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On-site presentation
TRANSCAUCASUS: Record of 200 My plume activity
Nino Sadradze et al.
EGU24-15229
|
ECS
|
On-site presentation
3-D Modelling of Plume-Lithosphere Interaction: The Cosgrove Track, Eastern Australia
Thomas Duvernay and D. Rhodri Davies
EGU24-17719
|
ECS
|
OSPP
|
On-site presentation
Petrology and geochemistry of alkaline Circular Complexes from Sal Island, Cape Verde archipelago.
María García-Rodríguez et al.
EGU24-18227
|
ECS
|
OSPP
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On-site presentation
A geodynamic perspective on the formation of intraplate volcanism in Central East Asia
Alexander Rutson et al.
EGU24-12578
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On-site presentation
The influence of the lithosphere on deep-origin volcanism
Lara M Kalnins et al.